A5068930948- Marine and coastal ecosystems
- Oceanographic and Atmospheric Processes
- Ocean Acidification Effects and Responses
- Climate variability and models
- Atmospheric and Environmental Gas Dynamics
- Marine Biology and Ecology Research
- Coastal and Marine Management
- Optical Imaging and Spectroscopy Techniques
- Health, Environment, Cognitive Aging
- International Maritime Law Issues
- Tropical and Extratropical Cyclones Research
- Arctic and Russian Policy Studies
- Geology and Paleoclimatology Research
- Hydrocarbon exploration and reservoir analysis
- Meteorological Phenomena and Simulations
- Arctic and Antarctic ice dynamics
Scripps Institution of Oceanography
2017-2025
University of California, San Diego
2017-2025
Scripps College
2020
NSF National Center for Atmospheric Research
2019
Institute for Basic Science
2019
University of Colorado Boulder
2019
Princeton University
2019
Abstract The ocean has absorbed the equivalent of 39% industrial‐age fossil carbon emissions, significantly modulating growth rate atmospheric CO 2 and its associated impacts on climate. Despite importance sink to climate, our understanding causes interannual‐to‐decadal variability remains limited. This hinders ability attribute past behavior project future. A key period interest is 1990s, when did not grow as expected. Previous explanations this have focused internal or with coupled...
Abstract Models and observations of atmospheric potential oxygen (APO ≃ O 2 + 1.1 * CO ) are used to investigate the influence El Niño–Southern Oscillation (ENSO) on air‐sea exchange. An transport inversion APO data from Scripps flask network shows significant interannual variability in tropical fluxes that is positively correlated with Niño3.4 index, indicating anomalous ocean outgassing during Niño. Hindcast simulations Community Earth System Model (CESM) Institut Pierre‐Simon Laplace...
The ocean is the main source of thermal inertia in climate system. Ocean heat uptake during recent decades has been quantified using temperature measurements. However, these estimates all use same imperfect dataset and share additional uncertainty due to sparse coverage, especially before 2007. Here, we provide an independent estimate by measurements atmospheric oxygen (O2) carbon dioxide (CO2) - levels which increase as warms releases gases a whole thermometer. We show that gained 1.29 ±...
Abstract Large volcanic eruptions drive significant climate perturbations through major anomalies in radiative fluxes and the resulting widespread cooling of surface upper ocean. Recent studies suggest that these also important variability air‐sea carbon oxygen fluxes. By simulating Earth system using two initial‐condition large ensembles, with without aerosol forcing associated Mt. Pinatubo eruption June 1991, we isolate impact this event on physical biogeochemical properties The forced...
Abstract In the tropical Pacific, weak ventilation and intense microbial respiration at depth give rise to a low dissolved oxygen (O 2 ) environment that is thought be ventilated primarily by equatorial current system (ECS). The role of mesoscale eddies vertical mixing as potential pathways O supply in this region, however, remains poorly known due sparse observations coarse model resolution. Using an eddy resolving simulation ocean circulation biogeochemistry, we assess contribution these...
Global climate is regulated by the ocean, which stores, releases, and transports large amounts of mass, heat, carbon, oxygen. Understanding, monitoring, predicting exchanges these quantities across ocean’s surface, their interactions with atmosphere, horizontal vertical pathways through global oceans, are key for advancing fundamental knowledge improving forecasts longer-term projections climate, weather, ocean ecosystems. The existing observing system provides immense value science society...
Abstract The oceanic response to recent tropical eruptions is examined in Large Ensemble (LE) experiments from two fully coupled global climate models, the Community Earth System Model (CESM) and Geophysical Fluid Dynamics Laboratory (ESM2M), each forced by a distinct volcanic forcing dataset. Following simulated of Agung, El Chichón, Pinatubo, ocean loses heat gains oxygen carbon, general agreement with available observations. In both substantial surface cooling accompanied Niño–like...
Ocean deoxygenation due to anthropogenic warming represents a major threat marine ecosystems and fisheries. Challenges remain in simulating the modern observed changes dissolved oxygen (O 2 ). Here, we present an analysis of upper ocean (0-700m) recent decades from suite Coupled Model Intercomparison Project phase 6 (CMIP6) biogeochemical simulations. The physics simulations include both ocean-only (the Phase 1 2, OMIP1 OMIP2) coupled Earth system (CMIP6 Historical) configurations. We...
Abstract The Southern Ocean is rich in highly dynamic mesoscale eddies and substantially modulates global biogeochemical cycles. However, the overall surface subsurface effects of on biogeochemistry have not been quantified observationally at a large scale. Here, we co‐locate eddies, identified Meta3.2DT satellite altimeter‐based product, with Argo floats to determine dissolved inorganic carbon (DIC), nitrate, oxygen concentrations upper 1,500 m ice‐free Ocean, as well eddy fluxes this...
Abstract Tropical instability vortices (TIVs) have a major influence on the physics and biogeochemistry of equatorial Pacific. Using an eddy‐resolving configuration Community Earth System Model (CESM‐HR) Lagrangian particle tracking, we examine TIV impacts three‐dimensional structure variability dissolved oxygen (O 2 ) in upper Pacific water column. In CESM‐HR, simulated generation westward propagation TIVs from boreal summer through winter lead to seasonal oxygenation northern Pacific,...
Abstract Pinatubo erupted during the first decadal survey of ocean biogeochemistry, embedding its climate fingerprint into foundational biogeochemical observations and complicating interpretation long‐term change. Here, we quantify influence perturbation on externally forced multi‐decadal changes in key quantities using a large ensemble simulation Community Earth System Model designed to isolate effects Pinatubo, which cleanly captures response eruption. We find increased uptake apparent...
The ocean has absorbed the equivalent of 39% industrial-age fossil carbon emissions, significantly modulating growth rate atmospheric CO2 and its associated impacts on climate. Despite importance sink to climate, our understanding causes interannual-to-decadal variability remains limited. This hinders ability attribute past behavior project future. A key period interest is 1990s, when did not grow as expected. Previous explanations this have focused internal or with coupled atmosphere/ocean...
The ocean has absorbed the equivalent of 39% industrial-age fossil carbon emissions, significantly modulating growth rate atmospheric CO2 and its associated impacts on climate. Despite importance sink to climate, our understanding causes interannual-to-decadal variability remains limited. This hinders ability attribute past behavior project future. A key period interest is 1990s, when did not grow as expected. Previous explanations this have focused internal or with coupled atmosphere/ocean...
The Southern Ocean modulates global biogeochemical (BGC) cycles substantially, affecting biological production and the air-sea balance of carbon dioxide interior dissolved oxygen content. Concurrently, is rich in highly dynamic mesoscale eddies. These eddies have potential to alter local carbon, nutrient, distributions through eddy pumping, stirring, trapping. Additionally, strong westerly winds could result significant eddy-induced Ekman pumping counteracting effects. However, impact on...
The Southern Ocean is rich in highly dynamic mesoscale eddies and substantially modulates global biogeochemical cycles. However, the overall surface subsurface effects of on biogeochemistry have not been quantified observationally at a large scale. Here, we co-locate eddies, identified Meta3.2DT satellite altimeter-based product, with Argo floats to determine effect dissolved inorganic carbon (DIC), nitrate, oxygen concentrations upper 1500m ice-free (south 35°S), as well eddy fluxes this...
Cyclonic eddies pump DIC and nitrate upwards leading to less oceanic carbon uptake, anticyclonic have the opposite impact• low-oxygen water (anticyclones opposite) eddy trapping leads anomalies at depth • The net anomalous eddy-induced Southern Ocean uptake is ∼0.02±0.02Pg C yr -1 , with larger signals seasonally regionally
Earth and Space Science Open Archive This work has been accepted for publication in Journal of Geophysical Research - Oceans. Version RecordESSOAr is a venue early communication or feedback before peer review. Data may be preliminary. Learn more about preprints. preprintOpen AccessYou are viewing the latest version by default [v1]Seasonal Modulation Dissolved Oxygen Equatorial Pacific Tropical Instability...