AN APPROACH TO A PROGNOSTIC FACTOR OF BASIN RAINFALL IN SUMMER OVER THE SONGHUAJIANG-NENJIANG-LIAOHE VALLEYS

Chen Lijuan; Zhang Peiqun; Zhao Zhenguo

Vol.16, NO.5, 2005

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 2005 > 16(5): 663-669

Chen Lijuan, Zhang Peiqun, Zhao Zhenguo. An approach to a prognostic factor of basin rainfall in summer over the Songhuajiang-Nenjiang-Liaohe valleys. J Appl Meteor Sci, 2005, 16(5): 663-669.

Citation:

Chen Lijuan, Zhang Peiqun, Zhao Zhenguo. An approach to a prognostic factor of basin rainfall in summer over the Songhuajiang-Nenjiang-Liaohe valleys. J Appl Meteor Sci, 2005, 16(5): 663-669.

Chen Lijuan, Zhang Peiqun, Zhao Zhenguo. An approach to a prognostic factor of basin rainfall in summer over the Songhuajiang-Nenjiang-Liaohe valleys. J Appl Meteor Sci, 2005, 16(5): 663-669.

Citation:

Chen Lijuan, Zhang Peiqun, Zhao Zhenguo. An approach to a prognostic factor of basin rainfall in summer over the Songhuajiang-Nenjiang-Liaohe valleys. J Appl Meteor Sci, 2005, 16(5): 663-669.

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AN APPROACH TO A PROGNOSTIC FACTOR OF BASIN RAINFALL IN SUMMER OVER THE SONGHUAJIANG-NENJIANG-LIAOHE VALLEYS

1.
Institute of Atmospheric Physics, CAS, Beijing100029
2.
Laboratory for Climate S tudies, National Climate Center, CMA, Beijing100081
3.
Graduate University of Chinese Academy of Sciences, Beijing100039

Received Date: 2003-02-19
Rev Recd Date: 2005-05-24
Publish Date: 2005-10-31

Abstract

Abstract

By use of 45-station rainfall from the Song hua jiang, Nenjiang and Liaohe (SN L)river v alleys and NCEP/NCAR reanalysis, study is made of the climate features of the summer basin rainfall over the valley s and the forerunner relative to the anomaly, proposing a qualitative prediction scheme for a flood or drought trend based on the Northern Hemisphere circulation anomaly in the previous November and December.The scheme introduces two indices for the anomaly of extratropical circulations, with which to satisfactorily discern and predict the singularities of the basin precipitation in summer.
- So nghuajiang-nenjiang-liaohe river valleys;
- Basin rainfall;
- Anomaly of circulation;
- Prediction

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References(7)

Figures and Tables

图 1 第一特征向量所对应的时间系数和SNLR 45站夏季平均降水量的变化

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图 2 松嫩辽夏季面雨量异常偏多(少)年前期北半球11～12月的平均500 hPa高度场异常合成图(单位:dagpm)

(a)典型偏多年, (b)典型偏少年

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图 3 松嫩辽夏季面雨量异常偏多(少)年同期500 hPa风场异常合成(单位:m·s^-1)

(a)典型偏多年, (b)典型偏少年

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图 4 松嫩辽夏季面雨量与前期北半球11～12月的平均500 hPa高度场的距平相关

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图 5 预测指数散布图

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References

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