作　　者： ; ;

机构地区： 东莞南博职业技术学院

出　　处： 《佳木斯大学学报（自然科学版）》 2010年第1期157-160,共4页

摘　　要： 选取广东省1960～2005年16个测站逐日降水资料,运用趋势系数、累计距平等方法结合地理信息系统软件分析了46a来广东省年、季、月雨日的时空特征和降水量的趋势变化.结果表明:年均雨日减少2.1d/10a,降水量却明显增加.降水量与雨日的长期变化趋势并不一致,具有区域性和季节性.春季粤东北地区气候向相对干旱的趋势发展,而冬季整个区域降水强度有增大的趋势.另外,雨日减少突变发生在1984年左右. Climatic change of rain days and the spatial/temporal features of annual, seasonal, and monthly rain days in Guangdong province was investigated based on the observed data of 16 stations during the period of 1960 - 2005 by trend coefficient, accumulated anomaly ＆ GIS soft. The results showed that the annual rain days has declined at a mean rate of 2.1 days per decade, but rainfall increased. The secular trend variation of rain days completely accorde with that of rainfall and the season of negative trend and its scale displays this point. The spring climate develops towards relatively arid trend in the Northeast of Guangdong, but the precipitation intensity has the tendency to increase in the area of whole winter. The decrease in the number of rain days occurred abruptly around 1984.

关 键 词： 雨日 降水量 趋势系数 突变 广东省

领　　域： [天文地球]