摘要
使用1961～2000年河南省75个站的月降水量、月平均气温和相对湿度资料,计算了各站历年的湿润度指数,并在对该指数聚类分析的基础上对河南省进行了干湿区划.结果表明:河南全区可分为5个气候区,各区的地表干湿状况具有一定的差异;就平均而言,全区地表呈缓慢变干的趋势,这种状况可能是由于降水量减少和温度升高造成的.
Based on monthly precipitation, mean monthly temperature and relative humidity of 75 meteorological stations in Henan Province from 1961 to 2000, the wetness index and the water budget in the surface are calculated. The results show that all stations are divided into 5 types with cluster analysis method. The wetness index and water deficiency over the surface has obvious difference in the five areas. The tendency of the wetness index over the surface declines slowly. The dryness trend properly results in the reduction of precipitation and the increase of temperature.
出处
《气象》
CSCD
北大核心
2005年第11期24-27,共4页
Meteorological Monthly
