From eoas-seminar at lists.fsu.edu Tue Sep 6 13:51:52 2022 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 6 Sep 2022 13:51:52 -0400 Subject: [Eoas-seminar] Fwd: Carothers Lectures 2022-2023 In-Reply-To: <31DEBB93-E2A8-422C-9AD5-555F89C0614A@fsu.edu> References: <31DEBB93-E2A8-422C-9AD5-555F89C0614A@fsu.edu> Message-ID: Hello! Thank you so much for attending the Carothers Lectures series last year in the Bradley Reading Room!! We wanted to be sure you've seen this year's exciting schedule of presentations, which is available online here: https://fda.fsu.edu/carothers-lectures/schedule We hope to see you again this year! If you have not yet RSVPed for lunch, you can find the links for all the upcoming lunches here: https://www.research.fsu.edu/research-offices/ord/milton-carothers-lecture-series Best wishes, many thanks, and I hope you are having a great semester, --Paul P.S. I've also attached the flyer for this month's speaker, Matt Hauer from the Department of Sociology! Feel free to share with your friends and colleagues! -------------- Paul F. Marty, Ph.D. Professor, School of Information, College of Communication and Information Florida State University ? http://marty.cci.fsu.edu/ ? marty at fsu.edu ? @paulfmarty -------------- next part -------------- A non-text attachment was scrubbed... Name: hauer.pdf Type: application/pdf Size: 1400027 bytes Desc: not available URL: From eoas-seminar at lists.fsu.edu Thu Sep 8 11:16:49 2022 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 8 Sep 2022 11:16:49 -0400 Subject: [Eoas-seminar] COAPS Short Seminar Series - Monday Sept. 12th at 11:00AM Message-ID: These talks are usually scheduled for the first Monday of each month. The first talk normally starts at 11:00AM.? 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 Sept. 12th: Ethan Wright: A Comparison of Scatterometer Wind Derivative Calculation Methods Description: Spatial wind derivatives, such as vorticity and divergence, are important variables used to characterize low-level atmospheric flow and spatial derivatives of wind stress are fundamentally important for ocean forcing. Scatterometer swath winds are one of the only sources available for calculating spatial wind derivatives from satellites. However, the methods used to calculate the derivatives have varied between different studies and the assumptions used with different calculation methods can have important implications for the features that are resolved in the derivative fields. This talk gives a comparison of the different methods to calculate wind derivatives from orbital swath winds. David Zierden: Current Climate Conditions in the Southeast and Outlook for the Fall and Winter Description: The presentation will begin with a season-to-date review of the Atlantic hurricane season. This will include a look at the seasonal forecasts, the lull in activity in July and August, and some of the reasons for this lack of activity. The second part of the presentation will assess the current state of ENSO and the high likelihood of a third year of La Nina conditions. ENSO variability plays a large role in modulating the patterns of precipitation and temperature across the Southeast during the fall and winter months and has significant impacts on agriculture and water resources. This is a major factor in seasonal climate outlooks. Xu Chen: Modeling the transport of oyster larvae from spawning areas to suitable juvenile habitat (settlement zones) in Apalachicola Bay, Florida Description: Based on an offline Lagrangian model (FISCM), an oyster larvae model was developed to study the transport of oyster larvae from spawning areas to suitable juvenile habitat (settlement zones) in Apalachicola Bay, Florida. Velocity fields from FVCOM outputs were used to drive the Lagrangian advection. The vertical random walk proposed by Visser (1997) is used for calculating the effect of vertical diffusivity. In this experiment, more than 1 million Lagrangian floats were released between May 1 and May 31, 2012, at the frequency of 10504 floats per 6 hours and the simulation ran for 50 days. These floats are released at oyster habitat sites in Apalachicola Bay, Alligator Harbor, and Ochlockonee Bay. In this model, one float represents a group of oyster larvae, and 100% of the larvae in the group are considered alive when the float is released. If this larvae group is surrounded by salinity between 6 ppt and 27 ppt and temperature between 5?oC and 32?oC, the percentage of alive larvae will not change. However, if the float is surrounded by water out of the normal ranges of salinity and temperature as depicted above, 95% of the larvae in the group will die in 1 week. Each float (oyster larvae group) has a liberty period of 20 days before settling, and a successful settling can be achieved only when the float meets more than one oyster habitat region. This talk will present some preliminary results of the oyster larvae model. Oct. 3rd: Kyra Britton: Application of High-Resolution Winter Seasonal Climate Forecasts for Streamflow Prediction in Central Florida Description: Current global climate models typically run at a resolution of 100 km, which is too coarse to adequately resolve the coastlines and watersheds of Florida. Previous researchers created a reforecast of five environmental variables for a period of 22 years by dynamically downscaling a global model, thus giving more accurate regional data for temperature, evaporation, surface and root level soil moisture, and surface temperature. In this project, I attempt to define the relationship between these five reforecasted variables and the streamflow of several watersheds in Central Florida using statistical techniques, with the end goal of creating a streamflow forecast that will assist water utility managers in decision making Xiaobiao Xu: Mark Bourassa: Current-Related Air-Sea Coupling Nov. 7th Joanna Rodgers: TBA TBA:TBA TBA:TBA Dec. 5th Carly Narotsky: TBA TBA: TBA Shawn Smith: The MarineFlux project -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Mon Sep 12 09:44:26 2022 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 12 Sep 2022 09:44:26 -0400 Subject: [Eoas-seminar] COAPS Short Seminar Series - Monday Sept. 12th at 11:00AM - revised Message-ID: These talks are usually scheduled for the first Monday of each month. The first talk normally starts at 11:00AM.? 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 Sept. 12th: Xu Chen: Modeling the transport of oyster larvae from spawning areas to suitable juvenile habitat (settlement zones) in Apalachicola Bay, Florida Description: Based on an offline Lagrangian model (FISCM), an oyster larvae model was developed to study the transport of oyster larvae from spawning areas to suitable juvenile habitat (settlement zones) in Apalachicola Bay, Florida. Velocity fields from FVCOM outputs were used to drive the Lagrangian advection. The vertical random walk proposed by Visser (1997) is used for calculating the effect of vertical diffusivity. In this experiment, more than 1 million Lagrangian floats were released between May 1 and May 31, 2012, at the frequency of 10504 floats per 6 hours and the simulation ran for 50 days. These floats are released at oyster habitat sites in Apalachicola Bay, Alligator Harbor, and Ochlockonee Bay. In this model, one float represents a group of oyster larvae, and 100% of the larvae in the group are considered alive when the float is released. If this larvae group is surrounded by salinity between 6 ppt and 27 ppt and temperature between 5?oC and 32?oC, the percentage of alive larvae will not change. However, if the float is surrounded by water out of the normal ranges of salinity and temperature as depicted above, 95% of the larvae in the group will die in 1 week. Each float (oyster larvae group) has a liberty period of 20 days before settling, and a successful settling can be achieved only when the float meets more than one oyster habitat region. This talk will present some preliminary results of the oyster larvae model. Ethan Wright: A Comparison of Scatterometer Wind Derivative Calculation Methods Description: Spatial wind derivatives, such as vorticity and divergence, are important variables used to characterize low-level atmospheric flow and spatial derivatives of wind stress are fundamentally important for ocean forcing. Scatterometer swath winds are one of the only sources available for calculating spatial wind derivatives from satellites. However, the methods used to calculate the derivatives have varied between different studies and the assumptions used with different calculation methods can have important implications for the features that are resolved in the derivative fields. This talk gives a comparison of the different methods to calculate wind derivatives from orbital swath winds. Oct. 3rd: Kyra Britton: Application of High-Resolution Winter Seasonal Climate Forecasts for Streamflow Prediction in Central Florida Description: Current global climate models typically run at a resolution of 100 km, which is too coarse to adequately resolve the coastlines and watersheds of Florida. Previous researchers created a reforecast of five environmental variables for a period of 22 years by dynamically downscaling a global model, thus giving more accurate regional data for temperature, evaporation, surface and root level soil moisture, and surface temperature. In this project, I attempt to define the relationship between these five reforecasted variables and the streamflow of several watersheds in Central Florida using statistical techniques, with the end goal of creating a streamflow forecast that will assist water utility managers in decision making Xiaobiao Xu: Mark Bourassa: Current-Related Air-Sea Coupling Nov. 7th Joanna Rodgers: TBA Tony Freveletti: TBA TBA:TBA Dec. 5th Carly Narotsky: TBA TBA: TBA Shawn Smith: The MarineFlux project -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar From eoas-seminar at lists.fsu.edu Mon Sep 12 09:58:40 2022 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 12 Sep 2022 13:58:40 +0000 Subject: [Eoas-seminar] EOAS Colloquium on 9/16 at 3:00 PM Message-ID: Hi all, This is a reminder of the EOAS colloquium on Friday at 3 PM. The colloquium is in-person. I am sure his research and background will be of interest to many different groups and individuals. Everyone is invited to a FLUIDS gathering (food and drinks) from Geology Club that will immediately follow the colloquium. If you would like to meet with the speaker, please email Jeremy Owens (jdowens at fsu.edu). It would be great for him to meet with faculty and/or students across the broad range of topics in our department. Time: 3 pm Friday, September 16th Location: 1050 EOA Speaker: Dr. Besim Dragovic from the University of South Carolina Title: Constraining the rates of subduction metamorphism and metasomatism using chronology and chronometry: insights from the Eocene Abstract: High-pressure metamorphic rocks exhumed from subduction zones offer the only direct samples of the subduction interface, providing important information for understanding active subduction zones. While the timing of subduction zone metamorphism in exhumed terranes has been achievable using geochronology, the timescales and rates of subduction zone processes have been more elusive. However, approaches utilizing multiple mineral-isotope systems, in-situ techniques and/or microsampling of crystal growth domains have provided important constraints on these processes. This talk highlights the use of direct chronology and chronometry from the subduction zone rock record, with particular attention to examples from the Western Alps (Italy and Switzerland). -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Mon Sep 12 14:34:02 2022 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 12 Sep 2022 18:34:02 +0000 Subject: [Eoas-seminar] [Seminar-announce] Colloquium with Keshav J Raja Message-ID: "Spurious internal waves generated during Data Assimilation in ocean model simulations" Keshav J Raja Research Faculty Center of Ocean-Atmospheric Prediction Studies (COAPS) Florida State University NOTE: Please feel free to forward/share this invitation with other groups/disciplines that might be interested in this talk/topic. All are welcome to attend. https://fsu.zoom.us/j/94273595552 Meeting # 942 7359 5552 Sep 14th, 2022, Schedule: Colloquium - Attend F2F (in 499 DSL) or Virtually (via Zoom) * 3:30 to 4:30 PM Eastern Time (US and Canada) Abstract: Most high-resolution ocean forecast systems assimilate ocean observations using sequential Data Assimilation (DA). The updates to model state during DA act as a non-physical forcing term in the model equations. Following an update, the model has to undergo an adjustment to restore its dynamical balance. This adjustment process usually involves inertial oscillations, unrealistic mixing, and some artificial baroclinic and barotropic adjustments. The reduction of the negative impacts of the model adjustment after assimilation is crucial for the validity of a forecast system. In this talk, we examine the characteristics of a propagating noise in the form of spurious internal waves, generated during the model adjustment after DA in a global ocean model simulation. These spurious waves are in a broad near-inertial frequency band and can propagate far distances from their generation sites in the form of low-mode waves, rendering the data assimilative model unsuitable for studying high-frequency motions. An ad-hoc solution to reduce the generation of spurious internal waves during DA will also be presented. -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 3939 bytes Desc: not available URL: -------------- next part -------------- _______________________________________________ SC-Seminar-announce mailing list SC-Seminar-announce at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/sc-seminar-announce From eoas-seminar at lists.fsu.edu Fri Sep 16 09:48:29 2022 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 16 Sep 2022 13:48:29 +0000 Subject: [Eoas-seminar] MET Seminar Thursday September 22 3:00-4:15 PM: Dr. Danielle Touma (NCAR) Message-ID: Dear all, I am pleased to announce our first Meteorology Seminar of the fall semester, which will be given next Thursday September 22 by Dr. Danielle Touma, an Advanced Study Program (ASP) Postdoctoral Fellow at the National Center for Atmospheric Research (NCAR). Dr. Touma will speak about "Anthropogenically-driven increases in extreme fire weather conditions and subsequent extreme precipitation events? (abstract below). Her interests include understanding the impact of climate variability and human activity on the characteristics of extreme climate events. Dr. Touma will be joining us virtually, but we will gather in EOA 1044 to participate in the seminar. If you cannot attend in person due to a medical reason or approved work out of town, please contact Allison Wing (awing at fsu.edu) for remote access. Otherwise, we look forward to seeing everyone in 1044! Please join us at 3 PM for refreshments prior to the beginning of the talk at 3:15 PM. Graduate students are invited to participate in a student-only Q&A with the speaker at 2:15 PM in EOA 6067. This is a great opportunity to meet an early career scientist and discuss science and work/life/career topics in an informal setting. Dr. Touma is available for other virtual meetings between 1-2 PM on Thursday; please contact Allison Wing (awing at fsu.edu) if you would like to meet with her during that time. If you would like to meet with Dr. Touma at a different time next week, please get in touch with her directly. We look forward to seeing you next Thursday! DATE: Thursday September 22 TIME: Refreshments at 3 PM, Talk 3:15 PM - 4:15 PM. LOCATION: EOA 1044 (speaker remote) SPEAKER: Dr. Danielle Touma TITLE: Anthropogenically-driven increases in extreme fire weather conditions and subsequent extreme precipitation events ABSTRACT: Anthropogenic climate change is already driving large increases in wildfire frequency and extent globally, a trend expected to continue throughout the 21st century. In this talk, I disentangle the roles of anthropogenic aerosol and greenhouse gases (GHG) emissions, biomass burning and land use/land cover change on extreme fire weather ? i.e., dry, warm, and windy conditions that lead to fire ignition and spread. By leveraging the CESM ?all-forcing? and ?all-but-one-forcing? Large Ensemble experiments, we show that historical greenhouse gas emissions have increased the risk of extreme fire weather in recent decades, and could double this risk in many wildfire-prone regions by the end of the 21st century. While aerosols have generally dampened the risk of extreme wildfire conditions in the past, their effect is diminished and more localized in future projections. These findings provide key insight into the observed and projected changes in wildfire risks and have significant implications for mitigation and adaptation strategies. Next, I use the all-forcing CESM Large Ensemble to explore the implications of heightened fire weather conditions in future years on the probability of post-fire extreme precipitation over the Western U.S. Generally, we find robust and substantial increases in the likelihood of extreme precipitation occurring after an extreme fire weather event by the end of the 21st century. The frequency of extreme fire weather events followed within one year by at least one spatially co-located extreme rainfall event doubles in California and increases by 700% in the Pacific Northwest. In addition, more than 90% of extreme fire weather events in California, Colorado, and the Pacific Northwest could eventually be followed by at least three spatially co-located extreme rainfall events within 5 years in such a scenario. These temporally compounding events could lead to a greater risk of debris flows and flash floods, magnifying wildfire-related damages incurred by a region. Cheers, Allison On behalf of the MET Seminar Committee ?????????????????? Allison Wing, Ph.D. Associate Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: 2022_Fall_MET_seminar_09_22_Danielle_Touma.pdf Type: application/pdf Size: 2820199 bytes Desc: 2022_Fall_MET_seminar_09_22_Danielle_Touma.pdf URL: From eoas-seminar at lists.fsu.edu Fri Sep 16 10:07:55 2022 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 16 Sep 2022 10:07:55 -0400 Subject: [Eoas-seminar] Fwd: EOAS Colloquium on 9/16 at 3:00 PM - TODAY In-Reply-To: References: Message-ID: Hi all, This is a reminder of the EOAS colloquium Today at 3 PM. The colloquium is in-person. I am sure his research and background will be of interest to many different groups and individuals. *Everyone is invited to a FLUIDS gathering (food and drinks) from Geology Club that will immediately follow the colloquium.* If you would like to meet with the speaker, please email Jeremy Owens (jdowens at fsu.edu). It would be great for him to meet with faculty and/or students across the broad range of topics in our department. _Time_: 3 pm Friday, September 16^th _Location_: 1050 EOA _Speaker_: Dr. Besim Dragovic from the University of South Carolina __ _Title_: Constraining the rates of subduction metamorphism and metasomatism using chronology and chronometry: insights from the Eocene _Abstract_: High-pressure metamorphic rocks exhumed from subduction zones offer the only direct samples of the subduction interface, providing important information for understanding active subduction zones. While the timing of subduction zone metamorphism in exhumed terranes has been achievable using geochronology, the timescales and rates of subduction zone processes have been more elusive. However, approaches utilizing multiple mineral-isotope systems, in-situ techniques and/or microsampling of crystal growth domains have provided important constraints on these processes.?This talk highlights the use of direct chronology and chronometry from the subduction zone rock record, with particular attention to examples from the Western Alps (Italy and Switzerland). -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar From eoas-seminar at lists.fsu.edu Fri Sep 16 10:10:39 2022 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 16 Sep 2022 14:10:39 +0000 Subject: [Eoas-seminar] [Seminar-announce] Scientific Computing Colloquium with Brandon Gusto Message-ID: "A Data-Driven Approach to Deflagration-to-Detonation Modeling in Thermonuclear Supernovae" Brandon Gusto Graduate Student, Dept. of Scientific Computing, Florida State University NOTE: Please feel free to forward/share this invitation with other groups/disciplines that might be interested in this talk/topic. All are welcome to attend. https://fsu.zoom.us/j/94273595552 Meeting # 942 7359 5552 Sep 21st, 2022, Schedule: * 3:30 to 4:30 PM Eastern Time (US and Canada) Colloquium - Attend F2F (in 499 DSL) or Virtually (via Zoom) Abstract: We aim to construct a physics-motivated model of deflagration-to-detonation transition (DDT) in application to explosions of thermonuclear supernovae (SN Ia). The DDT mechanism has been postulated as the necessary physics process to obtain qualitative agreement between SN Ia observations and computational explosion models. This work builds upon a series of studies of turbulent combustion that develops during the final stages of the SN explosion. These studies indicate that DDT in SN Ia is possible via the Zel'dovich reactivity gradient mechanism. We investigate the Zel'dovich mechanism with a series of direct numerical simulations (DNS) for a range of conditions expected to exist in the dense white dwarf plasma. We use the results of these well resolved simulations to construct a data-driven sub-grid scale model (SGSM) of DDT for the large-eddy simulation (LES) scales in SN Ia. The SGSM is implemented using a Keras/Tensorflow-based artificial neural network (ANN), trained on the aforementioned DNS database, and integrated into our supernova simulation code, FLASH/Proteus. The model is evaluated both in the training environment as well as in a series of reactive large-eddy simulations. We analyze the performance of the SGSM in terms of computational efficiency and accuracy of the classification of prospective DDT kernels. In the future, the SGSM model will be applied to multi-dimensional simulations of reactive turbulence, RTI-unstable deflagrations, and integrated SN Ia explosion models. The integrated SN Ia explosion models will require the multi-scale extension of the SGSM to reach the large spatial scales present in those models. -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 4507 bytes Desc: not available URL: -------------- next part -------------- _______________________________________________ SC-Seminar-announce mailing list SC-Seminar-announce at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/sc-seminar-announce From eoas-seminar at lists.fsu.edu Mon Sep 19 17:24:41 2022 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 19 Sep 2022 21:24:41 +0000 Subject: [Eoas-seminar] EOAS Colloquium on 9/23 at 3:00 PM Message-ID: Hi all, This is a reminder of the EOAS colloquium on Friday at 3 PM. The colloquium is virtual only on zoom (link below). I am sure the speaker's research, and the background will be of interest to many different groups and individuals. If you would like to meet with the speaker virtually, please email Jeremy Owens (jdowens at fsu.edu). It would be great for the speaker to meet with faculty, research scientist, postdoctoral researchers, and/or students across our department's broad range of topics. Time: 3 pm Friday, September 23rd Location: Zoom - https://fsu.zoom.us/j/98875471215 Speaker: Dr. Courtney Sprain from the University of Florida Title: Understanding the causes and consequences of the Cretaceous-Paleogene Mass Extinction event Abstract: Since the Cambrian explosion roughly 541 million years ago, the proliferation of life on Earth has been interrupted by five major mass extinction events, marked by the sudden loss of 50 to 96% of all species on Earth. In general, these extinction events share many common factors: they are all geologically abrupt (occurring on timescales on the order of a few million years or less), they are commonly associated with major shifts in climate, and four out of the five mass extinction events correlate in time with the eruption of large igneous provinces (LIPs). However, to properly understand the ingredients that are necessary to cause large-scale ecosystem collapse, and to what extent these ancient events can inform our modern ecological crises and search for habitable planets, we have to step back from these broad generalizations and look into these extinction events in more detail. This presentation gives an overview of recent advances on this topic, specifically focused on the Cretaceous-Paleogene extinction event, including high-precision geochronology, new methods for the assessment of eruptive tempo of LIPs, and multidisciplinary approaches, that are helping to clarify the causes and consequences of mass extinction events. -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Wed Sep 21 09:19:21 2022 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Wed, 21 Sep 2022 13:19:21 +0000 Subject: [Eoas-seminar] MET Seminar Thursday September 22 3:00-4:15 PM: Dr. Danielle Touma (NCAR) In-Reply-To: References: Message-ID: Dear all, This is a reminder of the MET seminar given by Dr. Danielle Touma tomorrow Thursday September 22 on "Anthropogenically-driven increases in extreme fire weather conditions and subsequent extreme precipitation events?. There is a graduate student Q&A with the speaker at 2:15 in EOA 6067. Refreshments at 3 PM in EOA 1044. Talk starts at 3:15 (live streamed in EOA 1044). If you would like to meet with Dr. Touma tomorrow, please let me know; she is available between 1 and 2 PM. See you there! Cheers, Allison ?????????????????? Allison Wing, Ph.D. Associate Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu On Sep 16, 2022, at 9:48 AM, eoas-seminar--- via Eoas-seminar > wrote: Dear all, I am pleased to announce our first Meteorology Seminar of the fall semester, which will be given next Thursday September 22 by Dr. Danielle Touma, an Advanced Study Program (ASP) Postdoctoral Fellow at the National Center for Atmospheric Research (NCAR). Dr. Touma will speak about "Anthropogenically-driven increases in extreme fire weather conditions and subsequent extreme precipitation events? (abstract below). Her interests include understanding the impact of climate variability and human activity on the characteristics of extreme climate events. Dr. Touma will be joining us virtually, but we will gather in EOA 1044 to participate in the seminar. If you cannot attend in person due to a medical reason or approved work out of town, please contact Allison Wing (awing at fsu.edu) for remote access. Otherwise, we look forward to seeing everyone in 1044! Please join us at 3 PM for refreshments prior to the beginning of the talk at 3:15 PM. Graduate students are invited to participate in a student-only Q&A with the speaker at 2:15 PM in EOA 6067. This is a great opportunity to meet an early career scientist and discuss science and work/life/career topics in an informal setting. Dr. Touma is available for other virtual meetings between 1-2 PM on Thursday; please contact Allison Wing (awing at fsu.edu) if you would like to meet with her during that time. If you would like to meet with Dr. Touma at a different time next week, please get in touch with her directly. We look forward to seeing you next Thursday! DATE: Thursday September 22 TIME: Refreshments at 3 PM, Talk 3:15 PM - 4:15 PM. LOCATION: EOA 1044 (speaker remote) SPEAKER: Dr. Danielle Touma TITLE: Anthropogenically-driven increases in extreme fire weather conditions and subsequent extreme precipitation events ABSTRACT: Anthropogenic climate change is already driving large increases in wildfire frequency and extent globally, a trend expected to continue throughout the 21st century. In this talk, I disentangle the roles of anthropogenic aerosol and greenhouse gases (GHG) emissions, biomass burning and land use/land cover change on extreme fire weather ? i.e., dry, warm, and windy conditions that lead to fire ignition and spread. By leveraging the CESM ?all-forcing? and ?all-but-one-forcing? Large Ensemble experiments, we show that historical greenhouse gas emissions have increased the risk of extreme fire weather in recent decades, and could double this risk in many wildfire-prone regions by the end of the 21st century. While aerosols have generally dampened the risk of extreme wildfire conditions in the past, their effect is diminished and more localized in future projections. These findings provide key insight into the observed and projected changes in wildfire risks and have significant implications for mitigation and adaptation strategies. Next, I use the all-forcing CESM Large Ensemble to explore the implications of heightened fire weather conditions in future years on the probability of post-fire extreme precipitation over the Western U.S. Generally, we find robust and substantial increases in the likelihood of extreme precipitation occurring after an extreme fire weather event by the end of the 21st century. The frequency of extreme fire weather events followed within one year by at least one spatially co-located extreme rainfall event doubles in California and increases by 700% in the Pacific Northwest. In addition, more than 90% of extreme fire weather events in California, Colorado, and the Pacific Northwest could eventually be followed by at least three spatially co-located extreme rainfall events within 5 years in such a scenario. These temporally compounding events could lead to a greater risk of debris flows and flash floods, magnifying wildfire-related damages incurred by a region. Cheers, Allison On behalf of the MET Seminar Committee ?????????????????? Allison Wing, Ph.D. Associate Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu <2022_Fall_MET_seminar_09_22_Danielle_Touma.pdf>_______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Thu Sep 22 11:19:24 2022 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 22 Sep 2022 15:19:24 +0000 Subject: [Eoas-seminar] Fw: MET Seminar Thursday September 22 3:00-4:15 PM: Dr. Danielle Touma (NCAR) In-Reply-To: References: Message-ID: Hi all, This is a reminder that we will have a MET seminar today at 3:00 PM in EOA 1044. See the forwarded information. Best, Zhaohua ________________________________ From: Eoas-seminar on behalf of eoas-seminar--- via Eoas-seminar Sent: Wednesday, September 21, 2022 9:19 AM To: eoas-seminar at lists.fsu.edu Subject: Re: [Eoas-seminar] MET Seminar Thursday September 22 3:00-4:15 PM: Dr. Danielle Touma (NCAR) Dear all, This is a reminder of the MET seminar given by Dr. Danielle Touma tomorrow Thursday September 22 on "Anthropogenically-driven increases in extreme fire weather conditions and subsequent extreme precipitation events?. There is a graduate student Q&A with the speaker at 2:15 in EOA 6067. Refreshments at 3 PM in EOA 1044. Talk starts at 3:15 (live streamed in EOA 1044). If you would like to meet with Dr. Touma tomorrow, please let me know; she is available between 1 and 2 PM. See you there! Cheers, Allison ?????????????????? Allison Wing, Ph.D. Associate Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu On Sep 16, 2022, at 9:48 AM, eoas-seminar--- via Eoas-seminar > wrote: Dear all, I am pleased to announce our first Meteorology Seminar of the fall semester, which will be given next Thursday September 22 by Dr. Danielle Touma, an Advanced Study Program (ASP) Postdoctoral Fellow at the National Center for Atmospheric Research (NCAR). Dr. Touma will speak about "Anthropogenically-driven increases in extreme fire weather conditions and subsequent extreme precipitation events? (abstract below). Her interests include understanding the impact of climate variability and human activity on the characteristics of extreme climate events. Dr. Touma will be joining us virtually, but we will gather in EOA 1044 to participate in the seminar. If you cannot attend in person due to a medical reason or approved work out of town, please contact Allison Wing (awing at fsu.edu) for remote access. Otherwise, we look forward to seeing everyone in 1044! Please join us at 3 PM for refreshments prior to the beginning of the talk at 3:15 PM. Graduate students are invited to participate in a student-only Q&A with the speaker at 2:15 PM in EOA 6067. This is a great opportunity to meet an early career scientist and discuss science and work/life/career topics in an informal setting. Dr. Touma is available for other virtual meetings between 1-2 PM on Thursday; please contact Allison Wing (awing at fsu.edu) if you would like to meet with her during that time. If you would like to meet with Dr. Touma at a different time next week, please get in touch with her directly. We look forward to seeing you next Thursday! DATE: Thursday September 22 TIME: Refreshments at 3 PM, Talk 3:15 PM - 4:15 PM. LOCATION: EOA 1044 (speaker remote) SPEAKER: Dr. Danielle Touma TITLE: Anthropogenically-driven increases in extreme fire weather conditions and subsequent extreme precipitation events ABSTRACT: Anthropogenic climate change is already driving large increases in wildfire frequency and extent globally, a trend expected to continue throughout the 21st century. In this talk, I disentangle the roles of anthropogenic aerosol and greenhouse gases (GHG) emissions, biomass burning and land use/land cover change on extreme fire weather ? i.e., dry, warm, and windy conditions that lead to fire ignition and spread. By leveraging the CESM ?all-forcing? and ?all-but-one-forcing? Large Ensemble experiments, we show that historical greenhouse gas emissions have increased the risk of extreme fire weather in recent decades, and could double this risk in many wildfire-prone regions by the end of the 21st century. While aerosols have generally dampened the risk of extreme wildfire conditions in the past, their effect is diminished and more localized in future projections. These findings provide key insight into the observed and projected changes in wildfire risks and have significant implications for mitigation and adaptation strategies. Next, I use the all-forcing CESM Large Ensemble to explore the implications of heightened fire weather conditions in future years on the probability of post-fire extreme precipitation over the Western U.S. Generally, we find robust and substantial increases in the likelihood of extreme precipitation occurring after an extreme fire weather event by the end of the 21st century. The frequency of extreme fire weather events followed within one year by at least one spatially co-located extreme rainfall event doubles in California and increases by 700% in the Pacific Northwest. In addition, more than 90% of extreme fire weather events in California, Colorado, and the Pacific Northwest could eventually be followed by at least three spatially co-located extreme rainfall events within 5 years in such a scenario. These temporally compounding events could lead to a greater risk of debris flows and flash floods, magnifying wildfire-related damages incurred by a region. Cheers, Allison On behalf of the MET Seminar Committee ?????????????????? Allison Wing, Ph.D. Associate Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu <2022_Fall_MET_seminar_09_22_Danielle_Touma.pdf>_______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- _______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar From eoas-seminar at lists.fsu.edu Thu Sep 22 17:06:57 2022 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 22 Sep 2022 21:06:57 +0000 Subject: [Eoas-seminar] MET Seminar Thursday September 22 3:00-4:15 PM: Dr. Danielle Touma (NCAR) In-Reply-To: References: Message-ID: Thanks everyone who attended the Meteorology seminar today! If you missed it and would like access to the recording, please contact awing at fsu.edu Cheers, Allison ?????????????????? Allison Wing, Ph.D. Associate Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu On Sep 22, 2022, at 11:19 AM, eoas-seminar--- via Eoas-seminar > wrote: Hi all, This is a reminder that we will have a MET seminar today at 3:00 PM in EOA 1044. See the forwarded information. Best, Zhaohua ________________________________ From: Eoas-seminar > on behalf of eoas-seminar--- via Eoas-seminar > Sent: Wednesday, September 21, 2022 9:19 AM To: eoas-seminar at lists.fsu.edu > Subject: Re: [Eoas-seminar] MET Seminar Thursday September 22 3:00-4:15 PM: Dr. Danielle Touma (NCAR) Dear all, This is a reminder of the MET seminar given by Dr. Danielle Touma tomorrow Thursday September 22 on "Anthropogenically-driven increases in extreme fire weather conditions and subsequent extreme precipitation events?. There is a graduate student Q&A with the speaker at 2:15 in EOA 6067. Refreshments at 3 PM in EOA 1044. Talk starts at 3:15 (live streamed in EOA 1044). If you would like to meet with Dr. Touma tomorrow, please let me know; she is available between 1 and 2 PM. See you there! Cheers, Allison ?????????????????? Allison Wing, Ph.D. Associate Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu On Sep 16, 2022, at 9:48 AM, eoas-seminar--- via Eoas-seminar > wrote: Dear all, I am pleased to announce our first Meteorology Seminar of the fall semester, which will be given next Thursday September 22 by Dr. Danielle Touma, an Advanced Study Program (ASP) Postdoctoral Fellow at the National Center for Atmospheric Research (NCAR). Dr. Touma will speak about "Anthropogenically-driven increases in extreme fire weather conditions and subsequent extreme precipitation events? (abstract below). Her interests include understanding the impact of climate variability and human activity on the characteristics of extreme climate events. Dr. Touma will be joining us virtually, but we will gather in EOA 1044 to participate in the seminar. If you cannot attend in person due to a medical reason or approved work out of town, please contact Allison Wing (awing at fsu.edu) for remote access. Otherwise, we look forward to seeing everyone in 1044! Please join us at 3 PM for refreshments prior to the beginning of the talk at 3:15 PM. Graduate students are invited to participate in a student-only Q&A with the speaker at 2:15 PM in EOA 6067. This is a great opportunity to meet an early career scientist and discuss science and work/life/career topics in an informal setting. Dr. Touma is available for other virtual meetings between 1-2 PM on Thursday; please contact Allison Wing (awing at fsu.edu) if you would like to meet with her during that time. If you would like to meet with Dr. Touma at a different time next week, please get in touch with her directly. We look forward to seeing you next Thursday! DATE: Thursday September 22 TIME: Refreshments at 3 PM, Talk 3:15 PM - 4:15 PM. LOCATION: EOA 1044 (speaker remote) SPEAKER: Dr. Danielle Touma TITLE: Anthropogenically-driven increases in extreme fire weather conditions and subsequent extreme precipitation events ABSTRACT: Anthropogenic climate change is already driving large increases in wildfire frequency and extent globally, a trend expected to continue throughout the 21st century. In this talk, I disentangle the roles of anthropogenic aerosol and greenhouse gases (GHG) emissions, biomass burning and land use/land cover change on extreme fire weather ? i.e., dry, warm, and windy conditions that lead to fire ignition and spread. By leveraging the CESM ?all-forcing? and ?all-but-one-forcing? Large Ensemble experiments, we show that historical greenhouse gas emissions have increased the risk of extreme fire weather in recent decades, and could double this risk in many wildfire-prone regions by the end of the 21st century. While aerosols have generally dampened the risk of extreme wildfire conditions in the past, their effect is diminished and more localized in future projections. These findings provide key insight into the observed and projected changes in wildfire risks and have significant implications for mitigation and adaptation strategies. Next, I use the all-forcing CESM Large Ensemble to explore the implications of heightened fire weather conditions in future years on the probability of post-fire extreme precipitation over the Western U.S. Generally, we find robust and substantial increases in the likelihood of extreme precipitation occurring after an extreme fire weather event by the end of the 21st century. The frequency of extreme fire weather events followed within one year by at least one spatially co-located extreme rainfall event doubles in California and increases by 700% in the Pacific Northwest. In addition, more than 90% of extreme fire weather events in California, Colorado, and the Pacific Northwest could eventually be followed by at least three spatially co-located extreme rainfall events within 5 years in such a scenario. These temporally compounding events could lead to a greater risk of debris flows and flash floods, magnifying wildfire-related damages incurred by a region. Cheers, Allison On behalf of the MET Seminar Committee ?????????????????? Allison Wing, Ph.D. Associate Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu <2022_Fall_MET_seminar_09_22_Danielle_Touma.pdf>_______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar _______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar _______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Thu Sep 22 17:22:33 2022 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 22 Sep 2022 17:22:33 -0400 Subject: [Eoas-seminar] Upcoming Thesis and Dissertation Defenses Message-ID: As you are aware, we have an open house invitation for thesis and dissertation defenses.? This practice is followed to ensure we build a scholarly community among our student and faculty population.? In keeping with that mission, please consider joining us for the upcoming dissertation and thesis defenses, which are listed below.? In general, all defenses are posted to our public calendar , so you can always see what's coming around soon. *_26 Sept, rm 5067 EOA, 2 PM to 3:30 PM_* GLY Dissertation Prospectus Dfns--Chance Hannold Title:? Isotopic evidence for Late Cenozoic ecosystem and environmental changes in Mexico and Southern California: Implications for the Great American Biotic Interchange and the Late Pleistocene megafauna extinctions? [Major Prof, Dr. Y Wang] Zoom ID: https://fsu.zoom.us/j/96157003861 -- *Jimmy Pastrano* */Coordinator of Graduate Studies/* */FSU Earth, Ocean, and Atmospheric Science/* *3008-C EOAS Bldg* *Tallahassee, FL 32306-4520*** -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Fri Sep 23 09:00:44 2022 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 23 Sep 2022 13:00:44 +0000 Subject: [Eoas-seminar] EOAS Colloquium Today at 3:00 PM In-Reply-To: References: Message-ID: Hi all, This is a reminder of the EOAS colloquium today at 3 PM. The colloquium is virtual only on zoom (link below). I am sure the speaker's research, and the background will be of interest to many different groups and individuals. I look forward to seeing everyone virtually today. Time: 3 pm Today, September 23rd Location: Zoom - https://fsu.zoom.us/j/98875471215 Speaker: Dr. Courtney Sprain from the University of Florida Title: Understanding the causes and consequences of the Cretaceous-Paleogene Mass Extinction event Abstract: Since the Cambrian explosion roughly 541 million years ago, the proliferation of life on Earth has been interrupted by five major mass extinction events, marked by the sudden loss of 50 to 96% of all species on Earth. In general, these extinction events share many common factors: they are all geologically abrupt (occurring on timescales on the order of a few million years or less), they are commonly associated with major shifts in climate, and four out of the five mass extinction events correlate in time with the eruption of large igneous provinces (LIPs). However, to properly understand the ingredients that are necessary to cause large-scale ecosystem collapse, and to what extent these ancient events can inform our modern ecological crises and search for habitable planets, we have to step back from these broad generalizations and look into these extinction events in more detail. This presentation gives an overview of recent advances on this topic, specifically focused on the Cretaceous-Paleogene extinction event, including high-precision geochronology, new methods for the assessment of eruptive tempo of LIPs, and multidisciplinary approaches, that are helping to clarify the causes and consequences of mass extinction events. -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Fri Sep 23 09:50:35 2022 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 23 Sep 2022 13:50:35 +0000 Subject: [Eoas-seminar] MET Seminar Thursday September 29 3:00-4:15 PM: Dr. Yair Cohen (Climate Modeling Alliance, Caltech) Message-ID: Dear all, Please join us for our next Meteorology Seminar, which will be given next Thursday September 22 by Dr. Yair Cohen, a research scientist at the Climate Modeling Alliance at Caltech. Dr. Cohen will speak about ?Combining physics and machine learning in the turbulence-convection parameterization of the CliMA climate model?. Dr. Cohen will be joining us virtually but we will gather in EOA 1044 to participate in the seminar. If you cannot attend in person due to a medical reason or approved work out of town, please contact Allison Wing (awing at fsu.edu) for remote access. Otherwise, we look forward to seeing everyone in 1044! Please join us at 3 PM for refreshments prior to the beginning of the talk at 3:15 PM. Graduate students are invited to participate in a student-only Q&A with the speaker at 2:15 PM in EOA 6067. This is a great opportunity to meet the speaker and discuss science and work/life/career topics in an informal setting. Dr. Cohen is available for other virtual meetings between 8 - 11 AM on Thursday; please contact Allison Wing (awing at fsu.edu) if you would like to meet with him during that time. If you would like to meet with Dr. Cohen at a different time next week, please get in touch with him directly. DATE: Thursday September 29 TIME: Refreshments at 3 PM, Talk 3:15 PM - 4:15 PM. LOCATION: EOA 1044 (speaker remote) SPEAKER: Dr. Yair Cohen TITLE: Combining physics and machine learning in the turbulence-convection parameterization of the CliMA climate model ABSTRACT: The representation of turbulence and convection at the subgrid scale of climate models by various parameterization schemes is one of the largest sources of model uncertainty in long term climate predictions. The crux of these parameterization schemes is the formulation of closure functions for processes that cannot be observed or simulated in high resolution models. In this talk I will present a hybrid approach that combines a physics based parameterization scheme with physical and machine learning (ML) closures. Such a hybrid approach cannot be trained using backpropagation typical to neutral networks, as this requires partial derivatives of the physics+ML setup in parameter space. Instead we use a gradient free (ensemble) method to train physics+ML setup from high resolution LES data. The hybrid approach ensures conservation properties, allows for straightforward interpretability of its data driven components and reduces the degrees of freedom to allow us to train from spares data. The physical model is based on the extended Eddy Diffusivity/Mass Flux (EDMF) scheme, derived by a systematic coarse-graining of the equations of motion and includes subgrid scale memory and prognostic equations for first and second moments. The closures for this scheme combine physical arguments with nondimensional functional forms that can be learned from data using various ML architectures. Our parameterization, in a single column of a climate models, reproduces well the corresponding LES of the full spectrum of boundary layer and turbulent motions: from polar boundary layers (vertical scale of 300m), through the stratocumulus-topped boundary layer (vertical scale of 1km), shallow convection (vertical scale of 3km), and deep convection (vertical scale of 15km). Furthermore, using ML closures we show that a hybrid model is able to extrapolate by training on current climate simulations to a validation set from 4K climate warming scenario. Cheers, Allison On behalf of the MET Seminar Committee ?????????????????? Allison Wing, Ph.D. Associate Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: 2022_Fall_MET_seminar_09_29_Yair_Cohen.pdf Type: application/pdf Size: 548285 bytes Desc: 2022_Fall_MET_seminar_09_29_Yair_Cohen.pdf URL: From eoas-seminar at lists.fsu.edu Fri Sep 23 09:51:16 2022 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 23 Sep 2022 13:51:16 +0000 Subject: [Eoas-seminar] MET Seminar Thursday September 29 3:00-4:15 PM: Dr. Yair Cohen (Climate Modeling Alliance, Caltech) In-Reply-To: References: Message-ID: Thursday September 29, that is :-) ?????????????????? Allison Wing, Ph.D. Associate Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu On Sep 23, 2022, at 9:50 AM, eoas-seminar--- via Eoas-seminar > wrote: Dear all, Please join us for our next Meteorology Seminar, which will be given next Thursday September 29 by Dr. Yair Cohen, a research scientist at the Climate Modeling Alliance at Caltech. Dr. Cohen will speak about ?Combining physics and machine learning in the turbulence-convection parameterization of the CliMA climate model?. Dr. Cohen will be joining us virtually but we will gather in EOA 1044 to participate in the seminar. If you cannot attend in person due to a medical reason or approved work out of town, please contact Allison Wing (awing at fsu.edu) for remote access. Otherwise, we look forward to seeing everyone in 1044! Please join us at 3 PM for refreshments prior to the beginning of the talk at 3:15 PM. Graduate students are invited to participate in a student-only Q&A with the speaker at 2:15 PM in EOA 6067. This is a great opportunity to meet the speaker and discuss science and work/life/career topics in an informal setting. Dr. Cohen is available for other virtual meetings between 8 - 11 AM on Thursday; please contact Allison Wing (awing at fsu.edu) if you would like to meet with him during that time. If you would like to meet with Dr. Cohen at a different time next week, please get in touch with him directly. DATE: Thursday September 29 TIME: Refreshments at 3 PM, Talk 3:15 PM - 4:15 PM. LOCATION: EOA 1044 (speaker remote) SPEAKER: Dr. Yair Cohen TITLE: Combining physics and machine learning in the turbulence-convection parameterization of the CliMA climate model ABSTRACT: The representation of turbulence and convection at the subgrid scale of climate models by various parameterization schemes is one of the largest sources of model uncertainty in long term climate predictions. The crux of these parameterization schemes is the formulation of closure functions for processes that cannot be observed or simulated in high resolution models. In this talk I will present a hybrid approach that combines a physics based parameterization scheme with physical and machine learning (ML) closures. Such a hybrid approach cannot be trained using backpropagation typical to neutral networks, as this requires partial derivatives of the physics+ML setup in parameter space. Instead we use a gradient free (ensemble) method to train physics+ML setup from high resolution LES data. The hybrid approach ensures conservation properties, allows for straightforward interpretability of its data driven components and reduces the degrees of freedom to allow us to train from spares data. The physical model is based on the extended Eddy Diffusivity/Mass Flux (EDMF) scheme, derived by a systematic coarse-graining of the equations of motion and includes subgrid scale memory and prognostic equations for first and second moments. The closures for this scheme combine physical arguments with nondimensional functional forms that can be learned from data using various ML architectures. Our parameterization, in a single column of a climate models, reproduces well the corresponding LES of the full spectrum of boundary layer and turbulent motions: from polar boundary layers (vertical scale of 300m), through the stratocumulus-topped boundary layer (vertical scale of 1km), shallow convection (vertical scale of 3km), and deep convection (vertical scale of 15km). Furthermore, using ML closures we show that a hybrid model is able to extrapolate by training on current climate simulations to a validation set from 4K climate warming scenario. Cheers, Allison On behalf of the MET Seminar Committee ?????????????????? Allison Wing, Ph.D. Associate Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu <2022_Fall_MET_seminar_09_29_Yair_Cohen.pdf>_______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Fri Sep 23 14:05:26 2022 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 23 Sep 2022 18:05:26 +0000 Subject: [Eoas-seminar] [Seminar-announce] Scientific Computing Colloquium with Ming Ye Message-ID: "Identification of Important and Influential Processes of Complex Environmental Systems under Model and Parametric Uncertainty" Ming Ye Department of Earth, Ocean, and Atmospheric Science Florida State University NOTE: Please feel free to forward/share this invitation with other groups/disciplines that might be interested in this talk/topic. All are welcome to attend. https://fsu.zoom.us/j/94273595552 Meeting # 942 7359 5552 Sep 29, 2022, Schedule: * 3:30 to 4:30 PM Eastern Time (US and Canada) Colloquium - Attend F2F (in 499 DSL) or Virtually (via Zoom) Abstract: Sensitivity analysis is a vital tool in the modeling community to identify important and influential parameters for model development and improvement, and variance-based global sensitivity analysis has gained popularity. However, the conventional global sensitivity indices are defined with consideration of only parametric uncertainty, but not model uncertainty that arises when a system?s process can be represented by multiple conceptual-mathematical models. Multi-model sensitivity analysis has gained increasing attention for advancing our understanding of complex Earth and environmental systems with interacting physical, chemical, and biological processes. Based on a hierarchical structure of parameter and model uncertainties and on recently developed techniques of model averaging, we developed two new process sensitivity indices for identifying important and influential processes. The indices are designed to answer the following question: how can we identify important and influential processes for the explicitly proposed process models and the probabilistically defined random parameters? A computationally efficient algorithm was also developed to reduce computational cost for the indices. To further reduce computational cost, we developed a new global sensitivity analysis method, called multi-model difference-based sensitivity analysis (MMDS), which can screen noninfluential system process from further investigation such as model calibration. In this seminar, I will present the three methods in a context of environmental modeling with numerical implementation and evaluation. The methods are mathematically and computationally general, and can be applied to a wide range of problems of numerical modeling. -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 4606 bytes Desc: not available URL: -------------- next part -------------- _______________________________________________ SC-Seminar-announce mailing list SC-Seminar-announce at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/sc-seminar-announce From eoas-seminar at lists.fsu.edu Mon Sep 26 14:31:03 2022 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 26 Sep 2022 14:31:03 -0400 Subject: [Eoas-seminar] Call for speakers for the EOAS Spring Colloquium Series Message-ID: Dear Students, Postdocs and Colleagues, The EOAS Colloquium committee requests your speaker nominations for the Spring 2023 Colloquium series. Please email any member of the Colloquium committee (Baco-Taylor, Ye, and Wu) with your suggestions for speakers. Students and postdocs are also encouraged to make nominations. We look forward to hearing from you, Amy on behalf of the committee -- Amy Baco-Taylor, PhD Professor Earth, Ocean, and Atmospheric Sciences Florida State University (850) 645-1547 abacotaylor at fsu.edu From eoas-seminar at lists.fsu.edu Mon Sep 26 16:53:32 2022 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 26 Sep 2022 20:53:32 +0000 Subject: [Eoas-seminar] MET Seminar Thursday September 29 3:00-4:15 PM: Dr. Yair Cohen (Climate Modeling Alliance, Caltech) In-Reply-To: References: Message-ID: Since the university will be closed this Thursday due to Hurricane Ian, this week's MET seminar will be postponed until a later date (TBD). -------------------------------------------- Allison A. Wing, Ph.D. Associate Professor Department of Earth, Ocean, and Atmospheric Science Florida State University awing at fsu.edu On Sep 23, 2022, at 9:51 AM, eoas-seminar--- via Eoas-seminar > wrote: Thursday September 29, that is :-) ?????????????????? Allison Wing, Ph.D. Associate Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu On Sep 23, 2022, at 9:50 AM, eoas-seminar--- via Eoas-seminar > wrote: Dear all, Please join us for our next Meteorology Seminar, which will be given next Thursday September 29 by Dr. Yair Cohen, a research scientist at the Climate Modeling Alliance at Caltech. Dr. Cohen will speak about ?Combining physics and machine learning in the turbulence-convection parameterization of the CliMA climate model?. Dr. Cohen will be joining us virtually but we will gather in EOA 1044 to participate in the seminar. If you cannot attend in person due to a medical reason or approved work out of town, please contact Allison Wing (awing at fsu.edu) for remote access. Otherwise, we look forward to seeing everyone in 1044! Please join us at 3 PM for refreshments prior to the beginning of the talk at 3:15 PM. Graduate students are invited to participate in a student-only Q&A with the speaker at 2:15 PM in EOA 6067. This is a great opportunity to meet the speaker and discuss science and work/life/career topics in an informal setting. Dr. Cohen is available for other virtual meetings between 8 - 11 AM on Thursday; please contact Allison Wing (awing at fsu.edu) if you would like to meet with him during that time. If you would like to meet with Dr. Cohen at a different time next week, please get in touch with him directly. DATE: Thursday September 29 TIME: Refreshments at 3 PM, Talk 3:15 PM - 4:15 PM. LOCATION: EOA 1044 (speaker remote) SPEAKER: Dr. Yair Cohen TITLE: Combining physics and machine learning in the turbulence-convection parameterization of the CliMA climate model ABSTRACT: The representation of turbulence and convection at the subgrid scale of climate models by various parameterization schemes is one of the largest sources of model uncertainty in long term climate predictions. The crux of these parameterization schemes is the formulation of closure functions for processes that cannot be observed or simulated in high resolution models. In this talk I will present a hybrid approach that combines a physics based parameterization scheme with physical and machine learning (ML) closures. Such a hybrid approach cannot be trained using backpropagation typical to neutral networks, as this requires partial derivatives of the physics+ML setup in parameter space. Instead we use a gradient free (ensemble) method to train physics+ML setup from high resolution LES data. The hybrid approach ensures conservation properties, allows for straightforward interpretability of its data driven components and reduces the degrees of freedom to allow us to train from spares data. The physical model is based on the extended Eddy Diffusivity/Mass Flux (EDMF) scheme, derived by a systematic coarse-graining of the equations of motion and includes subgrid scale memory and prognostic equations for first and second moments. The closures for this scheme combine physical arguments with nondimensional functional forms that can be learned from data using various ML architectures. Our parameterization, in a single column of a climate models, reproduces well the corresponding LES of the full spectrum of boundary layer and turbulent motions: from polar boundary layers (vertical scale of 300m), through the stratocumulus-topped boundary layer (vertical scale of 1km), shallow convection (vertical scale of 3km), and deep convection (vertical scale of 15km). Furthermore, using ML closures we show that a hybrid model is able to extrapolate by training on current climate simulations to a validation set from 4K climate warming scenario. Cheers, Allison On behalf of the MET Seminar Committee ?????????????????? Allison Wing, Ph.D. Associate Professor Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu <2022_Fall_MET_seminar_09_29_Yair_Cohen.pdf>_______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar _______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Mon Sep 26 22:46:27 2022 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 27 Sep 2022 02:46:27 +0000 Subject: [Eoas-seminar] MET Seminar Thursday *October 6* 3:00-4:15 PM: Dr. Yair Cohen (Climate Modeling Alliance, Caltech) In-Reply-To: References: Message-ID: The MET seminar given by Dr. Yair Cohen has been rescheduled to *next Thursday, October 6*. DATE: Thursday October 6 STUDENT Q&A: 2:15 PM, EOA 6067 SEMINAR TIME: Refreshments at 3 PM, Talk 3:15 PM - 4:15 PM. SEMINAR LOCATION: EOA 1044 (speaker remote) SPEAKER: Dr. Yair Cohen TITLE: Combining physics and machine learning in the turbulence-convection parameterization of the CliMA climate model ABSTRACT: The representation of turbulence and convection at the subgrid scale of climate models by various parameterization schemes is one of the largest sources of model uncertainty in long term climate predictions. The crux of these parameterization schemes is the formulation of closure functions for processes that cannot be observed or simulated in high resolution models. In this talk I will present a hybrid approach that combines a physics based parameterization scheme with physical and machine learning (ML) closures. Such a hybrid approach cannot be trained using backpropagation typical to neutral networks, as this requires partial derivatives of the physics+ML setup in parameter space. Instead we use a gradient free (ensemble) method to train physics+ML setup from high resolution LES data. The hybrid approach ensures conservation properties, allows for straightforward interpretability of its data driven components and reduces the degrees of freedom to allow us to train from spares data. The physical model is based on the extended Eddy Diffusivity/Mass Flux (EDMF) scheme, derived by a systematic coarse-graining of the equations of motion and includes subgrid scale memory and prognostic equations for first and second moments. The closures for this scheme combine physical arguments with nondimensional functional forms that can be learned from data using various ML architectures. Our parameterization, in a single column of a climate models, reproduces well the corresponding LES of the full spectrum of boundary layer and turbulent motions: from polar boundary layers (vertical scale of 300m), through the stratocumulus-topped boundary layer (vertical scale of 1km), shallow convection (vertical scale of 3km), and deep convection (vertical scale of 15km). Furthermore, using ML closures we show that a hybrid model is able to extrapolate by training on current climate simulations to a validation set from 4K climate warming scenario. -------------------------------------------- Allison A. Wing, Ph.D. Associate Professor Department of Earth, Ocean, and Atmospheric Science Florida State University awing at fsu.edu -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Tue Sep 27 09:46:50 2022 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 27 Sep 2022 09:46:50 -0400 Subject: [Eoas-seminar] EOAS Colloquium Canceled for Friday Message-ID: Given the university closure on Thursday and Friday this week, the EOAS Colloquium for Friday is canceled.? The speaker, Dr Richard Bono, will be rescheduled for Spring semester. From eoas-seminar at lists.fsu.edu Tue Sep 27 10:28:51 2022 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 27 Sep 2022 14:28:51 +0000 Subject: [Eoas-seminar] [Seminar-announce] Canceled: Scientific Computing Colloquium with Ming Ye Message-ID: Canceled due to Hurricane Ian. -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 9850 bytes Desc: not available URL: -------------- next part -------------- _______________________________________________ SC-Seminar-announce mailing list SC-Seminar-announce at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/sc-seminar-announce From eoas-seminar at lists.fsu.edu Tue Sep 27 13:50:13 2022 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 27 Sep 2022 13:50:13 -0400 Subject: [Eoas-seminar] COAPS Short Seminar Series - Monday Sept. 12th at 11:00AM - revised Message-ID: These talks are usually scheduled for the first Monday of each month. The first talk normally starts at 11:00AM.? 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 Oct. 3rd: Kyra Britton: Application of High-Resolution Winter Seasonal Climate Forecasts for Streamflow Prediction in Central Florida Description: Current global climate models typically run at a resolution of 100 km, which is too coarse to adequately resolve the coastlines and watersheds of Florida. Previous researchers created a reforecast of five environmental variables for a period of 22 years by dynamically downscaling a global model, thus giving more accurate regional data for temperature, evaporation, surface and root level soil moisture, and surface temperature. In this project, I attempt to define the relationship between these five reforecasted variables and the streamflow of several watersheds in Central Florida using statistical techniques, with the end goal of creating a streamflow forecast that will assist water utility managers in decision making Xiaobiao Xu: Importance of vertical resolution in an isopycnic ocean model Description: In contrast to the large volume of studies focused on the importance of the horizontal resolution in oceanic general circulation models, the importance of vertical resolution has been largely overlooked. This study documents the sensitivity of modeled large-scale circulation to its vertical resolution used in an isopycnic model, at two horizontal resolutions of 1/12? and 1/50?, respectively. The results show that (1) at 1/12?, the large-scale circulation is not very sensitive to its vertical resolution and the number of layers required to obtain a reliable large-scale circulation in isopycnic model is less than that in a level model. (2) when the horizontal resolution is increased from eddying (1/12?) to submesocale eddy enabling (1/50?), the sensitivity of model solution to vertical resolution varies and the vertical resolution needs to be increased accordingly. Mark Bourassa (and Jackie May): Importance of Resolution in Current-Related Air-Sea Coupling The Navy's coupled ocean/atmosphere model is used to show that model resolution impacts the sign of the vorticity of surface winds.? Physics contributing to the model's boundary-layer vorticity is examined to interpret this result. The coupling between currents and wind stress will be reviewed as part of this explanation, then extended to include vorticity. Modeling results are used to show the impacts of the related changes in atmospheric boundary-layer processes. Nov. 7th Joanna Rodgers: TBA Tony Freveletti: TBA TBA:TBA Dec. 5th Carly Narotsky: TBA TBA: TBA Shawn Smith: The MarineFlux project -------------- next part -------------- An HTML attachment was scrubbed... URL: