edu.ucar.opensky::articles:42115 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-24T19:02:22.154950 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.net/ark:/85065/d7gf0zsv https://doi.org/10.24381/cds.67e8eeb7 https Related Dataset #1 ORAS5 global ocean reanalysis monthly data from 1958 to present https://doi.org/10.24381/cds.f17050d7 https Related Dataset #2 ERA5 monthly averaged data on single levels from 1940 to present https://doi.org/10.5281/zenodo.5482547 https Related Dataset #3 SeaFlux: harmonised sea-air CO2 fluxes from surface pCO2 data products using a standardised approach https://doi.org/10.6075/J0B27ST5 https Related Dataset #4 SOCCOM float data - Snapshot 2020-12-22. In Southern Ocean Carbon and Climate Observations and Modeling (SOCCOM) Float Data ArchiveSouthern Ocean Carbon and Climate Observations and Modeling (SOCCOM) Float Data Archive https://doi.org/10.7289/V5C8276M https Related Dataset #5 ETOPO1 1 Arc-Minute Global Relief Model https://doi.org/10.5281/zenodo.3744275 https Related Software #1 PyCO2SYS: marine carbonate system calculations in Python Carbon outgassing in the Antarctic circumpolar current is supported by Ekman transport from the sea ice zone in an observation‐based seasonal mixed‐layer budget 2023-11-01T00:00:00Z publication https://n2t.net/ark:/85065/d7gf0zsv https://doi.org/10.1029/2023JC019815 J. Sauvé author Gray, A. R. author Channing Prend author Bushinsky, S. author Riser, S. author UCAR/NCAR - Library publisher Despite its importance for the global cycling of carbon, there are still large gaps in our understanding of the processes driving annual and seasonal carbon fluxes in the high&#8208;latitude Southern Ocean. This is due in part to a historical paucity of observations in this remote, turbulent, and seasonally ice&#8208;covered region. Here, we use autonomous biogeochemical float data spanning 6 full seasonal cycles and with circumpolar coverage of the Southern Ocean, complemented by atmospheric reanalysis, to construct a monthly climatology of the mixed layer budget of dissolved inorganic carbon (DIC). We investigate the processes that determine the annual mean and seasonal cycle of DIC fluxes in two different zones of the Southern Ocean&#8212;the Sea Ice Zone (SIZ) and Antarctic Southern Zone (ASZ). We find that, annually, mixing with carbon&#8208;rich waters at the base of the mixed layer supplies DIC which is, in the ASZ, either used for net biological production or outgassed to the atmosphere. In contrast, in the SIZ, where carbon outgassing and the biological pump are weaker, the surplus of DIC is instead advected northward to the ASZ. In other words, carbon outgassing in the southern Antarctic Circumpolar Current (ACC), which has been attributed to remineralized carbon from deep water upwelled in the ACC, is also due to the wind&#8208;driven transport of DIC from the SIZ. These results stem from the first observation&#8208;based carbon budget of the circumpolar Southern Ocean and thus provide a useful benchmark to evaluate climate models, which have significant biases in this region. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication <style type="text/css"></style><span style="font-family:Arial;font-size:10pt;font-style:normal;" data-sheets-root="1">Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.</span> None eng geoscientificInformation