期刊
ACTA OCEANOLOGICA SINICA
卷 32, 期 9, 页码 21-29出版社
SPRINGER
DOI: 10.1007/s13131-013-0348-7
关键词
sea surface temperature; China seas; ENSO; anticyclone
类别
资金
- National Natural Science Foundation of China [41106023]
- State Oceanic Administration Marine Science Foundation for Youth of China [2012204]
- Key Laboratory of Ocean Circulation and Wave, Institute of Oceanology, Chinese Academy of Sciences [KLOCAW1102]
Positive SST anomalies usually appear in remote ocean such as the China seas during an ENSO event. By analyzing the monthly data of HadISST from 1950 to 2007, it shows that the interannual component of SST anomalies peak approximately 10 months after SST anomalies peak in the eastern equatorial Pacific. As the ENSO event progresses, the positive SST anomalies spread throughout the China seas and eastward along the Kuroshio extension. Atmospheric reanalysis data demonstrate that changes in the net surface heat flux entering into the China seas are responsible for the SST variability. During El Nio, the western north Pacific anticyclone is generated, with anomalous southwester lies prevailing along the East Asian coast. This anticyclone reduces the mean surface wind speed which decreases the surface heat flux and then increases the SST. The delays between the developing of this anticyclone and the south Indian Ocean anticyclone with approximately 3-6 months cause the 2-3 months lag of the surface heat flux between the China seas and the Indian Ocean. The northwestern Pacific anticyclone is the key process bridging the warming in the eastern equatorial Pacific and that in the China seas.
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