Spatial/Temporal Variations Of Winter Air Temperature In North-east China And The Relationship Between SSTA In Tropical Indian Ocean And The Air Temperature

Based on the analysis of the winter air temperature characteristics in the North-east China, this paper particularly discusses the current factor and previous factor which influenced the winter air temperature in the North-east China .the main results may be concluded as follows .(1) the winter air temperature in North-east China was in cold period before 1985, and lowest in 1960's; were in warm period after 1985,and got warmest in this period, the catastrophic time is 1986 ?(2) The air temperature anomaly existed 3-4-year,8-9-year and!6-18-year periodic variation in winter in North-east China ?(3) The warming trend was obvious in the recent 49 years and reached to a rate of 0.351?C /10-year,was stronger in west-south and weaker in north-easto(4) the warming trend was similar with that in many areas of China. Its warming was the higher in China,,(5) The current atmosphere circulation anomaly is the current factor influenced the winter air temperature in the North-east China ,and it includes Siberian high anomaly, the East Asian trough anomaly ,the acreage of polar vortex anomaly ,the Asian Winter Monsoon anomaly and the anomaly of the west-wind circulation in East-Asian.(6) Winter air temperature in North-east China has important relationship with SSTA in tropical Indian Ocean particularly in the area (84癊-940E,6癝-0?,and the key period is from May to July in the current year.