From eoas-seminar at lists.fsu.edu Fri Sep 4 10:11:09 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 4 Sep 2026 14:11:09 +0000 Subject: [Eoas-seminar] Fw: EOAS Colloquium, 3:00 PM, Sep 4, 2026, at EOA1044 In-Reply-To: References: Message-ID: Hi all, Friendly reminder: our first EOAS colloquium is this afternoon at 3:00 PM. The colloquium speaker is Prof. Vasu Misra. Looking forward to seeing you in the colloquium room (EOA 1044). Cheers, Zhaohua ________________________________ From: Zhaohua Wu Sent: Monday, August 31, 2026 9:09 AM To: eoas-seminar--- via Eoas-seminar ; 'Allison Wing' via info at coaps Subject: EOAS Colloquium, 3:00 PM, Sep 4, 2026, at EOA1044 Hi all, I am happy to announce that we will start our EOAS colloquium this Friday, September 4, 2026. The inaugural speaker of this academic year's series will be Dr. Vasu Misra. The following is the information about the colloquium: Speaker: Dr. Vasu Misra, Florida State University Title: How anomalous is 2026 turning out to be from an Indian Monsoon perspective Abstract: The evolving El Ni?o?Southern Oscillation (ENSO) is grabbing our attention?but a remarkable story has already been unfolding over the Indian subcontinent. The 2026 Indian summer monsoon began with an unusually sluggish and rainfall-deficient phase, raising an intriguing question: How anomalous is 2026 from an Indian monsoon perspective, and how well have we anticipated it? In this talk, I will place the unusual evolution of the 2026 monsoon in the context of historical variability and examine what seasonal forecasts available in early June could?and could not?tell us about the season ahead. I will discuss several well-known sources of predictability, including ENSO, the Indian Ocean Dipole, and other slowly varying ocean?atmosphere processes, as well as the fundamental challenges that limit seasonal prediction of the monsoon. Beyond 2026, the talk will use the Indian monsoon as a window into a broader question in climate science: How much of a season's behavior can we predict months in advance, and where does predictability break down? Time: 3:00 PM, Friday, September 4, 2026 Location: EOA 1044 Contact: Prof. Zhaohua Wu (zwu at fsu.edu) A flyer for the colloquium is also attached. Cheers, Zhaohua *************************************************************** Zhaohua Wu, Professor Earth, Ocean, and Atmospheric Science Building, Room 6041, and Center for Ocean-Atmospheric Prediction Studies, Room 295 Florida State University Tallahassee, Florida zwu at fsu.edu **************************************************************** -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: 270904_Vasu_Misra.pdf Type: application/pdf Size: 119752 bytes Desc: 270904_Vasu_Misra.pdf URL: From eoas-seminar at lists.fsu.edu Fri Sep 4 14:58:28 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 4 Sep 2026 18:58:28 +0000 Subject: [Eoas-seminar] [Seminar-announce] Scientific Computing Colloquium with Ziad Musslimani Message-ID: "Space-time nonlocal integrable systems" Ziad H. Musslimani Department of Mathematics 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 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 Wednesday, Sep 9, 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: In this talk we will review past and recent results pertaining to the emerging field of integrable space-time nonlocal nonlinear evolution equations. In particular, we will discuss blow-up in finite time of soliton solutions as well as the physical derivations of many integrable nonlocal systems. Additional colloquium details can be found here, https://www.sc.fsu.edu/news-and-events/colloquium/colloquium-with-ziad-musslimani-2026-09-09 ? Colloquium recordings will be made available here, https://www.sc.fsu.edu/colloquium -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 4226 bytes Desc: not available URL: -------------- next part -------------- _______________________________________________ SC-Seminar-announce mailing list SC-Seminar-announce at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/sc-seminar-announce From eoas-seminar at lists.fsu.edu Tue Sep 8 15:21:12 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 8 Sep 2026 19:21:12 +0000 Subject: [Eoas-seminar] EOAS Colloquium on Friday, Sep. 11 at 3:00 PM Message-ID: Hi all, I am pleased to announce this coming Friday?s EOAS colloquium. Because the originally scheduled speaker is unable to give the colloquium, I decided, as the colloquium chair, to step in and entertain you without adding any burden to other faculty members. The work I will present addresses a problem that has been at the heart of statistical physics for the past 150 years, but most of the content is within the scope of college-level physics. The following is the information about the colloquium: Speaker: Dr. Zhaohua Wu, Florida State University Title: Where Is the Second Law of Thermodynamics Hiding?? An Answer to a 150-Year Puzzle Abstract: The Second Law of Thermodynamics tells us that heat always flows from hot to cold, that a shattered glass never reassembles itself, and that ink dropped into water spreads but never gathers back. This one-way nature of physical processes is what physicists call the "arrow of time.? But here lies a paradox that has troubled physicists for 150 years: the Newtonian mechanics governing molecular motion is perfectly time-symmetric. So how can a macroscopic world built from reversible microscopic motions be irreversible? This is Loschmidt's Paradox. The bridge between the microscopic and macroscopic worlds is the Boltzmann equation, whose construction requires a mathematical condition known as the Boltzmann-Grad (BG) limit. For more than 75 years, everyone interpreted this condition as a neutral technical assumption, unrelated to the Second Law. My work proves that interpretation is wrong. This condition actually defines the surface area of each small cell of gas. Because molecular motion is isotropic in three dimensions, a hotter cell has a larger surface area, and more molecules cross from the hotter cell into the cooler cell than in the opposite direction, carrying greater momentum and energy. The Second Law ? heat flows from hot to cold ? is not an additional postulate. It is the inevitable consequence of Newton's First Law: molecules in the absence of external forces continue their inertial motion. The Second Law was hiding inside the Boltzmann-Grad limit all along. Loschmidt's Paradox dissolves: the wrong question has been asked for 150 years. The framework connecting the microscopic to the macroscopic was never time-neutral to begin with. Newton's First Law, Newton's Second Law, and the Second Law of Thermodynamics are mutually compatible ? and Newton's First Law is the bridge between them. Time: 3:00 PM, Friday, September 18, 2026 Location: EOA 1044 Contact: Prof. Zhaohua Wu (zwu at fsu.edu) A flyer for the colloquium is also attached. Cheers, Zhaohua *************************************************************** Zhaohua Wu, Professor Earth, Ocean, and Atmospheric Science Building, Room 6041, and Center for Ocean-Atmospheric Prediction Studies, Room 295 Florida State University Tallahassee, Florida zwu at fsu.edu **************************************************************** -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: 270911_Zhaohua_wu.pdf Type: application/pdf Size: 159707 bytes Desc: 270911_Zhaohua_wu.pdf URL: From eoas-seminar at lists.fsu.edu Wed Sep 9 15:47:48 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Wed, 9 Sep 2026 19:47:48 +0000 Subject: [Eoas-seminar] MET Seminar - Tuesday September 15 - 3 PM - Prof. David Bodine (University of Oklahoma) Message-ID: Dear all, Please join us for the first Meteorology seminar of Fall 2026 coming Tuesday September 15 at 3 PM, given by Prof. David Bodine from University of Oklahoma. He will speak about ?Improving the Understanding and Prediction of Severe Thunderstorms Using Fast-Scanning Dual-Polarization Radar? (abstract below). Prof. Bodine will be here in person to present the seminar in RM 1044. 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 September 15 TIME: 3-4 PM, please join early for refreshments LOCATION: EOAS1044 SPEAKER: Prof. David Bodine (David's profile: https://www.ou.edu/ags/meteorology/people/faculty/david-bodine) We look forward to seeing you there! Best, Chelsea on behalf of the MET seminar committee (Allison, Michael and Chelsea) ========= Title: Improving the Understanding and Prediction of Severe Thunderstorms Using Fast-Scanning Dual-Polarization Radar Abstract: Thunderstorms and associated severe weather evolve on short time scales, ranging from tens of seconds to minutes. To understand the formation of severe weather, advanced radar technologies have been developed to acquire three-dimensional measurements (volume scans) in 30 s or less. The first rapid-scan, dual-polarization radar developed was the University of Oklahoma (OU) Rapid X-band Polarimetric Radar (RaXPol), which combines rapid mechanical rotation with frequency hopping to achieve rapid volume scans. Subsequently, the maturation of phased array radar technology has enabled dual-polarization phased array radars with unique adaptive scanning capabilities. Here, I focus on how these rapid-scan radars have been used to study the formation of severe weather and to characterize the kinematic and electrical properties of deep convection. Supercell thunderstorms produce a disproportionate number of strong tornadoes and very large hail compared to other convective modes. While hailstones grow and fall out over periods of 10?20 min, the microphysical processes and updraft evolution affecting hail growth evolve on shorter time scales. Using RaXPol observations, rapid changes in supercell structure are examined during tornado formation, resulting in less favorable conditions for hail growth. Additional hail cases are examined to understand factors governing hailstorm structure and changes in hail size. Predicting tornado formation is challenging because strongly rotating low-level mesocyclones (1 km above ground level) do not necessarily indicate that a tornado will form. Here, a comparative analysis of an early tornadogenesis failure period and the subsequent formation of a tornado is presented to examine differences in the intensity and alignment of the incipient tornado vortex and low- and mid-level mesocyclones. The evolution of convective updrafts and electrical properties is challenging to observe due to their rapid structural changes, visually manifested by bubbling cumulus clouds or frequent lightning discharges in mature thunderstorms. Using RaXPol data, discrete thermals within a mesoscale convective system (MCS) are tracked to document their structural evolution. Above the MCS cold pool and level of free convection, the broader MCS core updraft breaks down into discrete thermals. In upper-levels, these intense updraft cores branch and ascend into a V-shaped, straddling an intense cloud-top downdraft. Finally, the potential of dual-polarization phased array radars for detecting plasma associated with lightning discharges is examined. By leveraging adaptive scanning modes that permit targeted volumetric sector scans at sub-minute time scales, the capability to detect plasma signatures of in-cloud and cloud-to-ground lightning is demonstrated. --------------- Chaehyeon Chelsea Nam, Ph.D. Assistant Professor Department of Earth, Ocean, and Atmospheric Science (EOAS) Florida State University RM 5011, ccnam at fsu.edu https://chelsea-nam.github.io/ -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Fri Sep 11 10:36:46 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 11 Sep 2026 14:36:46 +0000 Subject: [Eoas-seminar] Fw: EOAS Colloquium on Friday, Sep. 11 at 3:00 PM In-Reply-To: References: Message-ID: Hi all, This is just a friendly remainder that we have an EOAS colloquium in EOA 1044 at 3:00 PM today. The detailed colloquium information is forwarded. Cheers, Zhaohua ________________________________ From: Zhaohua Wu Sent: Tuesday, September 8, 2026 3:21 PM To: eoas-seminar--- via Eoas-seminar ; 'Allison Wing' via info at coaps Subject: EOAS Colloquium on Friday, Sep. 11 at 3:00 PM Hi all, I am pleased to announce this coming Friday?s EOAS colloquium. Because the originally scheduled speaker is unable to give the colloquium, I decided, as the colloquium chair, to step in and entertain you without adding any burden to other faculty members. The work I will present addresses a problem that has been at the heart of statistical physics for the past 150 years, but most of the content is within the scope of college-level physics. The following is the information about the colloquium: Speaker: Dr. Zhaohua Wu, Florida State University Title: Where Is the Second Law of Thermodynamics Hiding?? An Answer to a 150-Year Puzzle Abstract: The Second Law of Thermodynamics tells us that heat always flows from hot to cold, that a shattered glass never reassembles itself, and that ink dropped into water spreads but never gathers back. This one-way nature of physical processes is what physicists call the "arrow of time.? But here lies a paradox that has troubled physicists for 150 years: the Newtonian mechanics governing molecular motion is perfectly time-symmetric. So how can a macroscopic world built from reversible microscopic motions be irreversible? This is Loschmidt's Paradox. The bridge between the microscopic and macroscopic worlds is the Boltzmann equation, whose construction requires a mathematical condition known as the Boltzmann-Grad (BG) limit. For more than 75 years, everyone interpreted this condition as a neutral technical assumption, unrelated to the Second Law. My work proves that interpretation is wrong. This condition actually defines the surface area of each small cell of gas. Because molecular motion is isotropic in three dimensions, a hotter cell has a larger surface area, and more molecules cross from the hotter cell into the cooler cell than in the opposite direction, carrying greater momentum and energy. The Second Law ? heat flows from hot to cold ? is not an additional postulate. It is the inevitable consequence of Newton's First Law: molecules in the absence of external forces continue their inertial motion. The Second Law was hiding inside the Boltzmann-Grad limit all along. Loschmidt's Paradox dissolves: the wrong question has been asked for 150 years. The framework connecting the microscopic to the macroscopic was never time-neutral to begin with. Newton's First Law, Newton's Second Law, and the Second Law of Thermodynamics are mutually compatible ? and Newton's First Law is the bridge between them. Time: 3:00 PM, Friday, September 18, 2026 Location: EOA 1044 Contact: Prof. Zhaohua Wu (zwu at fsu.edu) A flyer for the colloquium is also attached. Cheers, Zhaohua *************************************************************** Zhaohua Wu, Professor Earth, Ocean, and Atmospheric Science Building, Room 6041, and Center for Ocean-Atmospheric Prediction Studies, Room 295 Florida State University Tallahassee, Florida zwu at fsu.edu **************************************************************** -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: 270911_Zhaohua_wu.pdf Type: application/pdf Size: 159707 bytes Desc: 270911_Zhaohua_wu.pdf URL: From eoas-seminar at lists.fsu.edu Fri Sep 11 12:12:08 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 11 Sep 2026 16:12:08 +0000 Subject: [Eoas-seminar] COAPS Short Seminar Series Message-ID: COAPS Short Seminar Series 11:00 AM Sept. 14th 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. Mechanisms of cyclonic meanders formation in the western Yucatan Channel By Giovanni Durante Description: Cyclonic meanders in the western Yucatan Channel drive strong upwelling, isopycnal heave, and irreversible mixing that produces water with Yucatan Gulf Common Water (YGCW) characteristics, and frontal eddies propagating along the Loop Current western flank have been implicated in Loop Current detachment. The mechanism that triggers these meanders, however, remains poorly constrained. Here we combine moored velocity and hydrographic observations from the Canek array, satellite altimetry, and a free-running NEMO 1/36? and 1/108? simulations to characterize the meanders and diagnose their origin. The events are recurrent rather than isolated, and each follows a consistent sequence. Large anticyclones in the northwest Caribbean are persistently present before and during meander growth, and their arrival coincides with increased curvature and horizontal strain in the Yucatan Current. Barotropic conversion terms indicate energy transfer from the mean horizontal shear to the perturbation field during these events, while the Ertel potential vorticity budget points to the Campeche Bank slope as the source of the cyclonic anomaly, consistent with current?topography interaction. Lagrangian diagnostics show that interaction between coherent Caribbean eddies and the Yucatan Current precedes local frontal-eddy formation. The resulting frontal eddies carry recently formed YGCW into the northeastern Gulf along the Loop Current edge, linking boundary-current meandering to water-mass transformation and export. -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 3805 bytes Desc: not available URL: From eoas-seminar at lists.fsu.edu Sun Sep 13 14:38:42 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Sun, 13 Sep 2026 18:38:42 +0000 Subject: [Eoas-seminar] [Seminar-announce] Scientific Computing Colloquium with Mani Tyagi Message-ID: "Advancing Density Functional Theory for Periodic and Solvated Systems" Mani Tyagi Department of Scientific Computing 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 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 Wednesday, Sep 16, 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: Accurate prediction of electronic properties usually requires high-level electronic structure methods, whose computational cost often scales steeply with system size. I discuss two recently developed methods for achieving sufficiently accurate density functional theory (DFT) calculations of large periodic and solvated systems. In the first part, I discuss the extension of the embedded cluster density approximation (ECDA) to periodic systems. ECDA is a local correlation method formulated within the framework of DFT. It partitions the system's electron density into embedded clusters and evaluates high-level exchange?correlation contributions locally. These atom-centered corrections are summed to construct the system's total exchange?correlation energy. ECDA is a nearly black-box method applicable to systems with various bond types. Applications to hydrogen chains, conjugated polymers, graphene vacancies, and adsorption of CO and OH on TiO?(110) demonstrate the strengths and limitations of this local embedding method. In the second part, I introduce the spatial mixing of model potentials (SMMP) method, which constructs high-quality exchange?correlation potentials by spatially mixing the exchange potentials of exact exchange and the local density approximation. A key feature of SMMP is that the spatial mixing function is fully determined from the piecewise-linearity conditions of both the total energy and electron density. I then discuss the extension of SMMP to molecules in polarizable environments. We show that dielectric screening from the solvent enters the exchange?correlation potential seamlessly, leading to the correct asymptotic behavior of the exchange?correlation potential. Additional colloquium details can be found here: https://www.sc.fsu.edu/news-and-events/colloquium/colloquium-with-mani-tyagi-2026-09-16 ? Colloquium recordings will be made available here: https://www.sc.fsu.edu/colloquium -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 5742 bytes Desc: not available URL: -------------- next part -------------- _______________________________________________ SC-Seminar-announce mailing list SC-Seminar-announce at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/sc-seminar-announce From eoas-seminar at lists.fsu.edu Mon Sep 14 10:47:44 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 14 Sep 2026 14:47:44 +0000 Subject: [Eoas-seminar] EOAS Colloquium on Friday, Sep. 18 at 3:00 PM Message-ID: Hi all, I am happy to announce that we will have an EOAS colloquium this Friday, September 18, 2026. The speaker of this week's colloquium will be Dr. Natasha Dimova of the University of Alabama. The following is the information about the colloquium: Speaker: Dr. Natasha Dimova, The University of Alabama Title: Organic-rich subterranean estuaries (STE) along the northern Gulf of Mexico: implications for coastal groundwater quality Abstract: Land development can alter coastal morphology, shallow groundwater flow paths, and the composition of groundwater reaching the ocean. Subterranean estuaries (STEs) are increasingly recognized as biogeochemically reactive zones. Little is known about carbon and nutrient transformations along anoxic groundwater flow paths through deeper (2?3 m), old or recently buried organic-rich deposits. This gap is important because the amount and reactivity of organic matter can strongly regulate the attenuation of land-derived contaminants such as anthropogenic nitrogen and affect coastal water quality. In this talk, I will present results on biogeochemical transformations in an organic-rich STE in Mobile Bay, AL, which was formed when a salt marsh was buried during residential development in the 1970s. Field shallow geophysical exploration and sediment core collection show that these buried, organic-rich marsh deposits currently act as a conduit for shallow groundwater discharge. Nitrogen balance indicates that these deposits substantially attenuate anthropogenic NO?? transported toward the coast. However, degradation of the buried marsh organic matter releases DOC, DON, and NH?? into groundwater. We hypothesize that these products may ultimately reach coastal waters, increase the oxygen demand, and potentially contribute to coastal hypoxia. More recent experiments also demonstrate that these processes are sensitive to environmental conditions expected to change in shallow coastal aquifers. For example, we found that salinization alters both DOM composition and the mechanisms responsible for NH?? mobilization, while longer residence times lead to accumulation of increasingly degraded DOM. Time: 3:00 PM, Friday, September 18, 2026 Location: EOA 1044 Contact: Prof. Ming Ye (mye at fsu.edu) A flyer for the colloquium is also attached. Cheers, Zhaohua *************************************************************** Zhaohua Wu, Professor Earth, Ocean, and Atmospheric Science Building, Room 6041, and Center for Ocean-Atmospheric Prediction Studies, Room 295 Florida State University Tallahassee, Florida zwu at fsu.edu **************************************************************** -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: 270918_Natasha_Dimova.pdf Type: application/pdf Size: 153098 bytes Desc: 270918_Natasha_Dimova.pdf URL: From eoas-seminar at lists.fsu.edu Mon Sep 14 17:34:36 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 14 Sep 2026 21:34:36 +0000 Subject: [Eoas-seminar] Hopkins Defense - WED 9/16/26 10AM! Message-ID: Please join us for Mackenzie Hopkins MS Defense! Title: EXPLORATION OF THE VALENTINE VENTS: A NEWLY DISCOVERED SITE OF DIFFUSE, LOW-TEMPERATURE, SEDIMENT-HOSTED VOLCANIC ACTIVITY IN THE AMUNDSEN SEA, ANTARCTICA Name: Mackenzie Hopkins Date: September 16, 2026 from 10-1 Location: EOAS 2052 Major Professor: Dr. Lisa Herbert Abstract: New findings off the west coast of Antarctica reveal the possibility of magmatic influence at a marine sediment-hosted diffuse vent field in the Amundsen Sea. This previously undocumented site, coined the ?Valentine Vents?, exhibits a low pH and low salinity alongside high concentrations of dissolved CO2 in the pore water. Pore water Mn, Fe, Co, Ni, U, Zn, and rare earth elements (REE) Yb and Nd show high concentrations compared to typical sea water concentrations as well as sediments from nearby sites, while several elements (Cu, Cr, and Mo) are depleted. High levels of reactive iron and manganese were also observed. Initial physical observations coupled with preliminary geochemical findings suggest diffuse venting of low-oxygen, low-sulfur magmatic fluid enriched in CO2 and trace metals. This site, located in a local depression in the seafloor, may overlie a magmatic intrusion causing degassing and upward fluid transport through the glacial sediment cover. This is consistent with the known presence of continental vulcanism in this region of West Antarctic. The discovery of this site could lead to a paradigm shift in our understanding of the sources of trace metals necessary for primary production in the Amundsen Sea. Adea Arrison Sr. Academic Program Specialist Department of Earth, Ocean & Atmospheric Science [cid:c92cf98d-5888-4c6c-87fa-a24f1f4e79b5] -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image.png Type: image/png Size: 3433 bytes Desc: image.png URL: From eoas-seminar at lists.fsu.edu Tue Sep 15 14:33:58 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 15 Sep 2026 18:33:58 +0000 Subject: [Eoas-seminar] MET Seminar - Tuesday September 15 - 3 PM - Prof. David Bodine (University of Oklahoma) In-Reply-To: References: Message-ID: Dear all, Here is a reminder for the MET seminar in 30 minutes (3 PM start)! LOCATION: EOAS1044 SPEAKER: Prof. David Bodine (University of Oklahoma) See below for title and abstract. Best, Chelsea ________________________________ From: Eoas-seminar on behalf of eoas-seminar--- via Eoas-seminar Sent: Wednesday, September 9, 2026 3:47 PM To: eoas-seminar--- via Eoas-seminar ; info at coaps.fsu.edu Subject: [Eoas-seminar] MET Seminar - Tuesday September 15 - 3 PM - Prof. David Bodine (University of Oklahoma) Dear all, Please join us for the first Meteorology seminar of Fall 2026 coming Tuesday September 15 at 3 PM, given by Prof. David Bodine from University of Oklahoma. He will speak about ?Improving the Understanding and Prediction of Severe Thunderstorms Using Fast-Scanning Dual-Polarization Radar? (abstract below). Prof. Bodine will be here in person to present the seminar in RM 1044. 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 September 15 TIME: 3-4 PM, please join early for refreshments LOCATION: EOAS1044 SPEAKER: Prof. David Bodine (David's profile: https://www.ou.edu/ags/meteorology/people/faculty/david-bodine) We look forward to seeing you there! Best, Chelsea on behalf of the MET seminar committee (Allison, Michael and Chelsea) ========= Title: Improving the Understanding and Prediction of Severe Thunderstorms Using Fast-Scanning Dual-Polarization Radar Abstract: Thunderstorms and associated severe weather evolve on short time scales, ranging from tens of seconds to minutes. To understand the formation of severe weather, advanced radar technologies have been developed to acquire three-dimensional measurements (volume scans) in 30 s or less. The first rapid-scan, dual-polarization radar developed was the University of Oklahoma (OU) Rapid X-band Polarimetric Radar (RaXPol), which combines rapid mechanical rotation with frequency hopping to achieve rapid volume scans. Subsequently, the maturation of phased array radar technology has enabled dual-polarization phased array radars with unique adaptive scanning capabilities. Here, I focus on how these rapid-scan radars have been used to study the formation of severe weather and to characterize the kinematic and electrical properties of deep convection. Supercell thunderstorms produce a disproportionate number of strong tornadoes and very large hail compared to other convective modes. While hailstones grow and fall out over periods of 10?20 min, the microphysical processes and updraft evolution affecting hail growth evolve on shorter time scales. Using RaXPol observations, rapid changes in supercell structure are examined during tornado formation, resulting in less favorable conditions for hail growth. Additional hail cases are examined to understand factors governing hailstorm structure and changes in hail size. Predicting tornado formation is challenging because strongly rotating low-level mesocyclones (1 km above ground level) do not necessarily indicate that a tornado will form. Here, a comparative analysis of an early tornadogenesis failure period and the subsequent formation of a tornado is presented to examine differences in the intensity and alignment of the incipient tornado vortex and low- and mid-level mesocyclones. The evolution of convective updrafts and electrical properties is challenging to observe due to their rapid structural changes, visually manifested by bubbling cumulus clouds or frequent lightning discharges in mature thunderstorms. Using RaXPol data, discrete thermals within a mesoscale convective system (MCS) are tracked to document their structural evolution. Above the MCS cold pool and level of free convection, the broader MCS core updraft breaks down into discrete thermals. In upper-levels, these intense updraft cores branch and ascend into a V-shaped, straddling an intense cloud-top downdraft. Finally, the potential of dual-polarization phased array radars for detecting plasma associated with lightning discharges is examined. By leveraging adaptive scanning modes that permit targeted volumetric sector scans at sub-minute time scales, the capability to detect plasma signatures of in-cloud and cloud-to-ground lightning is demonstrated. --------------- Chaehyeon Chelsea Nam, Ph.D. Assistant Professor Department of Earth, Ocean, and Atmospheric Science (EOAS) Florida State University RM 5011, ccnam at fsu.edu https://chelsea-nam.github.io/ -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Tue Sep 15 15:33:14 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 15 Sep 2026 19:33:14 +0000 Subject: [Eoas-seminar] Updated - MS Defense WED 9/16 at 10! Message-ID: Please join us for Mackenzie Hopkins MS Defense. Title: EXPLORATION OF THE VALENTINE VENTS: A NEWLY DISCOVERED SITE OF DIFFUSE, LOW-TEMPERATURE, SEDIMENT-HOSTED VOLCANIC ACTIVITY IN THE AMUNDSEN SEA, ANTARCTICA Name: Mackenzie Hopkins Date: September 16, 2026 from 10-1 Eastern Time (US and Canada) Location: EOAS 2052 Major Professor: Dr. Lisa Herbert Zoom: https://fsu.zoom.us/j/94300256829 Meeting ID: 943 0025 6829 Abstract: New findings off the west coast of Antarctica reveal the possibility of magmatic influence at a marine sediment-hosted diffuse vent field in the Amundsen Sea. This previously undocumented site, coined the ?Valentine Vents?, exhibits a low pH and low salinity alongside high concentrations of dissolved CO2 in the pore water. Pore water Mn, Fe, Co, Ni, U, Zn, and rare earth elements (REE) Yb and Nd show high concentrations compared to typical sea water concentrations as well as sediments from nearby sites, while several elements (Cu, Cr, and Mo) are depleted. High levels of reactive iron and manganese were also observed. Initial physical observations coupled with preliminary geochemical findings suggest diffuse venting of low-oxygen, low-sulfur magmatic fluid enriched in CO2 and trace metals. This site, located in a local depression in the seafloor, may overlie a magmatic intrusion causing degassing and upward fluid transport through the glacial sediment cover. This is consistent with the known presence of continental vulcanism in this region of West Antarctic. The discovery of this site could lead to a paradigm shift in our understanding of the sources of trace metals necessary for primary production in the Amundsen Sea. Adea Arrison Sr. Academic Program Specialist Department of Earth, Ocean & Atmospheric Science [cid:613f8cc5-11bc-447a-8b9a-ff52bd08a4fa] -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image.png Type: image/png Size: 3433 bytes Desc: image.png URL: From eoas-seminar at lists.fsu.edu Wed Sep 16 10:06:34 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Wed, 16 Sep 2026 14:06:34 +0000 Subject: [Eoas-seminar] MET Seminar - Tuesday September 22 - 3 PM - Dr. Emily De Jong (Lawrence Livermore National Lab) Message-ID: Dear all, Please join us for the second Meteorology seminar of Fall 2026 this coming Tuesday, September 22, at 3 PM, given by Dr. Emily De Jong from Lawrence Livermore National Laboratory. She will speak about ?Bridging Scales in Cloud Microphysics from Observation to Simulation? (abstract below). Dr. De Jong will be joining us remotely, but we will meet in person to watch the seminar together in EOA 1044. A Zoom link is available for those with a medical excuse or approved work off-campus. Please contact Michael Diamond (msdiamond at fsu.edu) for the link. DATE: Tuesday September 22 TIME: 3-4 PM, please join early for refreshments LOCATION: EOA 1044 SPEAKER: Dr. Emily De Jong (https://ekdejong.github.io/) We look forward to seeing you there! Best, Michael on behalf of the MET seminar committee (Allison, Chelsea, & Michael) ========= Bridging Scales in Cloud Microphysics from Observation to Simulation Cloud microphysics?the processes governing droplets, ice, and aerosols at microscopic scales?remains a leading source of uncertainty in weather and climate predictions. These processes shape cloud structure, precipitation, and radiative feedbacks, yet they are neither resolvable in large-scale models nor directly constrained by most observing systems. Bridging the scale gap between observations, microphysical processes, and predictive models is a central challenge in atmospheric science. This talk presents a data-driven approach to integrating satellite observations, high-fidelity simulations, and subgrid-scale modeling to better constrain and represent cloud microphysics across scales. First, I will present recent work that applies machine learning to infer vertically resolved cloud properties from passive satellite observations, combining multi-modal data sources to reconstruct properties and structure that are not directly observed. This approach provides new observation-informed constraints across regimes and helps bridge the gap between sparse microphysical measurements and global passive observations. Next, I will introduce a complementary framework for learning reduced-order representations of cloud microphysics from high-fidelity particle-based simulations. This surrogate model discovers compact, physically-consistent, and performant representations of cloud droplet dynamics, enabling efficient and interpretable representations of warm cloud processes in weather and climate models. Together, these approaches illustrate a pathway for integrating observations and simulations within a unified data-driven framework. By linking space-based observation to vertically-resolved cloud properties and reduced-order parameterization to droplet-scale details, this work aims to improve the physical realism and predictive capability of atmosphere prediction systems. -- Dr. Michael S. Diamond Assistant Professor of Meteorology https://michael-s-diamond.github.io/camp/ [https://artsandsciences.fsu.edu/sites/g/files/upcbnu321/files/email-lockups/Earth%20Ocean%20and%20Atmospheric%20Science%20signature.png] -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Fri Sep 18 11:34:18 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 18 Sep 2026 15:34:18 +0000 Subject: [Eoas-seminar] Fw: EOAS Colloquium on Friday, Sep. 18 at 3:00 PM In-Reply-To: References: Message-ID: Hi all, This is a friendly reminder that we will have an EOAS colloquium today at 3:00 PM. Please see the attached information. Cheers, Zhaohua ________________________________ From: Eoas-seminar on behalf of eoas-seminar--- via Eoas-seminar Sent: Monday, September 14, 2026 10:47 AM To: eoas-seminar--- via Eoas-seminar Subject: [Eoas-seminar] EOAS Colloquium on Friday, Sep. 18 at 3:00 PM Hi all, I am happy to announce that we will have an EOAS colloquium this Friday, September 18, 2026. The speaker of this week's colloquium will be Dr. Natasha Dimova of the University of Alabama. The following is the information about the colloquium: Speaker: Dr. Natasha Dimova, The University of Alabama Title: Organic-rich subterranean estuaries (STE) along the northern Gulf of Mexico: implications for coastal groundwater quality Abstract: Land development can alter coastal morphology, shallow groundwater flow paths, and the composition of groundwater reaching the ocean. Subterranean estuaries (STEs) are increasingly recognized as biogeochemically reactive zones. Little is known about carbon and nutrient transformations along anoxic groundwater flow paths through deeper (2?3 m), old or recently buried organic-rich deposits. This gap is important because the amount and reactivity of organic matter can strongly regulate the attenuation of land-derived contaminants such as anthropogenic nitrogen and affect coastal water quality. In this talk, I will present results on biogeochemical transformations in an organic-rich STE in Mobile Bay, AL, which was formed when a salt marsh was buried during residential development in the 1970s. Field shallow geophysical exploration and sediment core collection show that these buried, organic-rich marsh deposits currently act as a conduit for shallow groundwater discharge. Nitrogen balance indicates that these deposits substantially attenuate anthropogenic NO?? transported toward the coast. However, degradation of the buried marsh organic matter releases DOC, DON, and NH?? into groundwater. We hypothesize that these products may ultimately reach coastal waters, increase the oxygen demand, and potentially contribute to coastal hypoxia. More recent experiments also demonstrate that these processes are sensitive to environmental conditions expected to change in shallow coastal aquifers. For example, we found that salinization alters both DOM composition and the mechanisms responsible for NH?? mobilization, while longer residence times lead to accumulation of increasingly degraded DOM. Time: 3:00 PM, Friday, September 18, 2026 Location: EOA 1044 Contact: Prof. Ming Ye (mye at fsu.edu) A flyer for the colloquium is also attached. Cheers, Zhaohua *************************************************************** Zhaohua Wu, Professor Earth, Ocean, and Atmospheric Science Building, Room 6041, and Center for Ocean-Atmospheric Prediction Studies, Room 295 Florida State University Tallahassee, Florida zwu at fsu.edu **************************************************************** -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: 270918_Natasha_Dimova.pdf Type: application/pdf Size: 153098 bytes Desc: 270918_Natasha_Dimova.pdf URL: -------------- next part -------------- _______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar From eoas-seminar at lists.fsu.edu Fri Sep 18 12:46:14 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 18 Sep 2026 16:46:14 +0000 Subject: [Eoas-seminar] EOAS Colloquium on Friday, Sep. 18 at 3:00 PM In-Reply-To: References:

Message-ID: Dear All, A zoom link (https://fsu.zoom.us/j/97163303059) is added for those who want to attend the seminar remotely. -Ming -------------- Ming Ye, Ph.D. Professor in Hydrogeology Department of Earth, Ocean, and Atmospheric Science Department of Scientific Computing From: Eoas-seminar On Behalf Of eoas-seminar--- via Eoas-seminar Sent: Friday, September 18, 2026 11:34 AM To: eoas-seminar--- via Eoas-seminar Subject: [Eoas-seminar] Fw: EOAS Colloquium on Friday, Sep. 18 at 3:00 PM Hi all, This is a friendly reminder that we will have an EOAS colloquium today at 3:00 PM. Please see the attached information. Cheers, Zhaohua ________________________________ From: Eoas-seminar > on behalf of eoas-seminar--- via Eoas-seminar > Sent: Monday, September 14, 2026 10:47 AM To: eoas-seminar--- via Eoas-seminar > Subject: [Eoas-seminar] EOAS Colloquium on Friday, Sep. 18 at 3:00 PM Hi all, I am happy to announce that we will have an EOAS colloquium this Friday, September 18, 2026. The speaker of this week's colloquium will be Dr. Natasha Dimova of the University of Alabama. The following is the information about the colloquium: Speaker: Dr. Natasha Dimova, The University of Alabama Title: Organic-rich subterranean estuaries (STE) along the northern Gulf of Mexico: implications for coastal groundwater quality Abstract: Land development can alter coastal morphology, shallow groundwater flow paths, and the composition of groundwater reaching the ocean. Subterranean estuaries (STEs) are increasingly recognized as biogeochemically reactive zones. Little is known about carbon and nutrient transformations along anoxic groundwater flow paths through deeper (2?3 m), old or recently buried organic-rich deposits. This gap is important because the amount and reactivity of organic matter can strongly regulate the attenuation of land-derived contaminants such as anthropogenic nitrogen and affect coastal water quality. In this talk, I will present results on biogeochemical transformations in an organic-rich STE in Mobile Bay, AL, which was formed when a salt marsh was buried during residential development in the 1970s. Field shallow geophysical exploration and sediment core collection show that these buried, organic-rich marsh deposits currently act as a conduit for shallow groundwater discharge. Nitrogen balance indicates that these deposits substantially attenuate anthropogenic NO?? transported toward the coast. However, degradation of the buried marsh organic matter releases DOC, DON, and NH?? into groundwater. We hypothesize that these products may ultimately reach coastal waters, increase the oxygen demand, and potentially contribute to coastal hypoxia. More recent experiments also demonstrate that these processes are sensitive to environmental conditions expected to change in shallow coastal aquifers. For example, we found that salinization alters both DOM composition and the mechanisms responsible for NH?? mobilization, while longer residence times lead to accumulation of increasingly degraded DOM. Time: 3:00 PM, Friday, September 18, 2026 Location: EOA 1044 Contact: Prof. Ming Ye (mye at fsu.edu) A flyer for the colloquium is also attached. Cheers, Zhaohua *************************************************************** Zhaohua Wu, Professor Earth, Ocean, and Atmospheric Science Building, Room 6041, and Center for Ocean-Atmospheric Prediction Studies, Room 295 Florida State University Tallahassee, Florida zwu at fsu.edu **************************************************************** -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Tue Sep 22 18:15:45 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 22 Sep 2026 22:15:45 +0000 Subject: [Eoas-seminar] [Seminar-announce] Scientific Computing Colloquium with Christopher Holmes Message-ID: "Burning issues: managing prescribed fire and air quality impacts in the eastern United States" Christopher D. Holmes Department of Earth, Ocean and Atmospheric Science (EOAS) 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 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 Wednesday, Sep 23, 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: Fires are widespread and frequent across the eastern United States, but their extent and impacts have been underestimated due to the difficulty of detecting small, short-duration fires from satellites. We use improved fire detections from geostationary satellite instruments (Advanced Baseline Imager (ABI) on GOES) and a new compilation of locally specific emission factors to develop a new biomass burning inventory for the eastern U.S. Using an atmospheric chemistry model to simulate air quality, we show that our new inventory better fits aerosol measurements than most previous inventories. The results support fire emissions that are higher than most previous estimates with air quality impacts 2-4 times larger than previous assessments. We discuss the implications for health and prescribed fire management. [X] Additional colloquium details can be found here, https://www.sc.fsu.edu/news-and-events/colloquium/colloquium-with-christopher-holmes-2026-09-23 ? Colloquium recordings will be made available here, https://www.sc.fsu.edu/colloquium -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 4892 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 Sep 23 09:43:07 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Wed, 23 Sep 2026 13:43:07 +0000 Subject: [Eoas-seminar] MET Seminar - Tuesday September 29 - 3 PM - Dr. Kaighin McColl (Harvard University) Message-ID: Dear all, Please join us for the third Meteorology seminar of Fall 2026 this coming Tuesday, September 29, at 3 PM, given by Dr. Kaighin McColl from Harvard University. He will speak about "An analytic theory of near-surface relative humidity over land? (abstract below). Dr. McColl will be joining us remotely, but we will meet in person to watch the seminar together in EOA 1044. A Zoom link is available for those with a medical excuse or approved work off-campus. Please contact Michael Diamond (msdiamond at fsu.edu) for the link. DATE: Tuesday September 29 TIME: 3-4 PM, please join early for refreshments LOCATION: EOA 1044 SPEAKER: Dr. Kaighin McColl (https://www.kaighin.org/) We look forward to seeing you there! Best, Michael on behalf of the MET seminar committee (Allison, Chelsea, & Michael) ========= An analytic theory of near-surface relative humidity over land Abstract: There is no simple explanation for the spatial structure of near-surface relative humidity (RH) over land, despite its importance for human health and ecosystem productivity. The explanation is not obvious: for example, why is the latitudinal profile of RH over land shaped like the letter ?W?, when both specific humidity and saturation specific humidity essentially decline monotonically from the equator to the poles? I will present a simple theory for RH that shows it is largely set by the land surface state, particularly soil moisture, and directly answers this question. The theory also naturally reconciles two apparently conflicting models of hydrological sensitivity, the fractional change in global mean precipitation per degree of global mean warming. Finally, the theory is used to address a basic question: do land surfaces get wetter or drier, on average, as the planet warms? It is widely believed that land surfaces rapidly dry, on average. Yet, the same climate models used to project strong aridification show no obvious signs of drastic drying in relevant land surface variables, such as soil water storage or ecosystem productivity. This discrepancy ? termed the ?aridity paradox? ? remains largely unresolved. I will show that the simple theory parsimoniously resolves the aridity paradox, and conclude that there is no reason to expect drier land surfaces, on average, as the planet warms. -- Dr. Michael S. Diamond Assistant Professor of Meteorology https://michael-s-diamond.github.io/camp/ [https://artsandsciences.fsu.edu/sites/g/files/upcbnu321/files/email-lockups/Earth%20Ocean%20and%20Atmospheric%20Science%20signature.png] -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Sat Sep 26 13:23:14 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Sat, 26 Sep 2026 17:23:14 +0000 Subject: [Eoas-seminar] [Seminar-announce] Scientific Computing Colloquium with Zlatko Sokolikj Message-ID: "Redistilling GRAPPA: A Bipartite Graph Formulation for Parallel MRI Reconstruction" Zlatko Sokolikj 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 Wednesday, Sep 30, 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: Magnetic resonance imaging (MRI) produces high-resolution images of soft tissue without ionizing radiation, but acquisition remains relatively slow because the scanner must sample raw spatial-frequency data, known as k-space, before reconstructing the final image. Parallel MRI accelerates this process by using multiple receiver coils to recover information from undersampled data. GRAPPA is a widely used k-space parallel imaging method that estimates missing samples through interpolation weights learned from a fully sampled autocalibration signal (ACS) region. This talk presents Bipartite-Graph GRAPPA (BG-GRAPPA), a graph-based view of GRAPPA reconstruction in which acquired multicoil k-space samples are represented as source nodes, missing samples are represented as target nodes, and calibrated interpolation weights form the edges between them. This reformulation preserves the scan-specific calibration structure of classical GRAPPA while making its source-to-target connectivity explicit. Using this graph view, the talk examines how reconstruction behavior changes across anatomy, acceleration, coil relationships, target classes, and spatial location in k-space. The results show that reconstruction difficulty is not uniform: performance varies across k-space, and improvements in magnitude image quality do not always correspond to improved complex k-space agreement. By making GRAPPA?s interpolation structure visible, BG-GRAPPA provides a framework for analyzing which connections matter, where calibration transfers reliably, and how more adaptive reconstruction strategies may be designed. Additional colloquium details can be found here: https://www.sc.fsu.edu/news-and-events/colloquium/colloquium-with-zlatko-sokolikj-2026-09-30 ? Colloquium recordings will be made available here: https://www.sc.fsu.edu/colloquium -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 5596 bytes Desc: not available URL: -------------- next part -------------- _______________________________________________ SC-Seminar-announce mailing list SC-Seminar-announce at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/sc-seminar-announce From eoas-seminar at lists.fsu.edu Mon Sep 28 09:24:28 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 28 Sep 2026 13:24:28 +0000 Subject: [Eoas-seminar] EOAS Colloquium, Friday, Oct. 2, 2026 @ 3:00 PM, EOA 1044 Message-ID: Hi all, I am happy to announce that we will have an EOAS colloquium this Friday, Oct. 2, 2026. The speaker of this week's colloquium will be Dr. Qusheng Jin of the University of Oregon. The following is the information about the colloquium: Speaker: Dr. Qusheng Jin, University of Oregon Title: From Laboratory Observations to Natural Environments: A New Coordinate System for Interpreting Environmental Biogeochemical Rates Abstract: Microorganisms drive many of the reactions that regulate carbon and sulfur cycling in soils, sediments, aquifers, and other environments. Yet rates measured in nature span more than six orders of magnitude, raising a basic question: by what criteria should an environmental microbial rate be considered ?slow? or ?fast?? In this talk, we develop a physiological frame of reference for interpreting environmental methanogenesis and sulfate reduction. Our results suggest that ?slow? and ?fast? are best interpreted relative to pathway-specific physiological references. We define a lower reference by evaluating microbial kinetic and thermodynamic constraints at experimentally observed substrate thresholds for catabolic activity, and an upper reference from independently compiled maximum-capacity rates. Together, these references define a physiological rate envelope. We then compare these laboratory-derived benchmarks with 217 published cell-specific rate measurements from 43 environmental studies. Rates measured under near-in-situ, unamended conditions cluster near the lower physiological reference, whereas experimentally stimulated rates shift toward maximum capacity. More broadly, this work addresses a long-standing Earth science challenge: how should laboratory-derived microbial traits be applied to natural environments? Rather than asking whether laboratory traits can predict the exact microbial rate at an individual site, we ask whether they can provide a common physiological coordinate system for interpreting rates across diverse environments. Our results suggest that this alternative use of laboratory physiology may help connect microbial traits with environmental observations and provide biologically grounded constraints for process-based biogeochemical models. Time: 3:00 PM, Friday, Oct. 2, 2026 Location: EOA 1044 Contact: Prof. Ming Ye (mye at fsu.edu) A flyer for the colloquium is also attached. *************************************************************** Zhaohua Wu, Professor Earth, Ocean, and Atmospheric Science Building, Room 6041, and Center for Ocean-Atmospheric Prediction Studies, Room 295 Florida State University Tallahassee, Florida zwu at fsu.edu **************************************************************** -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: 261002_Qusheng_Jin.pdf Type: application/pdf Size: 126440 bytes Desc: 261002_Qusheng_Jin.pdf URL: From eoas-seminar at lists.fsu.edu Tue Sep 29 08:00:00 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 29 Sep 2026 12:00:00 +0000 Subject: [Eoas-seminar] MET Seminar - Tuesday September 29 - 3 PM - Dr. Kaighin McColl (Harvard University) In-Reply-To: References: Message-ID: Hi all, Just a reminder to please join us in EOA 1044 for the MET seminar this afternoon (information below). Dr. McColl's talk will start at 3 PM, but refreshments will be served beforehand for those who arrive early! Cheers, Michael -- Dr. Michael S. Diamond Assistant Professor of Meteorology https://michael-s-diamond.github.io/camp/ [https://artsandsciences.fsu.edu/sites/g/files/upcbnu321/files/email-lockups/Earth%20Ocean%20and%20Atmospheric%20Science%20signature.png] ________________________________ From: Michael Diamond Sent: Wednesday, September 23, 2026 9:43 AM To: eoas-seminar--- via Eoas-seminar ; 'Allison Wing' via info at coaps Subject: MET Seminar - Tuesday September 29 - 3 PM - Dr. Kaighin McColl (Harvard University) Dear all, Please join us for the third Meteorology seminar of Fall 2026 this coming Tuesday, September 29, at 3 PM, given by Dr. Kaighin McColl from Harvard University. He will speak about "An analytic theory of near-surface relative humidity over land? (abstract below). Dr. McColl will be joining us remotely, but we will meet in person to watch the seminar together in EOA 1044. A Zoom link is available for those with a medical excuse or approved work off-campus. Please contact Michael Diamond (msdiamond at fsu.edu) for the link. DATE: Tuesday September 29 TIME: 3-4 PM, please join early for refreshments LOCATION: EOA 1044 SPEAKER: Dr. Kaighin McColl (https://www.kaighin.org/) We look forward to seeing you there! Best, Michael on behalf of the MET seminar committee (Allison, Chelsea, & Michael) ========= An analytic theory of near-surface relative humidity over land Abstract: There is no simple explanation for the spatial structure of near-surface relative humidity (RH) over land, despite its importance for human health and ecosystem productivity. The explanation is not obvious: for example, why is the latitudinal profile of RH over land shaped like the letter ?W?, when both specific humidity and saturation specific humidity essentially decline monotonically from the equator to the poles? I will present a simple theory for RH that shows it is largely set by the land surface state, particularly soil moisture, and directly answers this question. The theory also naturally reconciles two apparently conflicting models of hydrological sensitivity, the fractional change in global mean precipitation per degree of global mean warming. Finally, the theory is used to address a basic question: do land surfaces get wetter or drier, on average, as the planet warms? It is widely believed that land surfaces rapidly dry, on average. Yet, the same climate models used to project strong aridification show no obvious signs of drastic drying in relevant land surface variables, such as soil water storage or ecosystem productivity. This discrepancy ? termed the ?aridity paradox? ? remains largely unresolved. I will show that the simple theory parsimoniously resolves the aridity paradox, and conclude that there is no reason to expect drier land surfaces, on average, as the planet warms. -- Dr. Michael S. Diamond Assistant Professor of Meteorology https://michael-s-diamond.github.io/camp/ [https://artsandsciences.fsu.edu/sites/g/files/upcbnu321/files/email-lockups/Earth%20Ocean%20and%20Atmospheric%20Science%20signature.png] -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Wed Sep 30 08:00:00 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Wed, 30 Sep 2026 12:00:00 +0000 Subject: [Eoas-seminar] Greene MS Defense Message-ID: Good morning, Please join us for Jade Walker Greene's MS Defense on October 7th at 9 AM in EOAS 5067. Title: Geochemical Investigation of Sulfur Springs in the Woodville Karst Plain Name: Jade W. Greene Date: 10/7/2026 Time: 9AM - 12 PM Location: EOAS 5067 Major Professor: Seth Young Abstract: Sulfur cycling and redox evolution within sulfur springs in the Woodville Karst Plain are governed by groundwater residence time, water?rock chemical reactions, microbial sulfate reduction, and connate groundwater and seawater influx. The dynamics of these mechanisms are influenced by hydraulic controls, including fluctuations in the potentiometric surface of the Upper Floridan aquifer and associated pressure changes that regulate groundwater flow and mixing. This study uses physiochemical parameters, major ion chemistry, sulfur isotopes, and solid-phase bedrock geochemistry to identify distinct geochemical regimes between inland sulfate-reducing springs and coastal, marine-influenced systems. Inland sites, including St. Marks Sulfur Spring #2, Newport Spring, and Newport Park Well, display strongly reducing conditions characterized by low concentrations of dissolved oxygen, negative oxidation?reduction potentials, and large sulfur isotope fractionations consistent with prolific microbial sulfate reduction. Geochemical comparisons between aquifer lithology and spring waters indicate that sulfate at these sites is primarily derived from dissolution of sulfate-bearing minerals within deeper strata of the aquifer, suggesting longer residence time groundwater. In contrast, coastal sites such as Panacea Mineral Spring #1 and Shepherd Spring display elevated major ion concentrations and sulfur isotope compositions consistent with modern-day Gulf of Mexico seawater, indicating active mixing between marine and freshwater end members and shorter groundwater residence times. The results of this study reveal a geochemical distinction within the aquifer, where inland sulfur springs evolve along redox-driven pathways dominated by sustained sulfate loading and microbial sulfate reduction and coastal sites reflecting freshwater and seawater mixing. Incorporating isotopic and geochemical characteristics provides a framework for interpreting sulfur sources, redox evolution, and vulnerability to seawater intrusion in the Floridan aquifer system. Best, Adea Adea Arrison Sr. Academic Program Specialist???? Department of Earth, Ocean & Atmospheric Science [cid:fac50362-64fe-4a95-9820-bb83184d7b0f] -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: image.png Type: image/png Size: 3433 bytes Desc: image.png URL: From eoas-seminar at lists.fsu.edu Wed Sep 30 11:21:16 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Wed, 30 Sep 2026 15:21:16 +0000 Subject: [Eoas-seminar] MET Seminar - Tuesday October 6 - 3 PM - Dr. Joonsuk Kang (Columbia University) Message-ID: Dear all, Our next MET Seminar will be given by Dr. Joonsuk Kang, a postdoctoral fellow at Columbia University. He will speak about "Midlatitude circulation response to anthropogenic forcings: the importance of experimental design and model biases" (see full abstract below). Dr. Kang will be here in person to present the seminar in RM 1044. Zoom link is available for those with a medical excuse or approved work off-campus. Please contact Chlesea Nam (ccnam at fsu.edu) for the link. Dr. Kang will be around and available for meetings on Monday and Tuesday, so if you're interested in meeting with him, let Chelsea know. I will also follow up with you on MET graduate student lunch with the speaker. * DATE: Tuesday, October 6 * TIME: 3-4 PM, please join early for refreshments * LOCATION: EOAS1044 * SPEAKER: Dr. Joonsuk Kang (Joonsuk's personal website: https://sites.google.com/view/joonsuk/home) We look forward to seeing you there! Best, Chelsea on behalf of the MET seminar committee (Allison, Michael, and Chelsea) ========= Title: Midlatitude circulation response to anthropogenic forcings: the importance of experimental design and model biases Abstract Climate model experiments are our main tool for understanding the physical processes underlying the atmospheric circulation changes under anthropogenic forcings. Their usefulness, however, depends on choosing experiments suited to the question and on understanding model biases. First, I investigate how midlatitude zonal winds, or the jets, respond to CO2 forcing. Increasing CO2 is expected to shift the midlatitude jets poleward, but their relationship with global-mean surface warming remains unclear. Previous work focusing on abrupt CO2 quadrupling, or examining cross-model correlations, suggested that the poleward shift does not scale with warming. Here we revisit the question under more realistic transient 1%/yr CO2 forcing, and find that the jet shift scales linearly with warming as CO2 increases. The weak cross-model correlations reported previously can be explained by the jet shift's sensitivity to warming, which varies by a factor of three across models. Second, I investigate how midlatitude meridional winds, or the stationary waves, are impacted by aerosol forcing. Reanalysis data reveal significant Eurasian summertime stationary wave trends, and aerosol-forcing simulations reproduce the reanalysis pattern. However, all-forcing simulations systematically underestimate the reanalysis trends, which limits attribution to aerosols. The source of this discrepancy is investigated by applying the thermal wind balance framework and using reanalysis-nudging simulations. It is found that the discrepancy is linked to the thermal structure trend discrepancy over the North Atlantic, which excessively offsets the zonal temperature gradient at the surface. Together, these studies show how choosing the appropriate experiment and understanding model biases can improve physical insight into circulation responses to anthropogenic forcing. --------------- Chaehyeon Chelsea Nam, Ph.D. Assistant Professor Department of Earth, Ocean, and Atmospheric Science (EOAS) Florida State University RM 5011, ccnam at fsu.edu https://chelsea-nam.github.io/ -------------- next part -------------- An HTML attachment was scrubbed... URL: