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| Russell, Joellen L.; Kamenkovich, Igor; Bitz, Cecilia; Ferrari, Raffaele; Gille, Sarah T.; Goodman, Paul J.; Hallberg, Robert; Johnson, Kenneth; Khazmutdinova, Karina; Marinov, Irina; Mazloff, Matthew; Riser, Stephen; Sarmiento, Jorge L.; Speer, Kevin; Talley, Lynne D.; Wanninkhof, Rik. |
| The Southern Ocean is central to the global climate and the global carbon cycle, and to the climate's response to increasing levels of atmospheric greenhouse gases, as it ventilates a large fraction of the global ocean volume. Global coupled climate models and earth system models, however, vary widely in their simulations of the Southern Ocean and its role in, and response to, the ongoing anthropogenic trend. Due to the region's complex water-mass structure and dynamics, Southern Ocean carbon and heat uptake depend on a combination of winds, eddies, mixing, buoyancy fluxes, and topography. Observationally based metrics are critical for discerning processes and mechanisms, and for validating and comparing climate and earth system models. New observations... |
| Tipo: Text |
Palavras-chave: Southern Ocean; Heat uptake; Carbon uptake; Observationally based metrics. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00673/78491/80788.pdf |
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| Gray, Alison R.; Johnson, Kenneth S.; Bushinsky, Seth M.; Riser, Stephen C.; Russell, Joellen L.; Talley, Lynne D.; Wanninkhof, Rik; Williams, Nancy L.; Sarmiento, Jorge L.. |
| Although the Southern Ocean is thought to account for a significant portion of the contemporary oceanic uptake of carbon dioxide (CO2), flux estimates in this region are based on sparse observations that are strongly biased toward summer. Here we present new estimates of Southern Ocean air-sea CO2 fluxes calculated with measurements from biogeochemical profiling floats deployed by the Southern Ocean Carbon and Climate Observations and Modeling project during 2014-2017. Compared to ship-based CO2 flux estimates, the float-based fluxes find significantly stronger outgassing in the zone around Antarctica where carbon-rich deep waters upwell to the surface ocean. Although interannual variability contributes, this difference principally stems from the lack of... |
| Tipo: Text |
Palavras-chave: Air-sea carbon flux; SOCCOM. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00673/78485/80837.pdf |
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