| 近50 a中国大陆无雨日的时空变化特征分析 |
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| 引用本文： | 吴徐燕,杨德保,王式功,尚可政.近50 a中国大陆无雨日的时空变化特征分析[J].干旱区地理,2011(4):596-603. |
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| 作者姓名： | 吴徐燕 杨德保 王式功 尚可政 |
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| 作者单位： | 兰州大学大气科学学院甘肃省干旱气候变化与减灾重点实验室; |
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| 基金项目： | 国家科技支撑计划(2007BAC29B03)资助 |
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| 摘 要： | 利用中国大陆678个台站1958-2007年的50 a逐日降水资料,分析了年、季无雨日和不同干旱程度持续性无雨日的时空特征和气候变化.结果表明:我国无雨日的空间差异很大,局地无雨日变化受大地形影响明显,无雨日高值区在南疆盆地.低值区在四川盆地,年均最大持续无雨日在南疆高于130 d,四川盆地则少于15 d.近50 a无...
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| 关 键 词： | 无雨日 持续无雨日 时空变化 中国 |
Temporal and spatial characteristic of rainless days in mainland China in recent 50 years |
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| WU Xu-yan,YANG De-bao,WANG Shi-gong,SHANG Ke-zheng.Temporal and spatial characteristic of rainless days in mainland China in recent 50 years[J].Arid Land Geography,2011(4):596-603. |
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| Authors: | WU Xu-yan YANG De-bao WANG Shi-gong SHANG Ke-zheng |
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| Institution: | WU Xu-yan,YANG De-bao,WANG Shi-gong,SHANG Ke-zheng (College of Atmospheric Sciences,Gansu Key Laboratory of Arid Climate Change and Reducing Disaster,Lanzhou university,Lanzhou 730000,Gansu,China) |
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| Abstract: | In the recent years,with the global warming,the number of extreme drought events is increasing.During the period of the previous study,we just focused on drought climate changes caused by the decline of precipitation.However,the impact of drought events on agriculture is determined not only by precipitation but also by the number of persistent rainless days.The rainless days are a significant index indicating drought and it is necessary to do some research about it.However,we find few researches on the rain... |
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| Keywords: | rainless days persistent rainless days temporal and spatial characteristics China |
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