A discuss on interannual to decadal variations of latent heat exchange over the South China Sea

SUI Dandan; XIE Qiang; WANG Dongxiao

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SUI Dandan, XIE Qiang, WANG Dongxiao. A discuss on interannual to decadal variations of latent heat exchange over the South China Sea[J]. Haiyang Xuebao, 2012, 34(4): 27-34.

Citation:

SUI Dandan, XIE Qiang, WANG Dongxiao. A discuss on interannual to decadal variations of latent heat exchange over the South China Sea[J]. Haiyang Xuebao, 2012, 34(4): 27-34.

SUI Dandan, XIE Qiang, WANG Dongxiao. A discuss on interannual to decadal variations of latent heat exchange over the South China Sea[J]. Haiyang Xuebao, 2012, 34(4): 27-34.

Citation:

SUI Dandan, XIE Qiang, WANG Dongxiao. A discuss on interannual to decadal variations of latent heat exchange over the South China Sea[J]. Haiyang Xuebao, 2012, 34(4): 27-34.

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A discuss on interannual to decadal variations of latent heat exchange over the South China Sea

1.
State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
2.
State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China;Sanya Institute of Deep Sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China

Received Date: 2010-04-11
Rev Recd Date: 2010-07-05

Abstract

Abstract

The study analyzes the interannual and decadal characteristics of South China Sea (SCS) surface latent heat flux according to the Objective Analysis of surface heat flux (OAflux), the SCS throughflow (that is indicated by the Luzon Strait transport, LST) inferred by the"Island Rule" theory and heat content in South China Sea. It reaches its peak in winter, and is the weakest in spring; In autumn and winter, latent heat flux is much larger in the North than that in the South, while it is larger in the South during summer. It shows that the SCS latent heat flux has been increasing since the beginning of 1980s. In the EOF analysis Mann-Kendall and trend methods of multi-time scales variation of the SCSlatent heat flux, the first three variances contribute: 53.01%(the major long-term trend), 17.4%(interdecadal change) and 6.71%(interannual change), respectively. It can be concluded that in the interannual scales, if LST gets weaker after flowing into the SCS, it will result in warmer sea surface temperature (SST) and smaller temperature difference between air and sea, which leads to a decrease in the latent heat flux, that is, a negative latent heat flux anomaly; On the contrary, if LST gets stronger, then the temperature difference between air and sea increases, causing a positive latetn heat flux anomaly.
- The South China Sea (SCS),
- latent heat flux,
- Luzon Strait Transport,
- heat content,
- annual,
- decadal

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References

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