珠江区降水量时空分布及变化特点分析  

Characteristics of Temporal and Spatial Distribution of Precipitation in Pearl River Area

作　　者：姚章民[1] 

机构地区：[1]水利部珠江水利委员会水文局,广东广州510610

出　　处：《水文》2009年第S1期72-73,21+21,共3页Journal of China Hydrology

摘　　要：通过对珠江区历史降水资料系列的分析评价,研究其降水的时空分布特点及变化规律。珠江区的降水水汽源自南海、西太平洋及孟加拉湾,降水时空分布和季风活动、地形等因素密切相关。降水量东西差异大,南北差异小,自东南向西北逐渐递减;降水量年际变化较大,年内多雨期降水量一般占全年的70%～80%。Based on the analysis and evaluation of the historical data of rainfall,temporal and spatial distribution and changes of precipitation in the Pearl River area were studied.The water vapor of precipitation of the Pearl River area are from the South China Sea,Western Pacific and the Bay of Bengal,the temporal and spatial distribution of precipitation are closely related to the factors such as the topography and monsoon activities.The precipitation differences between the east and west are greater than the north and south,and the precipitation are gradually decreasing from southeast to northwest.The annual variation of precipitation is larger and the precipitation during the rainy period of a year usually accounts for 70%～80%.

关 键 词：降水量 特点 时空分布 珠江 

分 类 号：P333.1[天文地球—水文科学]