USAP-DC

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The Role of Cyclonic Upwelling Eddies in Southern Ocean CO2 Flux Short Title: The Role of Cyclonic Upwelling Eddies in Southern Ocean CO2 Flux Start Date: 2021-06-01 End Date: 2024-05-30 Description/Abstract Between Sept. 1, 2022 and April 27, 2023, a Autonomous Surface Vehicle (ASV) Saildrone collected underway chemical, meteorological and physical data in the Indian Ocean, Southern Ocean. Measurements were made at high spatial and temporal resolution ( ~ 5-km and 1 hour) and include observations of ocean and atmosphere pCO2, air temperature and humidity, wind, ocean skin temperature, SST, salinity, ocean color (Chlorophyll α, CDOM), dissolved oxygen, and ocean current velocity between roughly 13.5°E and 82°E and between the Sub Tropical Front (STF) and the Subantarctic Front (SAF). The mission track spanned from the Agulhas Return Current south of South Africa to the northern boundary of the Antarctic Circumpolar Current downstream of the Kerguelen Plateau. The primary goal of the mission was to collect data within cyclonic and anticyclonic eddies to quantify CO2 fluxes to better understand physical processes (upwelling and downwelling) that that can contribute to carbon cycling in addition to the biological pump. Personnel Person Role Williams, Nancy Investigator Lindstrom, Eric Co-Investigator Carter, Brendan Co-Investigator Tamsitt, Veronica Researcher Bonin, Jennifer Researcher Chambers, Don Investigator and contact Funding Antarctic Ocean and Atmospheric Sciences Award # 2048840 AMD - DIF Record(s) USAP-2048840_1 Data Management Plan Williams_OPP_DataManagement.pdf Product Level: 1 (processed data) Datasets Repository Title (link) Format(s) Status NCEI Surface underway measurements of partial pressure of carbon dioxide (pCO2), sea surface temperature, sea surface salinity and other parameters from Autonomous Surface Vehicle (ASV) Saildrone 1039 (EXPOCODE 316420220901) in the Indian Ocean, Southern Ocean from 2022-09-01 to 2023-04-27 (NCEI Accession 0300658) None exists Publications Tamsitt, V. (2023). New insights into air-sea fluxes and their role in Subantarctic Mode Water formation. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 381(2249). (doi:10.1098/rsta.2022.0066) Keywords Amd/Us Argo Float CO2 DISSOLVED GASES OCEAN CHEMISTRY OCEAN MIXED LAYER PH Saildrone Southern Ocean Platforms and Instruments Ships