气候变化研究进展 ›› 2008, Vol. 4 ›› Issue (002): 73-077.

• 研究短论 • 上一篇    下一篇

1961-2004年宁夏极端气温变化趋势分析

陈晓光 Declan Conway 郑广芬 陈晓娟   

  1. 青海省气象局
  • 收稿日期:2007-05-08 修回日期:2007-09-24 出版日期:2008-03-31 发布日期:2008-03-31
  • 通讯作者: 陈晓光

Trends of Extreme Temperature in Ningxia During 1961-2004

  

  • Received:2007-05-08 Revised:2007-09-24 Online:2008-03-31 Published:2008-03-31

摘要: 利用1961-2004年宁夏逐日最高、最低气温资料,分析了宁夏44 a来最高、最低气温的变化趋势。结果表明:宁夏的最高、最低气温表现出了明显的变化趋势,最高气温<0℃的日数减少,>30℃的日数增加;在年平均最低气温升高的同时,极冷日数也在增加,相对于1961-1990年的平均值,20世纪90年代和21世纪最初的4 a年极冷日数分别增加了1.1 d和0.7 d,距平百分率分别达350%和275%。

关键词: 气候变化, 频率, 最高气温, 最低气温

Abstract: The trends in daily frequency of maximum and minimum temperatures over the last 44 years were analyzed using the daily maximum and minimum temperature data from 1961 to 2004 in Ningxia, by classifying the temperatures into 38 levels. It was found that daily frequency of maximum temperature below 0℃ decreased while that over 30℃ increased. The annual average minimum temperature increased, meanwhile the daily frequency of extremely low temperature also increased by 350%-275% in 1991-2004 relative to 1961-1990. Therefore, the extreme trends of temperature are obvious in Ningxia.

Key words: climate change, frequency, maximum temperature, minimum temperature, Ningxia

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