ANALYSIS ON BACKGROUND OF CLIMATIC VARIATION FOR EXTREMELY RAINY OVER THE MIDDLE REACHES OF THE CHANGJIANG RIVER IN THE 1990S

Xiong Anyuan

Vol.12, NO.1, 2001

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 2001 > 12(1): 113-117

Xiong Anyuan. Analysis on background of climatic variation for extremely rainy over the middle reaches of the Changjiang River in the 1990s. J Appl Meteor Sci, 2001, 12(1): 113-117.

Citation:

Xiong Anyuan. Analysis on background of climatic variation for extremely rainy over the middle reaches of the Changjiang River in the 1990s. J Appl Meteor Sci, 2001, 12(1): 113-117.

Xiong Anyuan. Analysis on background of climatic variation for extremely rainy over the middle reaches of the Changjiang River in the 1990s. J Appl Meteor Sci, 2001, 12(1): 113-117.

Citation:

Xiong Anyuan. Analysis on background of climatic variation for extremely rainy over the middle reaches of the Changjiang River in the 1990s. J Appl Meteor Sci, 2001, 12(1): 113-117.

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ANALYSIS ON BACKGROUND OF CLIMATIC VARIATION FOR EXTREMELY RAINY OVER THE MIDDLE REACHES OF THE CHANGJIANG RIVER IN THE 1990S

Xiong Anyuan

Wuhan Central Meteorological Observatory, Wuhan 430074

Received Date: 1999-06-01
Rev Recd Date: 1999-11-08
Publish Date: 2001-02-28

Abstract

Abstract

The major characteristics of precipitation over the middle reaches of Changjiang River during summer in the 1990s are analyzed. Using wavelet transform technology, the multiple time scale variations including inter-annual, inter-decade and long-term trends for summer rainfall in main regions over the middle reaches of Changjiang River and its related physical factors such as sea surface temperature in the eastern equator, the western Pacific Subtropic High, and summer monsoon of the South China Sea are analyzed. The results reveal that the extreme summer raininess in 1990s over the middle reaches of Changjiang River has favorable background of climatic variation.
- Middle reaches of Changjiang River;
- Extreme raininess;
- Multiple time scales;

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References(6)

Figures and Tables

图 1 长江中游6~7月降水距平百分率的逐年变化

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图 2 长江中游6~7月降水距平的年际 (a)、年代际 (b) 和长期趋势 (c) 变化

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图 3 Niño 3区1月海温指数的年际 (a), 年代际 (b) 和长期趋势变化 (c)

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图 4 西太平洋副高6~7月面积指数的年际 (a), 年代际 (b) 和长期趋势变化 (c)

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图 5 南海夏季风6~7月平均强度指数的年际 (a), 年代际 (b) 和长期趋势变化 (c)

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表 1 长江中游6~7月降水与6~7月WPSHI、SCSMI和前期1月EPSSTI间的相关系数

References

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