黄山天都峰重大森林火灾的气象分析

A Meteorological Analysis of Damaging Forest Fires on Celestial Capital Peak of Mt.Huangshan

用美国1972年NCEP/NCAR的全球日平均分析场资料、黄山光明顶气象资料和黄山风景区森林火灾资料分析表明,黄山天都峰森林火灾是发生在林火发生季节的林火发生时段,为11月13日至12月12日火险级别最高的时期。森林火灾发生前黄山长期受500hPa沿海浅槽后部西到西北气流控制,海平面处在东南伸展的高压带中;中低层湿度均为南伸干舌影响,水汽条件差;黄山受冬季风环流控制。

The NCEP/NCAR reanalysis data, the Bright-Top Peak surface meteorological data and the Mt. Huang forest fire data are analyzed in this paper. The results suggest that forest fires broke out forest fire periods in the forest fire season,and the very date of the highest danger class appeared within the period from Nov.13 to Dec.12, 1972.Before the fire occurrence, the mountain was in the control of 500hPa Northwest air current, the high pressure system extended to the southeast at the sea level, the dry area extended to the south at middle-lower atmosphere and vapour was lacking. The whole mountain was under the influence of winter monsoon.