From eoas-seminar at lists.fsu.edu Fri Oct 2 10:36:18 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 2 Oct 2026 14:36:18 +0000 Subject: [Eoas-seminar] EOAS Colloquium, Friday, Oct. 2, 2026 @ 3:00 PM, EOA 1044 In-Reply-To: References: Message-ID: Hi all, This is a friendly reminder that we have an EOAS colloquium today. The colloquium information is as forwarded. Cheers, Zhaohua ________________________________ From: Eoas-seminar on behalf of eoas-seminar--- via Eoas-seminar Sent: Monday, September 28, 2026 9:24 AM To: eoas-seminar--- via Eoas-seminar Subject: [Eoas-seminar] EOAS Colloquium, Friday, Oct. 2, 2026 @ 3:00 PM, EOA 1044 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: From eoas-seminar at lists.fsu.edu Mon Oct 5 08:00:00 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 5 Oct 2026 12:00:00 +0000 Subject: [Eoas-seminar] Greene MS Defense - Reminder! 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:31b8d194-99fa-444b-8569-f1809e6e9d9b] -------------- 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 Mon Oct 5 09:04:39 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Mon, 5 Oct 2026 13:04:39 +0000 Subject: [Eoas-seminar] =?iso-8859-1?q?EOAS=A0colloquium=A0this_Friday=2C?= =?iso-8859-1?q?_Oct=2E_9=2C_2026_at_3=3A00_PM?= Message-ID: Hi all, I am happy to announce that we will have an EOAS colloquium this Friday, Oct. 9, 2026. This week's colloquium speaker will be Prof. Xiaozhou Ruan of Boston University. The following is the information about the colloquium: Speaker: Prof. Xiaozhou Ruan, Boston University Title: Coastal upwelling revisited: how do nutrients make their way to the surface? Abstract: Wind-driven upwelling of cold, nutrient-rich water is a key feature near the eastern boundaries of major ocean basins, with significant implications for the local physical environment and marine ecosystems. For a long time, wind-driven coastal upwelling has been examined within a simplified two-dimensional framework where the upwelling circulation is considered as a passive response to the surface offshore Ekman transport. As a result, a systematic understanding of the factors governing the spatial patterns of coastal upwelling and the pathways of nutrient transport remains elusive. Here, we delve into the physics of three-dimensional wind-driven coastal upwelling over the continental shelf and identify two leading-order pathways for nutrient upwelling: the residual circulation and eddy stirring associated with baroclinic instability. In particular, we demonstrate the factors that determine the spatial structures of the residual circulation and highlight the importance of eddy stirring, which works in synergy with the residual circulation in transporting nutrients in the coastal ocean. The results may help to improve our understanding of coastal upwelling systems and yield a more physical representation of coastal upwelling in coarse-resolution numerical models. Time: 3:00 PM, Friday, Oct. 9, 2026 Location: EOA 1044 Contact: Prof. Zhaohua Wu (zwu 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: 261009_Xiaozhou_Ruan.pdf Type: application/pdf Size: 123381 bytes Desc: 261009_Xiaozhou_Ruan.pdf URL: From eoas-seminar at lists.fsu.edu Tue Oct 6 12:19:10 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Tue, 6 Oct 2026 16:19:10 +0000 Subject: [Eoas-seminar] MET Seminar - Tuesday October 6 - 3 PM - Dr. Joonsuk Kang (Columbia University) In-Reply-To: References: Message-ID: Hi everyone, A friendly reminder for MET seminar this afternoon at 3 PM in RM1044. Today's seminar will be given by Dr. Joonsuk Kang from Columbia University in person on the topic of "Midlatitude circulation response to anthropogenic forcings: the importance of experimental design and model biases". Please find below email for the full abstract and more information about Dr. Kang. Best, Chelsea --------------- 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/ ________________________________ From: Chelsea Nam Sent: Wednesday, September 30, 2026 11:21 AM To: eoas-seminar--- via Eoas-seminar ; 'Allison Wing' via info at coaps Subject: MET Seminar - Tuesday October 6 - 3 PM - Dr. Joonsuk Kang (Columbia University) 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: From eoas-seminar at lists.fsu.edu Wed Oct 7 08:26:48 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Wed, 7 Oct 2026 12:26:48 +0000 Subject: [Eoas-seminar] [Seminar-announce] Scientific Computing Colloquium with Xian Mallory Message-ID: "Multimodal Graph Representation Learning for Single-Cell Cancer Genomics" Xian F. Mallory Department of Computer Science 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, Oct 7, 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: Single-cell sequencing makes it possible to characterize tumor heterogeneity at cellular resolution. However, each molecular modality has inherent limitations. Transcriptomic profiles of malignant and normal cells often overlap, copy number alteration (CNA) signals are low resolution and not comprehensive, and single-nucleotide variations (SNVs) are largely unobserved in low-coverage sequencing. This talk presents a graph-based framework for integrating complementary modalities. Cells are represented as nodes, one modality defines the node features, and a second modality defines the edge weights. A graph attention autoencoder then learns low-dimensional cell embeddings that jointly reflect both sources of information. Two applications of this framework will be discussed. SCGclust performs subclone clustering on ultra-shallow single-cell DNA sequencing data by combining read-count-based CNA features with SNV-derived cell similarity. It consistently outperforms methods that rely on a single signal. DeepMalignant identifies malignant cells in single-cell RNA sequencing data by combining expression signatures with CNA-derived cell similarity. Across 26 samples, four cancer types, and three sequencing platforms, it achieves the most favorable balance of precision and recall, and it generalizes to spatial transcriptomics. Ablation analyses confirm that both the multimodal edge construction and the attention mechanism contribute to performance. Additional colloquium details can be found here: https://www.sc.fsu.edu/news-and-events/colloquium/colloquium-with-xian-mallory-2026-10-07 ? Colloquium recordings will be made available here: https://www.sc.fsu.edu/news-and-events/seminars -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 5504 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 Thu Oct 8 23:15:53 2026 From: eoas-seminar at lists.fsu.edu (eoas-seminar at lists.fsu.edu) Date: Fri, 9 Oct 2026 03:15:53 +0000 Subject: [Eoas-seminar] =?iso-8859-1?q?Cancellation_of_EOAS=A0colloquium?= =?iso-8859-1?q?=A0this_Friday=2C_Oct=2E_9=2C_2026_at_3=3A00_PM?= In-Reply-To: References: Message-ID: Hi all, We will cancel tomorrow afternoon's EOAS colloquium due to the FSU main campus closure tomorrow afternoon. Sorry for the inconvenience. Cheers, Zhaohua ________________________________ From: 'Zhaohua Wu' via info at coaps Sent: Monday, October 5, 2026 9:04 AM To: eoas-seminar--- via Eoas-seminar ; 'Chelsea Nam' via info at coaps Subject: [INFO] EOAS colloquium this Friday, Oct. 9, 2026 at 3:00 PM Hi all, I am happy to announce that we will have an EOAS colloquium this Friday, Oct. 9, 2026. This week's colloquium speaker will be Prof. Xiaozhou Ruan of Boston University. The following is the information about the colloquium: Speaker: Prof. Xiaozhou Ruan, Boston University Title: Coastal upwelling revisited: how do nutrients make their way to the surface? Abstract: Wind-driven upwelling of cold, nutrient-rich water is a key feature near the eastern boundaries of major ocean basins, with significant implications for the local physical environment and marine ecosystems. For a long time, wind-driven coastal upwelling has been examined within a simplified two-dimensional framework where the upwelling circulation is considered as a passive response to the surface offshore Ekman transport. As a result, a systematic understanding of the factors governing the spatial patterns of coastal upwelling and the pathways of nutrient transport remains elusive. Here, we delve into the physics of three-dimensional wind-driven coastal upwelling over the continental shelf and identify two leading-order pathways for nutrient upwelling: the residual circulation and eddy stirring associated with baroclinic instability. In particular, we demonstrate the factors that determine the spatial structures of the residual circulation and highlight the importance of eddy stirring, which works in synergy with the residual circulation in transporting nutrients in the coastal ocean. The results may help to improve our understanding of coastal upwelling systems and yield a more physical representation of coastal upwelling in coarse-resolution numerical models. Time: 3:00 PM, Friday, Oct. 9, 2026 Location: EOA 1044 Contact: Prof. Zhaohua Wu (zwu 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: 261009_Xiaozhou_Ruan.pdf Type: application/pdf Size: 123381 bytes Desc: 261009_Xiaozhou_Ruan.pdf URL: