From eoas-seminar at lists.fsu.edu Thu Nov 2 14:02:44 2023 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 2 Nov 2023 18:02:44 +0000 Subject: [Eoas-seminar] [Seminar-announce] Scientific Computing Colloquium with Michael Mueller Message-ID: "Generalized and Computationally Efficient Modeling of Turbulent Reacting Flows: A Union of Theory and Machine Learning" Michael Mueller Department of Mechanical and Aerospace Engineering, Princeton 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, Nov 8th, 2023, 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 modeling of turbulent reacting flows is immensely challenging due to not only the broad range of length scales and time scales of the turbulence and combustion phenomena but also due to the large number of chemical species required to describe hydrocarbon chemistry, resulting in an extremely high-dimensional thermochemical state-space. ?Brute-force? turbulent combustion models tackle this extremely high-dimensionality head-on by solving transport equations for every chemical species at great computational cost but without any approximation to the combustion processes. Conversely, traditional manifold-based turbulent combustion models reduce the dimensionality of the thermochemical state-space by a priori projecting the thermochemical state onto a very low-dimensional manifold by presuming that combustion occurs in a single asymptotic ?mode? decreasing the computational cost but restricting generality to real ?multi-modal? combustion processes. In this seminar, a new modeling framework will be presented that breaks this fundamental trade-off, leading to a very general turbulent combustion model that is also computationally efficient. On the theoretical front, two-dimensional manifold equations are derived starting from thermodynamic considerations to describe general ?multi-modal? combustion. Alone, these theoretical advancements would not be practically useful for engineering-fidelity simulations due to key unclosed terms with no obvious physics-based pathways for closure and being too cumbersome for traditional computational algorithms for manifold-based models. These issues are overcome by leveraging elements of machine learning to (1) close key unclosed terms using data-based models and (2) using ?on-the-fly? learning to avoid preprocessing the manifold-based combustion model. The work demonstrates that physics-based approaches and data-based approaches are not an either/or paradigm but rather a both/and paradigm, with data-based approaches from the machine learning community used to enhance and enable more general physics-based models in this work. Additional colloquium details can be found here, https://www.sc.fsu.edu/news-and-events/colloquium/1762-colloquium-with-michael-mueller-2023-11-08 -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 5387 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 Wed Nov 8 22:25:58 2023 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 9 Nov 2023 03:25:58 +0000 Subject: [Eoas-seminar] Fwd: [Physicsfaculty] Thursday's Physics Colloquium References: Message-ID: In case anyone is interested in attending the Physics colloquium, given by yours truly. Cheers, Allison -------------------------------------------- Allison A. 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 From: Physicsfaculty > on behalf of Laticia Shaw Hall via Physicsfaculty > Date: Tuesday, November 7, 2023 at 8:34 AM To: physicsgrads at lists.fsu.edu >, physicsaffiliates at lists.fsu.edu >, >, Physicsnews at lists.fsu.edu >, physicsstaff at lists.fsu.edu> Subject: [Physicsfaculty] Thursday's Physics Colloquium PHYSICS DEPARTMENT COLLOQUIUM DATE: Thursday, November 9th, 2023 TIME AND LOCATION: Refreshments served at 3:15pm Lecture at 3:45pm 101 UPL (Richards Building) SPEAKER: Allison Wing AFFILIATION: Florida State University TITLE: Acceleration of tropical cyclone development by cloud-radiative feedbacks ABSTRACT: A complete understanding of the development of hurricanes and tropical cyclones (TC) remains elusive and forecasting TC intensification remains challenging. This motivates further research into the physical processes that govern TC development. Here, I investigate the importance of radiative feedbacks in TC development and the mechanisms underlying their influence is investigated in a set of idealized convection-permitting numerical simulations. I find that a ?cloudy greenhouse effect? accelerates TC development, in which anomalous infrared warming in areas of deep thunderstorm clouds near the center of theTC drives rising motion in the storm, which helps moisten the atmosphere and aids in the formation of the TC?s circulation. Improving the representation of cloud-radiative feedbacks in forecast models therefore has the potential to yield critical advancements in TC prediction, but this requires a better understanding of these cloud-radiative feedbacks in observed TCs. Thus I also present ongoing work that investigates these processes using satellite (CloudSat) retrievals of cloud properties. Both the model simulations and satellite observations agree that ice clouds are the strongest driver of the radiative feedbacks, and that these feedbacks are particularly important in storms undergoing rapid intensification. HOST: Jorge Piekarewicz Laticia Shaw-Hall Administrative Assistant Department of Physics 315 Keen Building Florida State University Tallahassee, FL 32306 Phone: (850) 644-2868 Email: lshawhall at fsu.edu *Work Remotely on Wednesdays and Fridays?? _______________________________________________ Physicsfaculty mailing list Physicsfaculty at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/physicsfaculty -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Thu Nov 9 09:59:01 2023 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 9 Nov 2023 14:59:01 +0000 Subject: [Eoas-seminar] MET Seminar - Thursday November 16 - Dr. Nadir Jeevanjee (NOAA GFDL) Message-ID: Dear all, Please join us next Thursday November 16 for a Meteorology seminar, given by Dr. Nadir Jeevanjee of NOAA?s Geophysical Fluid Dynamics Laboratory. He will speak about "Theoretical constraints on convective clouds? (abstract below). Dr. Jeevanjee will be joining us in person in 1044. If you are interested in meeting with him, please contact Allison Wing (awing at fsu.edu). Graduate students, there will be a free lunch with Dr. Jeevanjee on Thursday. Please RSVP to Allison Wing. Faculty, please join the speaker and I for drinks and casual conversation at Proof at the Union immediately after the seminar. DATE: Thursday November 16 SEMINAR TIME: Refreshments at 3 PM, Talk 3:15 - 4:15 PM SEMINAR LOCATION: EOA 1044 (Speaker in person) SPEAKER: Dr. Nadir Jeevanjee TITLE: Theoretical constraints on convective clouds ABSTRACT: Convective clouds are central characters in weather and climate, but are governed by a complex interplay of fluid dynamics, thermodynamics, and cloud microphysics which make their gross behavior difficult to understand. Here we identify constraints on two aspects of convective cloudiness: the convective mass-flux and the density of liquid water within cloudy updrafts. We show that convective mass-flux is constrained to decrease with warming at a rate of 3-4%/K, and that the density of cloud liquid water is constrained to be about 1/10 the value of boundary layer specific humidity in both present day and warmed climates. Both constraints are verified across a wide hierarchy of models, from pencil-and-paper theory to cloud-resolving models to global climate models. 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 -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Mon Nov 13 13:23:45 2023 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 13 Nov 2023 13:23:45 -0500 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. *_14 Nov, rm 6067 EOA, 3 PM to 5 PM_* MET Thesis Dfns--Ian Siew Title:? Validation of Satellite Snowfall and Rainfall Retrievals by Surface Observations? [Major Prof, Dr. G Liu] Zoom ID: https://fsu.zoom.us/j/3864310835 _ *15 Nov, rm 3008F EOA, 9 AM to 12 PM*_ GLY Prospectus Dfns--Jay Goodin Title:? Anoxia and Extinction: Using Ti Isotopes to Evaluate the Duration and Extent of Marine Anoxia Across Two Phanerozoic Extinction Events ? The End Triassic Extinction and mid-Silurian Ireviken Extinction Event? [Major Prof, Dr. J Owens] -- *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 Tue Nov 14 08:25:44 2023 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 14 Nov 2023 13:25:44 +0000 Subject: [Eoas-seminar] [Seminar-announce] Scientific Computing Colloquium with Alexei Poludnenko Message-ID: "Supersonic Combustion: From a Detonation Engine to an Exploding Star" Alexei Poludnenko School of Mechanical, Aerospace, and Manufacturing Engineering University of Connecticut (UCONN) 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, Nov 15, 2023, 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: Reacting flows are pervasive both in our daily lives on Earth and in the Universe. They power modern society being at the heart of many energy generation and propulsion systems, such as gas turbines, internal combustion and jet engines. At the same time, they also power the Universe through the energy produced in stellar interiors. Despite this ubiquity in Nature, reacting flows still pose a number of fundamental questions concerning their structure and dynamics often exhibiting surprising and unexpected behavior. In recent years, the advent of large-scale direct numerical simulations (DNS) has enabled detailed exploration of the reacting flow dynamics in extreme, previously inaccessible supersonic regimes characterized by high flow speeds, significant compressibility effects, and strong coupling between exothermic reactions and the fast turbulent flow. Such combustion regimes are fundamental to the operation of many modern propulsion applications from scramjets to detonation-based engines. This talk will present an overview of a range of phenomena discovered in recent years in DNS of high-speed reacting flows. These range from intrinsic instabilities of reacting turbulence, which can lead to the onset of catastrophic transitions, e.g., spontaneous detonation formation, to the qualitative changes in the nature of the turbulent cascade in the presence of exothermic reactions, to the fundamental and still largely enigmatic properties of the dynamics of detonations. Finally, challenges presented by these findings will be discussed both in the context of our theoretical understanding of reacting flows, and also in the context of modern modeling paradigms, such as Large Eddy Simulations. Additional colloquium details can be found here, https://www.sc.fsu.edu/news-and-events/colloquium/1763-colloquium-with-alexei-poludnenko-2023-11-15 -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 5082 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 Nov 14 16:27:33 2023 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 14 Nov 2023 21:27:33 +0000 Subject: [Eoas-seminar] Upcoming Thesis and Dissertation Defenses In-Reply-To: References: Message-ID: Hi all, We will be doing the public prospectus in 5067 from 9 to 10 to have more space and then we will move to 3008F for the closed-door portion. Regards, Jeremy From: Eoas-seminar On Behalf Of eoas-seminar--- via Eoas-seminar Sent: Monday, November 13, 2023 1:24 PM To: eoas-seminar--- via Eoas-seminar Subject: [Eoas-seminar] Upcoming Thesis and Dissertation Defenses 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. 14 Nov, rm 6067 EOA, 3 PM to 5 PM MET Thesis Dfns--Ian Siew Title: Validation of Satellite Snowfall and Rainfall Retrievals by Surface Observations [Major Prof, Dr. G Liu] Zoom ID: https://fsu.zoom.us/j/3864310835 15 Nov, rm 3008F EOA, 9 AM to 12 PM GLY Prospectus Dfns--Jay Goodin Title: Anoxia and Extinction: Using Ti Isotopes to Evaluate the Duration and Extent of Marine Anoxia Across Two Phanerozoic Extinction Events ? The End Triassic Extinction and mid-Silurian Ireviken Extinction Event [Major Prof, Dr. J Owens] -- 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 Thu Nov 16 08:00:05 2023 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 16 Nov 2023 13:00:05 +0000 Subject: [Eoas-seminar] TODAY: MET Seminar - Dr. Nadir Jeevanjee (NOAA GFDL) In-Reply-To: References: Message-ID: Dear all, This is reminder of today?s MET seminar, given by Dr. Nadir Jeevanjee of NOAA?s Geophysical Fluid Dynamics Laboratory. He will speak about ?Theoretical constraints on convective clouds?, Snacks at 3, talk at 3:15 in EOA 1044. The intent is that everyone joins in person, but if you need to attend via Zoom due to a medical reason or approved work off campus, contact Allison Wing for the link. Cheers, Allison -------------------------------------------- Allison A. 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 Nov 9, 2023, at 9:59 AM, eoas-seminar--- via Eoas-seminar wrote: Dear all, Please join us next Thursday November 16 for a Meteorology seminar, given by Dr. Nadir Jeevanjee of NOAA?s Geophysical Fluid Dynamics Laboratory. He will speak about "Theoretical constraints on convective clouds? (abstract below). Dr. Jeevanjee will be joining us in person in 1044. If you are interested in meeting with him, please contact Allison Wing (awing at fsu.edu). Graduate students, there will be a free lunch with Dr. Jeevanjee on Thursday. Please RSVP to Allison Wing. Faculty, please join the speaker and I for drinks and casual conversation at Proof at the Union immediately after the seminar. DATE: Thursday November 16 SEMINAR TIME: Refreshments at 3 PM, Talk 3:15 - 4:15 PM SEMINAR LOCATION: EOA 1044 (Speaker in person) SPEAKER: Dr. Nadir Jeevanjee TITLE: Theoretical constraints on convective clouds ABSTRACT: Convective clouds are central characters in weather and climate, but are governed by a complex interplay of fluid dynamics, thermodynamics, and cloud microphysics which make their gross behavior difficult to understand. Here we identify constraints on two aspects of convective cloudiness: the convective mass-flux and the density of liquid water within cloudy updrafts. We show that convective mass-flux is constrained to decrease with warming at a rate of 3-4%/K, and that the density of cloud liquid water is constrained to be about 1/10 the value of boundary layer specific humidity in both present day and warmed climates. Both constraints are verified across a wide hierarchy of models, from pencil-and-paper theory to cloud-resolving models to global climate models. 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 Tue Nov 21 13:08:14 2023 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 21 Nov 2023 18:08:14 +0000 Subject: [Eoas-seminar] [Seminar-announce] Scientific Computing Colloquium with Eric Chassignet Message-ID: "High-Resolution North Atlantic Ocean Modeling: Impact of bathymetry, tides, and atmospheric forcing" Eric Chassignet Director, Center for Ocean-Atmospheric Prediction Studies (COAPS) Florida State University (FSU) 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, Nov 29, 2023, 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: In Chassignet and Xu (2017), the authors argued that the next threshold for a significant improvement in western boundary currents representation (i.e., the Gulf Stream in the North Atlantic) is an increase in the horizontal resolution from an eddying 1/10? to a submesoscale enabled 1/50? grid spacing. They showed that, as the resolution is increased to 1/50? (~ 1.5 km at mid-latitudes) from 1/12?, the representation of Gulf Stream penetration and associated recirculating gyres shifts from unrealistic to realistic and that the penetration of eddy kinetic energy into the deep ocean is drastically different and closely resembles observations. They however noted several discrepancies between the high-resolution 1/50? numerical simulation and observations. The first one was no variability in the sea surface height spectra wavenumber spectral slope between high/mid-latitudes and the equator. The second one was an area of high sea surface height variability and surface EKE wider than observed near the New England seamount chain which suggests that interactions with the topography may be overemphasized in this model configuration. We will show that the inclusion of high-resolution bathymetry, tides, and atmospheric feedback significantly improve the model's abilities to represent the observed ocean variability and Gulf Stream pathway. Additional colloquium details can be found here, https://www.sc.fsu.edu/news-and-events/colloquium/1764-colloquium-with-eric-chassignet-2023-11-29 -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 4703 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 Nov 27 08:03:03 2023 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 27 Nov 2023 13:03:03 +0000 Subject: [Eoas-seminar] This FRIDAY December 1, 3 PM - Baum Lecture by Dr. Kerry Emanuel (MIT) In-Reply-To: References: Message-ID: Dear all, This is a reminder to please join us for the Werner A. Baum Lecture this Friday December 1 at 3 PM in EOA 1050, to be given by distinguished climate scientist Dr. Kerry Emanuel, professor emeritus at MIT. See the attached flyer for more information. Dr. Emanuel will present ?What Sets the Climatology of Severe Thunderstorms? (abstract below). While this is intended as an in-person event, if you have a medical excuse or approved work off campus, please contact Allison Wing (awing at fsu.edu) for a Zoom link. DATE: Friday December 1 TIME: 3-4 PM LOCATION: EOA 1050 SPEAKER: Dr. Kerry Emanuel (MIT) TITLE: What Sets the Climatology of Severe Thunderstorms ABSTRACT: Severe convective storms are a significant source of weather-related losses and injury, worldwide. Yet very little is known about what sets their climatology in the current climate, and why climate models generally indicate increased severe storm activity as the climate warms. In this talk, I will focus on one of the main ingredients in severe convective storms: Convective Available Potential Energy (CAPE). The global climatology of CAPE differs significantly from that of deep convection in general; for example, high CAPE values are quite rare over the ocean. Using both an observational analysis and a 1-D model coupled to a model of soil and vegetation, I will argue that high CAPE results when air masses that have been significantly modified by passage over dry, lightly vegetated soils are advected over moist soils with moderate to extensive vegetation. This suggests that widespread agricultural practices may significantly modify the climatology of severe convection and points to how climate change might affect the prevalence and intensity of severe convective storms. -------------------------------------------- Allison A. 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 -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: 2023 - Baum Lecture - Flyer.pdf Type: application/pdf Size: 318705 bytes Desc: 2023 - Baum Lecture - Flyer.pdf URL: From eoas-seminar at lists.fsu.edu Mon Nov 27 10:11:51 2023 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 27 Nov 2023 10:11:51 -0500 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. *_30 Nov, rm 5067 EOA, 2:45 PM to 4:15 PM_* GLY MS Prospectus Dfns--Jade Walker Greene Title: Geochemical Investigation of Sulfur Springs in the Woodville Karst Plain? [Major Prof, Dr. S Young] -- *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: