利用1980-2006年27年间黑龙江省林区发生的37次特大森林火灾资料,针对高空500hPa温压场的结构,将着火前3天短期时段内的天气形势分为4类8型,在此基础上对相对湿度与气温等因子的变化进行了分析,并对高火险日数及前期气候与大气环流特征进行了预报。 Based on the data of 37 superficial forest fires occurring in the forest area of ​​Heilongjiang Province during the 27 years from 1980 to 2006, according to the structure of the 500 hPa temperature and pressure field at high altitude, the weather conditions in the short period of 3 days before the fire were classified into 4 types and 8 types. On the relative humidity and temperature changes and other factors were analyzed, and the high number of fire days and pre-atmospheric and atmospheric circulation characteristics of the forecast.