The synergistic effect of SSTA between the equatorial eastern Pacific and the Indian-South China Sea warm pool region influence on the western Pacific subtropical high

Chen Di; Gao Shanhong; Chen Jinnian; Gao Shan

doi:10.3969/j.issn.0253-4193.2016.02.001

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Chen Di, Gao Shanhong, Chen Jinnian, Gao Shan. The synergistic effect of SSTA between the equatorial eastern Pacific and the Indian-South China Sea warm pool region influence on the western Pacific subtropical high[J]. Haiyang Xuebao, 2016, 38(2): 1-15. doi: 10.3969/j.issn.0253-4193.2016.02.001

Citation:

Chen Di, Gao Shanhong, Chen Jinnian, Gao Shan. The synergistic effect of SSTA between the equatorial eastern Pacific and the Indian-South China Sea warm pool region influence on the western Pacific subtropical high[J]. Haiyang Xuebao, 2016, 38(2): 1-15. doi: 10.3969/j.issn.0253-4193.2016.02.001

Citation:

Chen Di, Gao Shanhong, Chen Jinnian, Gao Shan. The synergistic effect of SSTA between the equatorial eastern Pacific and the Indian-South China Sea warm pool region influence on the western Pacific subtropical high[J]. Haiyang Xuebao, 2016, 38(2): 1-15. doi: 10.3969/j.issn.0253-4193.2016.02.001

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The synergistic effect of SSTA between the equatorial eastern Pacific and the Indian-South China Sea warm pool region influence on the western Pacific subtropical high

doi: 10.3969/j.issn.0253-4193.2016.02.001

1.
College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao 266100, China
2.
Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Key Laboratory of Ocean Circulation and Waves, Chinese Academy of Sciences, Qingdao 266071, China

Received Date: 2015-10-24
Rev Recd Date: 2015-11-05

Abstract

Abstract

In this paper, Hadley Center provided the latest global sea surface temperature data.It is analyzed that relationship between the equatorial Pacific and Indian-South China Sea (Indian-South) warm pool region sea surface temperature anomalies (SSTA) and the western Pacific subtropical high (WPSH). Results show that the effect SSTA in the equatorial eastern Pacific and India-South warm pool region SSTA on WPSH is obvious to the difference in temporal and spatial distribution, the both of them are playing an important synergistic effect in WPSH changes process. The former influence on WPSH that begin spring last year until the spring of this year. The latter that begin in early winter until summer of this year. The way that SSTA in the equatorial eastern Pacific influence on WPSH mainly through the impact on the meridional circulation, however the way that SSTA in the Indian-South warm pool mainly impact of WPSH is through the meridional circulation and water vapor transportation. The former is mainly that SSTA in the equatorial eastern Pacific influence to Hadley circulation at the middle and lower layer in the troposphere, while the latter is mainly influence to monsoon circulation and associated water vapor transportation at lower layer in the troposphere. The mechanism of these two effects on WPSH is different. The author first time puts forward the process that SSTA between the equatorial eastern Pacific and India-South warm pool region influence on the WPSH which has synergistic effect. Through the optimal subset regression analysis, the anomalous variation of WPSH forecast model is established, and the prognosticated result is that the intensity of WPSH are stronger than the normal in May, June, July and August 2015, the actual result are stronger than the normal of the intensity of the WPSH, therefore, we think that the forecast model is dependable. This work is to emphasize the characteristics of the equatorial eastern Pacific and India-South warm pool synergy effect on persistence variation in WPSH, it is provided more reliable basis for the prediction of WPSH abnormal change and its precipitation.
- WPSH,
- the equatorial eastern Pacific,
- Indian-South China Sea warm pool,
- SSTA,
- optimal subset regression,
- forecast

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References(34)

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