From eoas-seminar at lists.fsu.edu Mon Nov 2 08:40:13 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 2 Nov 2020 13:40:13 +0000 Subject: [Eoas-seminar] Meteorology MS Defense for Gwen Dmitruk, Monday, November 9, 2020, 11:30 AM, on Zoom https://fsu.zoom.us/j/99786563905?pwd=RWlYeWZLRGE4V1Vja0duK3l0UWZkQT09 Message-ID: Meteorology Seminar Gwendolyn Dmitruk M.S. Meteorology Candidate Title: A globe-circling synoptic-Scale winter disturbance In Northern hemisphere midlatitudes Major Professor: Dr. Jon Ahlquist Date: Monday, November 9, 2020 Time: 11:30 AM Location: Zoom Meeting (URL: https://fsu.zoom.us/j/99786563905?pwd=RWlYeWZLRGE4V1Vja0duK3l0UWZkQT09) ABSTRACT Preliminary studies by former FSU students Lydia Stefanova and Alec Bogdanoff documented a synoptic-scale disturbance that can travel eastward long distances around the globe with a period of about 20 days (roughly 9-10 days to go halfway around). These earlier studies looked at only at one pressure level, 500 hPa. The present study extends this work by adding multiple levels with a better, longer data set (1958-2018 from JRA-55 reanalysis on 1.25-degree lat-lon grid) and removing the annual cycle. The two centers of action are off the northeastern coasts of Asia and North America, where relative vorticity and height fluctuations are large. The starting point was identifying the 100 most prominent during 61 years of 150-day cold seasons beginning on 1 November of 1958-2018. Global composites spanning 25 days before to 25 days after the 100 most extreme relative vorticity maxima at 500 hPa were computed for multiple pressure levels. This allowed for observation of the disturbance from 1000 hPa to 1 hPa. At the time of the vorticity maxima, the composite shows an untilted feature about 560 km in diameter extending from 1000 hPa to 100 hPa, decaying rapidly above that level. Composites confirmed the existance of the wave pattern, which travels eastward across the Atlantic with maintained strength after reaching a peak off the cost of Nova Scotia (t = 0). It rapidly loses this strength and gains a notable southward component to its trajectory after reaching the European coastline, but still visibly treks eastward across Asia in its weakened state. Upon reaching the Pacific (at t = 9), it surges in relative vorticity strength again. This strength is likewise maintained across the North Pacific, until it similarly and significantly weakens in strength and attains a southeastern trajectory upon contact with the North America, only to reemerge in a week's time to repeat the pattern once again (t = 19) increasing and maintaining strength along the North Atlantic. Similar results are repeated using height fall composites, with wave signal location, speed, and strength mirroring that of the relative vorticity composites. Case studies of individual events allow for the indexing and chronicling of the events life cycle. Shel McGuire Florida State University Academic Program Specialist Department of Earth, Ocean, & Atmospheric Science 1011 Academic Way, 2019 EOA Building Tallahassee, FL 32306 850-644-8582 To make an appointment please login to my.fsu.edu and choose the Campus Connect (CC) icon -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Mon Nov 2 08:41:07 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 2 Nov 2020 13:41:07 +0000 Subject: [Eoas-seminar] Meteorology MS Defense for Chesnea Skeen, Monday, November 2, 2020, 9:00 AM, on Zoom 8187403932 Message-ID: Meteorology Seminar Chesnea Skeen M.S. Meteorology Candidate Title: AREA- AND POINT-BASED VERIFICATION OF NEW MULTI-HAZARD SEVERE WEATHER INDEX Major Professor: Dr. Henry Fuelberg Date: November 2nd, 2020 Time: 9:00 AM Location: Zoom meeting URL: https://fsu.zoom.us/j/8187403932 ABSTRACT Severe weather indices are empirical tools developed by meteorologists to assist in predicting severe weather. The Storm Prediction Center's (SPC) Mesoanalysis website lists 23 composite indices. They all are similar in that they calculate differences or combine parameters multiplicatively to determine the severe environment. Most of these indices prioritize a specific weather hazard type or storm convective mode. There is no severe weather index that covers multiple hazards at all severity levels. Lead forecaster Don Van Dyke at the National Weather Service (NWS) Weather Forecast Office (WFO) in Tallahassee aimed to remedy the lack of a holistic index and developed a severe weather index that would encompass three hazards (wind, hail and tornadoes) of any severity. Van Dyke's index (DVDI) also is unique in that it adds its component parameters in the calculations, rather than multiplying them. However, no statistically robust analysis has been conducted on DVDI to show how it performs as a forecasting tool. This research evaluates the skill of DVDI as a forecasting tool, identifies strengths and weaknesses, and suggests improvements. This research conducts a verification of DVDI using combined dichotomous and spatial methods using a point-based and area-based approach. Results show DVDI is able to predict multi-hazard severe weather with an overall POD of 0.78, which suggests DVDI to be a useful forecast tool. DVDI has proven success in predicting all three of the included hazards with a POD of 0.73-0.76. DVDI can differentiate between days with severe weather and days without severe weather with 99% confidence. Additionally, DVDI can distinguish between weak and violent tornadoes with 99% confidence. Weaknesses of DVDI include a high FAR, virtually no skill differentiating hail magnitude, and poor performance with mountainous terrain and winter season wind events. Shel McGuire Florida State University Academic Program Specialist Department of Earth, Ocean, & Atmospheric Science 1011 Academic Way, 2019 EOA Building Tallahassee, FL 32306 850-644-8582 To make an appointment please login to my.fsu.edu and choose the Campus Connect (CC) icon -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Mon Nov 2 09:26:12 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 2 Nov 2020 14:26:12 +0000 Subject: [Eoas-seminar] Fwd: [4th-Floor] Virtual Tea and Colloquium with Cathrine Hancock 11/04 References: Message-ID: Begin forwarded message: From: William Burgess via SC-4th-Floor > Subject: [4th-Floor] Virtual Tea and Colloquium with Cathrine Hancock 11/04 Date: November 2, 2020 at 7:36:47 AM EST To: JESfwd-fsu-sc-seminar-announce >, JESfwd-fsu-sc-4th-floor > Reply-To: William Burgess > The Department of Scientific Computing at Florida State University presents Cathrine Hancock Geophysical Fluid Dynamics Institute Florida State University ?Slope Currents in the Northeastern Gulf of Mexico? Wednesday, November 4, 2020 Virtual Tea Time 3:00 to 3:30 P.M. Eastern Time (U.S. and Canada) Virtual Colloquium 3:30 to 4:30 P.M. Eastern Time (U.S. and Canada) Zoom Login https://fsu.zoom.us/j/94273595552 See https://www.sc.fsu.edu/news-and-events/colloquium for details Abstract: Subsurface float data, mooring data and output from a five-year numerical ocean model simulation were used to investigate the subsurface flow patterns in the northeastern Gulf of Mexico (GoM). The combination of bathymetry, associated along-slope flows, and eddy activity sets the basic structure of the flow near 400m depth in the northeastern GoM. Years with persistent eastward or westward along-slope flow through De Soto Canyon (DSC) seed exit pathways into the Atlantic or western GoM, generating increased Lagrangian dispersion from the eastern GoM. Though Loop Current instability is responsible for much of the eddy activity in the northeastern GoM, certain eastward flow patterns along the Louisiana-Mississippi slope can produce cyclonic stationary eddies in DSC. This is due to the shape of the bathymetry within the canyon, created by the junction of the Mississippi-Alabama shelf with the West Florida Shelf. During periods of increased eddy activity in the northeastern GoM, simulated particles spread more uniformly throughout the region, with reduced exchange outside the eastern GoM. There is an increase in particle recirculation in DSC whenever eddy activity is high. The canyon is a natural pathway for particle transport across the slope, and recirculation in the canyon is also able to drive enhanced exchange of water masses between the deeper ocean and shelf waters locally. Large interannual variability is observed in eddy activity from the five-year model run, and this greatly affects Lagrangian particle transport, serving as a proxy for fluxes between the deeper ocean and shelf waters. -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Mon Nov 2 10:07:59 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 2 Nov 2020 10:07:59 -0500 Subject: [Eoas-seminar] No EOAS colloquium this week Message-ID: There will be no EOAS colloquium this week as there is a faculty meeting.? Our next colloquium will be Dr. Sharon Nicholson on Friday November 13. From eoas-seminar at lists.fsu.edu Tue Nov 3 11:31:07 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 3 Nov 2020 16:31:07 +0000 Subject: [Eoas-seminar] Geology Dissertation Defense - Nur Ahmed - Nov 16, 11:00am - Zoom Message-ID: Geology Dissertation Defense - Nur Ahmed - Nov 16, 11:00am Title: ISOTOPE ANALYSIS AND GROUNDWATER MODELING FOR ADVANCED UNDERSTANDING OF LAKE WATER AND GROUNDWATER MIXING THROUGH LAKE SINKHOLES IN NORTH FLORIDA Major Professors: Ming Ye and Yang Wang Join Zoom Meeting https://fsu.zoom.us/j/96687292277 Meeting ID: 966 8729 2277 One tap mobile +13126266799,,96687292277# US (Chicago) +16465588656,,96687292277# US (New York) Dial by your location +1 312 626 6799 US (Chicago) +1 646 558 8656 US (New York) +1 301 715 8592 US (Germantown) +1 346 248 7799 US (Houston) +1 669 900 9128 US (San Jose) +1 253 215 8782 US (Tacoma) Meeting ID: 966 8729 2277 Find your local number: https://fsu.zoom.us/u/aqCLSj3Uu Join by SIP 96687292277 at zoomcrc.com Join by H.323 162.255.37.11 (US West) 162.255.36.11 (US East) 115.114.131.7 (India Mumbai) 115.114.115.7 (India Hyderabad) 213.19.144.110 (Amsterdam Netherlands) 213.244.140.110 (Germany) 103.122.166.55 (Australia) 149.137.40.110 (Singapore) 64.211.144.160 (Brazil) 69.174.57.160 (Canada) 207.226.132.110 (Japan) Meeting ID: 966 8729 2277 -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Tue Nov 3 12:59:31 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 3 Nov 2020 17:59:31 +0000 Subject: [Eoas-seminar] Reminder: Geology dissertation defense - Chelsie Bowman - Nov 4, 10am - Zoom Message-ID: Geology dissertation defense - Chelsie Bowman - Nov 4, 10am Title: The coupled evolution of the biosphere and global marine redox conditions in the late Silurian Major Professor: Seth Young Join Zoom Meeting https://fsu.zoom.us/j/92286328718 Meeting ID: 922 8632 8718 Abstract The Silurian was a dynamic time of climatic transition punctuated by multiple biotic crises and global carbon cycle perturbations. The most severe of these biotic crises was the late Silurian (Ludfordian) Lau/Kozlowskii extinction event (LKE; 425 Ma), with a loss of ~23% of marine genera and a resurgence of abiotic and microbially-mediated carbonate facies. The LKE has been recognized as asynchronous for more than a decade, with benthic and nektonic fauna experiencing earlier extinctions than planktic fauna. The LKE preceded and partially coincided with an associated positive carbon isotope excursion, the Lau CIE, which is the highest-magnitude CIE in the Phanerozoic with average peak excursion values between +5 and +8?. It has been suggested, but not directly tested, that both the Lau CIE and the LKE were the result of an expansion of reducing conditions in the Ludfordian global oceans. The mechanisms behind the temporal offset between the extinction and the CIE and the asynchronous nature of the extinction have also not been previously constrained. New records of the extinction and local and global marine paleo-redox change are presented herein from Ludfordian carbonate- and siliciclastic-dominated successions of multiple paleocontinents. For the first time biotic records of well-studied taxonomic groups affected by the LKE are compiled, highlighting the stepwise nature of the extinction. Global paleo-redox dynamics are first examined using a novel approach combining analyses of the stable isotopes of carbon, sulfur, and thallium. A positive excursion in thallium isotopes in the deep-water shales of the Baltic Basin (modern Scandinavia) records the earliest onset of global marine deoxygenation in the Ludfordian, which was coincident with the earliest extinction stages of the LKE and prior to the enhancement of organic carbon burial that fueled the Lau CIE. A large positive excursion in sulfur isotopes in the shallow water carbonates of the Baltic Basin was recorded parallel to the CIE as pyrite burial increased globally. This suggests an expansion of euxinia (anoxic and sulfidic water column) in the global oceans following the initial deoxygenation and concurrent with the later extinction stages of the LKE. Support for the expansion of reducing conditions in the late Silurian global oceans comes from the study of carbonate successions along the southern and western margins of the paleocontinent Laurentia (modern North America) where paired positive excursions in carbon and sulfur isotopes lend further evidence for the global enhancement of organic carbon and pyrite burial. Variability in local and regional paleo-redox dynamics in the Ludfordian have been explored along the southern Laurentian margin and in the Baltic and Prague basins. Low I/Ca ratios from the carbonates of southern Laurentia and the shallow shelf of the Baltic Basin indicate proximity to local/regional oxygen minimum zones (OMZ) concurrent with the global expansion of reducing conditions. High pyrite content in the carbonate strata of southern Laurentia and the Prague Basin (peri-Gondwanan terrane; modern Czech Republic) suggest that sulfidic sediment porewaters were common. Comparison of iron geochemistry and trace metal enrichments in the deep shelf of the Baltic Basin to that of modern OMZs imply that the basin may have been dominated by a nitrogenous OMZ throughout most of the Ludfordian. There is also a possible overprint of a global trace metal drawdown in the stratigraphic trends of trace metal enrichments from this locality that would have been coeval with the enhancement of pyrite burial and the expansion of euxinic conditions in the global oceans. Dynamics of the LKE event have been further explored through microfacies analyses and accounts of previously unreported microbially-mediated facies in Ludfordian carbonate successions. The LKE event is recorded in southern Laurentia as notable biotic reorganizations during the interval of the mid-Ludfordian when reducing conditions would have been the most prevalent in the global ocean. Flat-pebble conglomerate facies and possible microbial mats are reported from the carbonate strata of western Laurentia and the Prague Basin, ooids and micro-oncoids from southern Laurentia. The variety and pervasiveness of microbially-mediated carbonate facies associated with the LKE hint at the severity of the extinction and the restructuring of faunal communities that took place within carbonate platforms during the Ludfordian. Altogether, the geochemical, biotic, and lithologic data presented here represent the first proxy evidence linking the LKE event to the Lau CIE through the progressive expansion of anoxia, and later euxinia, across portions of the late Silurian oceans. This multi-proxy, multi-lithology approach provides a previously unmatched, holistic view of the dramatic changes in the late Silurian marine biosphere and global marine redox conditions. -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Wed Nov 4 10:56:09 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Wed, 4 Nov 2020 15:56:09 +0000 Subject: [Eoas-seminar] Meteorology MS Defense for Catherine Buczek, Thursday, November 5th, 2020, 3:30 PM, on Zoom https://fsu.zoom.us/j/95618726792 Message-ID: Meteorology Seminar Catherine R. Buczek M.S. Meteorology Candidate Title: USING MULTI-DIMENSIONAL ENSEMBLE EMPIRICAL MODEL DECOMPOSITION (MEEMD) TO DIAGNOSE CHANGES IN THE NORTHERN HEMISPHERE ANNUAL CYCLE Major Professor: Dr. Zhaohua Wu Date: November 5th, 2020 Time: 3:30 PM Location: Zoom link https://fsu.zoom.us/j/95618726792 ABSTRACT The annual cycle is a relatively large-scale climate process which influences smaller scale climate and meteorological processes. The goal of this research is to diagnose changes to the Northern Hemisphere annual cycle from 1949 to 2017 using multi-dimensional ensemble empirical mode decomposition (MEEMD). MEEMD is a newer decomposition method that is built on empirical mode decomposition (EMD) and ensemble empirical mode decomposition (EEMD; Wu et al. 2009). Compared to EMD and EEMD, MEEMD can be used to decompose spatiotemporal data sets making climate research easier, which often relies heavily on gridded data sets (Wu et al. 2016). In this study, MEEMD is applied to 2-meter pentad temperature data from the National Centers for Environmental Prediction (NCEP)/National Centers for Atmospheric Research (NCAR) Reanalysis 1 (Kalnay et al., 1996) to obtain the amplitude trend of the annual cycle. The amplitude trend of the annual cycle for all points are normalized to compare the trends between polar and tropical latitudes, as the polar latitudes are changing at a more rapid rate than the tropical latitudes, likely due to anthropogenic forcing (IPCC 2019). Results show that the annual cycle is decreasing in polar latitudes and increasing in tropical latitudes. In mid-latitudes, the annual cycle appears to change depending on topography where, in general, the annual cycle is decreasing in highland regions and increasing in lowland regions. Changes in climate modes may also play a role in mid-latitude results but this remains to be studied in depth. Identifying changes to the annual cycle will prove useful for understanding the spatially differing effects of climate change on weather and climate in the Northern Hemisphere. The results of this research serve as a diagnosis and open the opportunity for future research to explain the results of this paper. Shel McGuire Florida State University Academic Program Specialist Department of Earth, Ocean, & Atmospheric Science 1011 Academic Way, 2019 EOA Building Tallahassee, FL 32306 850-644-8582 To make an appointment please login to my.fsu.edu and choose the Campus Connect (CC) icon -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Wed Nov 4 13:56:08 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Wed, 4 Nov 2020 18:56:08 +0000 Subject: [Eoas-seminar] Geology Thesis Defense - Daniel Govert - Nov 18, 8:30am - Zoom Message-ID: Geology Thesis Defense - Daniel Govert - Nov 18, 8:30am Title: Investigating the role of marine redox conditions and orbital forcings in an early Silurian mass extinction (Ireviken Event): A deeper water perspective Major Professor: Seth Young Join Zoom Meeting https://fsu.zoom.us/j/98104102326 Meeting ID: 981 0410 2326 One tap mobile +13017158592,,98104102326# US (Germantown) +13126266799,,98104102326# US (Chicago) Dial by your location +1 301 715 8592 US (Germantown) +1 312 626 6799 US (Chicago) +1 646 558 8656 US (New York) +1 253 215 8782 US (Tacoma) +1 346 248 7799 US (Houston) +1 669 900 9128 US (San Jose) Meeting ID: 981 0410 2326 Find your local number: https://fsu.zoom.us/u/anGCsyVIw Join by SIP 98104102326 at zoomcrc.com Join by H.323 162.255.37.11 (US West) 162.255.36.11 (US East) 115.114.131.7 (India Mumbai) 115.114.115.7 (India Hyderabad) 213.19.144.110 (Amsterdam Netherlands) 213.244.140.110 (Germany) 103.122.166.55 (Australia) 149.137.40.110 (Singapore) 64.211.144.160 (Brazil) 69.174.57.160 (Canada) 207.226.132.110 (Japan) Meeting ID: 981 0410 2326 -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Thu Nov 5 10:19:31 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 5 Nov 2020 15:19:31 +0000 Subject: [Eoas-seminar] Meteorology MS Defense for Catherine Buczek, Thursday, November 5th, 2020, 3:30 PM, on Zoom https://fsu.zoom.us/j/95618726792 Message-ID: Meteorology Seminar Catherine R. Buczek M.S. Meteorology Candidate Title: USING MULTI-DIMENSIONAL ENSEMBLE EMPIRICAL MODEL DECOMPOSITION (MEEMD) TO DIAGNOSE CHANGES IN THE NORTHERN HEMISPHERE ANNUAL CYCLE Major Professor: Dr. Zhaohua Wu Date: November 5th, 2020 Time: 3:30 PM Location: Zoom link https://fsu.zoom.us/j/95618726792 ABSTRACT The annual cycle is a relatively large-scale climate process which influences smaller scale climate and meteorological processes. The goal of this research is to diagnose changes to the Northern Hemisphere annual cycle from 1949 to 2017 using multi-dimensional ensemble empirical mode decomposition (MEEMD). MEEMD is a newer decomposition method that is built on empirical mode decomposition (EMD) and ensemble empirical mode decomposition (EEMD; Wu et al. 2009). Compared to EMD and EEMD, MEEMD can be used to decompose spatiotemporal data sets making climate research easier, which often relies heavily on gridded data sets (Wu et al. 2016). In this study, MEEMD is applied to 2-meter pentad temperature data from the National Centers for Environmental Prediction (NCEP)/National Centers for Atmospheric Research (NCAR) Reanalysis 1 (Kalnay et al., 1996) to obtain the amplitude trend of the annual cycle. The amplitude trend of the annual cycle for all points are normalized to compare the trends between polar and tropical latitudes, as the polar latitudes are changing at a more rapid rate than the tropical latitudes, likely due to anthropogenic forcing (IPCC 2019). Results show that the annual cycle is decreasing in polar latitudes and increasing in tropical latitudes. In mid-latitudes, the annual cycle appears to change depending on topography where, in general, the annual cycle is decreasing in highland regions and increasing in lowland regions. Changes in climate modes may also play a role in mid-latitude results but this remains to be studied in depth. Identifying changes to the annual cycle will prove useful for understanding the spatially differing effects of climate change on weather and climate in the Northern Hemisphere. The results of this research serve as a diagnosis and open the opportunity for future research to explain the results of this paper. Shel McGuire Florida State University Academic Program Specialist Department of Earth, Ocean, & Atmospheric Science 1011 Academic Way, 2019 EOA Building Tallahassee, FL 32306 850-644-8582 To make an appointment please login to my.fsu.edu and choose the Campus Connect (CC) icon -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Thu Nov 5 10:20:47 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 5 Nov 2020 15:20:47 +0000 Subject: [Eoas-seminar] Meteorology MS Defense for Michael Secor, Friday, November 6, 2020, 11:00 AM, on Zoom https://us02web.zoom.us/j/81395817136?pwd=SVZaVE5NbGdhNzBPazZkRFd2NDNNdz09 Message-ID: Meteorology Seminar Michael Secor M.S. Meteorology Candidate TITLE: HOW GLOBAL WARMING AND TOPOGRAPHY HAVE IMPACTED THE AMPLITUDE OF SYNOPTIC TEMPERATURE VARIABILITY Major Professor: Dr. Zhaohua Wu Date: November 6th, 2020 Time: 11:00 AM Location: Zoom Meeting https://us02web.zoom.us/j/81395817136?pwd=SVZaVE5NbGdhNzBPazZkRFd2NDNNdz09 ABSTRACT Synoptic scale drivers, mainly extra-tropical cyclones, account for a majority of the day to day temperature variability in the mid-latitudes. This variability is at its greatest in the Northern Hemisphere in Boreal winter when the surface meridional temperature gradient is strong. Global warming has led to a reduction of the surface meridional temperature gradient due to the phenomenon of Arctic Amplification, where the Arctic has been warming at a faster rate than the mid-latitudes or tropics. Changes to the surface meridional temperature gradient will likely alter the baroclinicity of the mid-latitudes and thus extra-tropical cyclones. Understanding how extra-tropical cyclones and their associated temperature variability change in the presence of warming is vital to mitigating the potential outcomes such as an increased chance of heatwaves in regions with reduced variability or an increased chance of cold snaps that could negatively impact farmers in regions of increased variability. Using complementary ensemble empirical mode decomposition (CEEMD) to isolate the synoptic component of daily mean surface temperature, the evolution of the trend of synoptic temperature variability is analyzed. There has been a spatial in-homogeneity of synoptic temperature variability change ranging from -36.5% to 39.2% from 1948-2018 over the continental United States, Northern Mexico, and surrounding oceans. This variability is also temporally non-uniform. The first three decades experienced relatively large decadal rates of change, followed by a two-decade lull, where large regions experienced a reversal in the direction of synoptic temperature variability change. The last two decades have maintained the spatial structure observed in 1998 with the regions expanding in size and changing more quickly with time. Higher altitudes and surrounding regions generally see an increase in variability while elsewhere over land a reduction is observed. This creates a three-band structure over the continental United States. Averaged over the entire domain, an increase in variability in excess of 6% is observed below 30N while a reduction of 4.25% is observed above 30N. Shel McGuire Florida State University Academic Program Specialist Department of Earth, Ocean, & Atmospheric Science 1011 Academic Way, 2019 EOA Building Tallahassee, FL 32306 850-644-8582 To make an appointment please login to my.fsu.edu and choose the Campus Connect (CC) icon -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.png Type: image/png Size: 136 bytes Desc: image001.png URL: From eoas-seminar at lists.fsu.edu Thu Nov 5 15:18:59 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 5 Nov 2020 20:18:59 +0000 Subject: [Eoas-seminar] Meteorology MS Defense for Shuhang Xue, Friday, November 13, 2020, 8:30 AM, on Zoom https://fsu.zoom.com.cn/j/97720754328 Message-ID: Meteorology Seminar Shuhang Xue Masters Meteorology Candidate Title: The linkage between the extreme cold air outbreaks and Rossby-wave breaking over Asia Major Professor: Mark Bourassa, Jeffery Chagnon Date: November 13th, 2020 Time: 8:30 AM Location: Zoom meeting https://fsu.zoom.com.cn/j/97720754328 ABSTRACT The statistical relationship between Rossby-wave breaking and extreme cold air outbreaks (CAO) is investigated for East Asia. Two typical life cycles of upper-level Rossby waves during these CAOs are identified. The extreme CAOs are selected using a quantitative CAO index, which is defined by the integral of equatorward cold air mass flux below 280K isentropic surfaces. Rossby-wave breaking events are identified as anticyclonic and cyclonic according to the orientation of breaking. The breaking extent is calculated as the ratio of longitudes with breaking to the whole longitude range in each of four different regions. The composite analysis shows a significant increase in anticyclonic breaking extent upstream and cyclonic breaking extent downstream during western CAOs, and a decrease in cyclonic breaking extent midstream during eastern CAOs, respectively. During the demise days of extreme CAOs, the breaking extent returns to the level before onset. On the other hand, the average eastern and western CAO indices are notably higher during the days of cyclonic breaking. For the days of anticyclonic breaking, both CAOs tend to have higher indices when the breaking is upstream and lower indices when the breaking is downstream. Chi-Square tests of independence reveal that extreme western and eastern CAOs have prominent dependent relation with Rossby-wave breaking. The former vigorously synchronizes well with anticyclonic breaking upstream and cyclonic breaking downstream, while the latter lags the cyclonic breaking in the midstream for about three days. The composited potential vorticity fields during East Asia extreme CAOs illustrates two archetypes of wave life cycles. One is the anticyclonic wave breaking upstream of the CAOs and jet core; the other is the cyclonic wave breaking downstream of the jet and CAOs. Shel McGuire Florida State University Academic Program Specialist Department of Earth, Ocean, & Atmospheric Science 1011 Academic Way, 2019 EOA Building Tallahassee, FL 32306 850-644-8582 To make an appointment please login to my.fsu.edu and choose the Campus Connect (CC) icon -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Fri Nov 6 09:31:35 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 6 Nov 2020 14:31:35 +0000 Subject: [Eoas-seminar] Meteorology MS Defense for Michael Secor, Friday, November 6, 2020, 11:00 AM, on Zoom https://us02web.zoom.us/j/81395817136?pwd=SVZaVE5NbGdhNzBPazZkRFd2NDNNdz09 Message-ID: Meteorology Seminar Michael Secor M.S. Meteorology Candidate TITLE: HOW GLOBAL WARMING AND TOPOGRAPHY HAVE IMPACTED THE AMPLITUDE OF SYNOPTIC TEMPERATURE VARIABILITY Major Professor: Dr. Zhaohua Wu Date: November 6th, 2020 Time: 11:00 AM Location: Zoom Meeting https://us02web.zoom.us/j/81395817136?pwd=SVZaVE5NbGdhNzBPazZkRFd2NDNNdz09 ABSTRACT Synoptic scale drivers, mainly extra-tropical cyclones, account for a majority of the day to day temperature variability in the mid-latitudes. This variability is at its greatest in the Northern Hemisphere in Boreal winter when the surface meridional temperature gradient is strong. Global warming has led to a reduction of the surface meridional temperature gradient due to the phenomenon of Arctic Amplification, where the Arctic has been warming at a faster rate than the mid-latitudes or tropics. Changes to the surface meridional temperature gradient will likely alter the baroclinicity of the mid-latitudes and thus extra-tropical cyclones. Understanding how extra-tropical cyclones and their associated temperature variability change in the presence of warming is vital to mitigating the potential outcomes such as an increased chance of heatwaves in regions with reduced variability or an increased chance of cold snaps that could negatively impact farmers in regions of increased variability. Using complementary ensemble empirical mode decomposition (CEEMD) to isolate the synoptic component of daily mean surface temperature, the evolution of the trend of synoptic temperature variability is analyzed. There has been a spatial in-homogeneity of synoptic temperature variability change ranging from -36.5% to 39.2% from 1948-2018 over the continental United States, Northern Mexico, and surrounding oceans. This variability is also temporally non-uniform. The first three decades experienced relatively large decadal rates of change, followed by a two-decade lull, where large regions experienced a reversal in the direction of synoptic temperature variability change. The last two decades have maintained the spatial structure observed in 1998 with the regions expanding in size and changing more quickly with time. Higher altitudes and surrounding regions generally see an increase in variability while elsewhere over land a reduction is observed. This creates a three-band structure over the continental United States. Averaged over the entire domain, an increase in variability in excess of 6% is observed below 30N while a reduction of 4.25% is observed above 30N. Shel McGuire Florida State University Academic Program Specialist Department of Earth, Ocean, & Atmospheric Science 1011 Academic Way, 2019 EOA Building Tallahassee, FL 32306 850-644-8582 To make an appointment please login to my.fsu.edu and choose the Campus Connect (CC) icon -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.png Type: image/png Size: 136 bytes Desc: image001.png URL: From eoas-seminar at lists.fsu.edu Fri Nov 6 11:24:52 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 6 Nov 2020 16:24:52 +0000 Subject: [Eoas-seminar] Michael's defense meeting site, continued. Message-ID: https://fsu.zoom.us/j/91875520948 Zhaohua Wu is inviting you to a scheduled Zoom meeting. Topic: Michael's Defense Time: Nov 6, 2020 12:00 PM Eastern Time (US and Canada) Join Zoom Meeting https://fsu.zoom.us/j/91875520948 Meeting ID: 918 7552 0948 One tap mobile +13017158592,,91875520948# US (Washington D.C) +13126266799,,91875520948# US (Chicago) Dial by your location +1 301 715 8592 US (Washington D.C) +1 312 626 6799 US (Chicago) +1 646 558 8656 US (New York) +1 669 900 9128 US (San Jose) +1 253 215 8782 US (Tacoma) +1 346 248 7799 US (Houston) Meeting ID: 918 7552 0948 Find your local number: https://fsu.zoom.us/u/acq5Cy9Myr Join by SIP 91875520948 at zoomcrc.com Join by H.323 162.255.37.11 (US West) 162.255.36.11 (US East) 115.114.131.7 (India Mumbai) 115.114.115.7 (India Hyderabad) 213.19.144.110 (Amsterdam Netherlands) 213.244.140.110 (Germany) 103.122.166.55 (Australia) 149.137.40.110 (Singapore) 64.211.144.160 (Brazil) 69.174.57.160 (Canada) 207.226.132.110 (Japan) Meeting ID: 918 7552 0948 -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Fri Nov 6 13:16:27 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 6 Nov 2020 18:16:27 +0000 Subject: [Eoas-seminar] Meteorology MS Defense for Gwen Dmitruk,POSTPONED Message-ID: Postponed - please watch for an updated announcement next week. Meteorology Seminar Gwendolyn Dmitruk M.S. Meteorology Candidate Title: A globe-circling synoptic-Scale winter disturbance In Northern hemisphere midlatitudes Major Professor: Dr. Jon Ahlquist Date: Postponed Time: 11:30 AM Location: Zoom Meeting (URL: https://fsu.zoom.us/j/99786563905?pwd=RWlYeWZLRGE4V1Vja0duK3l0UWZkQT09) ABSTRACT Preliminary studies by former FSU students Lydia Stefanova and Alec Bogdanoff documented a synoptic-scale disturbance that can travel eastward long distances around the globe with a period of about 20 days (roughly 9-10 days to go halfway around). These earlier studies looked at only at one pressure level, 500 hPa. The present study extends this work by adding multiple levels with a better, longer data set (1958-2018 from JRA-55 reanalysis on 1.25-degree lat-lon grid) and removing the annual cycle. The two centers of action are off the northeastern coasts of Asia and North America, where relative vorticity and height fluctuations are large. The starting point was identifying the 100 most prominent during 61 years of 150-day cold seasons beginning on 1 November of 1958-2018. Global composites spanning 25 days before to 25 days after the 100 most extreme relative vorticity maxima at 500 hPa were computed for multiple pressure levels. This allowed for observation of the disturbance from 1000 hPa to 1 hPa. At the time of the vorticity maxima, the composite shows an untilted feature about 560 km in diameter extending from 1000 hPa to 100 hPa, decaying rapidly above that level. Composites confirmed the existance of the wave pattern, which travels eastward across the Atlantic with maintained strength after reaching a peak off the cost of Nova Scotia (t = 0). It rapidly loses this strength and gains a notable southward component to its trajectory after reaching the European coastline, but still visibly treks eastward across Asia in its weakened state. Upon reaching the Pacific (at t = 9), it surges in relative vorticity strength again. This strength is likewise maintained across the North Pacific, until it similarly and significantly weakens in strength and attains a southeastern trajectory upon contact with the North America, only to reemerge in a week's time to repeat the pattern once again (t = 19) increasing and maintaining strength along the North Atlantic. Similar results are repeated using height fall composites, with wave signal location, speed, and strength mirroring that of the relative vorticity composites. Case studies of individual events allow for the indexing and chronicling of the events life cycle. Shel McGuire Florida State University Academic Program Specialist Department of Earth, Ocean, & Atmospheric Science 1011 Academic Way, 2019 EOA Building Tallahassee, FL 32306 850-644-8582 To make an appointment please login to my.fsu.edu and choose the Campus Connect (CC) icon -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Mon Nov 9 10:51:50 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 9 Nov 2020 15:51:50 +0000 Subject: [Eoas-seminar] MET Seminar Series, Thursday November 12 at 3:30 PM - Dr. Catherine Pomposi (USAID) Message-ID: Dear all, Please join us for our next Meteorology seminar on Thursday November 12 at 3:30 PM, to be given by Dr. Catherine Pomposi (USAID). Dr. Pomposi will share her recent work on understanding recent precipitation variability from both a climate science and public policy perspective, based on her unique experiences in academic research, as a legislative fellow in the Senate office of Kamala Harris, and in her current position as a development research policy and program specialist at USAID. Title: Understanding recent precipitation variability: from a scientific to a policy and development lens Abstract: ?Science policy? is a buzz phrase without a common definition, and it is often hard to pinpoint where science has been infused in the policy-making process. It can also be difficult to determine how one can effectively engage in the policy realm as a scientist. In this talk, I hope to demystify some of these challenges, drawing from recent experiences. First, I will present a high level overview of a recent study seeking to untangle the precipitation signal in the West African Sahel during recent El Ni?o years. Prior research has shown that dry conditions tend to persist in the Sahel when El Ni?o develops. Yet, during the historic 2015 El Ni?o, Sahel summer precipitation was anomalously high, particularly in the second half of the season. This seeming inconsistency motivates a reexamination of the variability of precipitation during recent El Ni?o years. Results show that nuance exists in the precipitation signal and must be effectively communicated for societal relevance of the research. Additionally, I will highlight how lessons learned as a researcher during this study provided a strong foundation for a transition to science policy work, including with a legislative and development lens. Zoom Link: https://fsu.zoom.us/j/94352158844?pwd=ckd5RnRUcldwaSthMnRrTlJsb3NDdz09 Meeting ID: 943 5215 8844 Passcode: 451232 One tap mobile +13126266799,,94352158844# US (Chicago) +16465588656,,94352158844# US (New York) Please join us starting from 3 PM to ?meet the speaker? and have informal discussion prior to the start of the seminar. GRADUATE STUDENTS: There will be a student Q&A with the speaker to be held immediately following the seminar - so students, please join and stay after the seminar for your chance to talk with Dr. Pomposi about work/life/career topics. Graduate student Jake Carstens will moderate the student Q&A. The seminar will be recorded if you are unable to attend live, but we hope to see many of you there! All in EOAS are welcome to attend. Cheers, Allison, Zhaohua, & Philip Future MET Seminars: November 19: Prof. Eric Winsberg (University of South Florida): "Why study solar radiation management? A case study in the cost of acquiring new evidence? December 3: Dr. Ryan Truchelut (WeatherTiger): "From the "Weather Guy" to WeatherTiger: Explorations in Scientific Entrepreneurship? ?????????????????? Allison Wing, Ph.D. Assistant Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: MET_Seminar_Flyer_Pomposi.pdf Type: application/pdf Size: 11301280 bytes Desc: MET_Seminar_Flyer_Pomposi.pdf URL: From eoas-seminar at lists.fsu.edu Mon Nov 9 12:28:12 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 9 Nov 2020 12:28:12 -0500 Subject: [Eoas-seminar] EOAS Colloquium Firday Nov 13 at 3:30pm Message-ID: Please join us Friday at 3:30 on zoom for this week's EOAS Colloquium speaker: Dr. Sharon Nicholson of EOAS at FSU Time: Nov 13, 2020 03:30 PM Eastern Time (US and Canada) Join Zoom Meeting https://fsu.zoom.us/j/93321272960 Meeting ID: 933 2127 2960 *RAINFALL ENHANCEMENT OVER THE EAST AFRICAN LAKES* The numerous lakes of the East African Rift Valley are a major resource for the countries of the region.The largest, Lake Victoria, sustains the livelihood of some 30 million people and its level determines the flow the Nile, the lifeblood of Egypt, Sudan and South Sudan.Rainfall over the lake occurs mainly at night and in the early morning and is known to be enhanced by some 50% compared to rainfall in its catchment.The enhancement is a combined result of lake/land breezes and mountain/valley winds. The nocturnal rainfall is coupled with intense thunderstorms, which result in some 5,000 deaths annually. This talk presents an in-depth view of the lake-effect rains over Lake Victoria and a brief overview of the enhancement by other East African lakes.Both the seasonal and diurnal cycles over Lake Victoria are analyzed in the context of meteorological parameters that might control rainfall.These include winds and wind divergence, vertical motion, convective available potential energy (C.A.P.E.) and Mesoscale Convective Systems (MCSs).The meteorological analysis is based on ERA5.Several satellite rainfall products were evaluated and TRMM 3B43 and 3B42 were determined to perform best in this region and utilized for the analyses. Several new conclusions about the lake-effect rains have emerged.For one, there is substantial enhancement of rainfall over Lake Victoria in all months, even during the two dry seasons.Rainfall enhancement is also apparent over numerous other lakes in the region, even small ones.Some of the enhancement occurs during the dry season when the catchment is rainless.The magnitude of the enhancement is driven by large-scale meteorological factors as opposed to local conditions over the lakes.For example, the patterns of low-level divergence over the lake are similar in dry season and wet season months. Most of the rainfall over Lake Victoria is from MCSs that develop in situ at night. A surprising conclusion that emerged is that the relatively new IMERG data of the Global Precipitation Measurement (GPM) mission vastly overestimates rainfall over inland water bodies, such as Lakes Victoria, Malawi, and Tanganyika.This appears to be related to the passive microwave sources incorporated into the final product. Victoria_satellite.jpg -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Thu Nov 12 09:30:10 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 12 Nov 2020 09:30:10 -0500 Subject: [Eoas-seminar] MET Seminar Series, Thursday November 12 at 3:30 PM - Dr. Catherine Pomposi (USAID) In-Reply-To: References: Message-ID: Dear all, Just a reminder of our Meteorology seminar this afternoon at 3:30 PM, where Dr. Catherine Pomposi will discuss ?Understanding recent precipitation variability: from a scientific to a policy and development lens?. > Zoom Link: https://fsu.zoom.us/j/94352158844?pwd=ckd5RnRUcldwaSthMnRrTlJsb3NDdz09 > GRADUATE STUDENTS: There will be a student Q&A with the speaker to be held immediately following the seminar - so students, please join and stay after the seminar for your chance to talk with Dr. Pomposi about work/life/career topics. Hope to see you there! Cheers, Allison ?????????????????? Allison Wing, Ph.D. Assistant Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu > On Nov 9, 2020, at 10:51 AM, eoas-seminar--- via Eoas-seminar wrote: > > Dear all, > > Please join us for our next Meteorology seminar on Thursday November 12 at 3:30 PM, to be given by Dr. Catherine Pomposi (USAID) . Dr. Pomposi will share her recent work on understanding recent precipitation variability from both a climate science and public policy perspective, based on her unique experiences in academic research, as a legislative fellow in the Senate office of Kamala Harris, and in her current position as a development research policy and program specialist at USAID. > > Title: > Understanding recent precipitation variability: from a scientific to a policy and development lens > > Abstract: > ?Science policy? is a buzz phrase without a common definition, and it is often hard to pinpoint where science has been infused in the policy-making process. It can also be difficult to determine how one can effectively engage in the policy realm as a scientist. In this talk, I hope to demystify some of these challenges, drawing from recent experiences. First, I will present a high level overview of a recent study seeking to untangle the precipitation signal in the West African Sahel during recent El Ni?o years. Prior research has shown that dry conditions tend to persist in the Sahel when El Ni?o develops. Yet, during the historic 2015 El Ni?o, Sahel summer precipitation was anomalously high, particularly in the second half of the season. This seeming inconsistency motivates a reexamination of the variability of precipitation during recent El Ni?o years. Results show that nuance exists in the precipitation signal and must be effectively communicated for societal relevance of the research. Additionally, I will highlight how lessons learned as a researcher during this study provided a strong foundation for a transition to science policy work, including with a legislative and development lens. > > Zoom Link: https://fsu.zoom.us/j/94352158844?pwd=ckd5RnRUcldwaSthMnRrTlJsb3NDdz09 > > Meeting ID: 943 5215 8844 > Passcode: 451232 > One tap mobile > +13126266799,,94352158844# US (Chicago) > +16465588656,,94352158844# US (New York) > > Please join us starting from 3 PM to ?meet the speaker? and have informal discussion prior to the start of the seminar. > > GRADUATE STUDENTS: There will be a student Q&A with the speaker to be held immediately following the seminar - so students, please join and stay after the seminar for your chance to talk with Dr. Pomposi about work/life/career topics. Graduate student Jake Carstens will moderate the student Q&A. > > The seminar will be recorded if you are unable to attend live, but we hope to see many of you there! All in EOAS are welcome to attend. > > Cheers, > > Allison, Zhaohua, & Philip > > Future MET Seminars: > November 19: Prof. Eric Winsberg (University of South Florida): "Why study solar radiation management? A case study in the cost of acquiring new evidence? > December 3: Dr. Ryan Truchelut (WeatherTiger): "From the "Weather Guy" to WeatherTiger: Explorations in Scientific Entrepreneurship? > > > ?????????????????? > Allison Wing, Ph.D. > Assistant Professor > Earth, Ocean and Atmospheric Science > Florida State University > awing at fsu.edu > > > > _______________________________________________ > Eoas-seminar mailing list > Eoas-seminar at lists.fsu.edu > https://lists.fsu.edu/mailman/listinfo/eoas-seminar -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Thu Nov 12 11:00:52 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 12 Nov 2020 16:00:52 +0000 Subject: [Eoas-seminar] Meteorology MS Defense for Shuhang Xue, Friday, November 13, 2020, 8:30 AM, on Zoom https://fsu.zoom.com.cn/j/97720754328 Message-ID: Meteorology Seminar Shuhang Xue Masters Meteorology Candidate Title: The linkage between the extreme cold air outbreaks and Rossby-wave breaking over Asia Major Professor: Mark Bourassa, Jeffery Chagnon Date: November 13th, 2020 Time: 8:30 AM Location: Zoom meeting https://fsu.zoom.com.cn/j/97720754328 ABSTRACT The statistical relationship between Rossby-wave breaking and extreme cold air outbreaks (CAO) is investigated for East Asia. Two typical life cycles of upper-level Rossby waves during these CAOs are identified. The extreme CAOs are selected using a quantitative CAO index, which is defined by the integral of equatorward cold air mass flux below 280K isentropic surfaces. Rossby-wave breaking events are identified as anticyclonic and cyclonic according to the orientation of breaking. The breaking extent is calculated as the ratio of longitudes with breaking to the whole longitude range in each of four different regions. The composite analysis shows a significant increase in anticyclonic breaking extent upstream and cyclonic breaking extent downstream during western CAOs, and a decrease in cyclonic breaking extent midstream during eastern CAOs, respectively. During the demise days of extreme CAOs, the breaking extent returns to the level before onset. On the other hand, the average eastern and western CAO indices are notably higher during the days of cyclonic breaking. For the days of anticyclonic breaking, both CAOs tend to have higher indices when the breaking is upstream and lower indices when the breaking is downstream. Chi-Square tests of independence reveal that extreme western and eastern CAOs have prominent dependent relation with Rossby-wave breaking. The former vigorously synchronizes well with anticyclonic breaking upstream and cyclonic breaking downstream, while the latter lags the cyclonic breaking in the midstream for about three days. The composited potential vorticity fields during East Asia extreme CAOs illustrates two archetypes of wave life cycles. One is the anticyclonic wave breaking upstream of the CAOs and jet core; the other is the cyclonic wave breaking downstream of the jet and CAOs. Shel McGuire Florida State University Academic Program Specialist Department of Earth, Ocean, & Atmospheric Science 1011 Academic Way, 2019 EOA Building Tallahassee, FL 32306 850-644-8582 To make an appointment please login to my.fsu.edu and choose the Campus Connect (CC) icon -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Thu Nov 12 14:33:19 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 12 Nov 2020 19:33:19 +0000 Subject: [Eoas-seminar] Diversity, Equity, and Inclusion committee meeting Message-ID: The next meeting of the EOAS Diversity, Equity, and Inclusion Committee will be next Weds, Nov. 18th, at 4 pm. We will be discussing: -literature-based suggestions that address specific challenges for improving recruitment and retention of diverse undergraduate, graduate, post-doc, and faculty populations -an affirmative statement of EOAS's commitment to diversity, equity, and inclusion -generating a list of resources (fellowships, workshops, best-practices, etc.) to be posted on an EOAS webpage All are welcome to join the Zoom meeting: https://fsu.zoom.us/j/99084144599 Sincerely, Angie Knapp -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Thu Nov 12 15:26:32 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 12 Nov 2020 20:26:32 +0000 Subject: [Eoas-seminar] MET Seminar Series, Thursday November 12 at 3:30 PM - Dr. Catherine Pomposi (USAID) In-Reply-To: References: Message-ID: Just a reminder, starting in a few minutes! ?????????????????? Allison Wing, Ph.D. Assistant Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu On Nov 12, 2020, at 9:30 AM, eoas-seminar--- via Eoas-seminar > wrote: Dear all, Just a reminder of our Meteorology seminar this afternoon at 3:30 PM, where Dr. Catherine Pomposi will discuss ?Understanding recent precipitation variability: from a scientific to a policy and development lens?. Zoom Link: https://fsu.zoom.us/j/94352158844?pwd=ckd5RnRUcldwaSthMnRrTlJsb3NDdz09 GRADUATE STUDENTS: There will be a student Q&A with the speaker to be held immediately following the seminar - so students, please join and stay after the seminar for your chance to talk with Dr. Pomposi about work/life/career topics. Hope to see you there! Cheers, Allison ?????????????????? Allison Wing, Ph.D. Assistant Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu On Nov 9, 2020, at 10:51 AM, eoas-seminar--- via Eoas-seminar > wrote: Dear all, Please join us for our next Meteorology seminar on Thursday November 12 at 3:30 PM, to be given by Dr. Catherine Pomposi (USAID). Dr. Pomposi will share her recent work on understanding recent precipitation variability from both a climate science and public policy perspective, based on her unique experiences in academic research, as a legislative fellow in the Senate office of Kamala Harris, and in her current position as a development research policy and program specialist at USAID. Title: Understanding recent precipitation variability: from a scientific to a policy and development lens Abstract: ?Science policy? is a buzz phrase without a common definition, and it is often hard to pinpoint where science has been infused in the policy-making process. It can also be difficult to determine how one can effectively engage in the policy realm as a scientist. In this talk, I hope to demystify some of these challenges, drawing from recent experiences. First, I will present a high level overview of a recent study seeking to untangle the precipitation signal in the West African Sahel during recent El Ni?o years. Prior research has shown that dry conditions tend to persist in the Sahel when El Ni?o develops. Yet, during the historic 2015 El Ni?o, Sahel summer precipitation was anomalously high, particularly in the second half of the season. This seeming inconsistency motivates a reexamination of the variability of precipitation during recent El Ni?o years. Results show that nuance exists in the precipitation signal and must be effectively communicated for societal relevance of the research. Additionally, I will highlight how lessons learned as a researcher during this study provided a strong foundation for a transition to science policy work, including with a legislative and development lens. Zoom Link: https://fsu.zoom.us/j/94352158844?pwd=ckd5RnRUcldwaSthMnRrTlJsb3NDdz09 Meeting ID: 943 5215 8844 Passcode: 451232 One tap mobile +13126266799,,94352158844# US (Chicago) +16465588656,,94352158844# US (New York) Please join us starting from 3 PM to ?meet the speaker? and have informal discussion prior to the start of the seminar. GRADUATE STUDENTS: There will be a student Q&A with the speaker to be held immediately following the seminar - so students, please join and stay after the seminar for your chance to talk with Dr. Pomposi about work/life/career topics. Graduate student Jake Carstens will moderate the student Q&A. The seminar will be recorded if you are unable to attend live, but we hope to see many of you there! All in EOAS are welcome to attend. Cheers, Allison, Zhaohua, & Philip Future MET Seminars: November 19: Prof. Eric Winsberg (University of South Florida): "Why study solar radiation management? A case study in the cost of acquiring new evidence? December 3: Dr. Ryan Truchelut (WeatherTiger): "From the "Weather Guy" to WeatherTiger: Explorations in Scientific Entrepreneurship? ?????????????????? Allison Wing, Ph.D. Assistant Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu _______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar _______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Thu Nov 12 17:42:26 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 12 Nov 2020 22:42:26 +0000 Subject: [Eoas-seminar] MET Seminar Series, Thursday November 12 at 3:30 PM - Dr. Catherine Pomposi (USAID) In-Reply-To: References: Message-ID: Thanks all who attend today?s seminar. If you missed it and would like a link to the recording, please contact awing at fsu.edu. Cheers, Allison ?????????????????? Allison Wing, Ph.D. Assistant Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu On Nov 12, 2020, at 3:26 PM, eoas-seminar--- via Eoas-seminar > wrote: Just a reminder, starting in a few minutes! ?????????????????? Allison Wing, Ph.D. Assistant Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu On Nov 12, 2020, at 9:30 AM, eoas-seminar--- via Eoas-seminar > wrote: Dear all, Just a reminder of our Meteorology seminar this afternoon at 3:30 PM, where Dr. Catherine Pomposi will discuss ?Understanding recent precipitation variability: from a scientific to a policy and development lens?. Zoom Link: https://fsu.zoom.us/j/94352158844?pwd=ckd5RnRUcldwaSthMnRrTlJsb3NDdz09 GRADUATE STUDENTS: There will be a student Q&A with the speaker to be held immediately following the seminar - so students, please join and stay after the seminar for your chance to talk with Dr. Pomposi about work/life/career topics. Hope to see you there! Cheers, Allison ?????????????????? Allison Wing, Ph.D. Assistant Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu On Nov 9, 2020, at 10:51 AM, eoas-seminar--- via Eoas-seminar > wrote: Dear all, Please join us for our next Meteorology seminar on Thursday November 12 at 3:30 PM, to be given by Dr. Catherine Pomposi (USAID). Dr. Pomposi will share her recent work on understanding recent precipitation variability from both a climate science and public policy perspective, based on her unique experiences in academic research, as a legislative fellow in the Senate office of Kamala Harris, and in her current position as a development research policy and program specialist at USAID. Title: Understanding recent precipitation variability: from a scientific to a policy and development lens Abstract: ?Science policy? is a buzz phrase without a common definition, and it is often hard to pinpoint where science has been infused in the policy-making process. It can also be difficult to determine how one can effectively engage in the policy realm as a scientist. In this talk, I hope to demystify some of these challenges, drawing from recent experiences. First, I will present a high level overview of a recent study seeking to untangle the precipitation signal in the West African Sahel during recent El Ni?o years. Prior research has shown that dry conditions tend to persist in the Sahel when El Ni?o develops. Yet, during the historic 2015 El Ni?o, Sahel summer precipitation was anomalously high, particularly in the second half of the season. This seeming inconsistency motivates a reexamination of the variability of precipitation during recent El Ni?o years. Results show that nuance exists in the precipitation signal and must be effectively communicated for societal relevance of the research. Additionally, I will highlight how lessons learned as a researcher during this study provided a strong foundation for a transition to science policy work, including with a legislative and development lens. Zoom Link: https://fsu.zoom.us/j/94352158844?pwd=ckd5RnRUcldwaSthMnRrTlJsb3NDdz09 Meeting ID: 943 5215 8844 Passcode: 451232 One tap mobile +13126266799,,94352158844# US (Chicago) +16465588656,,94352158844# US (New York) Please join us starting from 3 PM to ?meet the speaker? and have informal discussion prior to the start of the seminar. GRADUATE STUDENTS: There will be a student Q&A with the speaker to be held immediately following the seminar - so students, please join and stay after the seminar for your chance to talk with Dr. Pomposi about work/life/career topics. Graduate student Jake Carstens will moderate the student Q&A. The seminar will be recorded if you are unable to attend live, but we hope to see many of you there! All in EOAS are welcome to attend. Cheers, Allison, Zhaohua, & Philip Future MET Seminars: November 19: Prof. Eric Winsberg (University of South Florida): "Why study solar radiation management? A case study in the cost of acquiring new evidence? December 3: Dr. Ryan Truchelut (WeatherTiger): "From the "Weather Guy" to WeatherTiger: Explorations in Scientific Entrepreneurship? ?????????????????? Allison Wing, Ph.D. Assistant Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu _______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar _______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar _______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Thu Nov 12 18:49:27 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 12 Nov 2020 23:49:27 +0000 Subject: [Eoas-seminar] MET Seminar Series, Thursday November 12 at 3:30 PM - Dr. Catherine Pomposi (USAID) In-Reply-To: References: , Message-ID: Hi Allison, I'm the new Director for the marine lab and I'm sure we haven't met yet. Hello! I had to miss this presentation, but found the topic very interesting. Please send me a link to the recording when you have one. Sincerely, Joel Joel Trexler ________________________________ From: Eoas-seminar on behalf of eoas-seminar--- via Eoas-seminar Sent: Thursday, November 12, 2020 5:42 PM To: eoas-seminar at lists.fsu.edu Subject: Re: [Eoas-seminar] MET Seminar Series, Thursday November 12 at 3:30 PM - Dr. Catherine Pomposi (USAID) Thanks all who attend today?s seminar. If you missed it and would like a link to the recording, please contact awing at fsu.edu. Cheers, Allison ?????????????????? Allison Wing, Ph.D. Assistant Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu On Nov 12, 2020, at 3:26 PM, eoas-seminar--- via Eoas-seminar > wrote: Just a reminder, starting in a few minutes! ?????????????????? Allison Wing, Ph.D. Assistant Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu On Nov 12, 2020, at 9:30 AM, eoas-seminar--- via Eoas-seminar > wrote: Dear all, Just a reminder of our Meteorology seminar this afternoon at 3:30 PM, where Dr. Catherine Pomposi will discuss ?Understanding recent precipitation variability: from a scientific to a policy and development lens?. Zoom Link: https://fsu.zoom.us/j/94352158844?pwd=ckd5RnRUcldwaSthMnRrTlJsb3NDdz09 GRADUATE STUDENTS: There will be a student Q&A with the speaker to be held immediately following the seminar - so students, please join and stay after the seminar for your chance to talk with Dr. Pomposi about work/life/career topics. Hope to see you there! Cheers, Allison ?????????????????? Allison Wing, Ph.D. Assistant Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu On Nov 9, 2020, at 10:51 AM, eoas-seminar--- via Eoas-seminar > wrote: Dear all, Please join us for our next Meteorology seminar on Thursday November 12 at 3:30 PM, to be given by Dr. Catherine Pomposi (USAID). Dr. Pomposi will share her recent work on understanding recent precipitation variability from both a climate science and public policy perspective, based on her unique experiences in academic research, as a legislative fellow in the Senate office of Kamala Harris, and in her current position as a development research policy and program specialist at USAID. Title: Understanding recent precipitation variability: from a scientific to a policy and development lens Abstract: ?Science policy? is a buzz phrase without a common definition, and it is often hard to pinpoint where science has been infused in the policy-making process. It can also be difficult to determine how one can effectively engage in the policy realm as a scientist. In this talk, I hope to demystify some of these challenges, drawing from recent experiences. First, I will present a high level overview of a recent study seeking to untangle the precipitation signal in the West African Sahel during recent El Ni?o years. Prior research has shown that dry conditions tend to persist in the Sahel when El Ni?o develops. Yet, during the historic 2015 El Ni?o, Sahel summer precipitation was anomalously high, particularly in the second half of the season. This seeming inconsistency motivates a reexamination of the variability of precipitation during recent El Ni?o years. Results show that nuance exists in the precipitation signal and must be effectively communicated for societal relevance of the research. Additionally, I will highlight how lessons learned as a researcher during this study provided a strong foundation for a transition to science policy work, including with a legislative and development lens. Zoom Link: https://fsu.zoom.us/j/94352158844?pwd=ckd5RnRUcldwaSthMnRrTlJsb3NDdz09 Meeting ID: 943 5215 8844 Passcode: 451232 One tap mobile +13126266799,,94352158844# US (Chicago) +16465588656,,94352158844# US (New York) Please join us starting from 3 PM to ?meet the speaker? and have informal discussion prior to the start of the seminar. GRADUATE STUDENTS: There will be a student Q&A with the speaker to be held immediately following the seminar - so students, please join and stay after the seminar for your chance to talk with Dr. Pomposi about work/life/career topics. Graduate student Jake Carstens will moderate the student Q&A. The seminar will be recorded if you are unable to attend live, but we hope to see many of you there! All in EOAS are welcome to attend. Cheers, Allison, Zhaohua, & Philip Future MET Seminars: November 19: Prof. Eric Winsberg (University of South Florida): "Why study solar radiation management? A case study in the cost of acquiring new evidence? December 3: Dr. Ryan Truchelut (WeatherTiger): ">From the "Weather Guy" to WeatherTiger: Explorations in Scientific Entrepreneurship? ?????????????????? Allison Wing, Ph.D. Assistant Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu _______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar _______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar _______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Fri Nov 13 08:36:18 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 13 Nov 2020 08:36:18 -0500 Subject: [Eoas-seminar] New link for Thea's defense Message-ID: The link is not working for Thea's defense. We will use https://fsu.zoom.us/j/96168058114?pwd=a3lEQ3FzSVdsbTFJd2xZckFnMVpHdz09 Meeting ID: 961 6805 8114 Passcode: 310696 Cheers, Mark From eoas-seminar at lists.fsu.edu Fri Nov 13 08:41:34 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 13 Nov 2020 08:41:34 -0500 Subject: [Eoas-seminar] New link for Thea's defense In-Reply-To: References: Message-ID: Due to several complications, we will be starting at 8:45 AM. Cheers, Mark On 11/13/2020 8:36 AM, eoas-seminar--- via Eoas-seminar wrote: > The link is not working for Thea's defense. We will use > > https://fsu.zoom.us/j/96168058114?pwd=a3lEQ3FzSVdsbTFJd2xZckFnMVpHdz09 > > Meeting ID: 961 6805 8114 > Passcode: 310696 > > Cheers, > Mark > > > _______________________________________________ > Eoas-seminar mailing list > Eoas-seminar at lists.fsu.edu > https://lists.fsu.edu/mailman/listinfo/eoas-seminar From eoas-seminar at lists.fsu.edu Fri Nov 13 09:02:16 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 13 Nov 2020 09:02:16 -0500 Subject: [Eoas-seminar] REMINDER TODAY - Fwd: EOAS Colloquium Firday Nov 13 at 3:30pm In-Reply-To: References: Message-ID: Please join us TODAY at 3:30 on zoom for this week's EOAS Colloquium speaker: Dr. Sharon Nicholson of EOAS at FSU Time: Nov 13, 2020 03:30 PM Eastern Time (US and Canada) Join Zoom Meeting https://fsu.zoom.us/j/93321272960 Meeting ID: 933 2127 2960 *RAINFALL ENHANCEMENT OVER THE EAST AFRICAN LAKES* The numerous lakes of the East African Rift Valley are a major resource for the countries of the region.The largest, Lake Victoria, sustains the livelihood of some 30 million people and its level determines the flow the Nile, the lifeblood of Egypt, Sudan and South Sudan.Rainfall over the lake occurs mainly at night and in the early morning and is known to be enhanced by some 50% compared to rainfall in its catchment.The enhancement is a combined result of lake/land breezes and mountain/valley winds. The nocturnal rainfall is coupled with intense thunderstorms, which result in some 5,000 deaths annually. This talk presents an in-depth view of the lake-effect rains over Lake Victoria and a brief overview of the enhancement by other East African lakes.Both the seasonal and diurnal cycles over Lake Victoria are analyzed in the context of meteorological parameters that might control rainfall.These include winds and wind divergence, vertical motion, convective available potential energy (C.A.P.E.) and Mesoscale Convective Systems (MCSs).The meteorological analysis is based on ERA5.Several satellite rainfall products were evaluated and TRMM 3B43 and 3B42 were determined to perform best in this region and utilized for the analyses. Several new conclusions about the lake-effect rains have emerged.For one, there is substantial enhancement of rainfall over Lake Victoria in all months, even during the two dry seasons.Rainfall enhancement is also apparent over numerous other lakes in the region, even small ones.Some of the enhancement occurs during the dry season when the catchment is rainless.The magnitude of the enhancement is driven by large-scale meteorological factors as opposed to local conditions over the lakes.For example, the patterns of low-level divergence over the lake are similar in dry season and wet season months. Most of the rainfall over Lake Victoria is from MCSs that develop in situ at night. A surprising conclusion that emerged is that the relatively new IMERG data of the Global Precipitation Measurement (GPM) mission vastly overestimates rainfall over inland water bodies, such as Lakes Victoria, Malawi, and Tanganyika.This appears to be related to the passive microwave sources incorporated into the final product. Victoria_satellite.jpg --> -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Fri Nov 13 15:36:24 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 13 Nov 2020 20:36:24 +0000 Subject: [Eoas-seminar] EOAS Graduate students make the finals in the Three Minute Thesis Competition Message-ID: Congratulations to Kelly Graham and Yin Zhang for being selected as finalists in the Three Minute Thesis Competition. Now these students need our support. Please take a minute to review the presentations and vote for the finalists. Voting ends on November 17th! Shel [cid:image001.jpg at 01D6B9D2.BDD39880] Join us in congratulating the 2020 Three Minute Thesis Finalists: Mark Duslak, Educational Leadership & Policy Studies Kelly Graham, Earth, Ocean & Atmospheric Science Matthew Martenson, Nutrition, Food, and Exercise Sciences Temidayo Abiola Oloye, Materials Science and Engineering Chris Omni, Art Education Annie Reynolds, Nursing Elham Shekari, Urban & Regional Planning Wen-Chi Shie, Public Administration & Policy Yin Zhang, Earth, Ocean & Atmospheric Science Vote for the People's Choice Award! Click Here to view Finalist Presentations (ctrl + click to open links) Select your favorite presentation and Vote Here. Voting closes on November 17th. Winners will be announced the week of November 23, 2020. -The Graduate School Shel McGuire Florida State University Academic Program Specialist Department of Earth, Ocean, & Atmospheric Science 1011 Academic Way, 2019 EOA Building Tallahassee, FL 32306 850-644-8582 To make an appointment please login to my.fsu.edu and choose the Campus Connect (CC) icon -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.jpg Type: image/jpeg Size: 26472 bytes Desc: image001.jpg URL: From eoas-seminar at lists.fsu.edu Mon Nov 16 09:56:43 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 16 Nov 2020 14:56:43 +0000 Subject: [Eoas-seminar] Meteorology MS Defense for Darin Mister, Monday, Postponed Message-ID: Postponed Meteorology Seminar Darin Mister M.S. Meteorology Candidate TITLE: THE IMPACT OF SURFACE OCEAN CURRENTS ON TURBULENT HEAT FLUXES GENERATED BY ATLANTIC EXTRATROPICAL CYCLONES Major Professor: Dr. Mark Bourassa Date: Time: Location: Zoom meeting ABSTRACT Extratropical cyclones are responsible for the generation of large amounts of latent and sensible heat fluxes over the ocean. These fluxes are the main mechanism by which the ocean influences the atmosphere. Extratropical cyclones that form in the Atlantic interact with the relatively warm western boundary current known as the Gulf Stream. Surface currents in the Gulf Stream are much faster than the surrounding ocean. Previous studies have shown that including ocean currents in the calculation of fluxes can cause latent and sensible heat flux to change. Ocean and atmospheric reanalysis of extratropical cyclones from 1994-2015 are used to study the impacts that surface ocean currents can have on the latent and sensible heat fluxes generated by extratropical cyclones. Fluxes are calculated using a method developed by Kara et al. (2000) and the effect of the current is represented by replacing the 10m windspeed used in the calculation with the magnitude of the vector difference between the windspeed and the current speed: i.e., using surface relative winds rather than Earth relative winds. Changes are widely variable but typical changes are 10-30 Wm-1 for both sensible and latent heat flux. The largest changes in flux occurred in areas of highest current, but that change is dependent on other factors such as windspeed, air-sea temperature difference, and air-sea humidity difference. Currents can impact flux gradients depending on the locations of greatest changes. It was found that the impact of currents will result in decreased flux values in the cold sector of extratropical cyclones (the area where the greatest magnitudes of flux are produced). This study shows the importance of accurately representing the ocean in models of weather and climate. Shel McGuire Florida State University Academic Program Specialist Department of Earth, Ocean, & Atmospheric Science 1011 Academic Way, 2019 EOA Building Tallahassee, FL 32306 850-644-8582 To make an appointment please login to my.fsu.edu and choose the Campus Connect (CC) icon -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Mon Nov 16 12:20:34 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 16 Nov 2020 17:20:34 +0000 Subject: [Eoas-seminar] MET seminar series, Thursday, Nov. 19, 2020 by Eric Winsberg Message-ID: Hi all, This coming Thursday, Prof. Eric Winsberg of the University of South Florida will be the speaker of MET seminar series. The title, abstract and Zoom link of this talk are as following: Title: Why study solar radiation management? A case study in the cost of acquiring new evidence Abstract: Recently, research into the possibilities of developing SRM and other geoengineering technologies has gained new momentum. Just this year, Cambridge University announced the opening of a ?Centre for Climate Repair? as part of the university?s Carbon Neutral Futures Initiative. A recent paper published in Nature gives hope that SRM could confer more benefits than previously thought. But opposition to even conducting research into SRM remains strong. I use the case study of SRM to develop a framework for thinking about the benefits and costs of acquiring new evidence and for thinking about the conditions under which new evidence could be harmful. Zoom Link: https://fsu.zoom.us/j/93245899857?pwd=QytBQS9yb1RpbGJEb0cyUGMwOTlQUT09 More detailed Zoom information is also appended. Best, Zhaohua =============================================================== Zhaohua Wu is inviting you to a scheduled Zoom meeting. Topic: Eric Winsberg's Seminar Time: Nov 19, 2020 03:00 PM Eastern Time (US and Canada) Join Zoom Meeting https://fsu.zoom.us/j/93245899857?pwd=QytBQS9yb1RpbGJEb0cyUGMwOTlQUT09 Meeting ID: 932 4589 9857 Passcode: 605118 One tap mobile +13017158592,,93245899857# US (Washington D.C) +16465588656,,93245899857# US (New York) Dial by your location +1 301 715 8592 US (Washington D.C) +1 646 558 8656 US (New York) +1 312 626 6799 US (Chicago) +1 253 215 8782 US (Tacoma) +1 346 248 7799 US (Houston) +1 669 900 9128 US (San Jose) Meeting ID: 932 4589 9857 Find your local number: https://fsu.zoom.us/u/adiUmAZbXp Join by SIP 93245899857 at zoomcrc.com Join by H.323 162.255.37.11 (US West) 162.255.36.11 (US East) 115.114.131.7 (India Mumbai) 115.114.115.7 (India Hyderabad) 213.19.144.110 (Amsterdam Netherlands) 213.244.140.110 (Germany) 103.122.166.55 (Australia) 149.137.40.110 (Singapore) 64.211.144.160 (Brazil) 69.174.57.160 (Canada) 207.226.132.110 (Japan) Meeting ID: 932 4589 9857 Passcode: 605118 -------------- next part -------------- An HTML attachment was scrubbed... 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Name: MET_Seminar_Flyer_Winsberg.pdf Type: application/pdf Size: 965741 bytes Desc: MET_Seminar_Flyer_Winsberg.pdf URL: From eoas-seminar at lists.fsu.edu Tue Nov 17 11:14:24 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 17 Nov 2020 16:14:24 +0000 Subject: [Eoas-seminar] Reminder: Geology Thesis Defense - Daniel Govert - Nov 18, 8:30am - Zoom Message-ID: Geology Thesis Defense - Daniel Govert - Nov 18, 8:30am Title: Investigating the role of marine redox conditions and orbital forcings in an early Silurian mass extinction (Ireviken Event): A deeper water perspective Major Professor: Seth Young Join Zoom Meeting https://fsu.zoom.us/j/98104102326 Meeting ID: 981 0410 2326 One tap mobile +13017158592,,98104102326# US (Germantown) +13126266799,,98104102326# US (Chicago) Dial by your location +1 301 715 8592 US (Germantown) +1 312 626 6799 US (Chicago) +1 646 558 8656 US (New York) +1 253 215 8782 US (Tacoma) +1 346 248 7799 US (Houston) +1 669 900 9128 US (San Jose) Meeting ID: 981 0410 2326 Find your local number: https://fsu.zoom.us/u/anGCsyVIw Join by SIP 98104102326 at zoomcrc.com Join by H.323 162.255.37.11 (US West) 162.255.36.11 (US East) 115.114.131.7 (India Mumbai) 115.114.115.7 (India Hyderabad) 213.19.144.110 (Amsterdam Netherlands) 213.244.140.110 (Germany) 103.122.166.55 (Australia) 149.137.40.110 (Singapore) 64.211.144.160 (Brazil) 69.174.57.160 (Canada) 207.226.132.110 (Japan) Meeting ID: 981 0410 2326 -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Tue Nov 17 16:19:22 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 17 Nov 2020 21:19:22 +0000 Subject: [Eoas-seminar] Three Minute Thesis Finalists - Kelly Graham and Yin Zhang Message-ID: Last chance to vote for our graduate student finalists in the Three Minute Thesis! Please share as anyone can vote! Best of luck Kelly and Yin! [cid:image001.jpg at 01D6BCFD.683C7A30] Join us in congratulating the 2020 Three Minute Thesis Finalists: Mark Duslak, Educational Leadership & Policy Studies Kelly Graham, Earth, Ocean & Atmospheric Science Matthew Martenson, Nutrition, Food, and Exercise Sciences Temidayo Abiola Oloye, Materials Science and Engineering Chris Omni, Art Education Annie Reynolds, Nursing Elham Shekari, Urban & Regional Planning Wen-Chi Shie, Public Administration & Policy Yin Zhang, Earth, Ocean & Atmospheric Science Vote for the People's Choice Award! Click Here to view Finalist Presentations (ctrl + click to open links) Select your favorite presentation and Vote Here. Voting closes on November 17th. Winners will be announced the week of November 23, 2020. -The Graduate School Shel McGuire Florida State University Academic Program Specialist Department of Earth, Ocean, & Atmospheric Science 1011 Academic Way, 2019 EOA Building Tallahassee, FL 32306 850-644-8582 To make an appointment please login to my.fsu.edu and choose the Campus Connect (CC) icon -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.jpg Type: image/jpeg Size: 26472 bytes Desc: image001.jpg URL: From eoas-seminar at lists.fsu.edu Wed Nov 18 06:10:54 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Wed, 18 Nov 2020 11:10:54 +0000 Subject: [Eoas-seminar] Friday Seminar Message-ID: Please join us Friday (11/20) at 3:30 on zoom for this week's EOAS Colloquium speaker: Dr. Paul Schroeder of the University of Georgia If you would like to meet with Paul please email Jeremy Owens (jdowens at fsu.edu) Join Zoom meeting: https://fsu.zoom.us/j/92748669753 Meeting ID: 927 4866 9753 Understanding rates of Critical Zone change on geologic and human time scales: Vantages of potassium and clay minerals The Calhoun Critical Zone observatory (CCZO) in SC provides valuable insight into the interactions between all biotic and abiotic components at the Earth's surface where rock meets life. Biotite [K(Mg,Fe)3AlSi3O10(OH)2] and phengite [K(Mg,Al,Fe)2(Al,Si)4O10(OH)2] from a deep core (0 to 20 meters) in the CCZO are thought to influence the cycling of potassium, a factor of plant nutrition at depth. As these micas weather and structural ferrous iron oxidizes, potassium is released in order to satisfy a layer charge balance. More intensely weathered biotite and phengites contain lower relative abundances of potassium due to higher levels of oxidation, where the 2:1 structure is maintained. As potassium content of weathered micas near the surface and 2:1 layers become less abundant, the 2:1 layers are restructured to 1:1 layers kaolinite [(Al2Si2)O5(OH)4]. Using an electron microprobe, sand-sized grains were analyzed for their elemental composition using energy dispersive spectroscopy (EDS). Whole grain mounts were also examined in optically. Notably, weathered grains displayed "frayed" ends when viewed perpendicular to the principle c-axis. Analysis of these weathered grain ends in comparison to less weathered centers of grains yielded less relative percentage of potassium on the ends. Near the surface, many more kaolinite grains were observed yet a continuous range of compositions between end member mica and kaolinite were found at all depths. Evidence for fixed potassium in biotite and phengite supports the notion that reservoirs are available to supply rooted zones as uplift and chemical erosion proceeds. Although the loss of potassium occurs, persistence of lower amounts of potassium in the near-surface clays suggest that the degraded micas can still serve as a stock for nutrient cycling. As subsurface conditions become reducing due to low oxygen supply during wet conditions, then the ferric iron in the 2:1 structure can be reduced, necessitating uptake of ions such as potassium and ammonium to compensate for layer charge changes. This implies that oscillating seasonal reducing and oxidizing cycles (fall/winter and spring/summer, respectively) create the potential for degraded biotite and phengite to act as refugia for nutrients in the subsurface CZ. -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: 2020-11-20-EOAS_Colloquium.pdf Type: application/pdf Size: 811361 bytes Desc: 2020-11-20-EOAS_Colloquium.pdf URL: From eoas-seminar at lists.fsu.edu Wed Nov 18 12:59:26 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Wed, 18 Nov 2020 17:59:26 +0000 Subject: [Eoas-seminar] Meteorology MS Defense for Gwen Dmitruk, Friday, November 20, 2020, 9:000 AM, on Zoom https://fsu.zoom.us/j/96603347130?pwd=eU5oRGZ6QXorUlkzNWFjbm9KZEo2UT09 Message-ID: Meteorology Seminar Gwendolyn Dmitruk M.S. Meteorology Candidate Title: A globe-circling synoptic-Scale winter disturbance In Northern hemisphere midlatitudes Major Professor: Dr. Jon Ahlquist Date: Friday, 20 November 2020 Time: 09:00 AM Location: Zoom Meeting (URL: https://fsu.zoom.us/j/96603347130?pwd=eU5oRGZ6QXorUlkzNWFjbm9KZEo2UT09) ABSTRACT This study examines the possibility that winter storms developing off the east coast of Asia may trigger storms developing off the east coast of North American and vice versa. We focus on one point off the northeastern coast of North America and another off the northeastern coast of Asia where relative vorticity and height fluctuations are large. The starting point was identifying the 100 most prominent vorticity maxima at 500 hPa at each of these points during sixty 150-day cold seasons beginning on 1 November of each year from 1958 to 2017. Global composites were computed across multiple pressure levels from these events, spanning 25 days before to 25 days after the time of a relative vorticity maximum. This allowed for observation of the disturbance from 1000 hPa to 1 hPa. At the time of the vorticity maxima, the composite shows an untilted feature about 5? of latitude (560 km) in diameter extending from 1000 hPa to 100 hPa, decaying rapidly above that. Composites confirmed the existence of the wave pattern, which travels eastward across the Atlantic with maintained strength after reaching a peak off the coast of Nova Scotia (at t = 0). It rapidly loses this strength and gains a notable southward component to its trajectory after reaching the European coastline but still visibly treks eastward across Asia in its weakened state. Upon reaching the Pacific (at 9-10 days), it surges in relative vorticity strength again. This strength is likewise maintained across the North Pacific, until it similarly and significantly weakens in strength and attains a southeastern trajectory upon contact with the North America, only to reemerge in a week's time to repeat the pattern once again at 19-20 days, increasing and maintaining strength along the North Atlantic. Similar results are repeated using height composites, with wave signal location, speed, and strength mirroring that of the relative vorticity composites. Case studies of individual events allow for the indexing and chronicling of the events life cycle. Shel McGuire Florida State University Academic Program Specialist Department of Earth, Ocean, & Atmospheric Science 1011 Academic Way, 2019 EOA Building Tallahassee, FL 32306 850-644-8582 To make an appointment please login to my.fsu.edu and choose the Campus Connect (CC) icon -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Thu Nov 19 09:57:39 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 19 Nov 2020 14:57:39 +0000 Subject: [Eoas-seminar] Seminar today at 3:30 PM Message-ID: Hi all, This is just a reminder that we have a seminar today in the MET seminar series. Prof. Eric Winsberg of the University of South Florida will be the speaker. The title, abstract and Zoom link of this talk are as following: Title: Why study solar radiation management? A case study in the cost of acquiring new evidence Abstract: Recently, research into the possibilities of developing SRM and other geoengineering technologies has gained new momentum. Just this year, Cambridge University announced the opening of a ?Centre for Climate Repair? as part of the university?s Carbon Neutral Futures Initiative. A recent paper published in Nature gives hope that SRM could confer more benefits than previously thought. But opposition to even conducting research into SRM remains strong. I use the case study of SRM to develop a framework for thinking about the benefits and costs of acquiring new evidence and for thinking about the conditions under which new evidence could be harmful. Zoom Link: https://fsu.zoom.us/j/93245899857?pwd=QytBQS9yb1RpbGJEb0cyUGMwOTlQUT09 More detailed Zoom information is also appended. Best, Zhaohua =============================================================== Zhaohua Wu is inviting you to a scheduled Zoom meeting. Topic: Eric Winsberg's Seminar Time: Nov 19, 2020 03:00 PM Eastern Time (US and Canada) Join Zoom Meeting https://fsu.zoom.us/j/93245899857?pwd=QytBQS9yb1RpbGJEb0cyUGMwOTlQUT09 Meeting ID: 932 4589 9857 Passcode: 605118 One tap mobile +13017158592,,93245899857# US (Washington D.C) +16465588656,,93245899857# US (New York) Dial by your location +1 301 715 8592 US (Washington D.C) +1 646 558 8656 US (New York) +1 312 626 6799 US (Chicago) +1 253 215 8782 US (Tacoma) +1 346 248 7799 US (Houston) +1 669 900 9128 US (San Jose) Meeting ID: 932 4589 9857 Find your local number: https://fsu.zoom.us/u/adiUmAZbXp Join by SIP 93245899857 at zoomcrc.com Join by H.323 162.255.37.11 (US West) 162.255.36.11 (US East) 115.114.131.7 (India Mumbai) 115.114.115.7 (India Hyderabad) 213.19.144.110 (Amsterdam Netherlands) 213.244.140.110 (Germany) 103.122.166.55 (Australia) 149.137.40.110 (Singapore) 64.211.144.160 (Brazil) 69.174.57.160 (Canada) 207.226.132.110 (Japan) Meeting ID: 932 4589 9857 Passcode: 605118 -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: MET_Seminar_Flyer_Winsberg.pdf Type: application/pdf Size: 966060 bytes Desc: MET_Seminar_Flyer_Winsberg.pdf URL: From eoas-seminar at lists.fsu.edu Fri Nov 20 08:52:00 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 20 Nov 2020 13:52:00 +0000 Subject: [Eoas-seminar] Meteorology MS Defense for Gwen Dmitruk, Friday, November 20, 2020, 9:000 AM, on Zoom https://fsu.zoom.us/j/96603347130?pwd=eU5oRGZ6QXorUlkzNWFjbm9KZEo2UT09 Message-ID: Meteorology Seminar Gwendolyn Dmitruk M.S. Meteorology Candidate Title: A globe-circling synoptic-Scale winter disturbance In Northern hemisphere midlatitudes Major Professor: Dr. Jon Ahlquist Date: Friday, 20 November 2020 Time: 09:00 AM Location: Zoom Meeting (URL: https://fsu.zoom.us/j/96603347130?pwd=eU5oRGZ6QXorUlkzNWFjbm9KZEo2UT09) ABSTRACT This study examines the possibility that winter storms developing off the east coast of Asia may trigger storms developing off the east coast of North American and vice versa. We focus on one point off the northeastern coast of North America and another off the northeastern coast of Asia where relative vorticity and height fluctuations are large. The starting point was identifying the 100 most prominent vorticity maxima at 500 hPa at each of these points during sixty 150-day cold seasons beginning on 1 November of each year from 1958 to 2017. Global composites were computed across multiple pressure levels from these events, spanning 25 days before to 25 days after the time of a relative vorticity maximum. This allowed for observation of the disturbance from 1000 hPa to 1 hPa. At the time of the vorticity maxima, the composite shows an untilted feature about 5? of latitude (560 km) in diameter extending from 1000 hPa to 100 hPa, decaying rapidly above that. Composites confirmed the existence of the wave pattern, which travels eastward across the Atlantic with maintained strength after reaching a peak off the coast of Nova Scotia (at t = 0). It rapidly loses this strength and gains a notable southward component to its trajectory after reaching the European coastline but still visibly treks eastward across Asia in its weakened state. Upon reaching the Pacific (at 9-10 days), it surges in relative vorticity strength again. This strength is likewise maintained across the North Pacific, until it similarly and significantly weakens in strength and attains a southeastern trajectory upon contact with the North America, only to reemerge in a week's time to repeat the pattern once again at 19-20 days, increasing and maintaining strength along the North Atlantic. Similar results are repeated using height composites, with wave signal location, speed, and strength mirroring that of the relative vorticity composites. Case studies of individual events allow for the indexing and chronicling of the events life cycle. Shel McGuire Florida State University Academic Program Specialist Department of Earth, Ocean, & Atmospheric Science 1011 Academic Way, 2019 EOA Building Tallahassee, FL 32306 850-644-8582 To make an appointment please login to my.fsu.edu and choose the Campus Connect (CC) icon -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Fri Nov 20 10:24:30 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 20 Nov 2020 15:24:30 +0000 Subject: [Eoas-seminar] Reminder TODAY - Fwd: Friday Seminar In-Reply-To: References: Message-ID: Please join us TODAY (11/20) at 3:30 on zoom for this week's EOAS Colloquium speaker: Dr. Paul Schroeder of the University of Georgia If you would like to meet with Paul please email Jeremy Owens (jdowens at fsu.edu) Join Zoom meeting: https://fsu.zoom.us/j/92748669753 Meeting ID: 927 4866 9753 Understanding rates of Critical Zone change on geologic and human time scales: Vantages of potassium and clay minerals The Calhoun Critical Zone observatory (CCZO) in SC provides valuable insight into the interactions between all biotic and abiotic components at the Earth?s surface where rock meets life. Biotite [K(Mg,Fe)3AlSi3O10(OH)2] and phengite [K(Mg,Al,Fe)2(Al,Si)4O10(OH)2] from a deep core (0 to 20 meters) in the CCZO are thought to influence the cycling of potassium, a factor of plant nutrition at depth. As these micas weather and structural ferrous iron oxidizes, potassium is released in order to satisfy a layer charge balance. More intensely weathered biotite and phengites contain lower relative abundances of potassium due to higher levels of oxidation, where the 2:1 structure is maintained. As potassium content of weathered micas near the surface and 2:1 layers become less abundant, the 2:1 layers are restructured to 1:1 layers kaolinite [(Al2Si2)O5(OH)4]. Using an electron microprobe, sand-sized grains were analyzed for their elemental composition using energy dispersive spectroscopy (EDS). Whole grain mounts were also examined in optically. Notably, weathered grains displayed ?frayed? ends when viewed perpendicular to the principle c-axis. Analysis of these weathered grain ends in comparison to less weathered centers of grains yielded less relative percentage of potassium on the ends. Near the surface, many more kaolinite grains were observed yet a continuous range of compositions between end member mica and kaolinite were found at all depths. Evidence for fixed potassium in biotite and phengite supports the notion that reservoirs are available to supply rooted zones as uplift and chemical erosion proceeds. Although the loss of potassium occurs, persistence of lower amounts of potassium in the near-surface clays suggest that the degraded micas can still serve as a stock for nutrient cycling. As subsurface conditions become reducing due to low oxygen supply during wet conditions, then the ferric iron in the 2:1 structure can be reduced, necessitating uptake of ions such as potassium and ammonium to compensate for layer charge changes. This implies that oscillating seasonal reducing and oxidizing cycles (fall/winter and spring/summer, respectively) create the potential for degraded biotite and phengite to act as refugia for nutrients in the subsurface CZ. -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: 2020-11-20-EOAS_Colloquium.pdf Type: application/pdf Size: 811361 bytes Desc: 2020-11-20-EOAS_Colloquium.pdf URL: -------------- next part -------------- _______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar From eoas-seminar at lists.fsu.edu Fri Nov 20 11:07:32 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 20 Nov 2020 16:07:32 +0000 Subject: [Eoas-seminar] EOAS Diversity, Equity, and Inclusion Meeting Message-ID: Dear All, The next meeting of the EOAS Diversity, Equity, and Inclusion Meeting will be on Weds, Dec. 16th at 3 pm: https://fsu.zoom.us/j/98022449782 All are welcome to attend. Sincerely, Angie Knapp -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Mon Nov 23 12:21:51 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 23 Nov 2020 17:21:51 +0000 Subject: [Eoas-seminar] No EOAS Colloq this week Message-ID: There will be no Colloquium this week due to the holiday.? Our Spring EOAS Colloquium series will begin in Jan.? We still have open speaker slots!? Please send suggestions :) Have a Happy Thanksgiving From eoas-seminar at lists.fsu.edu Mon Nov 23 12:49:37 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 23 Nov 2020 17:49:37 +0000 Subject: [Eoas-seminar] Meteorology MS Defense for Darin Mister, Monday, November 30, 2020, 2:30 PM on Zoom https://fsu.zoom.us/j/95353655684 Message-ID: Meteorology Seminar Darin Mister M.S. Meteorology Candidate TITLE: THE IMPACT OF SURFACE OCEAN CURRENTS ON TURBULENT HEAT FLUXES GENERATED BY ATLANTIC EXTRATROPICAL CYCLONES Major Professor: Dr. Mark Bourassa Date: Monday, November 30th, 2020 Time: 2:30 PM Location: Zoom meeting https://fsu.zoom.us/j/95353655684 ABSTRACT Extratropical cyclones are responsible for the generation of large amounts of latent and sensible heat fluxes over the ocean. These fluxes are the main mechanism by which the ocean influences the atmosphere. Extratropical cyclones that form in the Atlantic interact with the relatively warm western boundary current known as the Gulf Stream. Surface currents in the Gulf Stream are much faster than the surrounding ocean. Previous studies have shown that including ocean currents in the calculation of fluxes can cause latent and sensible heat flux to change. Ocean and atmospheric reanalysis of extratropical cyclones from 1994-2015 are used to study the impacts that surface ocean currents can have on the latent and sensible heat fluxes generated by extratropical cyclones. Fluxes are calculated using a method developed by Kara et al. (2000) and the effect of the current is represented by replacing the 10m windspeed used in the calculation with the magnitude of the vector difference between the windspeed and the current speed: i.e., using surface relative winds rather than Earth relative winds. Changes are widely variable but typical changes are 10-30 Wm-1 for both sensible and latent heat flux. The largest changes in flux occurred in areas of highest current, but that change is dependent on other factors such as windspeed, air-sea temperature difference, and air-sea humidity difference. Currents can impact flux gradients depending on the locations of greatest changes. It was found that the impact of currents will result in decreased flux values in the cold sector of extratropical cyclones (the area where the greatest magnitudes of flux are produced). This study shows the importance of accurately representing the ocean in models of weather and climate. Shel McGuire Florida State University Academic Program Specialist Department of Earth, Ocean, & Atmospheric Science 1011 Academic Way, 2019 EOA Building Tallahassee, FL 32306 850-644-8582 To make an appointment please login to my.fsu.edu and choose the Campus Connect (CC) icon -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Tue Nov 24 08:56:14 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 24 Nov 2020 13:56:14 +0000 Subject: [Eoas-seminar] Meteorology PhD Defense for Allison Brannan, Thursday, December 10, 2020, 2:00 PM on zoom https://fsu.zoom.us/j/96174470780 Message-ID: Meteorology Seminar Allie Brannan PhD Meteorology Candidate Title: An Analysis of the Extratropical Flow Response to Recurving Atlantic Tropical Cyclones Co-Major Professors: Dr. Jeffrey Chagnon & Dr. Robert Hart Date: December 10th, 2020 Time: 2:00 PM Location: Zoom Meeting: https://fsu.zoom.us/j/96174470780 ABSTRACT Previous case studies have noted a significant extratropical flow response to recurving Atlantic tropical cyclones (TCs), which is often linked to extreme weather events downstream. This study examines the modification of Rossby waves on the extratropical jet in response to recurving Atlantic TCs from both climatological and predictability perspectives. Changes in amplitude and location of Rossby waves are identified using a wavelet decomposition technique on isentropic potential vorticity. The climatology demonstrates that recurving Atlantic TC events are capable of modifying the amplitude of the extratropical flow. The nature of the extratropical flow response is most strongly tied to the average translation speed of the TC relative to the Rossby wave over the 72 hours following recurvature. The ability of Atlantic recurving TCs to significantly modify the amplitude of downstream Rossby waves motivates the investigation into whether the predictability of the extratropical flow is also affected by the TC and its Rossby wave relative speed. Predictability is evaluated as the standard deviation of isentropic potential vorticity among a 50-member ensemble and is compared to climatology. This study found subsets of recurvature cases that contain areas of significantly modified ensemble spread which were anchored in time and space to the recurvature of the TC. It is shown that forecast uncertainty is dependent upon the location of the nearest trough at the time of recurvature and the relative speed between the TC and the Rossby wave train after recurvature. Predictability is significantly degraded when recurvature occurs downstream of a trough; the elevated uncertainty subsequently propagates downstream along with the trough axis. An analysis in spectral space demonstrates that the increase in uncertainty is not solely attributed to the trough location, as there is also significantly elevated uncertainty in the Rossby wave amplitude across downstream troughs and ridges. Uncertainty is enhanced in locations where baroclinic growth processes are most pronounced, specifically where the TC and upper-level trough are optimally phased. Shel McGuire Florida State University Academic Program Specialist Department of Earth, Ocean, & Atmospheric Science 1011 Academic Way, 2019 EOA Building Tallahassee, FL 32306 850-644-8582 To make an appointment please login to my.fsu.edu and choose the Campus Connect (CC) icon -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Sun Nov 29 09:00:04 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Sun, 29 Nov 2020 14:00:04 +0000 Subject: [Eoas-seminar] Honors in the Major Thesis Defense: Jane Wadhams Message-ID: Geology Thesis Defense - Jane Wadhams - Nov 30, 1:00 pm Title: Novel Global Perspectives on Redox Conditions During the Paleocene-Eocene Thermal Maximum Major Professor: Jeremy Owens Topic: Wadhams Honors Thesis Time: Nov 30, 2020 01:00 PM Eastern Time (US and Canada) Join Zoom Meeting https://fsu.zoom.us/j/99961386693 Meeting ID: 999 6138 6693 One tap mobile +13017158592,,99961386693# US (Washington D.C) +13126266799,,99961386693# US (Chicago) Dial by your location +1 301 715 8592 US (Washington D.C) +1 312 626 6799 US (Chicago) +1 646 558 8656 US (New York) +1 253 215 8782 US (Tacoma) +1 346 248 7799 US (Houston) +1 669 900 9128 US (San Jose) Meeting ID: 999 6138 6693 Find your local number: https://fsu.zoom.us/u/abUfDY9GCg Join by SIP 99961386693 at zoomcrc.com Join by H.323 162.255.37.11 (US West) 162.255.36.11 (US East) 115.114.131.7 (India Mumbai) 115.114.115.7 (India Hyderabad) 213.19.144.110 (Amsterdam Netherlands) 213.244.140.110 (Germany) 103.122.166.55 (Australia) 149.137.40.110 (Singapore) 64.211.144.160 (Brazil) 69.174.57.160 (Canada) 207.226.132.110 (Japan) Meeting ID: 999 6138 6693 -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Mon Nov 30 10:19:41 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 30 Nov 2020 15:19:41 +0000 Subject: [Eoas-seminar] Meteorology MS Defense for Darin Mister, Monday, November 30, 2020, 2:30 PM on Zoom https://fsu.zoom.us/j/95353655684 Message-ID: Meteorology Seminar Darin Mister M.S. Meteorology Candidate TITLE: THE IMPACT OF SURFACE OCEAN CURRENTS ON TURBULENT HEAT FLUXES GENERATED BY ATLANTIC EXTRATROPICAL CYCLONES Major Professor: Dr. Mark Bourassa Date: Monday, November 30th, 2020 Time: 2:30 PM Location: Zoom meeting https://fsu.zoom.us/j/95353655684 ABSTRACT Extratropical cyclones are responsible for the generation of large amounts of latent and sensible heat fluxes over the ocean. These fluxes are the main mechanism by which the ocean influences the atmosphere. Extratropical cyclones that form in the Atlantic interact with the relatively warm western boundary current known as the Gulf Stream. Surface currents in the Gulf Stream are much faster than the surrounding ocean. Previous studies have shown that including ocean currents in the calculation of fluxes can cause latent and sensible heat flux to change. Ocean and atmospheric reanalysis of extratropical cyclones from 1994-2015 are used to study the impacts that surface ocean currents can have on the latent and sensible heat fluxes generated by extratropical cyclones. Fluxes are calculated using a method developed by Kara et al. (2000) and the effect of the current is represented by replacing the 10m windspeed used in the calculation with the magnitude of the vector difference between the windspeed and the current speed: i.e., using surface relative winds rather than Earth relative winds. Changes are widely variable but typical changes are 10-30 Wm-1 for both sensible and latent heat flux. The largest changes in flux occurred in areas of highest current, but that change is dependent on other factors such as windspeed, air-sea temperature difference, and air-sea humidity difference. Currents can impact flux gradients depending on the locations of greatest changes. It was found that the impact of currents will result in decreased flux values in the cold sector of extratropical cyclones (the area where the greatest magnitudes of flux are produced). This study shows the importance of accurately representing the ocean in models of weather and climate. Shel McGuire Florida State University Academic Program Specialist Department of Earth, Ocean, & Atmospheric Science 1011 Academic Way, 2019 EOA Building Tallahassee, FL 32306 850-644-8582 To make an appointment please login to my.fsu.edu and choose the Campus Connect (CC) icon -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Mon Nov 30 11:40:41 2020 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 30 Nov 2020 16:40:41 +0000 Subject: [Eoas-seminar] MET seminar series by Dr. Truchelut on Thursday, Dec. 3, 2020, at 3:30 PM Message-ID: Dear colleagues, Here we announce that Dr. Ryan Truchelut, an alumnus (PhD '15) of FSU meteorological program, will be the speaker of this week's MET seminar. The title, abstract, and Zoom link are as the following: Title: From the "Weather Guy" to WeatherTiger: Explorations in Scientific Entrepreneurship Abstract: Career decisions in meteorology often are perceived along lines of binary choice. Academia or forecasting? Research or teaching? Public or private sector? And yet, more options than these exist for those who take a "Choose Your Own Adventure" approach to the weather profession. FSU meteorology alumni Dr. Ryan Truchelut (PhD '15) will discuss the path in scientific entrepreneurship that he has followed in co-founding WeatherTiger, a weather and climate consulting company, in a talk that like the start-up life itself, is a mix of research, operations, finance, cat herding, memoirs, and attempted dad humor. The Zoom link: https://fsu.zoom.us/j/95792371181?pwd=QzFLQWZjOXozSXFtZlNnQThmbkNVQT09. A flyer of his talk is also attached. Best, Zhaohua -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: MET_Seminar_Flyer_Truchelut.pdf Type: application/pdf Size: 955547 bytes Desc: MET_Seminar_Flyer_Truchelut.pdf URL: