【作者】 娄德君； 李治民； 王冀； 张雪梅；

【Author】 Lou Dejun1,Li Zhimin1,Wang Ji2,Zhang Xuemei3 (1 Qiqihar Meteorological Bureau,Qiqihar 161006.2 Nanjing University of Information Science & Technology,Nanjing 210044.3 Harbin Meteorological Bureau,Harbin 150080)

【机构】 黑龙江省齐齐哈尔市气象局； 南京信息工程大学； 哈尔滨市气象局；

【摘要】 对东北地区1957～2000年32个站的气温资料及极端气温指数进行了计算和分析,结果表明:东北地区的气温呈显著的上升趋势,气温存在着7-8a、4a左右和18a左右的周期变化和突变特征;东北地区的的霜日、冰日、冷日、冷夜和日平均温差为减少的趋势,暖日、暖夜、夏天日数、热夜日数和生长期长度主要为增加的趋势。冷夜减少、暖夜增加的幅度大于冷日减少和暖日增加的幅度,说明对于东北地区的增暖来说,夜间温度上升的贡献要更大一些。同时分析表明,北部地区要比南部地区增暖幅度大一些。气温升高及极端气温指数的变化对东北地区的生态环境、农业生产等方面均有一定的影响。更多还原

【Abstract】 Based on daily average temperature,maximum temperature,minimum temperature data of 32 weather stations in Northeast China from 1957 to 2000,the variation characteristics of temperature and extreme temperature indices are analyzed,and the results show that the temperatures in Northeast China present obviously increasing tendency,there are 7-8 years,4 years and 18years or so periodic and abrupt characteristics in the variation of temperature.The frost days,ice days,cold days,cold nights and mean of diurnal temperature range show decreasing tendency,while warm days,warm nights,summer days,tropical nights and growing season length mainly present increasing tendency.The scope of decreasing cold nights and increasing warm nights is greater than that of decreasing cold days and increasing warm days,which shows that,the nights temperature increasing contributes more to the warming in Northeast China.The results also show that warming scope in the northern areas is larger than that in the southern areas.The temperature increasing and the variations of extreme temperature indices have certain influences on the eco-environment,agriculture etc.更多还原