福建雨季降水异常的特征分析

作者：许金镜1  温珍治1  肖再勉1  杨林1  王毅仁2

单位：1. 福建省气象台, 福州; 2. 南安市气象局, 南安

关键词：雨季降水异常 演变规律 环流背景 海温环境

分类号：P458

出版年·卷·期（页码）：2002·2002·第四期（52-59）

摘要：

本文取全省25个代表站1960～1999年5～6月的降水资料和北半球500hPa、北太平洋海温的月平均资料为素材,首先标定降水的异常指数和异常年例,其次应用小波分析、自相关、功率谱和周期分析等方法褐示降水的演变规律,最后分析异常降水的500hPa环流背景和海温特征,所得结果可为我省的短期气候预测提供线索。

The precipitation data during May-June at 25 representative meteorologicalstations in Fujian Province, 500 hPa height data in northern hemisphere and monthly mean sea temperature in North Pacific from 1960 to 1999 were selected. First, the anomalous index and anomalous years of precipitation were defined. Next, statistical methods of wavelet analysis, autocorrelation analysis, power-spectrum analysis, periodic analysis were used to reveal variable regularity of precipitation. Finally, the features of 500 hPa circulation and sea temperature of anomalous pricipitation were analyzed. The results may provide help for the short-term climate variation prediction of precipitation in Fujian Province during rainy season.

参考文献：

[1] 鹿世瑾.福建气候.气象出版社,1999,368. [2] 国家气候中心.月气候监测公报.1996. [3] 魏风英.现代气候统计诊断预测技术.北京:气象出版社,1999,106～113.

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