An Index Measuring the Interannual Variation of the East Asian Summer Monsoon--The EAP Index

HUANG Gang

doi:10.1007/BF02915679

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Volume 21 Issue 1

Jan. 2004

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Article > ADVANCES IN ATMOSPHERIC SCIENCES > 2004 > 21(1): 41-52

An Index Measuring the Interannual Variation of the East Asian Summer Monsoon--The EAP Index

HUANG Gang

1.
RCE-TEA and LASG,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029

HUANG Gang

doi: 10.1007/BF02915679

Abstract
References
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Abstract:
Based on the EAP (East Asia/Pacific) teleconnection in the summer circulation anomalies over the Northern Hemisphere,an index measuring the strength of the East Asian summer monsoon,i.e.,the socalled EAP index,is defined in this paper.From the analyses of observed data,it is clearly shown that the EAP index defined in this study can well describe the interannual variability of summer rainfall and surfaceair temperature in East Asia,especially in the Yangtze River valley and the Hualhe River valley,Korea,and Japan.Moreover,this index can also reflect the interannual variability of the East Asian summer monsoon system including the monsoon horizontal circulation and the vertical-merldional circulation cell over East Asia.From the composite analyses of climate and monsoon circulation anomalies for high EAP index and for low EAP index,respectively,it is well demonstrated that the EAP index proposed in this study can well measure the strength of the East Asian summer monsoon.
- East Asia/Pacific index1 East Asian summer mozmoon,interannual variability
References

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Manuscript History

Manuscript received: 10 January 2004

Manuscript revised: 10 January 2004

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

An Index Measuring the Interannual Variation of the East Asian Summer Monsoon--The EAP Index

HUANG Gang

1. RCE-TEA and LASG,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029

Manuscript received: 2004-01-10
Manuscript revised: 2004-01-10

Abstract: Based on the EAP (East Asia/Pacific) teleconnection in the summer circulation anomalies over the Northern Hemisphere,an index measuring the strength of the East Asian summer monsoon,i.e.,the socalled EAP index,is defined in this paper.From the analyses of observed data,it is clearly shown that the EAP index defined in this study can well describe the interannual variability of summer rainfall and surfaceair temperature in East Asia,especially in the Yangtze River valley and the Hualhe River valley,Korea,and Japan.Moreover,this index can also reflect the interannual variability of the East Asian summer monsoon system including the monsoon horizontal circulation and the vertical-merldional circulation cell over East Asia.From the composite analyses of climate and monsoon circulation anomalies for high EAP index and for low EAP index,respectively,it is well demonstrated that the EAP index proposed in this study can well measure the strength of the East Asian summer monsoon.

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