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Subtropical High Anomalies over the Western Pacific and Its Relations to the Asian Monsoon and SST Anomaly


doi: 10.1007/s00376-999-0031-2

  • Using the data of 500 hPa geopotential height from 1951 to 1995, SST roughly in the same period and OLR data from 1974 to 1994, the relation between the anomalies of subtropical high (STH for short) and the tropical circulations including the Asian monsoon as well as the convective activity are studied。 In older to study the physical process of the air-sea interaction related to STH anomaly, the correlation of STH with SST at various sea areas, lagged and simultaneous, has been calculated. Comparing the difference of OLR, wind fields, vertical circulations and SST anomalies in the strong and weak STH, we investigate the characteristics of global circulations and the SST distributions related to the anomalous STH at the western Pacific both in winter and summer. Much attention has been paid to the study of the air-sea interaction and the relationship between the East Asian monsoon and the STH in the western Pacific. A special vertical circulation, related to the STH anomalies is found, which connects the monsoon current to the west and the vertical flow influenced by the SST anomaly in the tropical eastern Pacific.
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    [7] Chaofan LI, Riyu LU, Nick DUNSTONE, Adam A. SCAIFE, Philip E. BETT, Fei ZHENG, 2021: The Seasonal Prediction of the Exceptional Yangtze River Rainfall in Summer 2020, ADVANCES IN ATMOSPHERIC SCIENCES, 38, 2055-2066.  doi: 10.1007/s00376-021-1092-0
    [8] Huang Ronghui, Lu Li, 1989: Numerical Simulation of the Relationship between the Anomaly of Subtropical High over East Asia and the Convective Activities in the Western Tropical Pacific, ADVANCES IN ATMOSPHERIC SCIENCES, 6, 202-214.  doi: 10.1007/BF02658016
    [9] He Jinhai, Zhou Bing, Wen Min, Li Feng, 2001: Vertical Circulation Structure, lnterannual Variation Features and Variation Mechanism of Western Pacific Subtropical High, ADVANCES IN ATMOSPHERIC SCIENCES, 18, 497-510.  doi: 10.1007/s00376-001-0040-2
    [10] ZHAI Fangguo, WANG Qingye, WANG Fujun, Hu Dunxin, 2014: Variation of the North Equatorial Current, Mindanao Current, and Kuroshio Current in a High-Resolution Data Assimilation during 20082012, ADVANCES IN ATMOSPHERIC SCIENCES, 31, 1445-1459.  doi: 10.1007/s00376-014-3241-1
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    [17] YANG Hui, SUN Shuqing, 2003: Longitudinal Displacement of the Subtropical High in the Western Pacific in Summer and its Influence, ADVANCES IN ATMOSPHERIC SCIENCES, 20, 921-933.  doi: 10.1007/BF02915515
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Manuscript History

Manuscript received: 10 October 1999
Manuscript revised: 10 October 1999
通讯作者: 陈斌, bchen63@163.com
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Subtropical High Anomalies over the Western Pacific and Its Relations to the Asian Monsoon and SST Anomaly

  • 1. Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029

Abstract: Using the data of 500 hPa geopotential height from 1951 to 1995, SST roughly in the same period and OLR data from 1974 to 1994, the relation between the anomalies of subtropical high (STH for short) and the tropical circulations including the Asian monsoon as well as the convective activity are studied。 In older to study the physical process of the air-sea interaction related to STH anomaly, the correlation of STH with SST at various sea areas, lagged and simultaneous, has been calculated. Comparing the difference of OLR, wind fields, vertical circulations and SST anomalies in the strong and weak STH, we investigate the characteristics of global circulations and the SST distributions related to the anomalous STH at the western Pacific both in winter and summer. Much attention has been paid to the study of the air-sea interaction and the relationship between the East Asian monsoon and the STH in the western Pacific. A special vertical circulation, related to the STH anomalies is found, which connects the monsoon current to the west and the vertical flow influenced by the SST anomaly in the tropical eastern Pacific.

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