Meeting Presentations
AGU Annual Meeting 2025
This December, AGU25 returns to New Orleans, LA 15-19 December 2025, with the theme “Where Science Connects Us.”
Each year, AGU’s annual meeting, the largest gathering of Earth and space scientists, convenes 25,000+ attendees from 100+ countries to share research and connect with friends and colleagues. Scientists, educators, policymakers, journalists and communicators attend AGU25 to better understand our planet and environment, opening pathways to discovery, opening greater awareness to address climate change, opening greater collaborations to lead to solutions and opening the fields and professions of science to a whole new age of justice equity, diversity, inclusion and belonging.
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Analytical Estimation of Carbon Dioxide Fluxes and Information Content from OCO-2 Satellite Data
Nesser, H.O., Bowman, K., Bloom, A., Byrne, B., Carroll, D., Liu, J., Menemenlis, D., Thill, M.D., Murray, L.T., Bertolacci, M., and Sulprizio, M.P. Satellite measurements of carbon dioxide (CO2) provide an important tool to improve our understanding of the global carbon cycle in a changing climate. Inverse methods that use these observations to estimate the surface-atmosphere ... MORE »▲
Barystatic Sea-Level Uncertainty Induced by Geocenter Motion in Satellite Gravimetry
Zhang, W., Yang, F., and Luo, Z. The Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report (AR6) underscores that mass-driven (barystatic) sea-level rise accounted for 44% of total sea level increase from 1993-2018, making its precise measurement essential for ... MORE »▲
Changes in the Oceanic Carbon Storage Due to Anthropogenic Carbon Input over the Past Three Decades
Zemskova, V., and Hong, F. Oceans play a critical role in moderating atmospheric carbon dioxide levels as they are one of the largest carbon sinks. Understanding where carbon is stored and how it circulates within the ocean interior is instrumental to estimating the ocean’s... MORE »▲
Contribution of Individual Surface Forcings to Observed Southern Ocean Temperature and Salinity Trends
Luongo, M., Armour, K., and Johnson, G.C. While most coupled climate models predict that the Southern Ocean (SO) should have warmed since 1980, SO sea surface temperatures (SSTs) have in fact cooled over that same period. Many studies have investigated whether this model mismatch might be... MORE »▲
Coupling Biogeochemical Transformations Across the Land-Ocean-Aquatic-Continuum (LOAC) Using the ECCO-Darwin Global Ocean-Biogeochemistry Model and CARDAMOM Terrestrial Carbon Model
Savelli, R., Carroll, D., Menemenlis, D., Bilir, T.E., Bloom, A.A., Dutkiewicz, S., Bowman, K., and Simard, M. The terrestrial-aquatic interface plays a pivotal role in transforming carbon exported to the ocean. The accounting of sinks and sources of carbon across the Land-to-Ocean Aquatic Continuum (LOAC) is often absent, ... MORE »▲
Impact of Dynamically Balanced Coupled Model Initialization on S2S Climate Prediction
Al Fahad, A., Molod, A., Menemenlis, D., Trayanov, A.I., and Zhang, H. Effective initialization of coupled models is a primary source of prediction skill for numerical weather prediction and subseasonal-to-seasonal (S2S) climate forecasting. However, initializing models with component states from independent ... MORE »▲
Investigating Ventilation in the Amundsen Sea, Antarctica Using an Eddy-Permitting Regional Ocean Model
Kowalski, L., Nakayama, Y., and Loose, B. The Winter Water mass reveals the role of deep winter mixing on 'warm' and 'fresh' shelf regions of the West Antarctic. In this study, we investigate how the production of Winter Water within the Amundsen Sea leads to ventilation by introducing ... MORE »▲
Linking Mackenzie River Discharge to Early Sea Ice Formation in the Beaufort Sea
Zahn, M., Fournier, S., Fenty, I.G., Steele, M., Wood, M., and Gaube, P. Salinity controls upper ocean stratification in the Arctic and plays a critical role in sea ice formation by modulating vertical heat exchange and surface cooling. While freshwater discharge from large Arctic rivers is an important component of ... MORE »▲
Melt from Sermeq Kujalleq, Greenland’s Most Active Glacier, Drives Vigorous Nutrient Upwelling and Enhanced Coastal Productivity
Wood, M., Carroll, D., Fenty, I.G., Bertin, C., Darby, B., Dutkiewicz, S., Hopwood, M.J., Khazendar, A., Meire, L., Oliver, H., Parker, T., and Willis, J.K. Over the past several decades, increasing Arctic air temperatures have caused extensive melt on the surface of the Greenland Ice Sheet. Unlike terrestrial runoff, surface ice-sheet melt drains through glacier cracks and crevasses and is often ... MORE »▲
PO.DAAC’s First Batch Release of Virtual Datasets for Rapid Access and Analysis
Henze, D., Armstrong, E.M., Gangl, M., Kaufman, D.E., and Ou, C. Technology to create virtual datasets (VDSs) has matured to the point where NASA DAACs (Distributed Active Archive Centers) can begin utilize it, resulting in significant benefits to users in terms of ease and speed of access to entire data sets ... MORE »▲
Recent Changes in Global Ocean N2O Fluxes and Their Relationship to Ocean Climate Variability: A Modeling Study
Feng, Y. The ocean plays an important role in regulating atmospheric N2O levels, however, its contribution remains poorly constrained. Here, we implemented an N2O module into the Estimating Circulation and Climate of the Ocean-Darwin ... MORE »▲
Rectifying and Understanding Significant Biases in Passive-Microwave-Derived Antarctic Sea Ice Concentration (Invited)
Horvat, C., Tavri, A., Mohammadnezhad, K., Nguyen, A., and Heimbach, P. lgorithms that invert sea ice concentration (SIC) from brightness temperature retrievals by passive microwave (PM) satellites are critical and long-standing tools for understanding polar change. Yet in Antarctica, differing algorithms and sensors ... MORE »▲