From eoas-seminar at lists.fsu.edu Sun Feb 1 14:28:57 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Sun, 1 Feb 2026 19:28:57 +0000 Subject: [Eoas-seminar] [Seminar-announce] Scientific Computing Colloquium with Simone Brugiapaglia Message-ID: "From compression to depth: generative compressive sensing and deep greedy unfolding for signal reconstruction" Simone Brugiapaglia Department of Mathematics and Statistics, Concordia 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 in our 499 Dirac Science Library (DSL) Seminar Room. 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, Feb 4, 2026, 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: Since its inception in the early 2000s, compressive sensing has become a well-established paradigm for efficient signal recovery, with applications ranging from medical imaging to scientific computing. More recently, data-driven reconstruction methods based on deep neural networks have attracted considerable attention and shown great promise as an alternative approach. In this talk, we will review recent progress in signal reconstruction techniques that combine principles from compressive sensing and deep learning. First, we will discuss recent advances in generative compressive sensing, where the traditional sparsity prior is replaced by the assumption that the signal to be reconstructed lies in the range of a deep generative neural network. Second, we will explore deep greedy unfolding, which involves designing deep neural network architectures by "unrolling" the iterations of a sparse recovery algorithm onto the layers of a trainable neural network. In both cases, we will present numerical results in tandem with theoretical guarantees. Additional colloquium details can be found here, https://www.sc.fsu.edu/news-and-events/colloquium/1905-colloquium-with-simone-brugiapaglia-2026-02-04 -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 5112 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 Feb 2 10:29:48 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 2 Feb 2026 15:29:48 +0000 Subject: [Eoas-seminar] Erica Lucas Seminar - 10:45 - 6th floor Message-ID: Colleagues, Just a reminder that Erica Lucas's seminar is on the 6th floor (room 6042), not on the first floor. -Cheers, Mike __________________________________________ Prof. Mike Stukel Department Chair Earth, Ocean, and Atmospheric Science Dept. Florida State University -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Mon Feb 2 11:34:28 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 2 Feb 2026 16:34:28 +0000 Subject: [Eoas-seminar] MET Seminar - Tuesday Feb 3, 3 PM - Dr. Prasanth Prabhakaran (FSU) In-Reply-To: References: Message-ID: Hi all, Dr. Prasanth Prabhakaran will be visiting my group this week and is also available for meetings with anyone interested. Let me know if you'd like to meet and I'll get you on his schedule. His current work focuses on modeling cloud transitions under different aerosol and future climate conditions, but he'll soon be transitioning to a faculty position at the Indian Institute of Technology Delhi where he's planning to broaden his focus to deep convection and monsoon systems as well. Cheers, Michael -- Dr. Michael S. Diamond Assistant Professor of Meteorology https://diamondclimate.wordpress.com/ [https://artsandsciences.fsu.edu/sites/g/files/upcbnu321/files/email-lockups/Earth%20Ocean%20and%20Atmospheric%20Science%20signature.png] ________________________________ From: Eoas-seminar on behalf of eoas-seminar--- via Eoas-seminar Sent: Friday, January 30, 2026 5:14 PM To: eoas-seminar--- via Eoas-seminar Subject: [Eoas-seminar] MET Seminar - Tuesday Feb 3, 3 PM - Dr. Prasanth Prabhakaran (FSU) Dear all, Please join us for a Meteorology seminar on Tuesday February 3 at 3 PM, given by Dr. Prasanth Prabhakaran, a postdoc here at FSU. He will speak about ?Marine cloud brightening in a warming world? (abstract below). While Dr. Prabhakaran will present in person, a Zoom link is available for those with a medical excuse or approved work off-campus. Please contact Allison Wing (awing at fsu.edu) for the link. DATE: Tuesday February 3 TIME: 3-4 PM, please join early for refreshments LOCATION: EOA 1044 SPEAKER: Dr. Prasanth Prabhakaran TITLE: Marine cloud brightening in a warming world ABSTRACT: Marine low-clouds have a net cooling effect on the planet. They reflect a significant portion of the incoming solar radiation. The high sensitivity of these clouds to aerosol concentration has led to speculations about altering planetary albedo (reflectivity) by increasing the aerosol concentration. This proposed climate intervention approach is referred to as marine cloud brightening (MCB), where the deliberate injection of sea-spray aerosol particles enhances the albedo of shallow marine low-clouds. We explore the efficiency of MCB in a warmer climate towards the end of the century. Additionally, we assess the impact of climate change on aerosol-cloud interactions in these clouds. We use a stratocumulus-to-cumulus transition (SCT) in the Northeast Pacific region as a representative case. Using a Lagrangian large-eddy simulation model, we examine two SCT cases with different free-tropospheric (FT) humidities ? moist FT and dry FT. For each case, we consider two Shared Socioeconomic Pathways (SSPs), SSP3-7.0 and SSP1-2.6, from the most recent Coupled Model Intercomparison Project (CMIP6) to determine the extent of warming and changes in aerosol concentration at the end of the century. We find that the cloud radiative effect (CRE) in non-precipitating stratocumulus clouds is more susceptible to climate change than to aerosol. However, after the breakup of the cloud deck, the impact of aerosol tends to dominate. Furthermore, in these low-clouds, aerosol-cloud interactions (Twomey effect and liquid water path adjustments) are to leading order immune to climate change, unless aerosol-induced cloud fraction adjustment is significant. Furthermore, we show that the efficacy of MCB decreases in a warmer climate due to the reduction in low-cloud cover. We look forward to seeing you there! --------------------------------------------------- Allison A. Wing, Ph.D. Werner A. and Shirley B. Baum 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 Feb 3 07:45:00 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 3 Feb 2026 12:45:00 +0000 Subject: [Eoas-seminar] TODAY 3 PM - MET Seminar - Dr. Prasanth Prabhakaran (FSU) In-Reply-To: References: Message-ID: Dear all, This is a reminder of the MET seminar TODAY at 3 PM, given by Dr. Prasanth Prabhakaran. He will speak about ?Marine cloud brightening in a warming world? (abstract below). 3 PM, 1044, snacks! See you there! Cheers, Allison --------------------------------------------------- Allison A. Wing, Ph.D. Werner A. and Shirley B. Baum Associate Professor Department of Earth, Ocean and Atmospheric Science Florida State University awing at fsu.edu From: Eoas-seminar on behalf of eoas-seminar--- via Eoas-seminar Date: Friday, January 30, 2026 at 5:15?PM To: eoas-seminar--- via Eoas-seminar Subject: [Eoas-seminar] MET Seminar - Tuesday Feb 3, 3 PM - Dr. Prasanth Prabhakaran (FSU) Dear all, Please join us for a Meteorology seminar on Tuesday February 3 at 3 PM, given by Dr. Prasanth Prabhakaran, a postdoc here at FSU. He will speak about ?Marine cloud brightening in a warming world? (abstract below). While Dr. Prabhakaran will present in person, a Zoom link is available for those with a medical excuse or approved work off-campus. Please contact Allison Wing (awing at fsu.edu) for the link. DATE: Tuesday February 3 TIME: 3-4 PM, please join early for refreshments LOCATION: EOA 1044 SPEAKER: Dr. Prasanth Prabhakaran TITLE: Marine cloud brightening in a warming world ABSTRACT: Marine low-clouds have a net cooling effect on the planet. They reflect a significant portion of the incoming solar radiation. The high sensitivity of these clouds to aerosol concentration has led to speculations about altering planetary albedo (reflectivity) by increasing the aerosol concentration. This proposed climate intervention approach is referred to as marine cloud brightening (MCB), where the deliberate injection of sea-spray aerosol particles enhances the albedo of shallow marine low-clouds. We explore the efficiency of MCB in a warmer climate towards the end of the century. Additionally, we assess the impact of climate change on aerosol-cloud interactions in these clouds. We use a stratocumulus-to-cumulus transition (SCT) in the Northeast Pacific region as a representative case. Using a Lagrangian large-eddy simulation model, we examine two SCT cases with different free-tropospheric (FT) humidities ? moist FT and dry FT. For each case, we consider two Shared Socioeconomic Pathways (SSPs), SSP3-7.0 and SSP1-2.6, from the most recent Coupled Model Intercomparison Project (CMIP6) to determine the extent of warming and changes in aerosol concentration at the end of the century. We find that the cloud radiative effect (CRE) in non-precipitating stratocumulus clouds is more susceptible to climate change than to aerosol. However, after the breakup of the cloud deck, the impact of aerosol tends to dominate. Furthermore, in these low-clouds, aerosol-cloud interactions (Twomey effect and liquid water path adjustments) are to leading order immune to climate change, unless aerosol-induced cloud fraction adjustment is significant. Furthermore, we show that the efficacy of MCB decreases in a warmer climate due to the reduction in low-cloud cover. We look forward to seeing you there! --------------------------------------------------- Allison A. Wing, Ph.D. Werner A. and Shirley B. Baum 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 Feb 3 08:59:50 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 3 Feb 2026 13:59:50 +0000 Subject: [Eoas-seminar] MET Seminar (Feb 10, 3 PM): Dr. Melody Lu (UCLA) Message-ID: Dear all, Please join us for a MET seminar, which will be at 3:00PM on Feb. 10 (Tuesday) in EOAS 1044, given by Dr. Melody Lu from University of California at Los Angeles. Her seminar is entitled ?Large-Scale Atmospheric Circulation Across the Earth System: From Global Patterns to Regional Extremes? (abstract below) DATE: Tuesday, February 10 TIME: 3-4 PM LOCATION: EOA 1044 SPEAKER: Dr. Melody Lu TITLE: Large-Scale Atmospheric Circulation Across the Earth System: From Global Patterns to Regional Extremes https://fsu.zoom.us/j/92601800719 Meeting ID: 926 0180 0719 Abstract: The large-scale atmospheric circulation, from synoptic eddies (~1000 km) to planetary-scale waves, serves as the atmosphere?s expressway system, shuttling heat between the equator and poles and routing moisture across oceans and continents. Its variability governs where temperature and moisture anomalies persist, thereby influencing day-to-day weather patterns and the likelihood of regional extremes. While dry, adiabatic dynamics provide a clean baseline for many circulation features, a complete picture remains hindered by the complexity of diabatic processes (e.g., precipitation and radiation) when considering how circulation couples with hydrological cycle, land surface, and ocean. As a result, small differences in local processes (e.g., tropical convection) can project onto remote large-scale circulation (e.g. subtropical highs), contributing to substantial uncertainty in regional climate projections. My research agenda seeks a mechanistic understanding of how large-scale atmospheric circulation interacts with other Earth-system components to shape regional climate variability and extremes. I focus on two main questions: (1) how precipitation and sea surface temperature (SST) couple to planetary-scale circulation, and (2) how synoptic circulation and land processes jointly shape the statistics of temperature extremes. I address these problems using climate-model hierarchies, statistical tools, and physically grounded theory. In this talk, I present two specific investigations. First, focusing on circulation-hydrological coupling, I show that low confidence in projected summer North Pacific Subtropical High arises primarily from the uncertainty in tropical precipitation changes. Second, focusing on circulation-land coupling, I derive a moist static energy-based scaling for near-surface land temperature variance that separates contributions from synoptic advection and land-atmosphere feedbacks. Together, these studies bridge idealized theory and comprehensive Earth-system modeling to advance mechanistic understanding of large-scale circulation dynamics, thereby improving projections of regional climate variability and extremes. Ming Cai -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Thu Feb 5 05:24:44 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 5 Feb 2026 10:24:44 +0000 Subject: [Eoas-seminar] Fwd: MET Seminar: Thursday February 5 3PM (Dr. Cheng Zheng, Stony Brook University) References: Message-ID: Dear all, This is a reminder to please join us TODAY afternoon for a MET seminar, given by Dr. Cheng Zheng from Stony Brook University. DATE: Thursday, February 5 TIME: 3-4 PM LOCATION: EOA 1044 SPEAKER: Dr. Cheng Zheng TITLE: Tropical-extratropical Interactions on Subseasonal-to-seasonal Time Scales: Dynamics and Predictions https://fsu.zoom.us/j/95168590030 Meeting ID: 951 6859 0030 See you there. Ming Begin forwarded message: From: Cai Subject: MET Seminar: Thursday February 5 3PM (Dr. Cheng Zheng, Stony Brook University) Date: January 28, 2026 at 9:08:57?PM EST To: eoas-seminar--- via Eoas-seminar Dear all, Please join us for a MET seminar, which will be at 3:00PM on Feb. 5 (Thursday) in EOAS 1044, given by Dr. Cheng Zheng from Stony Brook University. His seminar is entitled ?Tropical-extratropical Interactions on Subseasonal-to-seasonal Time Scales: Dynamics and Predictions? (abstract below) DATE: Thursday, February 5 TIME: 3-4 PM LOCATION: EOA 1044 SPEAKER: Dr. Cheng Zheng TITLE: Tropical-extratropical Interactions on Subseasonal-to-seasonal Time Scales: Dynamics and Predictions https://fsu.zoom.us/j/95168590030 Meeting ID: 951 6859 0030 Abstract: Tropical-extratropical interactions has been recognized as one of the key drivers of subseasonal predictability. The Madden-Julian Oscillation (MJO), the dominant mode of tropical intraseasonal variability, excites Rossby waves that propagate into the extratropics, influencing surface temperature and precipitation via teleconnections. A better understanding of these teleconnections could lead to improvements in subseasonal predictions. In this talk, I will first examine the observed MJO teleconnections and the associated Rossby waves. Next, by using an idealized dynamical model, I will explore how various factors modulate these teleconnections, focusing on: (1) the role of MJO propagation and lifetime, and (2) the influence of the extratropical background state on the propagation of MJO-induced Rossby waves. Then, I will discuss the role of MJO teleconnections in subseasonal winter precipitation predictions. Current dynamical models achieve prediction skill for extratropical cyclones?which bring most of the winter precipitation?primarily through ENSO and stratospheric influences. However, MJO-driven impacts on extratropical cyclones remain inadequately represented, presenting opportunities for future improvement. Finally, I will introduce a newly developed machine learning framework that leverages ENSO and MJO teleconnections to predict winter precipitation on subseasonal timescales. This machine learning tool outperforms traditional statistical models, offering a promising path for improving subseasonal predictions. -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Thu Feb 5 10:06:58 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 5 Feb 2026 15:06:58 +0000 Subject: [Eoas-seminar] Colloquium Monday Feb 9 Dr. McMillan Message-ID: I am pleased to announce a colloquium On: Monday February 9 at 10:45am By: Dr. Mitchel McMillan Georgia Institute of Technology At: EOAS 6042 Entitled: Lithospheric drip tectonics: From mapping to models Abstract: Gravitational foundering (lithospheric dripping or delamination) is considered an important mechanism for removing dense, mafic portions of volcanic arc crust. Does a similar process also operate beneath back-arc orogens and thereby contribute to mountain building? Some geologic and geophysical data provide evidence for this "drip tectonics" hypothesis, but it remains poorly understood. In this talk, I will present results from geologic mapping in the Andean Puna Plateau, along with geodynamic and thermodynamic simulations. These results suggest that dripping/delamination may be intrinsically linked to plate tectonics through crustal thickening and fluid migration, and they highlight a need for further research to understand the feedbacks between fluid infiltration, metamorphism, and deformation -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Thu Feb 5 12:37:06 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 5 Feb 2026 17:37:06 +0000 Subject: [Eoas-seminar] PhD Defense - Daneisha Jones Message-ID: Hi all, Please join us for Daneisha Jones' Doctoral Defense on Monday, February 9, 2026 in room EOA 5067 at 1:30 EST. Title: A NOVEL STATISTICAL FRAMEWORK THAT LINKS NEAR-SURFACE DIVERGENCE TO CONVECTIVE VERTICAL TRANSPORT, ALLOWING FUTURE STUDY OF ITS IMPACT ON HURRICANE EVOLUTION FROM SATELLITE-BASED OBSERVATIONS Name: Daneisha Jones Date: February 9, 2026 Time: 1:30 pm Location: EOAS 5067 If Zoom: https://fsu.zoom.us/j/91912877987 Major Professor: Dr. Guosheng Liu Abstract: This research is motivated by the desire to understand how near-surface divergence/convergence relate to updraft intensity in moist convection. To study this, we introduce a novel statistical methodology to quantify the relationship between column-maximum vertical velocity and parametric descriptors of the vertical profiles of horizontal wind convergence/divergence in the atmospheric column. This methodology provides a new means to characterize the vertical structure of convection and assess its relevance to tropical cyclone (TC) intensification. Utilizing several cloud-permitting model simulations of two hurricanes-Rita (2005) and Isabel (2003)-with different microphysical parameterizations, we apply canonical correlation analysis to examine how divergence/convergence patterns at various atmospheric levels relate to convective updrafts. Total column condensate is then used as an additional classification criterion applied to the canonically derived patterns, yielding four distinct precipitating regimes, each defined by unique vertical profiles of horizontal wind divergence, vertical velocity, and condensate water content. This classification remains consistent across different microphysical parameterizations and storm structures, demonstrating that the framework captures systematic relationships within the simulated hurricanes. Importantly, our analysis of the identified mature/deep convection areas affirms-consistent with prior observational and modeling studies-that TC intensification phases correspond to increased mature convection near the storm core, whereas weakening trends are associated with the outward migration of convective activity. Furthermore, our results indicate that using only near-surface convergence/divergence and column-integrated condensate can sufficiently separate the four precipitation types. An extension of the framework is explored using model-derived, satellite-like observables to illustrate how the diagnosed convective regimes relate to precipitation structures commonly observed from space, highlighting the potential for future observational applications. The novel aspect of this study lies in a joint, multivariate framework that links near-surface divergence/convergence to convective updraft intensity, enabling future space-based monitoring of TC convective structures and deeper understanding of their role in TC intensification. Best, Adea Adea Arrison Sr. Academic Program Specialist Department of Earth, Ocean & Atmospheric Science [cid:image001.png at 01DC969C.228442B0] -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.png Type: image/png Size: 3433 bytes Desc: image001.png URL: