INFLUENCES OF WINTER-STRENGTHEN PATTERN AND WINTER-WEAKEN PATTERN OF EL NIÑO AND LA NIÑA ON DROUGHT/FLOOD IN SUMMER OVER CHINA

Chen Guiying

Vol.11, NO.2, 2000

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 2000 > 11(2): 154-164

Chen Guiying. Influences of winter-strengthen pattern and winter-weaken pattern of El Niño and La Niña on drought/flood in summer over China. J Appl Meteor Sci, 2000, 11(2): 154-164.

Citation:

Chen Guiying. Influences of winter-strengthen pattern and winter-weaken pattern of El Niño and La Niña on drought/flood in summer over China. J Appl Meteor Sci, 2000, 11(2): 154-164.

Chen Guiying. Influences of winter-strengthen pattern and winter-weaken pattern of El Niño and La Niña on drought/flood in summer over China. J Appl Meteor Sci, 2000, 11(2): 154-164.

Citation:

Chen Guiying. Influences of winter-strengthen pattern and winter-weaken pattern of El Niño and La Niña on drought/flood in summer over China. J Appl Meteor Sci, 2000, 11(2): 154-164.

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INFLUENCES OF WINTER-STRENGTHEN PATTERN AND WINTER-WEAKEN PATTERN OF EL NIÑO AND LA NIÑA ON DROUGHT/FLOOD IN SUMMER OVER CHINA

Chen Guiying

National Climate Center, Beijing 100081

Received Date: 1999-02-01
Rev Recd Date: 1999-04-16
Publish Date: 2000-05-31

Abstract

Abstract

According to the inter-monthly SSTA variation during winter in equatorial East Pacific after the occurrings of El Niño and La Niña onset, the winter-strengthen pattern and winter-weaken pattern of El Niño and La Niña are defined. The characteristics of the general circulation in winter, spring and summer, East Asian monsoon, summer rainfall and the distribution of drought/flood in China are discussed. It is shown that the four kinds of patterns for summer rainfall and drought/flood in China could be associated with different phases of ENSO cycle during winter, and with different responses of the general circulation and East Asian monsoon to that. Finally, a physics concept pattern is proposed about the rainfall distribution patterns in summer over China which are associated with different patterns of El Niño and La Niña in winter as well as the general circulation and the East Asian monsoon.
- Winter-strengthen pattern;
- Winter-weaken pattern;
- General circulation;
- East Asian monsoon;
- Droughf/flood distriloution

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References(8)

Figures and Tables

图 1 El Niño和La Niña冬季增强型 (a)、减弱型 (b) (冬季: 12月至翌年2月) Niño-3区标准化海温距平指数 (空白柱) 及其月际差 (黑柱)

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图 2 El Niño和La Niña冬季增强型和减弱型同期 (12月至翌年2月) 500 hPa高度平均标准化距平分布 (a) El Niño加强型 (b) El Niño减弱型 (c) La Niña加强型 (d) La Niña减弱型

(图中正、负标准化距平分别用实线和虚线表示)

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图 3 El Niño和La Niña冬季增强型和减弱型夏季 (6～8月) 500 hPa高度平均标准化距平分布图 (a) El Niño加强型 (b) El Niño减弱型 (c) La Niña加强型 (d) La Niña减弱型

(其它说明同图 2)

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图 4 西太平洋副热带高压脊线指数 (a)和欧亚西风指数 (b) 逐候累积曲线

(图中E₊、E_-、L₊、L_-分别表示El Niño冬季增强型和减弱型、La Niña冬季增强型和减弱型)

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图 5 El Niño和La Niña冬季增强型和减弱型的夏季 (6～8月)平均降水距平百分率分布 (a) El Niño加强型 (b) El Niño减弱型 (c) La Niña加强型 (d) La Niña减弱型

(图中正、负降水距平百分率分别用实线和虚线表示)

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图 6 汛期物理统计概念模型

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表 1 El Niño和 La Niña加强型和减弱型历年东亚季风指数 (距平)

表 2 El Niño和La Niña不同型我国夏季降水旱涝分布型和登陆台风

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