本世紀近六十年我国大范围降水異常年的初步分析

A PRELIMINARY ANALYSIS OF ABNORMAL PRECIPITATION DISTRIBUTION IN EASTERN CHINA IN THE FIRST SIX DECADES OF THE PRESENT CENTURY

中文摘要:

      本文利用1901—1960年全国86个站的降水量資料制作了逐月降水量等級图,据此对我国大范围降水异常年份的分布出現的規律及其与太阳黑子沃尔夫(Wolf)指数之間的关联作了初步的分析.結果表明:我国大范围降水的特征目前仍处在負异常占优势的周期中.近年来大范围降水异常总頻次急剧增加的气候反常現象,可能与最近一个周期太阳活动的强烈发展有关.

英文摘要:

      Using the precipitation data of 60 years (1901-1960) at eighty-six stations of the pastern part of China, a number of monthly precipitation charts are constructed. The frequency, intensities and regularity on the occurrence of abnormal precipitation distribulion are analyzed. It is shown that during recent years the negative precipitation anomaly is predominant over eastern China. The frequency of abnormal years in precipitation distribution is found to correlate significantlv with the solar activities.