From eoas-seminar at lists.fsu.edu  Mon Mar  1 07:32:36 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Mon, 1 Mar 2021 12:32:36 +0000
Subject: [Eoas-seminar] Geophysics Job Talk Today @ 3:30 PM
Message-ID: <mailman.4203.1614601960.2937.eoas-seminar@lists.fsu.edu>

Neala Creasy is candidate for the faculty search in "Geophysics?.

Zoom link for the talk: https://fsu.zoom.us/j/93286142639

Date and Time: March 1st 3:30 PM

Title: Deep Earth Seismology: Revealing the Birth of Plumes and the Death of Plates
Abstract:  Plate tectonics represents the surface expression of Earth?s convecting mantle, resulting from the continued cooling of the planet. Solid-state mantle convection drives subducting plates/slabs into the deep mantle, while driving plumes up to the surface as hotspot volcanism. Earthquake seismology has the power to image the interior of the planet to better understand these processes. While general seismic imaging (such as tomography or waveform modelling) can reveal the locations, properties, and dimensions of deep mantle objects (plumes, slabs, etc.), it cannot reveal the context of these features in relation to mantle flow. Therefore, the main way to characterize mantle flow is with seismic anisotropy (how seismic wave speeds change with direction). In this seminar, I illustrate the links that I have made between seismic observations, mineral physics experiments, and dynamics with an emphasis on the lowermost mantle (the D? region: 200-300 km thick region directly above the core mantle boundary). Based on recent modeling of anisotropy, we have been able to better constrain likely mechanisms for D?-anisotropy and possible directions of flow. However, these models are based on ray theory, an infinite frequency approximation to the wave equation. In my current research, I am exploring the limits of ray theory as applied to seismic anisotropy and imaging in general. I use 3D numerical modeling of the wave equation to explore finite frequency effects on seismic observations, such as anisotropy. In the future, I would like to better understand features in the deep mantle and core by the following: (1) expanding the number of observations of seismic heterogeneities and anisotropy in the deep Earth; (2) using full-waveform modeling to better constrain the mechanism of anisotropy in the D? layer; (3) better image and model the Earth?s outer core; and (4) work towards global full waveform inversion of shear wave splitting.

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From eoas-seminar at lists.fsu.edu  Mon Mar  1 15:27:41 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Mon, 1 Mar 2021 20:27:41 +0000
Subject: [Eoas-seminar] Geophysics Job Talk Today @ 3:30 PM
In-Reply-To: <mailman.4203.1614601960.2937.eoas-seminar@lists.fsu.edu>
References: <mailman.4203.1614601960.2937.eoas-seminar@lists.fsu.edu>
Message-ID: <mailman.4730.1614630462.2937.eoas-seminar@lists.fsu.edu>

Please join us for Geophysics Job Talk Seminar
Details are included below.

On Mar 1, 2021, at 7:32 AM, eoas-seminar--- via Eoas-seminar <eoas-seminar at lists.fsu.edu<mailto:eoas-seminar at lists.fsu.edu>> wrote:

Neala Creasy is candidate for the faculty search in "Geophysics?.

Zoom link for the talk: https://fsu.zoom.us/j/93286142639

Date and Time: March 1st 3:30 PM

Title: Deep Earth Seismology: Revealing the Birth of Plumes and the Death of Plates
Abstract:  Plate tectonics represents the surface expression of Earth?s convecting mantle, resulting from the continued cooling of the planet. Solid-state mantle convection drives subducting plates/slabs into the deep mantle, while driving plumes up to the surface as hotspot volcanism. Earthquake seismology has the power to image the interior of the planet to better understand these processes. While general seismic imaging (such as tomography or waveform modelling) can reveal the locations, properties, and dimensions of deep mantle objects (plumes, slabs, etc.), it cannot reveal the context of these features in relation to mantle flow. Therefore, the main way to characterize mantle flow is with seismic anisotropy (how seismic wave speeds change with direction). In this seminar, I illustrate the links that I have made between seismic observations, mineral physics experiments, and dynamics with an emphasis on the lowermost mantle (the D? region: 200-300 km thick region directly above the core mantle boundary). Based on recent modeling of anisotropy, we have been able to better constrain likely mechanisms for D?-anisotropy and possible directions of flow. However, these models are based on ray theory, an infinite frequency approximation to the wave equation. In my current research, I am exploring the limits of ray theory as applied to seismic anisotropy and imaging in general. I use 3D numerical modeling of the wave equation to explore finite frequency effects on seismic observations, such as anisotropy. In the future, I would like to better understand features in the deep mantle and core by the following: (1) expanding the number of observations of seismic heterogeneities and anisotropy in the deep Earth; (2) using full-waveform modeling to better constrain the mechanism of anisotropy in the D? layer; (3) better image and model the Earth?s outer core; and (4) work towards global full waveform inversion of shear wave splitting.

<Neala_Creasy-EOASColloquium.pdf>_______________________________________________
Eoas-seminar mailing list
Eoas-seminar at lists.fsu.edu<mailto:Eoas-seminar at lists.fsu.edu>
https://lists.fsu.edu/mailman/listinfo/eoas-seminar

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From eoas-seminar at lists.fsu.edu  Tue Mar  2 08:49:38 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Tue, 2 Mar 2021 13:49:38 +0000
Subject: [Eoas-seminar] Meteorology MS Defense for Carly Narotsky, Tuesday,
 March 16, 2021, 3:30 PM on zoom https://fsu.zoom.us/j/99446911494
Message-ID: <mailman.4921.1614692982.2937.eoas-seminar@lists.fsu.edu>

Meteorology Seminar

Carly Narotsky

M.S. Meteorology Candidate



Title:  Predictability of the peninsular florida wet season

Major Professor:  Dr. Vasu Misra

Date: March 16th, 2021                          Time: 3:30 PM



Location: Zoom Meeting (URL: https://fsu.zoom.us/j/99446911494)

ABSTRACT

Late spring or early summer brings an abrupt onset of a wet season to Peninsular Florida (PF). PF experiences high daily rain rates throughout the summer until the demise of the wet season in autumn. Prediction of the Peninsular Florida Wet Season (PFWS) is important for Florida's agriculture industry, wildfire management, and water resource management. The onset and demise of the PFWS coincide with seasonal changes in the nearby ocean and atmospheric circulations, including the seasonal migration of the North Atlantic subtropical high (NASH). Yet, predictability of summer season precipitation in PF remains low compared to that of the winter season, which has a teleconnection with ENSO. This paper includes a skill assessment of the Community Climate System Model, version 4 (CCSM4) in predicting 1983-2015 summer season precipitation in PF, as well as the dates of onset and demise of the PFWS, using metrics of deterministic and probabilistic skill at hindcast lead times of 0-11 months. In the deterministic skill perspective, CCSM4 shows low skill in predicting the summer season precipitation and the dates of onset and demise of the PFWS, with high error values, low correlation, and high ensemble spread. CCSM4 has a late bias in predicting the onset and demise dates of the PFWS, and the late bias of the onset dates increases with hindcast lead time. For the probabilistic skill assessment, Relative Operating characteristic Curves (ROCs) are employed. The ROC scores indicate that CCSM4 may be skillful in predicting early onsets and late demises of the PFWS at some lead times but show no skill in predicting late onsets or early demises of the PFWS. Hindcasts of total seasonal rainfall amounts are generally unskillful, regardless of how the season is defined. Motivated by the role of the seasonal migration of the NASH in the timing of the onset of the PFWS and the finding of a late bias in the prediction of the onset of the PFWS, this paper also includes an analysis of CCSM4's ability to resolve the position and strength of the NASH at the time of the onset of the PFWS. CCSM4 strongly underestimates the observed interannual variability in the westward extent of the NASH at the time of the onset of the PFWS. This failure to resolve the position of the NASH at the time of the onset of the PFWS may be a contributing reason for the low predictability of the onset of the PFWS by CCSM4.



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

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From eoas-seminar at lists.fsu.edu  Tue Mar  2 10:41:10 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Tue, 2 Mar 2021 15:41:10 +0000
Subject: [Eoas-seminar] Geophysics Job Talk Wednesday, March 3rd@ 3:30 PM
Message-ID: <mailman.5011.1614699673.2937.eoas-seminar@lists.fsu.edu>

Dear all,

Johnny Seales is a candidate for the faculty search in Geophysics. His virtual visit dates are March 3rd-4th.

Zoom link for the talk: https://fsu.zoom.us/j/99846006873
Date and Time: March 3rd 3:30 PM

Title: Deep Volatile Cycles and the Thermal History of the Earth
Abstract: Volatile cycles play a key role in sustaining habitable surface conditions for the Earth. The cycling of volatiles between surface and interior reservoirs depends on the Earth?s internal dynamics. Volcanism transfers volatiles from the Earth?s interior to its surface, while subduction cycles volatiles into the interior. Here I will demonstrate the influence of the deep water and carbon cycles on the Earth system. The balance of water in the mantle affects mantle viscosity, which, in turn, influences convection and plate tectonics. Age dated rock samples suggest that Earth had a multi-staged cooling history. I will show that the first stage of less efficient mantle cooling is attributable to the effects of water cycling on mantle viscosity. A change from net mantle dewatering to rewatering is predicted to occur at approximately 2.5 billion years ago. This alters the relative influence of thermal to water cycling and leads to more rapid cooling. This timing coincides with the Great Oxidation Event which can also be connected to the coupling between volatile cycling and mantle dynamics. I will show that an increase in the flux of carbonates and organics, to different mantle depths, and delivery back to the surface can explain the rise of oxygen and the most positive d13C carbonate excursion in the Earth?s history. A final aspect I will explore is the role of deep volatile cycling on maintaining surface temperatures that allow for liquid water. We know that our own planet has had water at the surface for billions of years. Accounting for carbon and water cycling, I will show that terrestrial planets, akin to Earth, may have first had surface temperatures warm enough for liquid water over a time window that spans billions of years. This last analysis will show that Earth may fall in the tail of a galactic distribution of planets that allow for surface water over their evolutions.
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From eoas-seminar at lists.fsu.edu  Wed Mar  3 07:14:33 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Wed, 3 Mar 2021 12:14:33 +0000
Subject: [Eoas-seminar] Geophysics Job Talk Today at 3:30 PM
Message-ID: <mailman.5434.1614773677.2937.eoas-seminar@lists.fsu.edu>

Dear all,

Gentle reminder, Geophysics Job talk by Johnny Seales @ 3:30 PM today
Zoom link for the talk: https://fsu.zoom.us/j/99846006873


Title: Deep Volatile Cycles and the Thermal History of the Earth
Abstract: Volatile cycles play a key role in sustaining habitable surface conditions for the Earth. The cycling of volatiles between surface and interior reservoirs depends on the Earth?s internal dynamics. Volcanism transfers volatiles from the Earth?s interior to its surface, while subduction cycles volatiles into the interior. Here I will demonstrate the influence of the deep water and carbon cycles on the Earth system. The balance of water in the mantle affects mantle viscosity, which, in turn, influences convection and plate tectonics. Age dated rock samples suggest that Earth had a multi-staged cooling history. I will show that the first stage of less efficient mantle cooling is attributable to the effects of water cycling on mantle viscosity. A change from net mantle dewatering to rewatering is predicted to occur at approximately 2.5 billion years ago. This alters the relative influence of thermal to water cycling and leads to more rapid cooling. This timing coincides with the Great Oxidation Event which can also be connected to the coupling between volatile cycling and mantle dynamics. I will show that an increase in the flux of carbonates and organics, to different mantle depths, and delivery back to the surface can explain the rise of oxygen and the most positive d13C carbonate excursion in the Earth?s history. A final aspect I will explore is the role of deep volatile cycling on maintaining surface temperatures that allow for liquid water. We know that our own planet has had water at the surface for billions of years. Accounting for carbon and water cycling, I will show that terrestrial planets, akin to Earth, may have first had surface temperatures warm enough for liquid water over a time window that spans billions of years. This last analysis will show that Earth may fall in the tail of a galactic distribution of planets that allow for surface water over their evolutions.
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From eoas-seminar at lists.fsu.edu  Wed Mar  3 15:15:37 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Wed, 3 Mar 2021 20:15:37 +0000
Subject: [Eoas-seminar] Geophysics Job Talk Today at 3:30 PM
In-Reply-To: <mailman.5434.1614773677.2937.eoas-seminar@lists.fsu.edu>
References: <mailman.5434.1614773677.2937.eoas-seminar@lists.fsu.edu>
Message-ID: <mailman.5706.1614802545.2937.eoas-seminar@lists.fsu.edu>

Please attend

Geophysics Job talk by Johnny Seales @ 3:30 PM
Zoom link for the talk: https://fsu.zoom.us/j/99846006873

Title: Deep Volatile Cycles and the Thermal History of the Earth
Abstract: Volatile cycles play a key role in sustaining habitable surface conditions for the Earth. The cycling of volatiles between surface and interior reservoirs depends on the Earth?s internal dynamics. Volcanism transfers volatiles from the Earth?s interior to its surface, while subduction cycles volatiles into the interior. Here I will demonstrate the influence of the deep water and carbon cycles on the Earth system. The balance of water in the mantle affects mantle viscosity, which, in turn, influences convection and plate tectonics. Age dated rock samples suggest that Earth had a multi-staged cooling history. I will show that the first stage of less efficient mantle cooling is attributable to the effects of water cycling on mantle viscosity. A change from net mantle dewatering to rewatering is predicted to occur at approximately 2.5 billion years ago. This alters the relative influence of thermal to water cycling and leads to more rapid cooling. This timing coincides with the Great Oxidation Event which can also be connected to the coupling between volatile cycling and mantle dynamics. I will show that an increase in the flux of carbonates and organics, to different mantle depths, and delivery back to the surface can explain the rise of oxygen and the most positive d13C carbonate excursion in the Earth?s history. A final aspect I will explore is the role of deep volatile cycling on maintaining surface temperatures that allow for liquid water. We know that our own planet has had water at the surface for billions of years. Accounting for carbon and water cycling, I will show that terrestrial planets, akin to Earth, may have first had surface temperatures warm enough for liquid water over a time window that spans billions of years. This last analysis will show that Earth may fall in the tail of a galactic distribution of planets that allow for surface water over their evolutions.



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From eoas-seminar at lists.fsu.edu  Mon Mar  8 09:15:23 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Mon, 8 Mar 2021 14:15:23 +0000
Subject: [Eoas-seminar] MET Seminar on Thursday, Mar. 11 at 3:30 PM
Message-ID: <mailman.7417.1615212926.2937.eoas-seminar@lists.fsu.edu>

Hi all,

Here is an announcement that we have a MET seminar at 3:30 PM on Thursday, Mar. 11, 2021. The related information can be found in the following and the attached flyer.

Speaker: Dr. Cristi Proistosescu, Department of Atmospheric Sciences, University of Illinois

Title: Coupled climate models fail to simulate observed sea surface temperature patterns, weakening constraints on future warming

Abstract:  The pattern of changes in Sea Surface Temperatures (SSTs) over recent decades has been marked by enhanced warming in the western equatorial Pacific and cooling in the eastern Pacific and Southern Ocean. This pattern led to an acceleration of the Walker circulation, a strengthening of the trade inversion and an increase in low cloud cover in the East Pacific. Current state-of-the-art coupled atmosphere-ocean climate models fail to reproduce the observed SST pattern and attendant changes in atmospheric circulation and clouds. Due to this discrepancy in SST patterns, observations lie outside the coupled model ensemble across several key metrics ? critically among them the net radiative feedback. Our analysis shows that this discrepancy in SST patterns could account for the inability of high climate sensitivity CMIP6 coupled models to reproduce the overall magnitude of historical warming. If the bias is due to either a transient in the forced response or natural variability, then high long-term warming cannot be discounted based on recent warming trends. It remains an open question whether the problem in the coupled models lies with a bias in the forced response or insufficient natural variability.

Time: 3:30 PM, Thursday, Mar. 11, 2021

Zoom Link:  https://fsu.zoom.us/j/95514229100?pwd=ZWgxSnZYTEd2bGtONUtvRCtmZHpMZz09
Meeting ID: 955 1422 9100
Passcode: 157472
One tap mobile
+13126266799,,95514229100# US (Chicago)
+16465588656,,95514229100# US (New York)

It is noted that the pre-seminar session, "Meeting with the Speaker," will start at 3:00 PM with the same zoom link. A post-seminar student-speaker session will start immediately after the seminar. Look forward to seeing you then.

Cheers,

Zhaohua

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From eoas-seminar at lists.fsu.edu  Tue Mar  9 08:27:57 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Tue, 9 Mar 2021 13:27:57 +0000
Subject: [Eoas-seminar] EOAS Colloquium Friday March 12th at 3:30PM
Message-ID: <mailman.8026.1615296480.2937.eoas-seminar@lists.fsu.edu>

Hi Everyone,

Please join us for this week's colloquium speaker which is part of the Distinguished Lectures Series by the International Ocean Discovery Program (IODP):
EOAS Seminar - Friday March 12th @ 3:30 pm

Speaker: Dr. Christopher Lowery, Research Associate, Jackson School of Geosciences, University of Texas, Austin

Website: https://www.jsg.utexas.edu/researcher/christopher_lowery/

Seminar Title: The Recovery of Life After the End Cretaceous Mass Extinction

Abstract: Without substantial changes in anthropogenic pressures, the current biodiversity crisis could very well rise to the level of a major mass extinction of the magnitude of the so-called "Big Five" mass extinctions of Earth history. These ancient events provide crucial insights into how ecosystems collapse and how they recover afterward; the most recent, the End Cretaceous mass extinction, is perhaps the only major event in the history of life which happened faster than modern climate change. This talk focuses on the recovery of life following the end Cretaceous mass extinction at a variety of scales, from the rapid return to a habitable environment (years to decades after the extinction), to the recovery of marine ecosystem function (within a few million years of the extinction), to finally the recovery of biodiversity (10 myr after the extinction). The timing of these different milestones of the overall recovery of life highlights the fact that humans have the potential to cause changes to the biosphere on geologic timescales and highlights the urgent need for conservation.

[image.png]

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From eoas-seminar at lists.fsu.edu  Tue Mar  9 08:32:56 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Tue, 9 Mar 2021 13:32:56 +0000
Subject: [Eoas-seminar] EOAS Colloquium Friday March 12th at 3:30PM
In-Reply-To: <mailman.8026.1615296480.2937.eoas-seminar@lists.fsu.edu>
References: <mailman.8026.1615296480.2937.eoas-seminar@lists.fsu.edu>
Message-ID: <mailman.8029.1615296782.2937.eoas-seminar@lists.fsu.edu>

Hi Everyone,

Please join us for this week's colloquium speaker which is part of the Distinguished Lectures Series by the International Ocean Discovery Program (IODP):
EOAS Seminar - Friday March 12th @ 3:30 pm

Full Zoom Meeting Info at the bottom of the email. https://fsu.zoom.us/j/93736317803

Speaker: Dr. Christopher Lowery, Research Associate, Jackson School of Geosciences, University of Texas, Austin

Website: https://www.jsg.utexas.edu/researcher/christopher_lowery/

Seminar Title: The Recovery of Life After the End Cretaceous Mass Extinction

Abstract: Without substantial changes in anthropogenic pressures, the current biodiversity crisis could very well rise to the level of a major mass extinction of the magnitude of the so-called "Big Five" mass extinctions of Earth history. These ancient events provide crucial insights into how ecosystems collapse and how they recover afterward; the most recent, the End Cretaceous mass extinction, is perhaps the only major event in the history of life which happened faster than modern climate change. This talk focuses on the recovery of life following the end Cretaceous mass extinction at a variety of scales, from the rapid return to a habitable environment (years to decades after the extinction), to the recovery of marine ecosystem function (within a few million years of the extinction), to finally the recovery of biodiversity (10 myr after the extinction). The timing of these different milestones of the overall recovery of life highlights the fact that humans have the potential to cause changes to the biosphere on geologic timescales and highlights the urgent need for conservation.

[image.png]

Jeremy Owens is inviting you to a scheduled Zoom meeting.

Topic: Lowery Seminar
Time: Mar 12, 2021 03:30 PM Eastern Time (US and Canada)

Join Zoom Meeting
https://fsu.zoom.us/j/93736317803

Meeting ID: 937 3631 7803
One tap mobile
+13126266799,,93736317803# US (Chicago)
+16465588656,,93736317803# US (New York)

Dial by your location
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        +1 301 715 8592 US (Washington DC)
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        +1 253 215 8782 US (Tacoma)
Meeting ID: 937 3631 7803
Find your local number: https://fsu.zoom.us/u/adDHsjGiaO

Join by SIP
93736317803 at zoomcrc.com

Join by H.323
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Meeting ID: 937 3631 7803

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From eoas-seminar at lists.fsu.edu  Tue Mar  9 08:36:16 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Tue, 9 Mar 2021 13:36:16 +0000
Subject: [Eoas-seminar] Meteorology MS Defense for Walker Whitfield, Thursday,
 March 18, 2021, 3:30 PM on zoom https://fsu.zoom.us/j/93595187379
Message-ID: <mailman.8034.1615296978.2937.eoas-seminar@lists.fsu.edu>

Meteorology Seminar

Walker Whitfield

M.S. Meteorology Candidate



Title:  ESTimating Return periods oF extreme tropical cyclone winds ACCounting for effective surface roughness at high resolution

Major Professor:  Dr. Mark Bourassa

Date: March 18th, 2021                           Time: 3:30 PM


Location: Zoom Meeting (URL: https://fsu.zoom.us/j/93595187379)


ABSTRACT


In the United States, tropical cyclones (TCs) were the leading cause of natural disaster-related fatalities and Consumer Price Index (CPI)-adjusted costs averaged over the years 1980-2017. Accurately assessing TC-induced extreme winds is crucial to proper risk management related to mitigation of these losses. Several studies attempt to calculate return periods (TRP), or the statistically estimated average time between events of a given magnitude, for extreme TC winds at point locations or along coastlines. This study seeks to further previous work by addressing concerns related to spatial and temporal resolutions, in addition to the consideration of TC winds as a function of surface roughness and fetch over land. We begin by analyzing HURDAT BestTrack Extended (1988-2017) data (EBTRK) at 0.25-degree (~27km) resolution, assigning a maximum observed windspeed value per grid cell per year, to which several extreme value distributions (EVDs) are fit to the probability distribution function (PDF). The Generalized Pareto Distribution (GPD) is found to have the best fit to the EBTRK data, where fitting parameters are calculated based on these observations using the method of moments. We find the EBTRK dataset, while more continuous and higher resolution than previous assessments, lacks sufficient observations for proper fit to an EVD and it appears to not fully consider the effect of surface roughness on TC wind speed. To address these issues, we use 59,000 years of modeled TC winds produced by the Florida Public Loss Hurricane Model (FPLHM), which considers the effects of effective surface roughness on upstream winds on a fine scale (~90m) at locations of interest roughly every kilometer. The study domain is narrowed down to the Tampa/Clearwater area of Florida for its various terrain and coastline features, from which six locations of varying terrain/coastline proximity are chosen. We reimplement the EVD fitting procedure to the FPLHM data, again finding the GPD to be the best fit, and extrapolating out TRP values for the most extreme TC winds at each location. Empirically calculated TRP values are also plotted for the entire domain to gain a sense of those associated patterns. We find TRP and subsequent expected winds can vary dramatically depending on effective surface roughness over distances at least as short as ~1km (the finest resolution of the modeled data), while distance inland independent of TC weakening plays a lesser of a role after the first few kilometers. The results indicate a need for more accurate future TRP analyses that are both at a fine scale and incorporate effective surface roughness, which also points to the weakness in using historical data in areas with recent changes in land use.


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

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From eoas-seminar at lists.fsu.edu  Tue Mar  9 08:36:18 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Tue, 9 Mar 2021 13:36:18 +0000
Subject: [Eoas-seminar] Meteorology MS Defense for Carly Narotsky, Tuesday,
 March 16, 2021, 3:30 PM on zoom https://fsu.zoom.us/j/99446911494
Message-ID: <mailman.8035.1615296980.2937.eoas-seminar@lists.fsu.edu>

Meteorology Seminar

Carly Narotsky

M.S. Meteorology Candidate



Title:  Predictability of the peninsular florida wet season

Major Professor:  Dr. Vasu Misra

Date: March 16th, 2021                          Time: 3:30 PM



Location: Zoom Meeting (URL: https://fsu.zoom.us/j/99446911494)

ABSTRACT

Late spring or early summer brings an abrupt onset of a wet season to Peninsular Florida (PF). PF experiences high daily rain rates throughout the summer until the demise of the wet season in autumn. Prediction of the Peninsular Florida Wet Season (PFWS) is important for Florida's agriculture industry, wildfire management, and water resource management. The onset and demise of the PFWS coincide with seasonal changes in the nearby ocean and atmospheric circulations, including the seasonal migration of the North Atlantic subtropical high (NASH). Yet, predictability of summer season precipitation in PF remains low compared to that of the winter season, which has a teleconnection with ENSO. This paper includes a skill assessment of the Community Climate System Model, version 4 (CCSM4) in predicting 1983-2015 summer season precipitation in PF, as well as the dates of onset and demise of the PFWS, using metrics of deterministic and probabilistic skill at hindcast lead times of 0-11 months. In the deterministic skill perspective, CCSM4 shows low skill in predicting the summer season precipitation and the dates of onset and demise of the PFWS, with high error values, low correlation, and high ensemble spread. CCSM4 has a late bias in predicting the onset and demise dates of the PFWS, and the late bias of the onset dates increases with hindcast lead time. For the probabilistic skill assessment, Relative Operating characteristic Curves (ROCs) are employed. The ROC scores indicate that CCSM4 may be skillful in predicting early onsets and late demises of the PFWS at some lead times but show no skill in predicting late onsets or early demises of the PFWS. Hindcasts of total seasonal rainfall amounts are generally unskillful, regardless of how the season is defined. Motivated by the role of the seasonal migration of the NASH in the timing of the onset of the PFWS and the finding of a late bias in the prediction of the onset of the PFWS, this paper also includes an analysis of CCSM4's ability to resolve the position and strength of the NASH at the time of the onset of the PFWS. CCSM4 strongly underestimates the observed interannual variability in the westward extent of the NASH at the time of the onset of the PFWS. This failure to resolve the position of the NASH at the time of the onset of the PFWS may be a contributing reason for the low predictability of the onset of the PFWS by CCSM4.



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

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From eoas-seminar at lists.fsu.edu  Thu Mar 11 08:49:45 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Thu, 11 Mar 2021 13:49:45 +0000
Subject: [Eoas-seminar] MET Seminar on TODAY 3:30 PM
In-Reply-To: <mailman.7417.1615212926.2937.eoas-seminar@lists.fsu.edu>
References: <mailman.7417.1615212926.2937.eoas-seminar@lists.fsu.edu>
Message-ID: <mailman.9328.1615470590.2937.eoas-seminar@lists.fsu.edu>

Dear all,

Please join us for today?s MET Seminar at 3:30 PM, given by Dr. Cristi Proistosescu on ?Coupled climate models fail to simulate observed sea surface temperature patterns, weakening constraints on future warming?. As a reminder, these seminars are open to anyone in the department.

Zoom Link:  https://fsu.zoom.us/j/95514229100?pwd=ZWgxSnZYTEd2bGtONUtvRCtmZHpMZz09
Meeting ID: 955 1422 9100
Passcode: 157472
One tap mobile
+13126266799,,95514229100# US (Chicago)
+16465588656,,95514229100# US (New York)

Graduate students, please stick around after the seminar for a student Q&A with the speaker!

See you there,

Allison


??????????????????
Allison Wing, Ph.D.
Assistant Professor
Earth, Ocean and Atmospheric Science
Florida State University
awing at fsu.edu<mailto:awing at fsu.edu>



On Mar 8, 2021, at 9:15 AM, eoas-seminar--- via Eoas-seminar <eoas-seminar at lists.fsu.edu<mailto:eoas-seminar at lists.fsu.edu>> wrote:

Hi all,

Here is an announcement that we have a MET seminar at 3:30 PM on Thursday, Mar. 11, 2021. The related information can be found in the following and the attached flyer.

Speaker: Dr. Cristi Proistosescu, Department of Atmospheric Sciences, University of Illinois

Title: Coupled climate models fail to simulate observed sea surface temperature patterns, weakening constraints on future warming

Abstract:  The pattern of changes in Sea Surface Temperatures (SSTs) over recent decades has been marked by enhanced warming in the western equatorial Pacific and cooling in the eastern Pacific and Southern Ocean. This pattern led to an acceleration of the Walker circulation, a strengthening of the trade inversion and an increase in low cloud cover in the East Pacific. Current state-of-the-art coupled atmosphere-ocean climate models fail to reproduce the observed SST pattern and attendant changes in atmospheric circulation and clouds. Due to this discrepancy in SST patterns, observations lie outside the coupled model ensemble across several key metrics ? critically among them the net radiative feedback. Our analysis shows that this discrepancy in SST patterns could account for the inability of high climate sensitivity CMIP6 coupled models to reproduce the overall magnitude of historical warming. If the bias is due to either a transient in the forced response or natural variability, then high long-term warming cannot be discounted based on recent warming trends. It remains an open question whether the problem in the coupled models lies with a bias in the forced response or insufficient natural variability.

Time: 3:30 PM, Thursday, Mar. 11, 2021

Zoom Link:  https://fsu.zoom.us/j/95514229100?pwd=ZWgxSnZYTEd2bGtONUtvRCtmZHpMZz09
Meeting ID: 955 1422 9100
Passcode: 157472
One tap mobile
+13126266799,,95514229100# US (Chicago)
+16465588656,,95514229100# US (New York)

It is noted that the pre-seminar session, "Meeting with the Speaker," will start at 3:00 PM with the same zoom link. A post-seminar student-speaker session will start immediately after the seminar. Look forward to seeing you then.

Cheers,

Zhaohua

<MET_Seminar_Flyer_Proistosescu.pdf>_______________________________________________
Eoas-seminar mailing list
Eoas-seminar at lists.fsu.edu<mailto:Eoas-seminar at lists.fsu.edu>
https://lists.fsu.edu/mailman/listinfo/eoas-seminar

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From eoas-seminar at lists.fsu.edu  Thu Mar 11 08:50:56 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Thu, 11 Mar 2021 13:50:56 +0000
Subject: [Eoas-seminar] Meteorology MS Defense for Walker Whitfield, Thursday,
 March 18, 2021, 3:30 PM on zoom https://fsu.zoom.us/j/93595187379
Message-ID: <mailman.9331.1615470657.2937.eoas-seminar@lists.fsu.edu>

Meteorology Seminar

Walker Whitfield

M.S. Meteorology Candidate



Title:  ESTimating Return periods oF extreme tropical cyclone winds ACCounting for effective surface roughness at high resolution

Major Professor:  Dr. Mark Bourassa

Date: March 18th, 2021                           Time: 3:30 PM


Location: Zoom Meeting (URL: https://fsu.zoom.us/j/93595187379)


ABSTRACT

In the United States, tropical cyclones (TCs) were the leading cause of natural disaster-related fatalities and Consumer Price Index (CPI)-adjusted costs averaged over the years 1980-2017. Accurately assessing TC-induced extreme winds is crucial to proper risk management related to mitigation of these losses. Several studies attempt to calculate return periods (TRP), or the statistically estimated average time between events of a given magnitude, for extreme TC winds at point locations or along coastlines. This study seeks to further previous work by addressing concerns related to spatial and temporal resolutions, in addition to the consideration of TC winds as a function of surface roughness and fetch over land. We begin by analyzing HURDAT BestTrack Extended (1988-2017) data (EBTRK) at 0.25-degree (~27km) resolution, assigning a maximum observed windspeed value per grid cell per year, to which several extreme value distributions (EVDs) are fit to the probability distribution function (PDF). The Generalized Pareto Distribution (GPD) is found to have the best fit to the EBTRK data, where fitting parameters are calculated based on these observations using the method of moments. We find the EBTRK dataset, while more continuous and higher resolution than previous assessments, lacks sufficient observations for proper fit to an EVD and it appears to not fully consider the effect of surface roughness on TC wind speed. To address these issues, we use 59,000 years of modeled TC winds produced by the Florida Public Loss Hurricane Model (FPLHM), which considers the effects of effective surface roughness on upstream winds on a fine scale (~90m) at locations of interest roughly every kilometer. The study domain is narrowed down to the Tampa/Clearwater area of Florida for its various terrain and coastline features, from which six locations of varying terrain/coastline proximity are chosen. We reimplement the EVD fitting procedure to the FPLHM data, again finding the GPD to be the best fit, and extrapolating out TRP values for the most extreme TC winds at each location. Empirically calculated TRP values are also plotted for the entire domain to gain a sense of those associated patterns. We find TRP and subsequent expected winds can vary dramatically depending on effective surface roughness over distances at least as short as ~1km (the finest resolution of the modeled data), while distance inland independent of TC weakening plays a lesser of a role after the first few kilometers. The results indicate a need for more accurate future TRP analyses that are both at a fine scale and incorporate effective surface roughness, which also points to the weakness in using historical data in areas with recent changes in land use.

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 --------------
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From eoas-seminar at lists.fsu.edu  Thu Mar 11 21:23:29 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Fri, 12 Mar 2021 02:23:29 +0000
Subject: [Eoas-seminar] MET Seminar on TODAY 3:30 PM
In-Reply-To: <mailman.9328.1615470590.2937.eoas-seminar@lists.fsu.edu>
References: <mailman.7417.1615212926.2937.eoas-seminar@lists.fsu.edu>
 <mailman.9328.1615470590.2937.eoas-seminar@lists.fsu.edu>
Message-ID: <mailman.9699.1615515811.2937.eoas-seminar@lists.fsu.edu>

Thanks to everyone who attended today?s MET seminar! If you missed it, please contact Allison Wing at awing at fsu.edu<mailto:awing at fsu.edu> for the link to the recording (do not reply all to this email).

--------------------------------------------
Allison A. Wing, Ph.D.
Assistant Professor
Department of Earth, Ocean, and Atmospheric Science
Florida State University
awing at fsu.edu<mailto:awing at fsu.edu>

On Mar 11, 2021, at 8:49 AM, eoas-seminar--- via Eoas-seminar <eoas-seminar at lists.fsu.edu<mailto:eoas-seminar at lists.fsu.edu>> wrote:

Dear all,

Please join us for today?s MET Seminar at 3:30 PM, given by Dr. Cristi Proistosescu on ?Coupled climate models fail to simulate observed sea surface temperature patterns, weakening constraints on future warming?. As a reminder, these seminars are open to anyone in the department.

Zoom Link:  https://fsu.zoom.us/j/95514229100?pwd=ZWgxSnZYTEd2bGtONUtvRCtmZHpMZz09
Meeting ID: 955 1422 9100
Passcode: 157472
One tap mobile
+13126266799,,95514229100# US (Chicago)
+16465588656,,95514229100# US (New York)

Graduate students, please stick around after the seminar for a student Q&A with the speaker!

See you there,

Allison


??????????????????
Allison Wing, Ph.D.
Assistant Professor
Earth, Ocean and Atmospheric Science
Florida State University
awing at fsu.edu<mailto:awing at fsu.edu>



On Mar 8, 2021, at 9:15 AM, eoas-seminar--- via Eoas-seminar <eoas-seminar at lists.fsu.edu<mailto:eoas-seminar at lists.fsu.edu>> wrote:

Hi all,

Here is an announcement that we have a MET seminar at 3:30 PM on Thursday, Mar. 11, 2021. The related information can be found in the following and the attached flyer.

Speaker: Dr. Cristi Proistosescu, Department of Atmospheric Sciences, University of Illinois

Title: Coupled climate models fail to simulate observed sea surface temperature patterns, weakening constraints on future warming

Abstract:  The pattern of changes in Sea Surface Temperatures (SSTs) over recent decades has been marked by enhanced warming in the western equatorial Pacific and cooling in the eastern Pacific and Southern Ocean. This pattern led to an acceleration of the Walker circulation, a strengthening of the trade inversion and an increase in low cloud cover in the East Pacific. Current state-of-the-art coupled atmosphere-ocean climate models fail to reproduce the observed SST pattern and attendant changes in atmospheric circulation and clouds. Due to this discrepancy in SST patterns, observations lie outside the coupled model ensemble across several key metrics ? critically among them the net radiative feedback. Our analysis shows that this discrepancy in SST patterns could account for the inability of high climate sensitivity CMIP6 coupled models to reproduce the overall magnitude of historical warming. If the bias is due to either a transient in the forced response or natural variability, then high long-term warming cannot be discounted based on recent warming trends. It remains an open question whether the problem in the coupled models lies with a bias in the forced response or insufficient natural variability.

Time: 3:30 PM, Thursday, Mar. 11, 2021

Zoom Link:  https://fsu.zoom.us/j/95514229100?pwd=ZWgxSnZYTEd2bGtONUtvRCtmZHpMZz09
Meeting ID: 955 1422 9100
Passcode: 157472
One tap mobile
+13126266799,,95514229100# US (Chicago)
+16465588656,,95514229100# US (New York)

It is noted that the pre-seminar session, "Meeting with the Speaker," will start at 3:00 PM with the same zoom link. A post-seminar student-speaker session will start immediately after the seminar. Look forward to seeing you then.

Cheers,

Zhaohua

<MET_Seminar_Flyer_Proistosescu.pdf>_______________________________________________
Eoas-seminar mailing list
Eoas-seminar at lists.fsu.edu<mailto:Eoas-seminar at lists.fsu.edu>
https://lists.fsu.edu/mailman/listinfo/eoas-seminar

_______________________________________________
Eoas-seminar mailing list
Eoas-seminar at lists.fsu.edu<mailto:Eoas-seminar at lists.fsu.edu>
https://lists.fsu.edu/mailman/listinfo/eoas-seminar

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From eoas-seminar at lists.fsu.edu  Fri Mar 12 09:06:50 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Fri, 12 Mar 2021 14:06:50 +0000
Subject: [Eoas-seminar] Reminder TODAY Fwd: EOAS Colloquium Friday March
 12th at 3:30PM
In-Reply-To: <mailman.8029.1615296782.2937.eoas-seminar@lists.fsu.edu>
References: <mailman.8029.1615296782.2937.eoas-seminar@lists.fsu.edu>
Message-ID: <mailman.9813.1615558014.2937.eoas-seminar@lists.fsu.edu>


Hi Everyone,

Please join us TODAY for this week's colloquium speaker which is part of the Distinguished Lectures Series by the International Ocean Discovery Program (IODP):
EOAS Seminar - Friday March 12th @ 3:30 pm

Full Zoom Meeting Info at the bottom of the email. https://fsu.zoom.us/j/93736317803

Speaker: Dr. Christopher Lowery, Research Associate, Jackson School of Geosciences, University of Texas, Austin

Website: https://www.jsg.utexas.edu/researcher/christopher_lowery/

Seminar Title: The Recovery of Life After the End Cretaceous Mass Extinction

Abstract: Without substantial changes in anthropogenic pressures, the current biodiversity crisis could very well rise to the level of a major mass extinction of the magnitude of the so-called "Big Five" mass extinctions of Earth history. These ancient events provide crucial insights into how ecosystems collapse and how they recover afterward; the most recent, the End Cretaceous mass extinction, is perhaps the only major event in the history of life which happened faster than modern climate change. This talk focuses on the recovery of life following the end Cretaceous mass extinction at a variety of scales, from the rapid return to a habitable environment (years to decades after the extinction), to the recovery of marine ecosystem function (within a few million years of the extinction), to finally the recovery of biodiversity (10 myr after the extinction). The timing of these different milestones of the overall recovery of life highlights the fact that humans have the potential to cause changes to the biosphere on geologic timescales and highlights the urgent need for conservation.

[image.png]

Jeremy Owens is inviting you to a scheduled Zoom meeting.

Topic: Lowery Seminar
Time: Mar 12, 2021 03:30 PM Eastern Time (US and Canada)

Join Zoom Meeting
https://fsu.zoom.us/j/93736317803

Meeting ID: 937 3631 7803
One tap mobile
+13126266799,,93736317803# US (Chicago)
+16465588656,,93736317803# 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 (Washington DC)
        +1 346 248 7799 US (Houston)
        +1 669 900 9128 US (San Jose)
        +1 253 215 8782 US (Tacoma)
Meeting ID: 937 3631 7803
Find your local number: https://fsu.zoom.us/u/adDHsjGiaO

Join by SIP
93736317803 at zoomcrc.com<mailto:93736317803 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 Sydney)
103.122.167.55 (Australia Melbourne)
149.137.40.110 (Singapore)
64.211.144.160 (Brazil)
69.174.57.160 (Canada Toronto)
65.39.152.160 (Canada Vancouver)
207.226.132.110 (Japan Tokyo)
149.137.24.110 (Japan Osaka)
Meeting ID: 937 3631 7803

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From eoas-seminar at lists.fsu.edu  Fri Mar 12 12:40:47 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Fri, 12 Mar 2021 17:40:47 +0000
Subject: [Eoas-seminar] Geology Thesis Defense - Sally Gorrie - March 26,
 11:00 - Zoom
Message-ID: <mailman.10002.1615570849.2937.eoas-seminar@lists.fsu.edu>

Geology Thesis Defense - Sally Gorrie - March 26, 11:00
Title: Geological, Geophysical, and Hydrogeological Investigation of the Underground Source of Drinking Water (USDW) Line to Support Deep Well Injection, Northern Pasco County, Florida
Major Professor: Ming Ye

Join Zoom Meeting
https://fsu.zoom.us/j/94543482844<https://urldefense.com/v3/__https:/fsu.zoom.us/j/94543482844__;!!PhOWcWs!ks06MugW-E13ABM9dTfEProfprk8LMlUs7HcCZN2XTdFj4MeyJMu5v-eDbsxHiE$>
Meeting ID: 945 4348 2844
One tap mobile
+16465588656,,94543482844# US (New York)
+13017158592,,94543482844# US (Washington DC)

Dial by your location
        +1 646 558 8656 US (New York)
        +1 301 715 8592 US (Washington DC)
        +1 312 626 6799 US (Chicago)
        +1 669 900 9128 US (San Jose)
        +1 253 215 8782 US (Tacoma)
        +1 346 248 7799 US (Houston)
Meeting ID: 945 4348 2844
Find your local number: https://fsu.zoom.us/u/ahvlwLq1k<https://urldefense.com/v3/__https:/fsu.zoom.us/u/ahvlwLq1k__;!!PhOWcWs!ks06MugW-E13ABM9dTfEProfprk8LMlUs7HcCZN2XTdFj4MeyJMu5v-eic9y93c$>

Join by SIP
94543482844 at zoomcrc.com<mailto:94543482844 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 Sydney)
103.122.167.55 (Australia Melbourne)
149.137.40.110 (Singapore)
64.211.144.160 (Brazil)
69.174.57.160 (Canada Toronto)
65.39.152.160 (Canada Vancouver)
207.226.132.110 (Japan Tokyo)
149.137.24.110 (Japan Osaka)
Meeting ID: 945 4348 2844


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From eoas-seminar at lists.fsu.edu  Fri Mar 12 15:05:24 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Fri, 12 Mar 2021 20:05:24 +0000
Subject: [Eoas-seminar] Fall Speakers
Message-ID: <mailman.10077.1615579526.2937.eoas-seminar@lists.fsu.edu>

Hi Everyone,

We are ready to start planning our fall EOAS Colloquium.? Please send 
your speaker suggestions to myself, Jeremy Owens or Zhaohua Wu.

We are hoping we may be able to have people come in person again in the 
fall, but also plan to give an option of an online presentation if the 
speaker prefers.

Thanks,

Amy

-- 

Amy Baco-Taylor, PhD
Associate Professor
Earth, Ocean, and Atmospheric Sciences
Florida State University

(850) 645-1547

abacotaylor at fsu.edu

NOTE new mailing address:

EOAS Building
1011 Academic Way
Tallahassee, FL 32306




From eoas-seminar at lists.fsu.edu  Mon Mar 15 08:53:24 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Mon, 15 Mar 2021 12:53:24 +0000
Subject: [Eoas-seminar] EOAS colloquium at 3:30 PM on Friday, March 19, 2021
Message-ID: <mailman.10551.1615812806.2937.eoas-seminar@lists.fsu.edu>

Hi all,

Here is an announcement that we have a EOAS colloquium at 3:30 PM on Friday, Mar. 19, 2021. The related information can be found in the following and the attached flyer.

Speaker: Prof. Cheng Li, Department of Climate and Space Sciences and Engineering, University of Michigan

Title: Weather on Jupiter: from Surface to Depth

Abstract:  Jupiter represents a class of planets whose major composition is hydrogen and helium, with a few condensable species forming visible clouds high up. The most recent observation of Jupiter's atmosphere by the Juno spacecraft contradicts what one would infer from the standard picture of Jovian atmospheric dynamics. Specifically, a clustering of cyclonic vortices was observed on either pole of Jupiter. They exist without an ocean or solid surface underneath, and they have endured as unique individuals since their discovery in August 2017. Besides, the ammonia gas, a chemically inert tracer, is not well mixed down to 100 bars of pressure for some unknown reason. These observations cast doubts on whether we truly understand the most basic principles of atmospheric circulation. Answers to questions like ?How does the heat transfer through the atmosphere??, ?What determines the stability of the troposphere?? become elusive when one moves away from Earth?s condition. In this talk, I will present two theories regarding Jovian atmospheric circulation. One explains the stability of the polar vortices and the other illustrates why some tracer gases are depleted

Time: 3:30 PM, Friday, Mar. 19, 2021

Zoom Meeting: https://fsu.zoom.us/j/92048205278?pwd=ZnJaTkFDSGxPdW5FM1lRZmVaME0xQT09

Meeting ID: 920 4820 5278
Passcode: 072100
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Please contact Zhaohua Wu if you have any question regarding this colloquium.

Cheers,

Zhaohua
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From eoas-seminar at lists.fsu.edu  Mon Mar 15 10:08:01 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Mon, 15 Mar 2021 14:08:01 +0000
Subject: [Eoas-seminar] Meteorology MS Defense for Carly Narotsky, Tuesday,
 March 16, 2021, 3:30 PM on zoom https://fsu.zoom.us/j/99446911494
Message-ID: <mailman.10618.1615817284.2937.eoas-seminar@lists.fsu.edu>

Meteorology Seminar

Carly Narotsky

M.S. Meteorology Candidate



Title:  Predictability of the peninsular florida wet season

Major Professor:  Dr. Vasu Misra

Date: March 16th, 2021                          Time: 3:30 PM



Location: Zoom Meeting (URL: https://fsu.zoom.us/j/99446911494)

ABSTRACT

Late spring or early summer brings an abrupt onset of a wet season to Peninsular Florida (PF). PF experiences high daily rain rates throughout the summer until the demise of the wet season in autumn. Prediction of the Peninsular Florida Wet Season (PFWS) is important for Florida's agriculture industry, wildfire management, and water resource management. The onset and demise of the PFWS coincide with seasonal changes in the nearby ocean and atmospheric circulations, including the seasonal migration of the North Atlantic subtropical high (NASH). Yet, predictability of summer season precipitation in PF remains low compared to that of the winter season, which has a teleconnection with ENSO. This paper includes a skill assessment of the Community Climate System Model, version 4 (CCSM4) in predicting 1983-2015 summer season precipitation in PF, as well as the dates of onset and demise of the PFWS, using metrics of deterministic and probabilistic skill at hindcast lead times of 0-11 months. In the deterministic skill perspective, CCSM4 shows low skill in predicting the summer season precipitation and the dates of onset and demise of the PFWS, with high error values, low correlation, and high ensemble spread. CCSM4 has a late bias in predicting the onset and demise dates of the PFWS, and the late bias of the onset dates increases with hindcast lead time. For the probabilistic skill assessment, Relative Operating characteristic Curves (ROCs) are employed. The ROC scores indicate that CCSM4 may be skillful in predicting early onsets and late demises of the PFWS at some lead times but show no skill in predicting late onsets or early demises of the PFWS. Hindcasts of total seasonal rainfall amounts are generally unskillful, regardless of how the season is defined. Motivated by the role of the seasonal migration of the NASH in the timing of the onset of the PFWS and the finding of a late bias in the prediction of the onset of the PFWS, this paper also includes an analysis of CCSM4's ability to resolve the position and strength of the NASH at the time of the onset of the PFWS. CCSM4 strongly underestimates the observed interannual variability in the westward extent of the NASH at the time of the onset of the PFWS. This failure to resolve the position of the NASH at the time of the onset of the PFWS may be a contributing reason for the low predictability of the onset of the PFWS by CCSM4.



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

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From eoas-seminar at lists.fsu.edu  Tue Mar 16 09:21:12 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Tue, 16 Mar 2021 13:21:12 +0000
Subject: [Eoas-seminar] Meteorology MS Defense for Carly Narotsky, Tuesday,
 March 16, 2021, 3:30 PM on zoom https://fsu.zoom.us/j/99446911494
Message-ID: <mailman.11171.1615900874.2937.eoas-seminar@lists.fsu.edu>

Meteorology Seminar

Carly Narotsky

M.S. Meteorology Candidate



Title:  Predictability of the peninsular florida wet season

Major Professor:  Dr. Vasu Misra

Date: March 16th, 2021                          Time: 3:30 PM



Location: Zoom Meeting (URL: https://fsu.zoom.us/j/99446911494)

ABSTRACT

Late spring or early summer brings an abrupt onset of a wet season to Peninsular Florida (PF). PF experiences high daily rain rates throughout the summer until the demise of the wet season in autumn. Prediction of the Peninsular Florida Wet Season (PFWS) is important for Florida's agriculture industry, wildfire management, and water resource management. The onset and demise of the PFWS coincide with seasonal changes in the nearby ocean and atmospheric circulations, including the seasonal migration of the North Atlantic subtropical high (NASH). Yet, predictability of summer season precipitation in PF remains low compared to that of the winter season, which has a teleconnection with ENSO. This paper includes a skill assessment of the Community Climate System Model, version 4 (CCSM4) in predicting 1983-2015 summer season precipitation in PF, as well as the dates of onset and demise of the PFWS, using metrics of deterministic and probabilistic skill at hindcast lead times of 0-11 months. In the deterministic skill perspective, CCSM4 shows low skill in predicting the summer season precipitation and the dates of onset and demise of the PFWS, with high error values, low correlation, and high ensemble spread. CCSM4 has a late bias in predicting the onset and demise dates of the PFWS, and the late bias of the onset dates increases with hindcast lead time. For the probabilistic skill assessment, Relative Operating characteristic Curves (ROCs) are employed. The ROC scores indicate that CCSM4 may be skillful in predicting early onsets and late demises of the PFWS at some lead times but show no skill in predicting late onsets or early demises of the PFWS. Hindcasts of total seasonal rainfall amounts are generally unskillful, regardless of how the season is defined. Motivated by the role of the seasonal migration of the NASH in the timing of the onset of the PFWS and the finding of a late bias in the prediction of the onset of the PFWS, this paper also includes an analysis of CCSM4's ability to resolve the position and strength of the NASH at the time of the onset of the PFWS. CCSM4 strongly underestimates the observed interannual variability in the westward extent of the NASH at the time of the onset of the PFWS. This failure to resolve the position of the NASH at the time of the onset of the PFWS may be a contributing reason for the low predictability of the onset of the PFWS by CCSM4.



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

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From eoas-seminar at lists.fsu.edu  Wed Mar 17 09:01:44 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Wed, 17 Mar 2021 13:01:44 +0000
Subject: [Eoas-seminar] Meteorology MS Defense for Walker Whitfield, Thursday,
 March 18, 2021, 3:30 PM on zoom https://fsu.zoom.us/j/93595187379
Message-ID: <mailman.11589.1615986109.2937.eoas-seminar@lists.fsu.edu>

Meteorology Seminar

Walker Whitfield

M.S. Meteorology Candidate



Title:  ESTimating Return periods oF extreme tropical cyclone winds ACCounting for effective surface roughness at high resolution

Major Professor:  Dr. Mark Bourassa

Date: March 18th, 2021                           Time: 3:30 PM


Location: Zoom Meeting (URL: https://fsu.zoom.us/j/93595187379)


ABSTRACT

In the United States, tropical cyclones (TCs) were the leading cause of natural disaster-related fatalities and Consumer Price Index (CPI)-adjusted costs averaged over the years 1980-2017. Accurately assessing TC-induced extreme winds is crucial to proper risk management related to mitigation of these losses. Several studies attempt to calculate return periods (TRP), or the statistically estimated average time between events of a given magnitude, for extreme TC winds at point locations or along coastlines. This study seeks to further previous work by addressing concerns related to spatial and temporal resolutions, in addition to the consideration of TC winds as a function of surface roughness and fetch over land. We begin by analyzing HURDAT BestTrack Extended (1988-2017) data (EBTRK) at 0.25-degree (~27km) resolution, assigning a maximum observed windspeed value per grid cell per year, to which several extreme value distributions (EVDs) are fit to the probability distribution function (PDF). The Generalized Pareto Distribution (GPD) is found to have the best fit to the EBTRK data, where fitting parameters are calculated based on these observations using the method of moments. We find the EBTRK dataset, while more continuous and higher resolution than previous assessments, lacks sufficient observations for proper fit to an EVD and it appears to not fully consider the effect of surface roughness on TC wind speed. To address these issues, we use 59,000 years of modeled TC winds produced by the Florida Public Loss Hurricane Model (FPLHM), which considers the effects of effective surface roughness on upstream winds on a fine scale (~90m) at locations of interest roughly every kilometer. The study domain is narrowed down to the Tampa/Clearwater area of Florida for its various terrain and coastline features, from which six locations of varying terrain/coastline proximity are chosen. We reimplement the EVD fitting procedure to the FPLHM data, again finding the GPD to be the best fit, and extrapolating out TRP values for the most extreme TC winds at each location. Empirically calculated TRP values are also plotted for the entire domain to gain a sense of those associated patterns. We find TRP and subsequent expected winds can vary dramatically depending on effective surface roughness over distances at least as short as ~1km (the finest resolution of the modeled data), while distance inland independent of TC weakening plays a lesser of a role after the first few kilometers. The results indicate a need for more accurate future TRP analyses that are both at a fine scale and incorporate effective surface roughness, which also points to the weakness in using historical data in areas with recent changes in land use.



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

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From eoas-seminar at lists.fsu.edu  Wed Mar 17 11:56:53 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Wed, 17 Mar 2021 15:56:53 +0000
Subject: [Eoas-seminar] Geology Thesis Defense - Daniel Sheikh - March 31,
 2:00 - Zoom
Message-ID: <mailman.11735.1615996615.2937.eoas-seminar@lists.fsu.edu>

Geology Thesis Defense - Daniel Sheikh - March 31, 2:00pm
Major Professor: Munir Humayun
Title: Trace Element Constraints on processes and precursors of chondrule formation in unequilibrated ordinary chondrites

Abstract:
Chondrules are silicate spherules in chondritic meteorites thought to have formed as free-floating melt droplets created by a transient heat source in the early solar system. Due to their ubiquity in asteroids, determining the origin of chondrules is key to understanding the conditions and processes occurring within the early protoplanetary disk. Recent models for chondrule formation involve the formation of chondrules by nebular shock waves or by protoplanetary impacts. Here, elemental abundances in 153 chondrules from four unequilibrated ordinary chondrites (UOCs) were analyzed by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) to test these models. Chondrules in UOCs are mixtures of mineral phases within a glassy mesostasis. Obtaining a representative bulk chondrule elemental composition by a microanalytical technique is challenging since chondrules are mineralogically heterogeneous at the scale of an analyzed spot. This study, therefore, placed reliance on inter-element ratios of incompatible elements (elements concentrated into the melt phase) that would be representative of the bulk chondrule composition. Most chondrules exhibit both positive and negative Ce and Eu anomalies, and some chondrules even display resolvable negative Yb anomalies, indicating a chondrule forming process that occurred within a chemical microenvironment of varying oxygen fugacity (fO2). The modeled effects of planetesimal collisions within the early solar nebula create rapidly varying fO2 microenvironments in impact vapor plumes that begin oxidized but end reduced. Such models are necessary to explain the observed Ce-Eu-Yb anomalies. Aluminum-rich chondrules contain Nb depletions that indicate inheritance from distinct precursors to ferromagnesian chondrules, possibly containing refractory inclusions. Only a few chondrules exhibit significant fractionations in incompatible refractory element ratios distinctive of differentiated precursors (Zr/Th, Zr/Hf, Nb/Ta), indicating that most UOC chondrule precursors were derived from undifferentiated sources. Our data provide compelling evidence that chondrules from UOCs formed as a byproduct of planetesimal collisions between undifferentiated bodies before nebular hydrogen dissipated. Models of chondrule formation that involved nebular shockwaves or planetesimal collisions after dissipation of nebular gas could not account for the Ce-Eu-Yb anomalies observed in UOC chondrules.


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From eoas-seminar at lists.fsu.edu  Thu Mar 18 09:03:35 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Thu, 18 Mar 2021 13:03:35 +0000
Subject: [Eoas-seminar] Meteorology MS Defense for Walker Whitfield, Thursday,
 March 18, 2021, 3:30 PM on zoom https://fsu.zoom.us/j/93595187379
Message-ID: <mailman.12185.1616072618.2937.eoas-seminar@lists.fsu.edu>

Meteorology Seminar

Walker Whitfield

M.S. Meteorology Candidate



Title:  ESTimating Return periods oF extreme tropical cyclone winds ACCounting for effective surface roughness at high resolution

Major Professor:  Dr. Mark Bourassa

Date: March 18th, 2021                           Time: 3:30 PM


Location: Zoom Meeting (URL: https://fsu.zoom.us/j/93595187379)


ABSTRACT

In the United States, tropical cyclones (TCs) were the leading cause of natural disaster-related fatalities and Consumer Price Index (CPI)-adjusted costs averaged over the years 1980-2017. Accurately assessing TC-induced extreme winds is crucial to proper risk management related to mitigation of these losses. Several studies attempt to calculate return periods (TRP), or the statistically estimated average time between events of a given magnitude, for extreme TC winds at point locations or along coastlines. This study seeks to further previous work by addressing concerns related to spatial and temporal resolutions, in addition to the consideration of TC winds as a function of surface roughness and fetch over land. We begin by analyzing HURDAT BestTrack Extended (1988-2017) data (EBTRK) at 0.25-degree (~27km) resolution, assigning a maximum observed windspeed value per grid cell per year, to which several extreme value distributions (EVDs) are fit to the probability distribution function (PDF). The Generalized Pareto Distribution (GPD) is found to have the best fit to the EBTRK data, where fitting parameters are calculated based on these observations using the method of moments. We find the EBTRK dataset, while more continuous and higher resolution than previous assessments, lacks sufficient observations for proper fit to an EVD and it appears to not fully consider the effect of surface roughness on TC wind speed. To address these issues, we use 59,000 years of modeled TC winds produced by the Florida Public Loss Hurricane Model (FPLHM), which considers the effects of effective surface roughness on upstream winds on a fine scale (~90m) at locations of interest roughly every kilometer. The study domain is narrowed down to the Tampa/Clearwater area of Florida for its various terrain and coastline features, from which six locations of varying terrain/coastline proximity are chosen. We reimplement the EVD fitting procedure to the FPLHM data, again finding the GPD to be the best fit, and extrapolating out TRP values for the most extreme TC winds at each location. Empirically calculated TRP values are also plotted for the entire domain to gain a sense of those associated patterns. We find TRP and subsequent expected winds can vary dramatically depending on effective surface roughness over distances at least as short as ~1km (the finest resolution of the modeled data), while distance inland independent of TC weakening plays a lesser of a role after the first few kilometers. The results indicate a need for more accurate future TRP analyses that are both at a fine scale and incorporate effective surface roughness, which also points to the weakness in using historical data in areas with recent changes in land use.


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

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From eoas-seminar at lists.fsu.edu  Thu Mar 18 12:29:00 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Thu, 18 Mar 2021 16:29:00 +0000
Subject: [Eoas-seminar] Oceanography Thesis Defense - Mackenzie Baysinger -
 March 25, 12 noon - zoom
Message-ID: <mailman.12335.1616084941.2937.eoas-seminar@lists.fsu.edu>

Oceanography Thesis Defense - Mackenzie Baysinger - March 25, 12:00 pm
Title: Compositional Controls on Carbon Storage in Peatlands
Major Professor: Jeff Chanton


Meeting ID: 984 4717 6479
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From eoas-seminar at lists.fsu.edu  Thu Mar 18 14:53:47 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Thu, 18 Mar 2021 18:53:47 +0000
Subject: [Eoas-seminar] Geology Dissertation Defense - Ben Davis - April 1,
 2:00 - Zoom
Message-ID: <mailman.12437.1616093628.2937.eoas-seminar@lists.fsu.edu>

Geology Dissertation Defense - Benjamin Davis - April 1, 2:00
Title: The Tectonostratigraphy, Geochemistry, and Geochronology of the Dadeville Complex and Opelika Group of Alabama and Georgia: The Southern Appalachians Link to the Taconic Orogeny and Associated Suprasubduction System
Major Professor: James Tull


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From eoas-seminar at lists.fsu.edu  Thu Mar 18 17:55:58 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Thu, 18 Mar 2021 21:55:58 +0000
Subject: [Eoas-seminar] Geology Thesis Defense - Greta Mikell - March 26,
 12 noon - zoom
Message-ID: <mailman.12550.1616104561.2937.eoas-seminar@lists.fsu.edu>

Geology Thesis Defense - Greta Mikell - March 26, 12:00pm
Title: Numerical Modeling and Field Investigation of Nitrate Loading from Septic Systems to Surface Water Bodies in The Bayou Chico Watershed, Pensacola, Fl
Major Professor: Ming Ye

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Meeting ID: 929 0812 8100
Passcode: 7947437


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From eoas-seminar at lists.fsu.edu  Fri Mar 19 08:55:08 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Fri, 19 Mar 2021 12:55:08 +0000
Subject: [Eoas-seminar] time correction: Geology Thesis Defense - Greta
 Mikell - March 26, 1:00 - zoom
Message-ID: <mailman.12722.1616158511.2937.eoas-seminar@lists.fsu.edu>

Geology Thesis Defense - Greta Mikell - March 26, 1:00pm (note corrected time)
Title: Numerical Modeling and Field Investigation of Nitrate Loading from Septic Systems to Surface Water Bodies in The Bayou Chico Watershed, Pensacola, Fl
Major Professor: Ming Ye

Join Zoom Meeting
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From eoas-seminar at lists.fsu.edu  Fri Mar 19 09:06:48 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Fri, 19 Mar 2021 13:06:48 +0000
Subject: [Eoas-seminar] EOAS colloquium at 3:30 PM today
Message-ID: <mailman.12733.1616159212.2937.eoas-seminar@lists.fsu.edu>

Hi all,

Here is a reminder that we have a EOAS colloquium at 3:30 PM on Friday, Mar. 19, 2021. The related information can be found in the following and the attached flyer.

Speaker: Prof. Cheng Li, Department of Climate and Space Sciences and Engineering, University of Michigan

Title: Weather on Jupiter: from Surface to Depth

Abstract:  Jupiter represents a class of planets whose major composition is hydrogen and helium, with a few condensable species forming visible clouds high up. The most recent observation of Jupiter's atmosphere by the Juno spacecraft contradicts what one would infer from the standard picture of Jovian atmospheric dynamics. Specifically, a clustering of cyclonic vortices was observed on either pole of Jupiter. They exist without an ocean or solid surface underneath, and they have endured as unique individuals since their discovery in August 2017. Besides, the ammonia gas, a chemically inert tracer, is not well mixed down to 100 bars of pressure for some unknown reason. These observations cast doubts on whether we truly understand the most basic principles of atmospheric circulation. Answers to questions like ?How does the heat transfer through the atmosphere??, ?What determines the stability of the troposphere?? become elusive when one moves away from Earth?s condition. In this talk, I will present two theories regarding Jovian atmospheric circulation. One explains the stability of the polar vortices and the other illustrates why some tracer gases are depleted

Time: 3:30 PM, Friday, Mar. 19, 2021

Zoom Meeting: https://fsu.zoom.us/j/92048205278?pwd=ZnJaTkFDSGxPdW5FM1lRZmVaME0xQT09

Meeting ID: 920 4820 5278
Passcode: 072100
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Meeting ID: 920 4820 5278
Find your local number: https://fsu.zoom.us/u/abnmH8VEaR

Please contact Zhaohua Wu if you have any question regarding this colloquium.

Cheers,

Zhaohua

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From eoas-seminar at lists.fsu.edu  Mon Mar 22 09:32:52 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Mon, 22 Mar 2021 13:32:52 +0000
Subject: [Eoas-seminar] MET seminar at 3:30 PM on Thursday, Mar. 15, 2021
Message-ID: <mailman.13517.1616419975.2937.eoas-seminar@lists.fsu.edu>

Hi all,

Here is an announcement that we have a MET seminar at 3:30 PM on Thursday, Mar. 15, 2021. The related information can be found in the following and the attached flyer.

Speaker: Dr. Zane K. Martin, Department of Atmospheric Sciences, Colorado State University

Title: Predicting the Madden-Julian oscillation using interpretable machine learning

Abstract:  The Madden-Julian oscillation (MJO) is among the most important modes of tropical variability on the planet, and a dominant driver of subseasonal-to-seasonal prediction skill and predictability globally. The past decade has seen substantial advances in MJO prediction using dynamical forecast models, which now show higher skill than statistical MJO forecasts. Also in recent years, an increasing body of literature has demonstrated that machine learning methods represent a new frontier in Earth science with a wide range of applications. After a brief overview of the current state of MJO prediction, we discuss how state-of-the-art machine learning can be used to make real-time MJO forecasts. We introduce a particular type of machine learning model called a neural network, and then demonstrate how it can be used to predict MJO. We show that machine learning models have high skill relative to statistical models overall, but still underperform the very best dynamical MJO models. We close by discussing the strengths of these models and how they might be used and improved going forward, including their potential to lead to insights about the MJO. We also discuss cutting-edge techniques from the field of interpretable AI that allow us to visualize how these neural network makes predictions.

Time: 3:30 PM, Thursday, Mar. 25, 2021

Zoom Meeting: https://fsu.zoom.us/j/97840279436?pwd=YzlkdnNqZG1GaDhVMnJzSmZIb2VwQT09

We will start the zoom meeting site to meet the speaker at 3:00 PM. It is also noted a post-seminar student-speaker session will start immediately after the seminar.

Cheers,

Zhaohua

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From eoas-seminar at lists.fsu.edu  Mon Mar 22 09:43:47 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Mon, 22 Mar 2021 13:43:47 +0000
Subject: [Eoas-seminar] EOAS colloquium at 3:30 PM, Friday, March 26, 2021
Message-ID: <mailman.13528.1616420630.2937.eoas-seminar@lists.fsu.edu>

Hi all,

Here is an announcement that we have a EOAS colloquium at 3:30 PM, Friday, March 26, 2021. The related information can be found in the following and the attached flyer.

Speaker: Prof. Da Yang, Department of Land, Air, and Water Resources, University of California, Davis

Title: Cold Air Rises

Abstract: Conventional knowledge suggests that warm air rises while cold air sinks. In this seminar, the speaker will use satellite observations to show that, on average, rising air is colder than sinking air in the tropical atmosphere. This is due to the buoyancy effect of water vapor?an overlooked effect in studying large-scale circulations and climate. Preliminary analysis suggests that some state-of-art climate models have misrepresented the buoyancy effect of water vapor, which can lead to profound biases in simulating clouds, rainfall, and climate.

Time: 3:30 PM, Friday, Mar. 26, 2021

Zoom Meeting: https://fsu.zoom.us/j/97840279436?pwd=YzlkdnNqZG1GaDhVMnJzSmZIb2VwQT09

Looking forward to meeting you all.

Cheers,

Zhaohua
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From eoas-seminar at lists.fsu.edu  Mon Mar 22 10:16:05 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Mon, 22 Mar 2021 14:16:05 +0000
Subject: [Eoas-seminar] MET seminar at 3:30 PM on Thursday, Mar. 25, 2021
In-Reply-To: <mailman.13517.1616419975.2937.eoas-seminar@lists.fsu.edu>
References: <mailman.13517.1616419975.2937.eoas-seminar@lists.fsu.edu>
Message-ID: <mailman.13545.1616422568.2937.eoas-seminar@lists.fsu.edu>

Just a correction, that the MET seminar given by Dr. Zane Martin is this Thursday, March 25 at 3:30 PM. I know that there was a lot of interest in machine learning following one of our colloquia last year, so I hope to see a good turnout this week for Zane?s talk!

Graduate students, please stick around after the seminar for a student-only Q&A with the speaker. Zane is a postdoc at Colorado State who I?ve known since he started graduate school and he is super friendly and fun to talk to. In addition to his work in modeling of tropical dynamics, Zane has participated in a couple of field campaigns.

Cheers,

Allison

??????????????????
Allison Wing, Ph.D.
Assistant Professor
Earth, Ocean and Atmospheric Science
Florida State University
awing at fsu.edu<mailto:awing at fsu.edu>



On Mar 22, 2021, at 9:32 AM, eoas-seminar--- via Eoas-seminar <eoas-seminar at lists.fsu.edu<mailto:eoas-seminar at lists.fsu.edu>> wrote:

Hi all,

Here is an announcement that we have a MET seminar at 3:30 PM on Thursday, Mar. 25, 2021. The related information can be found in the following and the attached flyer.

Speaker: Dr. Zane K. Martin, Department of Atmospheric Sciences, Colorado State University

Title: Predicting the Madden-Julian oscillation using interpretable machine learning

Abstract:  The Madden-Julian oscillation (MJO) is among the most important modes of tropical variability on the planet, and a dominant driver of subseasonal-to-seasonal prediction skill and predictability globally. The past decade has seen substantial advances in MJO prediction using dynamical forecast models, which now show higher skill than statistical MJO forecasts. Also in recent years, an increasing body of literature has demonstrated that machine learning methods represent a new frontier in Earth science with a wide range of applications. After a brief overview of the current state of MJO prediction, we discuss how state-of-the-art machine learning can be used to make real-time MJO forecasts. We introduce a particular type of machine learning model called a neural network, and then demonstrate how it can be used to predict MJO. We show that machine learning models have high skill relative to statistical models overall, but still underperform the very best dynamical MJO models. We close by discussing the strengths of these models and how they might be used and improved going forward, including their potential to lead to insights about the MJO. We also discuss cutting-edge techniques from the field of interpretable AI that allow us to visualize how these neural network makes predictions.

Time: 3:30 PM, Thursday, Mar. 25, 2021

Zoom Meeting: https://fsu.zoom.us/j/97840279436?pwd=YzlkdnNqZG1GaDhVMnJzSmZIb2VwQT09

We will start the zoom meeting site to meet the speaker at 3:00 PM. It is also noted a post-seminar student-speaker session will start immediately after the seminar.

Cheers,

Zhaohua

<MET_Seminar_Flyer_Martin.pdf>_______________________________________________
Eoas-seminar mailing list
Eoas-seminar at lists.fsu.edu<mailto:Eoas-seminar at lists.fsu.edu>
https://lists.fsu.edu/mailman/listinfo/eoas-seminar

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From eoas-seminar at lists.fsu.edu  Mon Mar 22 10:22:23 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Mon, 22 Mar 2021 14:22:23 +0000
Subject: [Eoas-seminar] Issues with EOAS colloquium at 3:30 PM, Friday,
 March 26, 2021
Message-ID: <mailman.13558.1616422947.2937.eoas-seminar@lists.fsu.edu>

Dear colleagues,

The previous announcement of EOAS colloquium at 3:30 PM, Friday, March 26, 2021 appears to conflict with the scheduling of the make-up diversity training. The colloquium committee is working hard to solve this issue. Either a cancellation or changing of colloquium time is a possibility. I will let you know the update as soon as we find a solution.

Cheers,

Zhaohua
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From eoas-seminar at lists.fsu.edu  Wed Mar 24 09:33:16 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Wed, 24 Mar 2021 13:33:16 +0000
Subject: [Eoas-seminar] Reminder: Oceanography Thesis Defense - Mackenzie
 Baysinger - March 25, 12 noon - zoom
Message-ID: <mailman.14590.1616592799.2937.eoas-seminar@lists.fsu.edu>

Oceanography Thesis Defense - Mackenzie Baysinger - March 25, 12:00 pm
Title: Compositional Controls on Carbon Storage in Peatlands
Major Professor: Jeff Chanton


Meeting ID: 984 4717 6479
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Meeting ID: 984 4717 6479

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From eoas-seminar at lists.fsu.edu  Wed Mar 24 10:47:20 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Wed, 24 Mar 2021 14:47:20 +0000
Subject: [Eoas-seminar] Oceanography Thesis Defense - Amy Holt - April 6,
 10am - zoom
Message-ID: <mailman.14637.1616597243.2937.eoas-seminar@lists.fsu.edu>

Oceanography Thesis Defense - April 6, 10am
Title: THE EVOLUTION OF STREAM DISSOLVED ORGANIC MATTER COMPOSITION FOLLOWING GLACIER RETREAT IN COASTAL WATERSHEDS OF SOUTHEAST ALASKA

Abstract:
Climate change is melting glaciers and altering watershed biogeochemistry across the globe, particularly in regions dominated by mountain glaciers, such as southeast Alaska. Glacier dominated watersheds exhibit distinct dissolved organic matter (DOM) characteristics compared to forested and vegetated watersheds. However, there is a paucity of information on how stream DOM composition changes as glaciers retreat and terrestrial ecosystem succession ensues. Importantly, it is unclear over what timescales these transformations occur. Here, we used bulk, isotopic and ultrahigh resolution molecular-level techniques to assess how streamwater DOM composition evolves in response to glacier retreat and subsequent terrestrial ecosystem succession. For this, water samples were collected from eleven streams across a chronosequence spanning a temporal gradient 0 to ~1,400 years since glacier retreat in coastal, southeast Alaska. During the first ~200 years since glacier retreat, stream DOM showed marked and consistent changes in bulk, isotopic, and molecular-level composition. In particular, there was a decreased abundance of ancient, energy-rich (e.g., elevated aliphatic contribution), low aromaticity (e.g., low SUVA254 and AImod) DOM and an increased abundance of soil and vegetation derived aromatic DOM (e.g., more depleted ?13C, elevated condensed aromatic and polyphenolic contribution) that had a modern radiocarbon age. After ~200 years of ecosystem development, DOM composition was comparable to that observed for other temperate and arctic forested watersheds without permafrost influence. These results underscore the timelines on which glacier retreat may have substantial impacts on watershed biogeochemistry and coastal ecosystems that receive DOM subsidies from these rapidly changing landscapes.

Join Zoom Meeting
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Meeting ID: 984 5010 9424
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Meeting ID: 984 5010 9424
Find your local number: https://fsu.zoom.us/u/acl1unlGQY<https://urldefense.com/v3/__https:/fsu.zoom.us/u/acl1unlGQY__;!!PhOWcWs!jdgQ_ViLo_8mrWKFdiyJ54TpLRtYmJl3ANh8_EZbPynq4tnntIb-FZjevBP1kkI$>

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Join by H.323
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115.114.131.7 (India Mumbai)
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213.244.140.110 (Germany)
103.122.166.55 (Australia Sydney)
103.122.167.55 (Australia Melbourne)
149.137.40.110 (Singapore)
64.211.144.160 (Brazil)
69.174.57.160 (Canada Toronto)
65.39.152.160 (Canada Vancouver)
207.226.132.110 (Japan Tokyo)
149.137.24.110 (Japan Osaka)
Meeting ID: 984 5010 9424

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From eoas-seminar at lists.fsu.edu  Wed Mar 24 20:11:43 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Thu, 25 Mar 2021 00:11:43 +0000
Subject: [Eoas-seminar] Issues with EOAS colloquium at 3:30 PM, Friday,
 March 26, 2021
In-Reply-To: <MN2PR02MB69415F367E81C7B9A04C3DA5B8659@MN2PR02MB6941.namprd02.prod.outlook.com>
References: <MN2PR02MB69415F367E81C7B9A04C3DA5B8659@MN2PR02MB6941.namprd02.prod.outlook.com>
Message-ID: <mailman.14934.1616631106.2937.eoas-seminar@lists.fsu.edu>

Hi all,

The colloquium committee reached a conclusion that this week's colloquium will be cancelled due to the conflict of schedule with diversity training. This colloquium will be rescheduled in the coming fall semester.

Sorry for the inconvenience.

Cheers,

Zhaohua

________________________________
From: Zhaohua Wu
Sent: Monday, March 22, 2021 10:22 AM
To: eoas-seminar at lists.fsu.edu <eoas-seminar at lists.fsu.edu>; info at coaps.fsu.edu <info at coaps.fsu.edu>
Subject: Issues with EOAS colloquium at 3:30 PM, Friday, March 26, 2021

Dear colleagues,

The previous announcement of EOAS colloquium at 3:30 PM, Friday, March 26, 2021 appears to conflict with the scheduling of the make-up diversity training. The colloquium committee is working hard to solve this issue. Either a cancellation or changing of colloquium time is a possibility. I will let you know the update as soon as we find a solution.

Cheers,

Zhaohua
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From eoas-seminar at lists.fsu.edu  Thu Mar 25 09:49:32 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Thu, 25 Mar 2021 13:49:32 +0000
Subject: [Eoas-seminar] MET seminar at 3:30 PM on Thursday, Mar. 25, 2021
In-Reply-To: <MN2PR02MB6941B3ED77465699EF1FBFE0B8659@MN2PR02MB6941.namprd02.prod.outlook.com>
References: <MN2PR02MB6941B3ED77465699EF1FBFE0B8659@MN2PR02MB6941.namprd02.prod.outlook.com>
Message-ID: <mailman.15148.1616680175.2937.eoas-seminar@lists.fsu.edu>

Hi all,

Here is reminder that we have a MET seminar at 3:30 PM Today, Mar. 25, 2021. The related information can be found in the following and the attached flyer.

Speaker: Dr. Zane K. Martin, Department of Atmospheric Sciences, Colorado State University

Title: Predicting the Madden-Julian oscillation using interpretable machine learning

Abstract:  The Madden-Julian oscillation (MJO) is among the most important modes of tropical variability on the planet, and a dominant driver of subseasonal-to-seasonal prediction skill and predictability globally. The past decade has seen substantial advances in MJO prediction using dynamical forecast models, which now show higher skill than statistical MJO forecasts. Also in recent years, an increasing body of literature has demonstrated that machine learning methods represent a new frontier in Earth science with a wide range of applications. After a brief overview of the current state of MJO prediction, we discuss how state-of-the-art machine learning can be used to make real-time MJO forecasts. We introduce a particular type of machine learning model called a neural network, and then demonstrate how it can be used to predict MJO. We show that machine learning models have high skill relative to statistical models overall, but still underperform the very best dynamical MJO models. We close by discussing the strengths of these models and how they might be used and improved going forward, including their potential to lead to insights about the MJO. We also discuss cutting-edge techniques from the field of interpretable AI that allow us to visualize how these neural network makes predictions.

Time: 3:30 PM, Thursday, Mar. 25, 2021

Zoom Meeting: https://fsu.zoom.us/j/97840279436?pwd=YzlkdnNqZG1GaDhVMnJzSmZIb2VwQT09

We will start the zoom meeting site to meet the speaker at 3:00 PM. It is also noted a post-seminar student-speaker session will start immediately after the seminar.

Cheers,

Zhaohua

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From eoas-seminar at lists.fsu.edu  Thu Mar 25 12:10:28 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Thu, 25 Mar 2021 16:10:28 +0000
Subject: [Eoas-seminar] Honors in the Major defense: Hanna Brasseur, Tuesday,
 March 30, 3:30 PM on zoom
 https://fsu.zoom.us/j/92194168456?pwd=WmgrVkdOQW9OZlZGeWpIVFN5ZnVrQT09
Message-ID: <mailman.15266.1616688631.2937.eoas-seminar@lists.fsu.edu>

Honor's in the Major Seminar

Speaker: Hanna Brasseur

Professor: Jon Ahlquist

Title: Disturbances Propagating into the Indian Summer Monsoon: An Observational Study

Time: 3:30 PM, 30 March 2021

Zoom Meeting:   https://fsu.zoom.us/j/92194168456?pwd=WmgrVkdOQW9OZlZGeWpIVFN5ZnVrQT09

Abstract:  This project studied disturbances propagating over the head of the Bay of Bengal (90?E, 20?N), where there are frequent storms during the Indian summer monsoon. Weather data came from the four-times daily global grids in the JRA-55 Japanese Reanalyses. We removed the diurnally-varying annual cycle based on 1 January 1958 through 31 December 2018. Then we identified the 100 largest relative vorticity events at (90?E, 20?N) during the 90-day period 1 June to 29 August for 1958-2018. Events had to be independent in the sense that no two events could occur within a week of each other. Centered around these vorticity maxima, we computed 4-times/day composites beginning 10 days before the maximum and extending to 10 days after the maximum. Time is indexed so that the vorticity maximum at (90?E, 20?N) occurs at t=0. With composites based on vorticity maxima at 850 hPa (approximately z=1.5km), incoming events could be identified at t = -5 days lingering off the coast of Southeast Asia. After a couple days there, the composite broke up when crossing Southeast Asia. This could either be just what it seems, or individual events could move at different speeds so that the composite lost coherency. Over the Bay of Bengal, disturbances lingered again before moving northwest and dissipating over northern India. Composites of the height of pressure surfaces based on the times of vorticity maxima showed low heights, analogous to low pressure, corresponding to vorticity maxima. Composites of upper-tropospheric height and 850-250 hPa thickness reveal mid-latitude connections that are not apparent at 850 hPa.

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

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From eoas-seminar at lists.fsu.edu  Thu Mar 25 17:22:12 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Thu, 25 Mar 2021 21:22:12 +0000
Subject: [Eoas-seminar] MET seminar at 3:30 PM on Thursday, Mar. 25, 2021
In-Reply-To: <mailman.15148.1616680175.2937.eoas-seminar@lists.fsu.edu>
References: <MN2PR02MB6941B3ED77465699EF1FBFE0B8659@MN2PR02MB6941.namprd02.prod.outlook.com>
 <mailman.15148.1616680175.2937.eoas-seminar@lists.fsu.edu>
Message-ID: <mailman.15497.1616707334.2937.eoas-seminar@lists.fsu.edu>

If you missed today?s MET seminar and would like the link to the recording, please contact Allison Wing (awing at fsu.edu<mailto:awing at fsu.edu>), do NOT reply to this email.

I missed the first 10 minutes, but have the recording of the rest of the seminar.


??????????????????
Allison Wing, Ph.D.
Assistant Professor
Earth, Ocean and Atmospheric Science
Florida State University
awing at fsu.edu<mailto:awing at fsu.edu>



On Mar 25, 2021, at 9:49 AM, eoas-seminar--- via Eoas-seminar <eoas-seminar at lists.fsu.edu<mailto:eoas-seminar at lists.fsu.edu>> wrote:

Hi all,

Here is reminder that we have a MET seminar at 3:30 PM Today, Mar. 25, 2021. The related information can be found in the following and the attached flyer.

Speaker: Dr. Zane K. Martin, Department of Atmospheric Sciences, Colorado State University

Title: Predicting the Madden-Julian oscillation using interpretable machine learning

Abstract:  The Madden-Julian oscillation (MJO) is among the most important modes of tropical variability on the planet, and a dominant driver of subseasonal-to-seasonal prediction skill and predictability globally. The past decade has seen substantial advances in MJO prediction using dynamical forecast models, which now show higher skill than statistical MJO forecasts. Also in recent years, an increasing body of literature has demonstrated that machine learning methods represent a new frontier in Earth science with a wide range of applications. After a brief overview of the current state of MJO prediction, we discuss how state-of-the-art machine learning can be used to make real-time MJO forecasts. We introduce a particular type of machine learning model called a neural network, and then demonstrate how it can be used to predict MJO. We show that machine learning models have high skill relative to statistical models overall, but still underperform the very best dynamical MJO models. We close by discussing the strengths of these models and how they might be used and improved going forward, including their potential to lead to insights about the MJO. We also discuss cutting-edge techniques from the field of interpretable AI that allow us to visualize how these neural network makes predictions.

Time: 3:30 PM, Thursday, Mar. 25, 2021

Zoom Meeting: https://fsu.zoom.us/j/97840279436?pwd=YzlkdnNqZG1GaDhVMnJzSmZIb2VwQT09

We will start the zoom meeting site to meet the speaker at 3:00 PM. It is also noted a post-seminar student-speaker session will start immediately after the seminar.

Cheers,

Zhaohua

<MET_Seminar_Flyer_Martin.pdf>_______________________________________________
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https://lists.fsu.edu/mailman/listinfo/eoas-seminar

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From eoas-seminar at lists.fsu.edu  Fri Mar 26 09:18:04 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Fri, 26 Mar 2021 13:18:04 +0000
Subject: [Eoas-seminar] Reminder: Geology Thesis Defense - Sally Gorrie -
 March 26, 11:00 - Zoom
Message-ID: <mailman.15678.1616764686.2937.eoas-seminar@lists.fsu.edu>

Geology Thesis Defense - Sally Gorrie - March 26, 11:00
Title: Geological, Geophysical, and Hydrogeological Investigation of the Underground Source of Drinking Water (USDW) Line to Support Deep Well Injection, Northern Pasco County, Florida
Major Professor: Ming Ye

Join Zoom Meeting
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From eoas-seminar at lists.fsu.edu  Fri Mar 26 09:20:27 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Fri, 26 Mar 2021 13:20:27 +0000
Subject: [Eoas-seminar] Reminder: Geology Thesis Defense - Greta Mikell -
 March 26, 1:00 - zoom
Message-ID: <mailman.15681.1616764829.2937.eoas-seminar@lists.fsu.edu>

Geology Thesis Defense - Greta Mikell - March 26, 1:00pm
Title: Numerical Modeling and Field Investigation of Nitrate Loading from Septic Systems to Surface Water Bodies in The Bayou Chico Watershed, Pensacola, Fl
Major Professor: Ming Ye

Join Zoom Meeting
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From eoas-seminar at lists.fsu.edu  Tue Mar 30 08:40:46 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Tue, 30 Mar 2021 12:40:46 +0000
Subject: [Eoas-seminar] Reminder: Geology Thesis Defense - Daniel Sheikh -
 March 31, 2:00 - Zoom
Message-ID: <mailman.16796.1617108048.2937.eoas-seminar@lists.fsu.edu>

Geology Thesis Defense - Daniel Sheikh - March 31, 2:00pm
Major Professor: Munir Humayun
Title: Trace Element Constraints on processes and precursors of chondrule formation in unequilibrated ordinary chondrites

Abstract:
Chondrules are silicate spherules in chondritic meteorites thought to have formed as free-floating melt droplets created by a transient heat source in the early solar system. Due to their ubiquity in asteroids, determining the origin of chondrules is key to understanding the conditions and processes occurring within the early protoplanetary disk. Recent models for chondrule formation involve the formation of chondrules by nebular shock waves or by protoplanetary impacts. Here, elemental abundances in 153 chondrules from four unequilibrated ordinary chondrites (UOCs) were analyzed by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) to test these models. Chondrules in UOCs are mixtures of mineral phases within a glassy mesostasis. Obtaining a representative bulk chondrule elemental composition by a microanalytical technique is challenging since chondrules are mineralogically heterogeneous at the scale of an analyzed spot. This study, therefore, placed reliance on inter-element ratios of incompatible elements (elements concentrated into the melt phase) that would be representative of the bulk chondrule composition. Most chondrules exhibit both positive and negative Ce and Eu anomalies, and some chondrules even display resolvable negative Yb anomalies, indicating a chondrule forming process that occurred within a chemical microenvironment of varying oxygen fugacity (fO2). The modeled effects of planetesimal collisions within the early solar nebula create rapidly varying fO2 microenvironments in impact vapor plumes that begin oxidized but end reduced. Such models are necessary to explain the observed Ce-Eu-Yb anomalies. Aluminum-rich chondrules contain Nb depletions that indicate inheritance from distinct precursors to ferromagnesian chondrules, possibly containing refractory inclusions. Only a few chondrules exhibit significant fractionations in incompatible refractory element ratios distinctive of differentiated precursors (Zr/Th, Zr/Hf, Nb/Ta), indicating that most UOC chondrule precursors were derived from undifferentiated sources. Our data provide compelling evidence that chondrules from UOCs formed as a byproduct of planetesimal collisions between undifferentiated bodies before nebular hydrogen dissipated. Models of chondrule formation that involved nebular shockwaves or planetesimal collisions after dissipation of nebular gas could not account for the Ce-Eu-Yb anomalies observed in UOC chondrules.


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From eoas-seminar at lists.fsu.edu  Tue Mar 30 14:02:22 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Tue, 30 Mar 2021 18:02:22 +0000
Subject: [Eoas-seminar] FW:  Honors in the Major defense: Hanna Brasseur,
 Tuesday, March 30, 3:30 PM on zoom
 https://fsu.zoom.us/j/92194168456?pwd=WmgrVkdOQW9OZlZGeWpIVFN5ZnVrQT09
In-Reply-To: <mailman.15266.1616688631.2937.eoas-seminar@lists.fsu.edu>
References: <mailman.15266.1616688631.2937.eoas-seminar@lists.fsu.edu>
Message-ID: <mailman.16968.1617127345.2937.eoas-seminar@lists.fsu.edu>



Honor's in the Major Seminar

Speaker: Hanna Brasseur

Professor: Jon Ahlquist

Title: Disturbances Propagating into the Indian Summer Monsoon: An Observational Study

Time: 3:30 PM, 30 March 2021

Zoom Meeting:   https://fsu.zoom.us/j/92194168456?pwd=WmgrVkdOQW9OZlZGeWpIVFN5ZnVrQT09

Abstract:  This project studied disturbances propagating over the head of the Bay of Bengal (90?E, 20?N), where there are frequent storms during the Indian summer monsoon. Weather data came from the four-times daily global grids in the JRA-55 Japanese Reanalyses. We removed the diurnally-varying annual cycle based on 1 January 1958 through 31 December 2018. Then we identified the 100 largest relative vorticity events at (90?E, 20?N) during the 90-day period 1 June to 29 August for 1958-2018. Events had to be independent in the sense that no two events could occur within a week of each other. Centered around these vorticity maxima, we computed 4-times/day composites beginning 10 days before the maximum and extending to 10 days after the maximum. Time is indexed so that the vorticity maximum at (90?E, 20?N) occurs at t=0. With composites based on vorticity maxima at 850 hPa (approximately z=1.5km), incoming events could be identified at t = -5 days lingering off the coast of Southeast Asia. After a couple days there, the composite broke up when crossing Southeast Asia. This could either be just what it seems, or individual events could move at different speeds so that the composite lost coherency. Over the Bay of Bengal, disturbances lingered again before moving northwest and dissipating over northern India. Composites of the height of pressure surfaces based on the times of vorticity maxima showed low heights, analogous to low pressure, corresponding to vorticity maxima. Composites of upper-tropospheric height and 850-250 hPa thickness reveal mid-latitude connections that are not apparent at 850 hPa.

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

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From eoas-seminar at lists.fsu.edu  Wed Mar 31 09:23:16 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Wed, 31 Mar 2021 09:23:16 -0400
Subject: [Eoas-seminar] COAPS Short Seminar Series
Message-ID: <mailman.17227.1617197003.2937.eoas-seminar@lists.fsu.edu>


These talks are usually scheduled for the first Monday of each month. 
The first talk normally starts at 11:00AM; however this month we will 
start at 11:10 because we have only two speakers and the second speaker 
has a time conflict.? Each talk is typically 12 minutes long (similar to 
many professional meetings), with 8 minutes for questions.

These talks will be presented via Zoom, with the following connection 
information:
https://fsu.zoom.us/j/98491660566?pwd=NzBxNzN4LzdsbSs4R3B6RzliOGhhdz09

Meeting ID: 984 9166 0566
Passcode: 478314
<https://fsu.zoom.us/j/99581068787?pwd=UVQvOXVIVjVMaXQ3UTdXeGo5Y1VCZz09>

April 5th

John Uehling: TBA

Description: TBA


Yang Wang: Barotropic vorticity balance of the Ross gyre in B-SOSE data

Description: The aim of this study is to investigate the dynamics of the 
Ross Gyre by analyzing the barotropic vorticity balance.


May 3rd

Renee Richardson: /A Newly Developed Form Drag Derived from Sea Spray 
Influenced Surface Wind Stress at Hurricane Force Winds/

Description: Drag, or momentum transfer, at the air-sea interface is one 
of the major physical processes impacting hurricane intensity. Sea spray 
is suspected of playing a major role on the drag under hurricane wind 
conditions. In this study, we investigate the impact of a newly 
parameterized sea spray generation mechanism on drag, as well as total 
surface stress, under hurricane force winds. I will be discussing our 
findings on the spray influenced surface stresses.


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From eoas-seminar at lists.fsu.edu  Wed Mar 31 15:15:18 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Wed, 31 Mar 2021 19:15:18 +0000
Subject: [Eoas-seminar] Reminder: Geology Dissertation Defense - Ben Davis -
 April 1, 2:00 - Zoom
Message-ID: <mailman.17508.1617218121.2937.eoas-seminar@lists.fsu.edu>

Geology Dissertation Defense - Benjamin Davis - April 1, 2:00
Title: The Tectonostratigraphy, Geochemistry, and Geochronology of the Dadeville Complex and Opelika Group of Alabama and Georgia: The Southern Appalachians Link to the Taconic Orogeny and Associated Suprasubduction System
Major Professor: James Tull


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From eoas-seminar at lists.fsu.edu  Wed Mar 31 16:58:13 2021
From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu)
Date: Wed, 31 Mar 2021 16:58:13 -0400
Subject: [Eoas-seminar] COAPS Short Seminar Series - updated
Message-ID: <mailman.17732.1617224300.2937.eoas-seminar@lists.fsu.edu>


These talks are usually scheduled for the first Monday of each month. 
The first talk normally starts at 11:00AM; however this month we will 
start at 11:10 because we have only two speakers and the second speaker 
has a time conflict.? Each talk is typically 12 minutes long (similar to 
many professional meetings), with 8 minutes for questions.

These talks will be presented via Zoom, with the following connection 
information:
https://fsu.zoom.us/j/98491660566?pwd=NzBxNzN4LzdsbSs4R3B6RzliOGhhdz09

Meeting ID: 984 9166 0566
Passcode: 478314
<https://fsu.zoom.us/j/99581068787?pwd=UVQvOXVIVjVMaXQ3UTdXeGo5Y1VCZz09>

April 5th

Parker Beasley: Validation of IMERG rainfall to monitor onset and demise 
of the rainy season over Peninsular Florida

Description: This study was motivated to assess the fidelity of gridded, 
remotely sensed rainfall analysis for real time monitoring of the wet 
season over the five water management districts (WMDs) of Florida. All 
five WMDs have a significant fraction of the annual rainfall occurring 
in the wet season. Therefore, monitoring and anticipating its variations 
from year to year would be critical to manage water resources in the 
WMDs. ?In this study we analyzed the fidelity of the Integrated 
Multi-Satellite Retrievals for Global Precipitation Mission version 6 
(IMERG) late run at 12-hour latency and final run at 3.5-month latency 
with respect to the rain gauge based analysis from the National Oceanic 
and Atmospheric Administration (NOAA) Climate Prediction Center (CPC). 
The 3.5-month latency product ingests a larger volume of data for 
analysis and uses a more rigorous analysis technique, which would lead 
to the anticipation of a better rainfall analysis than the former 
12-hour latency product.

John Uehling: TBA

Description: TBA

Yang Wang: Barotropic vorticity balance of the Ross gyre in B-SOSE data

Description: The aim of this study is to investigate the dynamics of the 
Ross Gyre by analyzing the barotropic vorticity balance.


May 3rd

Daneisha Blair: TBA

Description: TBA

Renee Richardson: /A Newly Developed Form Drag Derived from Sea Spray 
Influenced Surface Wind Stress at Hurricane Force Winds/

Description: Drag, or momentum transfer, at the air-sea interface is one 
of the major physical processes impacting hurricane intensity. Sea spray 
is suspected of playing a major role on the drag under hurricane wind 
conditions. In this study, we investigate the impact of a newly 
parameterized sea spray generation mechanism on drag, as well as total 
surface stress, under hurricane force winds. I will be discussing our 
findings on the spray influenced surface stresses.


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