From eoas-seminar at lists.fsu.edu Mon Nov 3 07:45:00 2025 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 3 Nov 2025 12:45:00 +0000 Subject: [Eoas-seminar] EOAS Colloquium Friday Nov 7, 3 PM: Dr. Daniel Klocke (MPI-M) Message-ID: Dear all, Please join us for our next EOAS colloquium on Friday November 7 at 3 PM, which will be given by Dr. Daniel Klocke who is the leader of the Computational Infrastructure and Model Development group at the Max Planck Institute for Meteorology in Hamburg, Germany. Dr. Klocke will speak about "Computing the Full Earth System at 1 km Resolution? (abstract below). Dr. Klocke will present in person in EOA 1044 but a Zoom link is available for those with approved work off-campus or a medical excuse. Please contact Allison Wing (awing at fsu.edu) for the Zoom link. If you would like to meet with Dr. Klocke, please also contact Allison Wing. DATE: Friday November 7 TIME: 3-4 PM LOCATION: EOA 1044 (speaker in person) SPEAKER: Dr. Daniel Klocke TITLE: Computing the Full Earth System at 1 km Resolution ABSTRACT: We present the first global simulation of the full Earth system at 1.25 km grid spacing, achieving highest time compression with an unseen number of degrees of freedom. Our model ICON captures the flow of energy, water, and carbon through key components of the Earth system: atmosphere, ocean, and land. To achieve this landmark simulation, we harness the power of 8192 GPUs on Alps and 4096 GPUs on JUPITER, two of the world?s largest GH200 superchip installations. We use both the Grace CPUs and Hopper GPUs by carefully balancing Earth?s components in a heterogeneous setup and optimizing acceleration techniques available in ICON?s codebase. We show how separation of concerns between scientists and software engineers can reduce the code complexity by half while increasing performance and portability. Our achieved time compression of 92 simulated days per day enables long studies including full interactions in the Earth system and outperforms earlier atmosphere-only simulations at a similar resolution. Until now it has not been possible to represent the interaction between the fine and fast scales that mediate the interactions between water and energy ? for instance the daytime heating over land that causes afternoon thunderstorms ? with the large and slow scales of the carbon reservoirs they influence. These reservoirs collectively define the land biosphere, which then go on to influence how the fast and fine scales develop in the future. The performance demonstrated allows to simulate two scenarios of future warming, each with three ensemble members on the currently largest machines. This has enormous and enduring potential to provide full global Earth system information on local scales about the implications of future warming for both people and eco-systems, information that otherwise would not exist. --------------------------------------------------- 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: -------------- next part -------------- A non-text attachment was scrubbed... Name: 110725_Daniel_Klocke.pdf Type: application/pdf Size: 132863 bytes Desc: 110725_Daniel_Klocke.pdf URL: From eoas-seminar at lists.fsu.edu Mon Nov 3 10:29:21 2025 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 3 Nov 2025 15:29:21 +0000 Subject: [Eoas-seminar] Reminder: MS Defense Message-ID: Hello all, Please join us for Riley Thomason?s MS Defense on Wednesday, November 5 @ 2:00 pm in EOAS 3067. Title: Tracing Storm Runoff from Hurricane Idalia in Two Springs in North Florida Using Oxygen and Hydrogen Isotopes Name: Riley Thomason Date: Wednesday, November 5, 2025, at 2:00 pm EST Advisor: Yang Wang Location: EOAS 3067 Abstract: Recharge in karst aquifer systems, such as the Floridan Aquifer, can occur rapidly through sinkholes, sinking streams, and conduits in underground limestone, making these systems susceptible to contamination from surface water. Analyses of various chemical and isotopic tracers in water samples from major springs in North and Central Florida have yielded a wide range of transit times, making it difficult to reliably assess how long it might take for contaminants to move through the aquifer and affect water quality at the springs. This study used time-series water isotope data collected before and after Hurricane Idalia to investigate the impact of storm runoff in Wakulla Spring and Sally Ward Spring in North Florida. Between August 28, 2023, and October 27, 2023, water samples from Wakulla Spring had ?18O and ?D values ranging from -3.8 to -3.6? and -19.0 to -13.5?, respectively, while samples from Sally Ward Spring had ?18O and ?D values ranging from -4.3 to -2.7? and -22.3 to -15.2?, respectively. The ?18O and ?D values of rainwater from Hurricane Idalia, which passed through the study area on August 30, 2023, were -15.2? and -108.5?, respectively, considerably lower than those of normal rainfall in the region. This distinctive isotopic composition provided a valuable hydrologic tracer for tracking storm-derived water in the regional groundwater system. Following the hurricane, event water was detected at Sally Ward Spring within one day, whereas it took 10-12 days for the event water to appear at Wakulla Spring. A second isotopic signal was observed at Sally Ward Spring 12-19 days later, indicating complex recharge and flow dynamics. These observations suggest that although the two springs are closely located, they respond quite differently to major storm events. At Wakulla Spring, the estimated 10-12-day transit time for event water agrees with previous estimates based on dye tracing and stable isotope measurements. Both springs showed elevated particulate matter concentrations following Hurricane Idalia. USGS records also documented a five-day period of increased gauge height at Wakulla Spring, consistent with enhanced runoff and aquifer discharge. However, isotope mass balance calculations indicate that even at peak discharge, event water made up less than 1% of total discharge at Wakulla Spring and about 7% at Sally Ward Spring. These results demonstrate that discharges at both Wakulla and Sally Ward Springs are dominated by pre-event water stored in the aquifer, even following a major storm. Best, Adea Adea Arrison Sr. Academic Program Specialist Department of Earth, Ocean & Atmospheric Science [cid:image001.png at 01DC4CAC.B7097B10] -------------- 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: From eoas-seminar at lists.fsu.edu Mon Nov 3 11:04:49 2025 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 3 Nov 2025 16:04:49 +0000 Subject: [Eoas-seminar] PhD Defense - William Curtis Message-ID: Hello all, Please join us for William Curtis' PhD Defense on Thursday, November 6 @ 10:00 am EST, in EOAS 5067 and on zoom. Title: NON-THUNDERSTORM CUMULUS ELECTRIFICATION ASSESSMENT AND PREDICTIVE ANALYSIS USING MACHINE LEARNING METHODS Name: William Curtis Date: Thursday, November 6, 2025, at 10:00 am EST Major Professor: Henry Fuelberg Location: EOAS 5067 Zoom: https://fsu.zoom.us/j/99741098539 Abstract: The electrification of developing convective, non-thunderstorm cumulus clouds is investigated utilizing a combination of a rapidly scanning dual-pol radar and a dense network of surface field mills that measure the vertical electric potential gradient. Current launch safety criteria employ a combination of cloud top temperature and potential gradient threshold values to assess the potential for natural and triggered lightning. A novel dataset of clouds within the field mill network is constructed and investigated based on the behavior of the surrounding field mill sites to assess the electrification. Field mill data is analyzed using gridded 1-minute averaged potential gradients. Previous research utilized various reflectivity thresholds for different temperature levels to differentiate between electrified clouds, lightning producing clouds, and different electrification thresholds. Reflectivity data at different temperature levels and hydrometeor classification algorithm output are utilized in concert with cloud top temperature to represent cloud characteristics and explain surface electric field behavior. This study utilizes supervised machine learning models and explainable AI diagnostic tools to provide a comparison between radar parameters and their association with surface potential gradients. Hydrometeor classification algorithm output provides a substantial benefit to cloud classification based on surface potential gradients and predicting the magnitude of negative potential gradient values through the vertical ice class of hydrometeors. Cloud top temperatures colder than -5?C indicate steadily greater likelihood for strong negative potential gradients, and increasing vertical ice further contributes to stronger negative potential gradients. The application of machine learning and hydrometeor classification produces novel insight into the dependencies between radar parameters and their diagnostic capabilities for assessing electrification in developing convective clouds. Best, Adea Adea Arrison Sr. Academic Program Specialist Department of Earth, Ocean & Atmospheric Science [cid:image001.png at 01DC4CB1.608D2F20] -------------- 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: From eoas-seminar at lists.fsu.edu Tue Nov 4 07:45:00 2025 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 4 Nov 2025 12:45:00 +0000 Subject: [Eoas-seminar] TODAY 3 PM: Prof. Michael Bell (CSU) and Prof. James Ruppert (OU) In-Reply-To: References: Message-ID: Dear all, This is a reminder of today?s MET seminar, featuring two short presentations by Prof. Michael Bell from Colorado State University and Prof. James Ruppert from University of Oklahoma. See below for details. 3 pm in 1044, 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: Wednesday, October 29, 2025 at 9:46?AM To: Eoas-seminar Subject: [Eoas-seminar] MET Seminar Nov 4, 3 PM: Prof. Michael Bell (CSU) and Prof. James Ruppert (OU) Dear all, Please join us for our next Meteorology seminar on Tuesday November 4 at 3 PM. This will be a special combined MET seminar which will feature shorter presentations by two visiting speakers: Prof. Michael Bell from Colorado State University and Prof. James Ruppert from University of Oklahoma. Prof. Bell will speak about "Relationships between Rotation and Rainfall in African Easterly Waves? and Prof. Ruppert will speak about "Interpreting longwave radiative feedback from stratiform and anvil clouds?. Their abstracts are below. Both speakers will present in person in EOA 1044 but a Zoom link is available for those with approved work off-campus or a medical excuse. Please contact Allison Wing (awing at fsu.edu) for the Zoom link. DATE: Tuesday November 4 TIME: 3-4 PM, please join early for refreshments LOCATION: EOA 1044 (speakers in person) SPEAKER: Prof. Michael Bell & Prof. James Ruppert SPEAKER 1: Prof. Michael Bell TITLE: Relationships between Rotation and Rainfall in African Easterly Waves ABSTRACT: Recent observations have shown a positive correlation between rotating flow and higher rain rates associated with mesoscale convective organization. The ability of convection to enhance rotation can be understood through the direct effects of vortex stretching and convective heating, but the reverse influence of rotation on convection is more complicated and indirect. Multiple physical mechanisms can lead to enhanced convection associated with mesoscale potential vorticity (PV) anomalies, including isentropic uplift, mesoscale pressure perturbations, boundary layer pumping, moisture advection, and interactions with larger scale environmental flow. These mechanisms are not mutually exclusive, leading to complex vertical motion patterns that are sometimes difficult to ascribe to any single factor. This talk will explore these mechanisms in African Easterly Waves (AEWs) which are broad, weakly rotating systems in the tropical Atlantic. AEWs contribute substantially to the total rainfall over the tropical Atlantic and Caribbean and also serve as the precursor disturbances for 85% of major hurricanes. The relationships between PV, moisture, and convective organization are examined using aircraft observations from the NASA 2006 NAMMA (NASA African Monsoon Multidisciplinary Analysis) and 2022 CPEX-CV (Convective Processes Experiment - Cabo Verde) field campaigns and idealized modeling. Observations show that deep convection is organized into different regions within AEWs associated with higher mid-level moisture and PV interacting with the environmental flow. Idealized modeling experiments show that boundary layer pumping associated with the rotating flow is weak in AEWs, but becomes progressively more important with increased rotation and smaller circulations. A positive feedback between rotation and rainfall, in which PV promotes convection that further amplifies the PV through convective heating, becomes more effective with increased rotation and can lead to cyclogenesis and hurricane development. SPEAKER 2: Prof. James Ruppert TITLE: Interpreting longwave radiative feedback from stratiform and anvil clouds ABSTRACT: Our emphasis on distinct tropical cloud types has evolved over the decades with advancements in our understanding, especially of the complex links between the convective scale and larger scales. Early undilute plume views of tropical convection emphasized deep cumulonimbi and their associated latent heating as a fundamental component of the ascending branch of the Hadley cell. Later, emphasis on tropical shallow and congestus clouds increased as we better grasped the acute sensitivity of tropical convection to water vapor in the free troposphere, prompting major reconsiderations for how to represent moist convection in numerical models. In this context, we advocate for revisiting the role of stratiform and anvil clouds: we argue that these clouds play an essential role in convective-scale dynamics in the tropics through their longwave radiative forcing. The magnitude of longwave radiative forcing relative to latent heating within these clouds is very large, significantly affecting both buoyancy and circulation. It increases moist entropy and suppresses evaporatively driven mesoscale downdrafts, resulting in greater upward motion per unit precipitation. This effect fosters growth of the parent convective system, constituting a positive feedback. The radiative forcing of these clouds, which are much larger and longer-lived than their parent deep convective elements, acts as an important link between the convective scale and larger scales. Hence, while stratiform and anvil clouds are indeed biproducts of deep convection, they should also be recognized as active players in tropical organized convection. Consequently, any comprehensive model or parameterization of tropical convection must account for the bidirectional forcing between deep convective systems and their attendant stratiform and anvil cloud signatures. 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 Nov 4 09:44:17 2025 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 4 Nov 2025 14:44:17 +0000 Subject: [Eoas-seminar] Prospectus MS Defense - Mackenzie Hopkins Message-ID: Hello, Please join us for Mackenzie Hopkins's Master Prospectus Defense on Thursday, November 6th. 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: 11/6/2025 Time: 1:00 PM Location: EOAS 5067 Advisor: 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. Best, Adea Adea Arrison Sr. Academic Program Specialist Department of Earth, Ocean & Atmospheric Science [cid:image001.png at 01DC4D6F.95F062E0] -------------- 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: From eoas-seminar at lists.fsu.edu Thu Nov 6 09:29:15 2025 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Thu, 6 Nov 2025 14:29:15 +0000 Subject: [Eoas-seminar] Will Curtis PhD defense today POSTPONED Message-ID: Unfortunately, Will Curtis PhD defense today has to be postponed due to the external member (University Representative) being unable to attend suddenly today. The rescheduling will be announced soon. Bob Hart (on behalf of Henry Fuelberg) -------------- next part -------------- An HTML attachment was scrubbed... URL: From eoas-seminar at lists.fsu.edu Fri Nov 7 08:04:30 2025 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 7 Nov 2025 13:04:30 +0000 Subject: [Eoas-seminar] TODAY 3 PM: EOAS Colloquium - Dr. Daniel Klocke (MPI-M) In-Reply-To: References: Message-ID: Dear all, This is a reminder of today's EOAS colloquium at 3 pm in 1044 given by Dr. Daniel Klocke from the Max Planck Institute for Meteorology in Germany. He will present the first global simulation of the full Earth system at 1.25 km grid spacing, which should be of interest to all in EOAS - so I very much hope to see you all there! Cheers, Allison Get Outlook for iOS ________________________________ From: Eoas-seminar on behalf of eoas-seminar--- via Eoas-seminar Sent: Monday, November 3, 2025 7:45 AM To: Eoas-seminar Subject: [Eoas-seminar] EOAS Colloquium Friday Nov 7, 3 PM: Dr. Daniel Klocke (MPI-M) Dear all, Please join us for our next EOAS colloquium on Friday November 7 at 3 PM, which will be given by Dr. Daniel Klocke who is the leader of the Computational Infrastructure and Model Development group at the Max Planck Institute for Meteorology in Hamburg, Germany. Dr. Klocke will speak about "Computing the Full Earth System at 1 km Resolution? (abstract below). Dr. Klocke will present in person in EOA 1044 but a Zoom link is available for those with approved work off-campus or a medical excuse. Please contact Allison Wing (awing at fsu.edu) for the Zoom link. If you would like to meet with Dr. Klocke, please also contact Allison Wing. DATE: Friday November 7 TIME: 3-4 PM LOCATION: EOA 1044 (speaker in person) SPEAKER: Dr. Daniel Klocke TITLE: Computing the Full Earth System at 1 km Resolution ABSTRACT: We present the first global simulation of the full Earth system at 1.25 km grid spacing, achieving highest time compression with an unseen number of degrees of freedom. Our model ICON captures the flow of energy, water, and carbon through key components of the Earth system: atmosphere, ocean, and land. To achieve this landmark simulation, we harness the power of 8192 GPUs on Alps and 4096 GPUs on JUPITER, two of the world?s largest GH200 superchip installations. We use both the Grace CPUs and Hopper GPUs by carefully balancing Earth?s components in a heterogeneous setup and optimizing acceleration techniques available in ICON?s codebase. We show how separation of concerns between scientists and software engineers can reduce the code complexity by half while increasing performance and portability. Our achieved time compression of 92 simulated days per day enables long studies including full interactions in the Earth system and outperforms earlier atmosphere-only simulations at a similar resolution. Until now it has not been possible to represent the interaction between the fine and fast scales that mediate the interactions between water and energy ? for instance the daytime heating over land that causes afternoon thunderstorms ? with the large and slow scales of the carbon reservoirs they influence. These reservoirs collectively define the land biosphere, which then go on to influence how the fast and fine scales develop in the future. The performance demonstrated allows to simulate two scenarios of future warming, each with three ensemble members on the currently largest machines. This has enormous and enduring potential to provide full global Earth system information on local scales about the implications of future warming for both people and eco-systems, information that otherwise would not exist. --------------------------------------------------- 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: -------------- next part -------------- _______________________________________________ Eoas-seminar mailing list Eoas-seminar at lists.fsu.edu https://lists.fsu.edu/mailman/listinfo/eoas-seminar -------------- next part -------------- A non-text attachment was scrubbed... Name: 110725_Daniel_Klocke.pdf Type: application/pdf Size: 132863 bytes Desc: 110725_Daniel_Klocke.pdf URL: