中国农业气象

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沧州地区近40年来气温和降水量的变化趋势分析

龚宇;邢开成;王璞;   

  1. 唐山市气象局,沧州市气象局,中国农业大学农学系 河北唐山063000
  • 出版日期:2008-04-10 发布日期:2008-04-10
  • 基金资助:
    国家十五科技攻关重大项目(2001BA5080B02-06)

Research on Change Trend of Temperature and Precipitation in Cangzhou Nearly 40 Years

GONG Yu1,XING Kai-Cheng2,WANG Pu3(1.Tangshan Meteorological Bureau,Tangshan 063000,China;2.Cangzhou Meteorological Bureau;3.College of Agronomy and Biotechnology,China Agricultural University)   

  • Online:2008-04-10 Published:2008-04-10

摘要: 采用线性分析方法和R/S方法相结合,对沧州地区年降水量和年均气温的变化特点和未来趋势进行分析。结果表明,该地区气温和年降水量的变化特点与未来趋势不尽相同。气温在过去35 a间呈上升趋势,变化率为0.394℃/10 a,同时Hurst指数为0.848,说明当地未来气温增加的趋势可能还将持续;过去51 a的年降水量呈现减少趋势,但降水量的Hurst指数仅为0.53,说明当地年降水量在未来有可能发生改变或者将保持基本稳定。

关键词: 沧州地区, 气温, 年降水量, 趋势

Abstract: By using linear and Rescaled Range Analysis(R/S),the change characteristics and the future trends of the annual precipitation and the annual average temperature in Cangzhou were analyzed.The results showed that change characteristics and the future trends of the temperature and annual precipitation were not same entirely.The temperature increased in the past 35 years with a change rate by 0.394 ℃ per ten years,while the Hurst index was 0.848 which indicated that there existed obvious Hurst phenomenon in the future.Although the annual precipitation was declining in the past 51years,but the Hurst index of the precipitation was only 0.53 which meant that the annual precipitation in the future was likely to change or remain stable in this region.

Key words: Cangzhou, Cangzhou, Temperature, Annual precipitation, Trend