A STUDY OF RELATIONSHIPS BETWEEN SPRING WINTER AND SUMMER GENERAL CIRCULATION ANOMALIES

Sun Li; An Gang

Vol.13, NO.6, 2002

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Sun Li, An Gang. A study of relationships between spring winter and summer general circulation anomalies. J Appl Meteor Sci, 2002, 13(6): 650-661.

Citation:

Sun Li, An Gang. A study of relationships between spring winter and summer general circulation anomalies. J Appl Meteor Sci, 2002, 13(6): 650-661.

Sun Li, An Gang. A study of relationships between spring winter and summer general circulation anomalies. J Appl Meteor Sci, 2002, 13(6): 650-661.

Citation:

Sun Li, An Gang. A study of relationships between spring winter and summer general circulation anomalies. J Appl Meteor Sci, 2002, 13(6): 650-661.

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A STUDY OF RELATIONSHIPS BETWEEN SPRING WINTER AND SUMMER GENERAL CIRCULATION ANOMALIES

Sun Li,
An Gang

Institute of Meteorological Science of Jilin Prov ince, Changchun 130062

Received Date: 2001-07-02
Rev Recd Date: 2001-10-20
Publish Date: 2002-12-31

Abstract

Abstract

By using Singular Value Decomposition (SVD) technique and monthly mean 500 hPa height data in the Northern Hemisphere from 1951 to 2000, the inter-seasonal relationships of general circulation anomalies are studied. The results show that the first mode derived from SVD indicates the key coupled characteristics-there exists close temporal and spatial correlation between seasonal 500 hPa height anomalies and its former seasonal 500 hPa height anomalies. Especially there are obvious connections between the general circulation anomalies in summer and those in past winter and spring. The variations of the East Asian trough, North American trough, polar low, North Pacific oscillation and Siberian high of the North Hemisphere 500 hPa in winter and spring play important roles in the general circulation anomalies in the following summer and autumn in East Asian.
- Seasonal general circulation anomaly;
- Inter-seasonal relation;
- Singular value decomposition (SVD)

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References(7)

Figures and Tables

图 1 c 方案第1模态的同性相关分布

(a)夏季500 hPa 高度距平场(b)春季500 hPa 高度距平场(实线为正值,虚线为负值)

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图 2 c 方案第2 模态的同性相关分布

(a)夏季500 hPa 高度距平场(b)春季500 hPa 高度距平场(实线为正值,虚线为负值)

DownLoad: Full-Size Img PowerPoint

图 3 b方案第1 模态的同性相关分布

(a)夏季500 hPa 高度距平场(b)冬季500 hPa 高度距平场(实线为正值,虚线为负值)

DownLoad: Full-Size Img PowerPoint

图 4 b 方案第2 模态的同性相关分布

(a)夏季500 hPa 高度距平场(b)冬季500 hPa 高度距平场(实线为正值,虚线为负值)

DownLoad: Full-Size Img PowerPoint

图 5 c 方案(a)和b 方案(b)第1 耦合模态的时间系数分布

(实线:北半球春季或冬季500 hPa 高度距平场,虚线:东亚地区夏季500 hPa 高度距平场)

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图 6 a 方案第1 模态的同性相关分布

(a)春季500 hPa 高度距平场(b)冬季500 hPa 高度距平场(实线为正值,虚线为负值)

DownLoad: Full-Size Img PowerPoint

图 7 d 方案第1 模态的同性相关分布

>(a)秋季500 hPa 高度距平场(b)春季500 hPa 高度距平场(实线为正值,虚线为负值)

DownLoad: Full-Size Img PowerPoint

表 1 前4 对奇异向量的方差贡献及耦合模态之间的相关系数 (夏季与前冬(b 方案)和夏季与前春(c 方案))

表 2 前4 对奇异向量的方差贡献及耦合模态的相关系数 (春季与前冬(a 方案)以及秋季与前春(d方案)和秋季与前夏(e 方案))

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