本文采用GIS技术分析广东省内26个气象站1958年~2010年的逐日降雨量数据得出,广东省各月最大日降雨量及其年内分布峰形结构、与月平均降雨量的对比关系、相对高值区时空转移等多个要素均依照纬度、海拔、海陆位置三个气候影响因子的不同分布而发生相应的有序变化,显示最大日降雨量时空分布总体上服从气候分布,而地形因素在局部地区对最大日降雨量时空分布具有明显的影响作用。
In this paper,it has analyzed the daily precipitation data statistics of 26 meteorological stations about 53- year in Guangdong Province with the application of GIS technology. The result shows that the monthly maximum precipitation and its inter- annual peak distribution,the comparative relations with the average monthly rainfall,the spatial- temporal transfer in relatively high value regions and other factors all have some corresponding and orderly changes in accordance with the different distribution of three climate impact factors of the latitude,the altitude and the sea- land positions. In general,the spatial- temporal variation of maximum daily rainfall obeys the climate change. Besides,it reveals that the topography factors have a significant effect on the spatial- temporal variation of maximum daily rainfall in the local areas.