Response of sea surface fugacity of CO2 to the SAM shift south of Tasmania: Regional differences
| Type | Article | ||||||||||||
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| Date | 2015-05-28 | ||||||||||||
| Language | English | ||||||||||||
| Author(s) | Xue Liang1, Gao Libao1, Cai Wei-Jun2, Yu Weidong1, Wei Meng3 | ||||||||||||
| Affiliation(s) | 1 : State Ocean Adm, Inst Oceanog 1, Ctr Ocean & Climate Res, Qingdao, Peoples R China. 2 : Univ Delaware, Sch Marine Sci & Policy, Newark, DE USA. 3 : State Ocean Adm, Inst Oceanog 1, Key Lab Marine Sci & Numer Modeling, Qingdao, Peoples R China. |
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| Source | Geophysical Research Letters (0094-8276) (Amer Geophysical Union), 2015-05-28 , Vol. 42 , N. 10 , P. 3973-3979 | ||||||||||||
| DOI | 10.1002/2015GL063926 | ||||||||||||
| WOS© Times Cited | 15 | ||||||||||||
| Keyword(s) | Southern Ocean, Southern Annular Mode shift, carbon cycling, upwelling, south of Tasmania | ||||||||||||
| Abstract | Using observational data collected south of Tasmania during 14 austral summer cruises during 1993-2011, we examined the response of sea surface fugacity of carbon dioxide (fCO(2)) to the Southern Annular Mode (SAM) shift, which occurred around 2000. In the southern part of the Southern Ocean (SO) or the Polar Zone (PZ) and the Polar Frontal Zone (PFZ), fCO(2) increased faster at the sea surface than in the atmosphere before the SAM shift, but not after the shift. In the northern part of the SO or the Subantarctic Zone (SAZ), however, surface fCO(2) increased faster than atmospheric fCO(2) both before and after the shift. The SAM shift had an important influence on the surface fCO(2) trend in the PZ and PFZ but not in the SAZ, which we attribute to differences in regional oceanographic processes (upwelling versus nonupwelling). The SAM shift may have reversed the negative trend of SO CO2 uptake. | ||||||||||||
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