THE MULTI-TIME SCALE VARIATIONS OF SUMMER MONSOON OVER SOUTH CHINA SEA AND ITS INTERACTION WITH SST ANOMALY

Liang Jianyin; Wu Shangsen

Vol.11, NO.1, 2000

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 2000 > 11(1): 95-104

Liang Jianyin, Wu Shangsen. The multi-time scale variations of summer monsoon over South China Sea and its interaction with SST anomaly. J Appl Meteor Sci, 2000, 11(1): 95-104.

Citation:

Liang Jianyin, Wu Shangsen. The multi-time scale variations of summer monsoon over South China Sea and its interaction with SST anomaly. J Appl Meteor Sci, 2000, 11(1): 95-104.

Liang Jianyin, Wu Shangsen. The multi-time scale variations of summer monsoon over South China Sea and its interaction with SST anomaly. J Appl Meteor Sci, 2000, 11(1): 95-104.

Citation:

Liang Jianyin, Wu Shangsen. The multi-time scale variations of summer monsoon over South China Sea and its interaction with SST anomaly. J Appl Meteor Sci, 2000, 11(1): 95-104.

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THE MULTI-TIME SCALE VARIATIONS OF SUMMER MONSOON OVER SOUTH CHINA SEA AND ITS INTERACTION WITH SST ANOMALY

Guangzhou Research Institute of Tropical Marine Meteorology, Guangzhou 510080

Received Date: 1998-10-19
Rev Recd Date: 1995-05-12
Publish Date: 2000-02-29

Abstract

Abstract

Using reanalyzed data of NCEP and observational data of OLR and SST, the features of multi-time scale variations of summer monsoon are studied, and the differences of the atmospheric circulation between strong and weak summer monsoon years are analyzed. It is shown that there exists obvious interplay between the summer monsoon variation over the South China Sea and SST, and meanwhile the variation of SST has a certain effect on summer monsoon.
- Summer monsoon;
- Air-sea interaction;
- Atmospheric circulation;
- South China Sea

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References(17)

Figures and Tables

图 1 南海西南季风指数距平序列不同时间尺度的MHAT小波序列

(实线: a=9候, 虚线: a=36候, 点线: a=144候)

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图 2 强季风年与弱季风年5～9月850 hPa风场和位势高度场差异分布图

(等值线为位势高度差分布, 间隔为10 gpm, 阴影区为风场差异显著区, t检验信度超过0.05)

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图 3 强季风年与弱季风年5～9月200 hPa风场和位势高度场差异分布图

(说明同图 2)

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图 4 强季风年与弱季风年夏季 (5～9月) 500 hPa北半球位势高度场差异分布图

(等值线间隔为10 gpm)

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图 5 强弱季风年5～9月100°～120°E平均经向垂直环流差异 (a) 和纬向风差异 (b) 剖面图

((a) 等值线为垂直速度, 单位为10^-3 hPa/s; 矢量为经向风速和垂直风速. (b) 等值线为纬向风, 单位为m/s)

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图 6 强季风年与弱季风年我国5～9月降水量差异分布图

(等值线间隔为100 mm)

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图 7 强弱季风年5～9月平均海温差异分布图

(等值线间隔: 0.5 ℃)

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图 8 不同海域海温距平序列不同时间尺度MHAT小波分析结果

(a) a=144候, (b) a=36候, (c) a=9候 (图a, 图b中实线为赤道东太平洋海温, 细点线为西太平洋海温, 点断线为阿拉伯海海温, 长断线为南海海温, 粗实线为南海西南季风指数, 图c中实线为阿拉伯海温, 断线为南海海温, 点线为南海西南季风指数)

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