中国夏季日降水频次的周末效应

被引:33
作者
龚道溢 [1 ]
郭栋 [1 ]
罗勇 [2 ]
机构
[1] 北京师范大学资源学院环境演变与自然灾害教育部重点实验室
[2] 中国气象局国家气候中心
关键词
降水; 周末效应; 中国;
D O I
暂无
中图分类号
P468 [气候资料];
学科分类号
摘要
利用1979-2002年194个站日降水资料分析了我国东部地区夏季日降水频次的周内变化,发现降水频次存在明显的周末效应。表现为周末降水频次的增加以及周中降水频次的减少,极小频次出现在星期三。其中小雨频次的周末效应表现更为突出。造成降水周末效应的主要原因可能与人类活动导致的气溶胶浓度的周循环有关。夏季周中气溶胶浓度的增加不利于暖云降水,反之,周末气溶胶浓度的下降则导致了周末降水频次的相对偏高。
引用
收藏
页码:131 / 134
页数:4
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