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      氣候變化研究進(jìn)展 ?? 2007, Vol. 03 ?? Issue (05): 271-275.

      ? 研究短論 ? 上一篇    下一篇

      華北和印度夏季風(fēng)降水變化的對(duì)比分析

      郝立生 閔錦忠 姚學(xué)祥   

      1. (河北)衡水市氣象局
      • 收稿日期:2007-02-28 修回日期:2007-04-27 出版日期:2007-09-30 發(fā)布日期:2007-09-30
      • 通訊作者: 郝立生

      Comparison of Summer Monsoon Rainfall Changes Between North China and India

      Lisheng HAO   

      • Received:2007-02-28 Revised:2007-04-27 Online:2007-09-30 Published:2007-09-30
      • Contact: Lisheng HAO

      摘要: 利用華北和印度夏季降水資料,采用趨勢(shì)分析、小波變換等方法,對(duì)兩地區(qū)夏季風(fēng)降水進(jìn)行了對(duì)比分析。結(jié)果表明:1) 華北和印度夏季風(fēng)降水量都存在線性減少傾向,但華北更為顯著,減少達(dá)16 mm/10 a;2) 華北和印度夏季風(fēng)降水變化都以18 a周期為主,近年都有逐漸縮短的趨勢(shì),而印度的這種周期縮短得比華北更快,近年降水變化周期接近15 a;3) 華北和印度夏季風(fēng)降水變化在1956、1976、1992/1993年發(fā)生了趨勢(shì)轉(zhuǎn)折;4) 華北和印度降水量主要集中在6-9月,夏季風(fēng)降水特征非常明顯,但兩地變化特征表現(xiàn)不盡相同。

      關(guān)鍵詞: 華北, 印度, 降水, 夏季風(fēng)

      Abstract: Based on summer precipitation data, by using trend analysis, wavelet transform methods, the changes of summer rainfall in North China and in India were analyzed. The results show that the summer monsoon rainfall has obviously linear decreasing tendency both in North China and in India, it is more obvious in North China than in India, with an average decreasing trend of 16 mm/10a in North China during the past 56 years and 2 mm/10a in India, respectively. The change of rainfall has a dominant 18-year period both in North China and in India. Turning of rainfall change occurred in 1956, 1976 and 1992/1993. The precipitation mostly occurred from June to September in two regions, but their changes were not the same. In North China, the rainfall appeared a rapid enhancement in July, and an abrupt decrease in September. However, in India, the rainfall appeared a rapid enhancement in June and an abrupt decrease in October.

      Key words: North China, India, rainfall, summer monsoon, change trend

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