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大气科学  2008 

中国地区空中云水资源气候分布特征及变化趋势

DOI: 10.3878/j.issn.1006-9895.2008.05.09

Keywords: 中国云水资源,气候特征,变化趋势,ISCCP资料

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Abstract:

利用1984~2004年国际卫星云气候学计划(ISCCP)的云水路径(CWP)资料,分析了中国地区空中云水资源的分布特征、变化趋势以及与大气环流和湿度场的关系。研究发现,中国地区CWP的分布与大气环流、地形特征和大气湿度分布及水汽传输密切相关,中国地区CWP存在明显的季节变化,6月全国平均CWP最高,10月最低,不同地区季节变化差异明显。从变化趋势看,中国地区CWP以增加为主,青藏高原东部、内蒙古东部地区以及西北东部地区CWP的增加趋势较强。全国范围内,冬季和秋季CWP增加较大,春季和夏季增加较小。这些变化主要与大气环流变化导致的抬升运动的增强以及大气湿度(水汽)增加有关。中国地区空中云水资源在全球变暖的背景下表现出增加的趋势,符合气温增加导致水循环增强的观点。

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