文献类型：期刊文献

中文题名：广东“龙舟水”降水量成因分析

英文题名：Causation Analysis of Dragon-Boat Precipitation in Guangdong Province

作者：范伶俐[1,2];郭品文[1]

机构：[1]南京信息工程大学大气科学学院,江苏南京210044;[2]广东海洋大学海洋与气象学院,广东湛江524088

年份：2009

卷号：29

期号：6

起止页码：61

中文期刊名：广东海洋大学学报

外文期刊名：Journal of Guangdong Ocean University

收录：CSTPCD

基金：广东海洋大学科研项目(0812070)

语种：中文

中文关键词：天气学;龙舟水;环流形势;对流活动;陆面过程

外文关键词：synoptic meteorology; dragon-boat precipitation; circulation pattern; convection; land-surface process;

中文摘要：利用NCEP再分析资料、NOAA的OLR资料及GLDAS/NOAH的陆面资料对"龙舟水"前后的特征进行分析,结果表明:"龙舟水"期间,北半球中高纬度维持稳定的大气环流形势,有利于将冷空气引导至华南沿海;副热带高压加强西伸、孟加拉湾维持稳定的槽区,使得华南沿海暖湿气流加强,强暖湿气流为"龙舟水"过程的强降水提供充足的水汽和能量;旺盛的对流为降水提供动力条件;"龙舟水"过程前后的广东地区下垫面状况(陆面过程)的差异,对"龙舟水"期间该地区一些具体对流事件的启动和发展也有影响。

外文摘要：The characteristics of GDDBP were analyzed by using NCEP reanalysis data, NOAA OLR data and GLDAS/NOAH land surface state and flux parameters data. The results show that： during GDDBP process, Northern Hemisphere in the middle and high latitudes maintains a stable atmospheric circulation situation, which is conducive to the cold air into the South China coast; subtropical intensification and westward extension are strengthened, and a stable trough maintains in the Bay of Bengal, which bring strong warm and humid air to the South China coast, providing adequate moisture and energy for GDDBP; strong convections provide the dynamical conditions for the precipitation; and the difference of land-surface process has effect on a few concrete convection events during GDDBP.