期刊
SCIENCE
卷 345, 期 6199, 页码 897-903出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1254937
关键词
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资金
- NSF [AGS-1262231]
- Natural Science Foundation of China [41330960, 41176029]
- Directorate For Geosciences
- Div Atmospheric & Geospace Sciences [1262231] Funding Source: National Science Foundation
- Division Of Mathematical Sciences
- Direct For Mathematical & Physical Scien [0940342] Funding Source: National Science Foundation
A vacillating global heat sink at intermediate ocean depths is associated with different climate regimes of surface warming under anthropogenic forcing: The latter part of the 20th century saw rapid global warming as more heat stayed near the surface. In the 21st century, surface warming slowed as more heat moved into deeper oceans. In situ and reanalyzed data are used to trace the pathways of ocean heat uptake. In addition to the shallow La Nina-like patterns in the Pacific that were the previous focus, we found that the slowdown is mainly caused by heat transported to deeper layers in the Atlantic and the Southern oceans, initiated by a recurrent salinity anomaly in the subpolar North Atlantic. Cooling periods associated with the latter deeper heat-sequestration mechanism historically lasted 20 to 35 years.
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