Surface Air Temperature in China and Its Relation to Arctic Oscillation Index

Using the monthly surface mean temperature data at 160 station in 1958_1994, China Meteorological Administration, the interannual and interdecadly changes of air temperature in China in 37 years and its relation to Arctic Ocean oscillation index were analyzed. The obtained results are as follows: 1 since 1958_1994 years, the whole year, autumn and winter temperature in Northeast China obviously rises up, and for winter, the most obvious, the winter temperature in Xinjiang obviously rises up too, the summer temperature in South China obviously rises up. 2 Through the interdecadly change test of temperature in various regions, it is found that the temperature obviously rises up in the whole year, autumn and winter after 1983, and temperature in winter of Xinjiang after 1976, increases too, the temperature in summer of South China after 1976 obviously rise up. (3) on view of the whole nation, climatic warming in the north region of China is more significant than one in the south region of China, specially for winter. (4) There is close relation between Arctic Ocean oscillation(AO) and temperature of Northeast China. When AO index is low, sea level pressure near Icelan in winter is low, region of Siberian high reduce, the winter monsoon in East Asian comparatively weaken, the temperature of Northeast China in winter half year seem to obviously rise up.