From eoas-seminar at lists.fsu.edu Fri Mar 1 09:27:09 2024 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 1 Mar 2024 14:27:09 +0000 Subject: [Eoas-seminar] TODAY EOAS Colloquium - Prof. Suzana Camargo (Lamont-Doherty Earth Observatory, Columbia University) In-Reply-To: References: Message-ID: Dear all, This is a reminder of today?s EOAS colloquium, which will be given by Prof. Suzana Camargo (Lamont-Doherty Earth Observatory, Columbia University) on "Tropical Cyclone Projections using Environmental Proxies and Statistical-Dynamical Downscaling?. Talk at 3 PM in 1050. See you there! Cheers, Allison ?????????????????? Allison Wing, Ph.D. Werner A. and Shirley B. Baum Professor Associate Professor, Department of Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu On Feb 23, 2024, at 8:00 AM, eoas-seminar--- via Eoas-seminar > wrote: Dear all, Please join us next Friday March 1 at 3 PM for the EOAS Colloquium, which will be given by Prof. Suzana Camargo (Lamont-Doherty Earth Observatory, Columbia University) on "Tropical Cyclone Projections using Environmental Proxies and Statistical-Dynamical Downscaling? (abstract below). Prof. Camargo will be joining us in person and is available for meetings on Friday. Please contact Allison Wing (awing at fsu.edu) if you would like to meet with her. She is one of the world?s leading experts in tropical cyclones and climate variability and change. DATE: Friday March 1 SEMINAR TIME: 3 - 4 PM SEMINAR LOCATION: EOA 1050 (Speaker in person, Zoom link available on request) SPEAKER: Prof. Suzana Camargo TITLE: Tropical Cyclone Projections using Environmental Proxies and Statistical-Dynamical Downscaling ABSTRACT: In the first part of this talk, I?ll give an overview of the current state-of-the art knowledge of the influence of anthropogenic climate change on tropical cyclones, based on a recently published review paper. In the second part of the talk, I?ll describe the research that the Columbia group is doing on this topic, in particular, projections of the relationship between tropical cyclones and the El Ni?o-Southern Oscillation (ENSO), the role of ENSO diversity on these projections and how the current tropical Pacific trends in models can affect these projections. Besides results from CMIP6, a statistical-downscaling model that generates synthetic tropical cyclones from reanalysis and climate models large-scale fields will be presented. I will show the results obtained when downscaling the CMIP6 models and what we can learn from them. We look forward to seeing you there! Cheers, Allison ?????????????????? Allison Wing, Ph.D. Werner A. and Shirley B. Baum Professor Associate Professor, Department of Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu _______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Fri Mar 1 14:43:34 2024 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 1 Mar 2024 14:43:34 -0500 Subject: [Eoas-seminar] Fwd: Reminder for defense In-Reply-To: References: Message-ID: -------- Forwarded Message -------- Subject: Reminder for defense Date: Fri, 1 Mar 2024 13:44:30 -0500 From: Markus Huettel To: Kelly Hirai Hi everyone, This is a reminder that Aaron Ridall will defend his PhD dissertation ?Ecosystem Effects and Magnitude of Microplastics Pollution in St. Andrew Bay, Florida? on Monday 4 March, 2PM in King 2057. Hope to see you then, but if you can?t make it, here is the zoom link to join online (public, open session for the defense): https://fsu.zoom.us/j/99405736158 Meeting ID: 994 0573 6158 Best wishes Jeroen Ingels Markus Huettel Department of Earth, Ocean and Atmospheric Science Florida State University 1011 Academic Way, Tallahassee, FL, 32306-4520 USA Phone: (850) 645-1394 Email:mhuettel at fsu.edu -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Sat Mar 2 17:31:33 2024 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Sat, 2 Mar 2024 22:31:33 +0000 Subject: [Eoas-seminar] COAPS Short Seminar Series Message-ID: COAPS Short Seminar Series 11:00 AM Marsh 4th Attend F2F (in 255 Research A) or Virtually (via Zoom) https://fsu.zoom.us/j/92268262553 Meeting ID: 922 6826 2553 Talks are 12 minutes long with an additional 8 minutes for questions. Systematic drifts of Rossby wave breaking in medium-range forecasts By Thea Xue Description: This research investigates the systematic drifts of Rossby wave breaking in medium-range forecasts. The findings reveal a consistent underestimation in the forecasted global zonal breaking extent for global cyclonic wave breakings (CWB) over a lead time of 14 days, with a comparatively lesser tendency for such drift in anticyclonic wave breakings (AWBs). Regional examinations highlight a significant underestimation in cyclonic breaking extent over the Pacific compared to the Atlantic, while forecasts tend to overestimate anticyclonic breaking extent over Eurasia and underestimate them over western North America. Further investigation into CWB over the Pacific region suggests a potential connection between the underestimation of CWB and the underestimated 200hPa jet shear. Deciphering Winter Seasonal Predictions for Florida: Insights from High-resolution Dynamic Downscaling By C B Jayasankar Description: This study illustrates the value of experimental seasonal CLImate Forecasts for Florida (CLIFF), which is a high resolution (10-km grid), 30 ensemble member dynamic downscaling from a corresponding 5 ensemble member global winter seasonal forecasts over Florida through extensive verification of its seasonal precipitation anomalies. The winter seasonal rainfall anomalies in Florida are often regarded as the sentinel site for the strong influence of ENSO teleconnections. However, we find it is true only for warm (El Ni?o) years when seasonal rainfall anomalies across Florida are more homogenous and are well above seasonal mean climatology. But in many cold (La Ni?a) and ENSO-neutral years, the seasonal rainfall anomalies are more heterogeneous. This feature is verified in CLIFF. We attribute this skill to the spatial resolution and the ensemble spread of CLIFF. In other words, CLIFF by way of its 10-km horizontal resolution and 30 ensemble members can permit the internal variations, which we deem is necessary to resolve the uncertainties of the seasonal evolution of winter seasonal rain in the absence of strong external forcing. CLIFF can provide such useful seasonal forecasts at the scale of the Water Management Districts and watersheds of major utilities in Florida that are not otherwise available from the Climate Prediction Center (CPC) seasonal outlooks. 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. -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 4765 bytes Desc: not available URL: From eoas-seminar at lists.fsu.edu Sun Mar 3 10:19:23 2024 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Sun, 3 Mar 2024 15:19:23 +0000 Subject: [Eoas-seminar] [Seminar-announce] Scientific Computing Colloquium with Elissa Bell Message-ID: "Advancing COVID-19 Vaccine Design Through Immunoinformatics" Elissa Bell Department of Biological Science Florida State University 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. NOTE: In-person attendance is requested. Zoom access is intended for external (non-departmental) participants only. https://fsu.zoom.us/j/94273595552 Meeting # 942 7359 5552 ? Colloquium recordings will be made available here, https://www.sc.fsu.edu/colloquium Wednesday, Mar 6, 2024, Schedule: * 3:00 to 3:30 PM Eastern Time (US and Canada) ? Nespresso & Teatime - 417 DSL Commons * 3:30 to 4:30 PM Eastern Time (US and Canada) ? Colloquium - 499 DSL Seminar Room Abstract: Computational biology has shown great promise in playing a vital role in rapid vaccine development. In this talk, I will highlight the innovative use of immunoinformatics in designing multi-epitope vaccine models against SARS-CoV-2, the virus responsible for COVID-19. The papers I will discuss show how to predict antigenic epitopes from vital COVID-19 proteins using existing computational techniques and software. Essential tools in this process include programs for identifying promising B and T-cell epitopes, molecular docking, and simulations to see vaccine stability. These predictions help us understand how these epitopes interact with the immune system and elicit the immune response necessary for a successful vaccine. This immunoinformatic approach can accelerate the transition from theoretical models to practical vaccine candidates. Additional colloquium details can be found here, https://www.sc.fsu.edu/news-and-events/colloquium/1772-colloquium-with-elissa-bell-2024-03-06 -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 3750 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 Mar 15 12:17:52 2024 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 15 Mar 2024 16:17:52 +0000 Subject: [Eoas-seminar] [Seminar-announce] Scientific Computing Colloquium with Francis X. Giraldo Message-ID: "A performance study of horizontally explicit vertically implicit (HEVI) time-integrators for non-hydrostatic atmospheric models" Francis X. Giraldo Department of Applied Mathematics Naval Postgraduate School 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. NOTE: In-person attendance is requested. Zoom access is intended for external (non-departmental) participants only. https://fsu.zoom.us/j/94273595552 Meeting # 942 7359 5552 Colloquium recordings will be made available here, https://www.sc.fsu.edu/colloquium Wednesday, Mar 20, 2024, Schedule: * 3:00 to 3:30 PM Eastern Time (US and Canada) Nespresso & Teatime - 417 DSL Commons * 3:30 to 4:30 PM Eastern Time (US and Canada) Colloquium - 499 DSL Seminar Room Abstract: I will begin the talk with a motivation for the challenges faced in weather and climate modeling and then describe why we need special time-integration methods in order to evolve the governing equations forward in time. I will spend some time on describing the element-based Galerkin (EBG) methods that we use in our models and how they are used in order to simplify the application of HEVI time-integrators regardless of whether we are solving regional or global models. This talk is motivated by my group and collaborators? research in building operational weather prediction models as well as advancing the field for application in climate, space weather, and ocean dynamics. I will end my talk showing some examples of why I believe that EBG methods are ideally suited for ocean modeling. Additional colloquium details can be found here, https://www.sc.fsu.edu/news-and-events/colloquium/1774-colloquium-with-francis-x-giraldol-2024-03-20 -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 4720 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 Mar 15 14:59:18 2024 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 15 Mar 2024 14:59:18 -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. *_20 March, rm 6042 EOA, 9 AM to 12 PM_* OCE Dissertation Dfns--Armando Barsante Santos Title:? Integrating Research into Conservation:? Using Satellite Telemetry and Population Monitoring to Inform the Management of Hawksbill Turtles in Brazil? [Major Prof, Dr. M. Fuentes] Zoom ID: https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Ffsu.zoom.us%2Fj%2F93767911358&data=05%7C02%7Ceoas-seminar%40lists.fsu.edu%7Cbab916f36ca04230e0c008dc452205a5%7Ca36450ebdb0642a78d1b026719f701e3%7C0%7C0%7C638461259616465248%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=BHIC54nEFbakKn4JYpRk3HfeXUfeN3xDAmXmt1eHchU%3D&reserved=0 *_21 March, rm 1044 EOA, 3 PM to 5 PM_* MET Thesis Dfns--Jarrett Starr Title:? Using the moist static variance budget to evaluate tropical cyclones in climate models against reanalyses and satellite observations: Model resolution, ocean coupling, and cloud-radiative interaction? [Major Prof, Dr. A. Wing] Zoom ID: https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Ffsu.zoom.us%2Fj%2F93839562277&data=05%7C02%7Ceoas-seminar%40lists.fsu.edu%7Cbab916f36ca04230e0c008dc452205a5%7Ca36450ebdb0642a78d1b026719f701e3%7C0%7C0%7C638461259616465248%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=hwlwQA5NLUIyXPm3VOQd69%2Fzg%2BsNfSW19eutkyGdoVk%3D&reserved=0 *_25 March, rm 3067 EOA, 3 PM to 5 PM_* MET Thesis Dfns--Jonathan Gardner Title:? A Simplified Dynamical Framework for the Great Plains Nocturnal Low-Level Jet and Its Impact on Severe Weather Shear Parameters? [Major Profs, Drs. M. Cai and J. Chagnon] *_29 March, rm B333 MagLab, 3 PM to 5 PM_* GLY Dissertation Dfns--Yin Zhang Title:? Geneses and Geochemical Relationship of Forearc Basaltic Magmas in Cascadia Columbia Transect, Cascades Arc? [Major Prof, Dr. V. Salters] Zoom ID: https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Ffsu.zoom.us%2Fj%2F9238352410%3Fpwd%3DQ0tuaE1CNGU5aTRhYURsNjJzU3lMZz09&data=05%7C02%7Ceoas-seminar%40lists.fsu.edu%7Cbab916f36ca04230e0c008dc452205a5%7Ca36450ebdb0642a78d1b026719f701e3%7C0%7C0%7C638461259616465248%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=T0TBpD9fqNiXuG7SDVexIDpc%2BTdSgw5rjqAirNxZsNE%3D&reserved=0 -- *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 Mon Mar 18 17:12:34 2024 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 18 Mar 2024 21:12:34 +0000 Subject: [Eoas-seminar] [Seminar-announce] Special Seminar with Elizabeth A. Carlson Message-ID: "You Will Be Assimilated: Incorporating Data for Insights into Physics & Mathematics" Elizabeth A. Carlson von Karman Instructor in Computing and Mathematical Sciences California Institute of Technology 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. NOTE: In-person attendance is requested. Zoom access is intended for external (non-departmental) participants only. https://fsu.zoom.us/j/94273595552 Meeting # 942 7359 5552 ? Colloquium recordings will be made available here, https://www.sc.fsu.edu/colloquium Thursday, Mar 21, 2024, Schedule: * 3:00 to 3:30 PM Eastern Time (US and Canada) ? Nespresso & Teatime - 417 DSL Commons * 3:30 to 4:30 PM Eastern Time (US and Canada) ? Colloquium - 499 DSL Seminar Room Abstract: One of the challenges of the accurate simulation of turbulent flows is that initial data is often incomplete. Data assimilation circumvents this issue by continually incorporating the observed data into the model. A continuous data assimilation approach known as the Azouani-Olson-Titi (AOT) algorithm introduced a feedback control term to the 2D incompressible Navier-Stokes equations (NSE) in order to incorporate sparse measurements. The solution to the AOT algorithm applied to the 2D NSE was proven to converge exponentially to the true solution of the 2D NSE with respect to the given initial data. In this presentation, we will discuss history of data assimilation for different methods, with an emphasis on the continuous data assimilation algorithm that was used to prove the convergence in the perfect data setting, present various robustness results of the continuous data assimilation algorithm, and discuss how continuous data assimilation can be used to identify and correct model error. We will focus on the implementation of the AOT algorithm in the Model for Prediction Across Scales - Ocean model and present a proof of the convergence of a nonlinear version of the AOT algorithm in the setting of the 2D NSE, where for a portion of time the convergence rate is proven to be double exponential. Additional colloquium details can be found here, https://www.sc.fsu.edu/news-and-events/colloquium/1775-special-seminar-with-elizabeth-a-carlson-2024-03-21 -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 5259 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 Sun Mar 24 13:30:43 2024 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Sun, 24 Mar 2024 17:30:43 +0000 Subject: [Eoas-seminar] [Seminar-announce] Scientific Computing Colloquium with Maciej Lisicki Message-ID: "Culinary Fluid Mechanics" Maciej Lisicki Institute of Theoretical Physics, Department of Physics, Warsaw University Feel free to share this invitation with other groups/disciplines interested in this talk/topic. All are welcome to attend. NOTE: In-person attendance is requested. Zoom access is intended for external (non-departmental) participants only. https://fsu.zoom.us/j/94273595552 Meeting # 942 7359 5552 ? Colloquium recordings will be made available here, https://www.sc.fsu.edu/colloquium Wednesday, Mar 27, 2024, Schedule: * 3:00 to 3:30 PM Eastern Time (US and Canada) ? Nespresso & Teatime - 417 DSL Commons * 3:30 to 4:30 PM Eastern Time (US and Canada) ? Colloquium - 499 DSL Seminar Room Abstract: Lab closed? Head to the kitchen! Particularly during the recent pandemic, the kitchen offered a rich laboratory environment where diverse flows are omnipresent and widely accessible. The surprising phenomena emerging in the kitchen inspire fundamental research, which in turn has improved gastronomy ever since. In this special research setting, we deal with high-interface materials and thin films, we mix fluids to make emulsions, we work with bubbles, highly viscous and non-Newtonian materials, we explore heat transfer in fluids, we stabilize foam structure in bread and beverages, and we produce novel food from basic ingredients. In this talk, I will present a curated selection of kitchen phenomena in which hydrodynamics plays a crucial role and show how the surprising phenomena that arise in the kitchen are leading to new discoveries across the disciplines. I will also discuss how kitchen flows can be used as a powerful tool in physics education. Additional colloquium details can be found here, https://www.sc.fsu.edu/news-and-events/colloquium/1777-colloquium-with-maciej-lisicki-2024-03-27 -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 4768 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 Mar 25 07:27:59 2024 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 25 Mar 2024 11:27:59 +0000 Subject: [Eoas-seminar] Seminar Tuesday March 26 at 3pm on "Observing the oceans with sustained underwater glider networks" Message-ID: Please join us for a Tuesday 3pm Seminar in Room 1050 by PO faculty candidate Dr. Alice Ren of Woods Hole Oceanographic Institution Title and abstract below. Observing the oceans with sustained underwater glider networks Observing three-dimensional ocean processes on horizontal scales less than 300 km for extended periods of time is a challenge. Satellite observations of the roughly 360 million square kilometers of ocean surface can measure changes at approaching the synoptic time scale, and a collection of drifting autonomous instruments (Argo floats) provides depth data with roughly 300 km x 300 km resolution. With a network of underwater gliders, sustained observation of a region can be achieved, as is presented through examples from the California Underwater Glider Network (CUGN) in the California Current System and gliders in the Gulf Stream. Glider observations of 13+ and 8+ years in the two regions describe the ocean down to 500 m and 1000 m respectively and can track mesoscale (around 100 km) to large-scale (300 km and greater) horizontal variability on intra-annual to multi-year timescales. In the California Current System, the annual cycle of oxygen gas exchange at the ocean surface, interannual temperature and salinity extremes, and the propagation of subthermocline eddies offshore are described. In the Gulf Stream, the annual cycle of mixed layer temperature can be observed as well as, after combining glider and Argo float data, decadal-scale warming of ~1?C over the past 20 years. Future research could include estimating ocean horizontal eddy diffusivities and processes at ocean boundaries including surface gas exchange and flow past topographic features. --- Eric Chassignet Professor and Director Center for Ocean-Atmospheric Prediction Studies (COAPS) Florida State University 2000 Levy Avenue, Building A, Suite 292 P.O. Box 3062741 Tallahassee, FL 32306-2741 Office : (1) 850-645-7288 COAPS : (1) 850-644-3846 Cell : (1) 850-524-0033 (urgent matters only) FAX : (1) 850-644-4841 E-mail : echassignet at fsu.edu http://www.coaps.fsu.edu -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Mon Mar 25 12:43:27 2024 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 25 Mar 2024 16:43:27 +0000 Subject: [Eoas-seminar] COAPS Short Seminar Series Message-ID: COAPS Short Seminar Series 11:00 AM April 1st Attend F2F (in 255 Research A) or Virtually (via Zoom) https://fsu.zoom.us/j/92268262553 Meeting ID: 922 6826 2553 Talks are 12 minutes long with an additional 8 minutes for questions. Observed Variability of Upwelling Filaments in the Northern Arabian Sea during Summer Monsoons By Ethan Wright Cold filaments of upwelled water form off the coasts of Oman and Yemen during the Indian summer monsoon and strongly contribute to cross-shelf exchanges of water mass properties and nutrients. The largest of the cold filaments typically form around the northern periphery of persistent anticyclonic eddies located off the coasts during the summer upwelling season. A novel filament detection algorithm with satellite sea surface temperature imagery is used to analyze the seasonal formation and interannual variability of upwelling filaments along the coasts of Arabia during summer monsoons. In particular, mesoscale eddy patterns associated with the development large cold filaments are analyzed using a combination of satellite altimetry and sea surface temperature products, providing insight into the role of eddies in cross-shelf exchanges of water in the Northern Arabian Sea. The changing annual cycle of SST By Fucheng Yang Description: In recent decades, many research efforts focused on global climate change, multidecadal, decadal, interannual variability, and the increasing extreme events of sea surface temperature. In contrast, the continuous evolution of the reference frame, the annual cycle of SST used to quantify the aforementioned variability and changes, has long been overlooked, resulting in difficulties in understanding the underlying physical mechanisms responsible for these variability and changes. In this study, we strive to bridge this gap on the phase changes in SST annual cycle. By devising a running correlation-based method, we can now quantify the non-sinusoidal shape of the evolving SST annual cycle, such as the advancing or delaying of summer and winter peaking times. It is revealed that the varying phases of summer or winter are more closely linked to multidecadal SST variability than to long-term climate change. Both the systematic shift of the phase and alterations in the annual cycle shape contribute to the phase changes, which explain 0.4~1.0 ?C of monthly SST anomaly with respect to the climatological annual cycle in a multidecadal timescale. Furthermore, it is evident that the SST phases in historical simulations are not well captured and exhibit stronger variation compared with observation. Introduction to Dynamic Mode Decomposition (DMD) By Takaya Uchida DMD is a method often applied to identify spatial modes that may be hidden in the dataset. There are similarities to Empirical Orthogonal Functions (EOFs). I will a brief overview of DMDs and provide a in-person demonstration on the utility of DMDs applied to toy datasets and observational data.\ 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. -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 5138 bytes Desc: not available URL: From eoas-seminar at lists.fsu.edu Mon Mar 25 14:08:18 2024 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 25 Mar 2024 18:08:18 +0000 Subject: [Eoas-seminar] COAPS Short Seminar Series (update on 3rd talk) Message-ID: COAPS Short Seminar Series 11:00 AM April 1st Attend F2F (in 255 Research A) or Virtually (via Zoom) https://fsu.zoom.us/j/92268262553 Meeting ID: 922 6826 2553 Talks are 12 minutes long with an additional 8 minutes for questions. Observed Variability of Upwelling Filaments in the Northern Arabian Sea during Summer Monsoons By Ethan Wright Cold filaments of upwelled water form off the coasts of Oman and Yemen during the Indian summer monsoon and strongly contribute to cross-shelf exchanges of water mass properties and nutrients. The largest of the cold filaments typically form around the northern periphery of persistent anticyclonic eddies located off the coasts during the summer upwelling season. A novel filament detection algorithm with satellite sea surface temperature imagery is used to analyze the seasonal formation and interannual variability of upwelling filaments along the coasts of Arabia during summer monsoons. In particular, mesoscale eddy patterns associated with the development large cold filaments are analyzed using a combination of satellite altimetry and sea surface temperature products, providing insight into the role of eddies in cross-shelf exchanges of water in the Northern Arabian Sea. The changing annual cycle of SST By Fucheng Yang Description: In recent decades, many research efforts focused on global climate change, multidecadal, decadal, interannual variability, and the increasing extreme events of sea surface temperature. In contrast, the continuous evolution of the reference frame, the annual cycle of SST used to quantify the aforementioned variability and changes, has long been overlooked, resulting in difficulties in understanding the underlying physical mechanisms responsible for these variability and changes. In this study, we strive to bridge this gap on the phase changes in SST annual cycle. By devising a running correlation-based method, we can now quantify the non-sinusoidal shape of the evolving SST annual cycle, such as the advancing or delaying of summer and winter peaking times. It is revealed that the varying phases of summer or winter are more closely linked to multidecadal SST variability than to long-term climate change. Both the systematic shift of the phase and alterations in the annual cycle shape contribute to the phase changes, which explain 0.4~1.0 ?C of monthly SST anomaly with respect to the climatological annual cycle in a multidecadal timescale. Furthermore, it is evident that the SST phases in historical simulations are not well captured and exhibit stronger variation compared with observation. Introduction to Dynamic Mode Decomposition (DMD) By Takaya Uchida With the launch of the SWOT satellite, there is great interest within the oceanographic community to extract surface velocity information from the new altimetry observations with O(1 km) spatial resolution. The fact, however, that the observed altimetry being a superposed signal of geostrophic turbulence and waves complicates the problem. While geostrophy is one of the most practical balances that relate sea-surface height (SSH) to velocity, taking the horizontal gradients of unfiltered SSH observations becomes contaminated by wave signals. One work around has been to exploit the fact that waves are associated with smaller spatial scales and shorter time scales than geostrophic eddies. Namely, filtering the SSH field by band-pass filters in the wavenumber and frequency domain. Despite some success, Fourier transforms are associated with their own problems such as requiring the data to be periodic. Empirical Orthogonal Functions, on the other hand, are excellent at extracting spatial modes of the data but decouples the space-time information. Here, I introduce a relatively novel method coined as Dynamic Mode Decomposition (DMD) that decomposes the data into spatial modes while retaining the phase (i.e. oscillating, growing or decaying in time) information associated with each mode. Conceptually, it can be thought of as applying the band-pass filter in the real space-time domain (instead of the wavenumber-frequency domain). I will provide preliminary results based on toy data and a tidally-forced 1/50 HYCOM simulation about the separated Gulf Stream. 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. ________________________________________________________________________________ Microsoft Teams Need help? Join the meeting now Meeting ID: 265 524 480 781 Passcode: ftyRuf ________________________________ Dial-in by phone +1 850-702-3768,,650035748# United States, Tallahassee Find a local number Phone conference ID: 650 035 748# For organizers: Meeting options | Reset dial-in PIN Org help ________________________________________________________________________________ -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 11112 bytes Desc: not available URL: From eoas-seminar at lists.fsu.edu Tue Mar 26 11:33:04 2024 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 26 Mar 2024 15:33:04 +0000 Subject: [Eoas-seminar] COAPS Short Seminar Series (date updated for calendar) Message-ID: COAPS Short Seminar Series 11:00 AM April 1st Attend F2F (in 255 Research A) or Virtually (via Zoom) https://fsu.zoom.us/j/92268262553 Meeting ID: 922 6826 2553 Talks are 12 minutes long with an additional 8 minutes for questions. Observed Variability of Upwelling Filaments in the Northern Arabian Sea during Summer Monsoons By Ethan Wright Cold filaments of upwelled water form off the coasts of Oman and Yemen during the Indian summer monsoon and strongly contribute to cross-shelf exchanges of water mass properties and nutrients. The largest of the cold filaments typically form around the northern periphery of persistent anticyclonic eddies located off the coasts during the summer upwelling season. A novel filament detection algorithm with satellite sea surface temperature imagery is used to analyze the seasonal formation and interannual variability of upwelling filaments along the coasts of Arabia during summer monsoons. In particular, mesoscale eddy patterns associated with the development large cold filaments are analyzed using a combination of satellite altimetry and sea surface temperature products, providing insight into the role of eddies in cross-shelf exchanges of water in the Northern Arabian Sea. The changing annual cycle of SST By Fucheng Yang Description: In recent decades, many research efforts focused on global climate change, multidecadal, decadal, interannual variability, and the increasing extreme events of sea surface temperature. In contrast, the continuous evolution of the reference frame, the annual cycle of SST used to quantify the aforementioned variability and changes, has long been overlooked, resulting in difficulties in understanding the underlying physical mechanisms responsible for these variability and changes. In this study, we strive to bridge this gap on the phase changes in SST annual cycle. By devising a running correlation-based method, we can now quantify the non-sinusoidal shape of the evolving SST annual cycle, such as the advancing or delaying of summer and winter peaking times. It is revealed that the varying phases of summer or winter are more closely linked to multidecadal SST variability than to long-term climate change. Both the systematic shift of the phase and alterations in the annual cycle shape contribute to the phase changes, which explain 0.4~1.0 ?C of monthly SST anomaly with respect to the climatological annual cycle in a multidecadal timescale. Furthermore, it is evident that the SST phases in historical simulations are not well captured and exhibit stronger variation compared with observation. Introduction to Dynamic Mode Decomposition (DMD) By Takaya Uchida With the launch of the SWOT satellite, there is great interest within the oceanographic community to extract surface velocity information from the new altimetry observations with O(1 km) spatial resolution. The fact, however, that the observed altimetry being a superposed signal of geostrophic turbulence and waves complicates the problem. While geostrophy is one of the most practical balances that relate sea-surface height (SSH) to velocity, taking the horizontal gradients of unfiltered SSH observations becomes contaminated by wave signals. One work around has been to exploit the fact that waves are associated with smaller spatial scales and shorter time scales than geostrophic eddies. Namely, filtering the SSH field by band-pass filters in the wavenumber and frequency domain. Despite some success, Fourier transforms are associated with their own problems such as requiring the data to be periodic. Empirical Orthogonal Functions, on the other hand, are excellent at extracting spatial modes of the data but decouples the space-time information. Here, I introduce a relatively novel method coined as Dynamic Mode Decomposition (DMD) that decomposes the data into spatial modes while retaining the phase (i.e. oscillating, growing or decaying in time) information associated with each mode. Conceptually, it can be thought of as applying the band-pass filter in the real space-time domain (instead of the wavenumber-frequency domain). I will provide preliminary results based on toy data and a tidally-forced 1/50 HYCOM simulation about the separated Gulf Stream. 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. ________________________________________________________________________________ Microsoft Teams Need help? Join the meeting now Meeting ID: 265 524 480 781 Passcode: ftyRuf ________________________________ Dial-in by phone +1 850-702-3768,,650035748# United States, Tallahassee Find a local number Phone conference ID: 650 035 748# For organizers: Meeting options | Reset dial-in PIN Org help ________________________________________________________________________________ -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 11126 bytes Desc: not available URL: From eoas-seminar at lists.fsu.edu Tue Mar 26 12:03:53 2024 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 26 Mar 2024 16:03:53 +0000 Subject: [Eoas-seminar] April 4, 7pm: Arts and Sciences invitation to J. Marshall Shepherd Lecture at IMAX Theater at Challenger Learning Center Message-ID: EOAS Colleagues and Friends, The Dean of the College of Arts and Sciences invites all of EOAS and COAPS (faculty, research scientists, postdocs, students) and EOAS Friends to a special presentation and lecture at the IMAX Theater at the Challenger Learning Center downtown at 7pm on April 4 by FSU Meteorology Alumnus J. Marshall Shepherd. The details of the invitation and how to register for it are at: https://calendar.fsu.edu/event/climate-expert-and-fsu-alumnus-j-marshall-shepherd-to-present-at-challenger-learning-center-of-tallahassee Contact information for the event is also available at the link above. Best, Bob Hart Professor of Meteorology and Department Chair Department of Earth, Ocean, and Atmospheric Science Florida State University -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Wed Mar 27 10:49:32 2024 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Wed, 27 Mar 2024 10:49:32 -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. *_01 April, rm 6067 EOA, 1 PM to 3 PM_* GLY Dissertation Dfns--Kyle Compare Title:? Hydrochemical and Deep Learning Investigations of Groundwater-Surface Water Interactions in the Eogenetic Karst Systems of Florida [Major Prof, Dr. M. Ye] Zoom ID: https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Ffsu.zoom.us%2Fj%2F96686439308&data=05%7C02%7Ceoas-seminar%40lists.fsu.edu%7C53cfdc53d6594f8a5a3408dc4e6d1dd5%7Ca36450ebdb0642a78d1b026719f701e3%7C0%7C0%7C638471477748539948%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=IgCpTj2Gm0bx9Q6ZQQvjbOtiCbLBJWvdL9txRfGLjYg%3D&reserved=0 -- *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 Wed Mar 27 14:44:05 2024 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Wed, 27 Mar 2024 18:44:05 +0000 Subject: [Eoas-seminar] =?cp1258?q?Please_join_us_for_a_Friday_3pm_Semina?= =?cp1258?q?r_by_PO_faculty_candidate_on_=22El_Nin=DEo/Southern_Oscillatio?= =?cp1258?q?n_theory=2C_complexity_and_the_role_of_spatial_shifting=22?= Message-ID: Please join us for a Friday 3pm Seminar in Room 1050 by PO faculty candidate Dr. Sulian Thual of Mercator Ocean Title and abstract below. El Nin?o/Southern Oscillation theory, complexity and the role of spatial shifting The El Ni?o?Southern Oscillation (ENSO) spawned in the tropical Pacific is the most prominent year-to-year climate fluctuation on Earth, with a global reach and a legion of societal and environmental impacts. Its general dynamics are reasonably well understood and they involve ocean-atmosphere interactions that modify the Walker circulation in the equatorial Pacific. However, the ENSO also exhibits considerable spatio-temporal complexity, for example a pronounced event-to-event diversity and asymmetry as well as fundamental nonlinearities. This so-called ENSO complexity hinders practical predictions and climate change assessment from general circulation models, and it also challenges current understanding. The ENSO basin-scale dynamics are rather low-dimensional and can be encapsulated by relatively simple mathematical models such as the recharge-discharge model. We will briefly review these fundamentals of ENSO theory before discussing recent extensions that allow grasping more advanced spatio-temporal features. The background Walker circulation in the Tropical Pacific for example shows pronounced zonal movements, or spatial shifting, as delineated by the edge of the western Pacific warm pool. Including this process in the conventional recharge-discharge model improves spatio-temporal complexity with notably the ability to grasp distinct El Ni?o spatial patterns as well as a fundamental nonlinearity between principal components of SST. Broad perspectives include the study of climate change sensitivity as well as multiscale and pantropical interactions. --- Eric Chassignet Professor and Director Center for Ocean-Atmospheric Prediction Studies (COAPS) Florida State University 2000 Levy Avenue, Building A, Suite 292 P.O. Box 3062741 Tallahassee, FL 32306-2741 Office : (1) 850-645-7288 COAPS : (1) 850-644-3846 Cell : (1) 850-524-0033 (urgent matters only) FAX : (1) 850-644-4841 E-mail : echassignet at fsu.edu http://www.coaps.fsu.edu -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Thu Mar 28 13:26:00 2024 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 28 Mar 2024 17:26:00 +0000 Subject: [Eoas-seminar] [Seminar-announce] Scientific Computing Colloquium with Feng Bao Message-ID: "Generative Machine Learning Models for Uncertainty Quantification" Feng Bao Timothy Gannon Endowed Associate Professor of Mathematics Department of Mathematics, Florida State University 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. NOTE: In-person attendance is requested. Zoom access is intended for external (non-departmental) participants only. https://fsu.zoom.us/j/94273595552 Meeting # 942 7359 5552 ? Colloquium recordings will be made available here, sc.fsu.edu/colloquium Wednesday, Apr 3, 2024, Schedule: * 3:00 to 3:30 PM Eastern Time (US and Canada) ? Nespresso & Teatime - 417 DSL Commons * 3:30 to 4:30 PM Eastern Time (US and Canada) ? Colloquium - 499 DSL Seminar Room Abstract: Generative machine learning models, including variational auto-encoders (VAE), normalizing flows (NF), generative adversarial networks (GANs), diffusion models, have dramatically improved the quality and realism of generated content, whether it's images, text, or audio. In science and engineering, generative models can be used as powerful tools for probability density estimation or high-dimensional sampling that critical capabilities in uncertainty quantification (UQ), e.g., Bayesian inference for parameter estimation. Studies on generative models for image/audio synthesis focus on improving the quality of individual sample, which often make the generative models complicated and difficult to train. On the other hand, UQ tasks usually focus on accurate approximation of statistics of interest without worrying about the quality of any individual sample, so direct application of existing generative models to UQ tasks may lead to inaccurate approximation or unstable training process. To alleviate those challenges, we developed several new generative diffusion models for various UQ tasks, including diffusion-model-assisted supervised learning of generative models, a score-based nonlinear filter for recursive Bayesian inference, and a training-free ensemble score filter for tracking high dimensional stochastic dynamical systems. We will demonstrate the effectiveness of those methods in various UQ tasks including density estimation, learning stochastic dynamical systems, and data assimilation problems. Additional colloquium details can be found here, sc.fsu.edu/news-and-events/colloquium/1778-colloquium-with-feng-bao-2024-04-03 -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 5865 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 Sun Mar 31 22:07:51 2024 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 1 Apr 2024 02:07:51 +0000 Subject: [Eoas-seminar] Please join us for the PO faculty candidate Dr. Xiaoting Yang's seminar on Tuesday afternoon at 3pm in room 1044 Message-ID: Please join us for the PO faculty candidate seminar on Tuesday afternoon at 3pm in room 1044 Dr. Xiaoting Yang Scripps Institution of Oceanography Tuesday, April 2 3:00 pm Room 1044 ?Three-dimensional structure of mid-depth Meridional Overturning Circulation: a study on the dynamics and paths of the Ocean Deep Eastern Boundary Currents.? Abstract: The Meridional Overturning Circulation carries significant transports of mass, carbon, heat and other important tracers in the global ocean, and it has a rich three-dimensional structure. Southward Deep Eastern Boundary Currents (DEBCs), between one and four km depth in the Southern Hemisphere basins, are important branches of the overturning circulation by contributing to large-scale ocean transport and determining mid-depth tracer distribution patterns. However, these currents have remained under-appreciated for their roles in global circulation and their dynamics were not well understood. The vorticity dynamics of such currents are studied in a hierarchy of models in this work. Realistic and idealized regional GCM experiments robustly show that these DEBCs are governed by a layered-structure of vorticity dynamics: a wide layer dominated by ?interior-like? vorticity balance, plus a narrow hydrostatic layer adjacent to the eastern boundary. This means that DEBCs are dynamically different from the well-known western boundary currents. It is further shown that the dominant vortex stretching term is maintained by both eddy temperature transport and sloping bathymetry, indicating that topography plays a role in determining the mid-depth large-scale mass transport pathways. How the DEBCs contribute to meridional large-scale ocean transport is studied from a Lagrangian perspective. DEBCs, along with the deep western boundary currents, and mid-depth interior flows, are found to be important branches carrying mid-depth mass southward towards Drake Passage. --- Eric Chassignet Professor and Director Center for Ocean-Atmospheric Prediction Studies (COAPS) Florida State University 2000 Levy Avenue, Building A, Suite 292 P.O. Box 3062741 Tallahassee, FL 32306-2741 Office : (1) 850-645-7288 COAPS : (1) 850-644-3846 Cell : (1) 850-524-0033 (urgent matters only) FAX : (1) 850-644-4841 E-mail : echassignet at fsu.edu http://www.coaps.fsu.edu -------------- next part -------------- An HTML attachment was scrubbed... URL: