J4 ›› 2009, Vol. 27 ›› Issue (2): 103-110.

• 论文 • 上一篇    下一篇

宁夏六盘山区多年降水的时空变化分析

陈海波1,2严华生陈 文杜 鑫   

  1. (1.宁夏固原市气象局,宁夏 固原 756000; 2.云南大学大气科学系,云南 昆明 650091)
  • 收稿日期:2009-03-26 修回日期:2009-05-24 出版日期:2009-06-30 发布日期:2009-06-30
  • 作者简介:陈海波(1977-),男,汉族,宁夏陶乐人,工程师,主要从事气候统计分析预测工作.E-mai:l chenhaibo123@ hotmai.l com

Analysis on Precipitation Variation over the LiupanM ountain Area, Ningxia

 CHEN Hai-Bei1,2, YAN Hua-Sheng2, CHEN  Wen1, DU  Xin1   

  1. (1.GuyuanMeteorologicalBureau ofNingxia, Guyuan756000, China;2.Department ofAtmospheric Sciences, Yunnan University,Kunming650091, China)
  • Received:2009-03-26 Revised:2009-05-24 Online:2009-06-30 Published:2009-06-30

摘要:

选用宁夏六盘山区4个代表测站自建站以来至2007年的各月降水资料,用回归、周期和突变分析等统计方法进行分析,揭示了其多年时空变化规律。通过分析,得出了其季、年线性变化趋势和年变化周期及突变点,发现各区域降水存在着不同的变化规律,年降水均呈减少趋势,存在准14 a、11a等变化周期,并发生了多次突变。

关键词: 降水, 变化, 分析, 六盘山区

Abstract:

Based on themonthly precipitation datameasured by 4 representativemeteorological stations in Liupanmountain area during the period of1960-2007, the spatial and temporaldistribution ofprecipitationwas analyzed by using some statisticalmethods such as regression, periods and abrupt change analysis. The seasona,l annual trend ofprecipitation there and the primary cycles ofannualpre cipitation were revealed. Results show that annualprecipitationwas decreasing and the primary cycleswere fourteen and eleven years,and abrupt change occurredmany times in annual precipitation in this period.

Key words: precipitation, variation, analysis, Liupanmountain area

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