Variation Characteristics of Precipitation Water and the Actual Precipitation over Shanxi

The whole layer of precipitation water and the actual precipitation variation characteristics of the Shanxi over the past 14 years was analyzed with 2000- 2013 NCEP / NCAR monthly mean reanalysis data and the actual precipitation data. The results showed that: the precipitation water of the region has a low value of year average,the value of summer and fall are higher than that of spring,and winter has the lowest value,and there shows an opposite change tendency in autumn and spring; the actual precipitation seasonal changes a lot over seasons,most precipitation are in spring and summer,followed by autumn and winter,generally the value of actual precipitation are higher than that of precipitation water; the actual precipitation has an obvious interannual change,and shows a negative trend,changes in annual precipitation water are not consistent with the actual annual precipitation,but also display a negative trend.