Variations Trend of Yearly Mean Air Temperature and Precipitation in China in the Last 50 Years

Some characteristics of climate changes are gained by analyzing 385 Chinese Meteorological Stations Data (CMSD).The results show that the variations of annual mean air temperature of CMSDexcept for a few stations are obvious increase warming trend, North and Northeast China is annual mean air temperature rapid increasing and the warmest region. The China-averaged precipitation has no obvious trend. The analysis of variation of CMSD shows that the China precipitation varies with differentregions. The area-averaged precipitation is the increasing trend in most of Xinjiang, while the area-averaged precipitation is obvious decreasing trendin central andnorth China. Both the annual area-averaged precipitations have good correlations with global mean sea surface temperature. Theseclimate change characteristics are explained by general circulationof atmosphere with reanalysis data (NCEP/NCAR)in this paper.