PRECIPITATION IN THE YANGTZE RIVER DELTA FIELDS CAUSED BY TROPICAL CYCLONES LANDING IN THE SOUTH CHINA SEA

Chen Shuqin; Huang Hui; Shao Chunhai

Vol.15, NO.6, 2004

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 2004 > 15(6): 688-695

Chen Shuqin, Huang Hui, Shao Chunhai. Precipitation in the Yangtze River Delta fields caused by tropical cyclones landing in the South China Sea. J Appl Meteor Sci, 2004, 15(6): 688-695.

Citation:

Chen Shuqin, Huang Hui, Shao Chunhai. Precipitation in the Yangtze River Delta fields caused by tropical cyclones landing in the South China Sea. J Appl Meteor Sci, 2004, 15(6): 688-695.

Chen Shuqin, Huang Hui, Shao Chunhai. Precipitation in the Yangtze River Delta fields caused by tropical cyclones landing in the South China Sea. J Appl Meteor Sci, 2004, 15(6): 688-695.

Citation:

Chen Shuqin, Huang Hui, Shao Chunhai. Precipitation in the Yangtze River Delta fields caused by tropical cyclones landing in the South China Sea. J Appl Meteor Sci, 2004, 15(6): 688-695.

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PRECIPITATION IN THE YANGTZE RIVER DELTA FIELDS CAUSED BY TROPICAL CYCLONES LANDING IN THE SOUTH CHINA SEA

1.
Zhoushan Meteorological Bureau, Zhoushan 316004
2.
Department of Atmospheric Sciences, Nanjing University, Nanjing 210093
3.
Daishan Meteorological Bureau, Daishan 316200

Received Date: 2003-08-08
Rev Recd Date: 2003-11-10
Publish Date: 2004-12-31

Abstract

Abstract

The maximum precipitation in the Yangtze River Delta which were caused by the tropical cyclones landing in the South China Sea in 1949—2000 were studied. The probability of precipitations above 50 mm was worked out when there was a tropical cyclone in the South China Sea. It is about 60 percents. A wavelet transform about the frequency of the tropical cyclones was performed. The results show that this series has notable oscillations and the periods vary in some regulations. As results of a cross power spectral analysis about the frequency series of the tropical cyclones and the sum series of the subtropical high area indexes of July, August and September, the two series have quasi-two-year and quasi-five-year coupled oscillations. The anomalies in the West Pacific, the Atlantic and the North Pole were found out when the Northern Hemisphere 500 hPa height data of anomalistic years were analyzed.
- Tropical cyclones in the South China Sea;
- The Yangtze River Delta;
- Frequency;
- Cross power spectral analysis

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References(15)

Figures and Tables

图 1 引起长三角地区50 mm以上雨量的南海热带气旋频数序列的小波分析

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图 2 南海热带气旋频数 (虚线) 与夏季副高面积指数 (实线) 分布

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图 3 长三角地区过程雨量在200 mm以上的500 hPa天气形势

(a) 热带气旋低压型，(b) 副高与气旋结合型，(c) 冷空气型

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图 4 异常年9月份的500 hPa高度距平 (a) 和t统计量 (b)

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表 1 1949~2000年长三角地区降水与南海热带气旋的统计情况

表 2 历年引起长三角地区过程雨量大于50 mm的南海热带气旋的频数

表 3 南海热带气旋频数与副高面积指数交叉谱分析结果

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