中国农业气象

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新疆阿勒泰地区20cm蒸发皿蒸发量的变化特征

庄晓翠;张林梅;李海花;   

  1. 中国气象局兰州干旱气象研究所/甘肃省干旱气候变化与减灾重点试验室/中国气象局干旱气候变化与减灾重点开放试验室;新疆阿勒泰地区气象局;
  • 出版日期:2010-02-10 发布日期:2010-02-10
  • 基金资助:
    兰州干旱气象科学研究基金项目(IAM200914)

Change Characteristic of 20cm Pan Evaporation in Aletai,Xinjiang

ZHUANG Xiao-cui 1,2,ZHANG Lin-mei1,2,LI Hai-hua1,2(1.Institute of Arid Meteorology,China Meteorological Administration/Key Laboratory of Arid Climatic Changing and Reducing Disaster of Gansu Province /Open Key Laboratory of Arid Climatic Changing and Reducing Disaster,CMA,Lanzhou 730020,China;2.Meteorological Bureau of Aletai,Aletai 836500)   

  • Online:2010-02-10 Published:2010-02-10

摘要: 利用新疆阿勒泰地区7个气象台站1964-2001年连续38a的20cm口径蒸发皿资料,运用线性趋势法、Mann-Kendall法对该地区蒸发皿蒸发量的年代际变化趋势和突变情况进行了研究。结果表明:整个地区平均而言,20世纪70年代的年平均蒸发皿蒸发量最高,此后逐年代下降,大部分站点的年代际变化趋势与全区一致,东部有两站不同;夏季平均蒸发量最大、春季次之,冬季最少;除冬季外,平均季蒸发量与年变化一致。年平均及春、夏、秋季蒸发皿蒸发量呈波动变化状态,冬季呈显著的上升趋势。空间分析表明,夏秋季大部分站的蒸发皿蒸发量呈显著下降趋势,个别站呈显著上升趋势;冬季大部分站呈显著上升趋势,春季大部站变化不明显。突变检测表明,该地区年及夏秋季蒸发皿蒸发量80年代中期有一次明显的突变,春、冬季突变不明显。各站及不同季节趋势变化和突变时间的不同步,表明气候变化在不同的地区和季节会有不同的体现。

关键词: 蒸发皿蒸发量, 气候变化趋势, 突变

Abstract: The inter-annual and inter-decadal variation and abrupt change of 20cm pan evaporation in Aletai,Xinjiang was studied based on 20cm pan evaporation data of 7 weather stations from 1964 to 2001 by using the method of linear trend and Mann-Kendall.The results showed that the highest annual average pan evaporation was occurred in 1970s,and then declined.The highest evaporation was in summer,followed by spring and autumn.Annual evaporation was fluctuation,which was same to spring,summer and autumn.But it increased significantly in winter.There was an obvious abrupt change for pan evaporation in summer and autumn during 1980s.The results indicated that climate change had different performance in different seasons and regions.

Key words: Pan evaporation, Pan evaporation, Climate change, Abrupt change