大气科学2012，Vol.36Issue(2)：271-282,12.DOI:10.3878/j.issn.1006-9895.2011.11054
欧亚大陆积雪两种物理效应对2010年春末夏初华南降水的影响
Two Physical Effects of Eurasian Snow Cover on the Late-Spring and Early-Summer Rainfall in South China of 2010
摘要
Abstract
This study investigated the snow albedo and hydrological effects on the precipitation in South China in 2010, based on the singular value decomposition (SVD) analysis of the Eurasian snow depth dataset and the 160station rainfall dataset in China. Three ensemble simulations were conducted by using community atmosphere model 3. 1 (CAM3. 1). The first ensemble simulation includes both the snow albedo and the snow hydrological effect. The second ensemble simulation only considers the snow albedo effect but ignores the hydrological effect. The third ensemble simulation only considers the snow hydrological effect but ignores the albedo effect The results indicate that both these effects could have impacts on the South China rainfall. However, there are great differences in amplitudes and ranges of abnormities induced by those three simulations. The magnitude of abnormities caused by the snow hydrological effect is larger than that by the albedo effect. When those two effects work together, the result agrees well with observations and the magnitude is the largest. However, the magnitude is not equal to the sum of that caused by the snow albedo and hydrological effects respectively.关键词
欧亚大陆积雪/华南降水/数值试验/积雪反照率效应/积雪水文效应Key words
Eurasian snow cover/ late-spring and early-summer rainfall in South China/ numerical experiment/ snow albedo effect/ snow hydrological effect分类
天文与地球科学引用本文复制引用
许立言,武炳义..欧亚大陆积雪两种物理效应对2010年春末夏初华南降水的影响[J].大气科学,2012,36(2):271-282,12.基金项目
国家自然科学基金项目40921003、40875052,中国气象局行业专项项目GYHY200906017,国家重点基础研究发展规划项目2007CB411505 （）
