南京冬季一次浓雾过程的微物理特征  

Microphysical Characteristics of A Winter Fog Event in Nanjing

作　　者：鲍磊[1] 杨军[1] 王巍巍[1] 刘端阳[1] 

机构地区：[1]南京信息工程大学大气物理与大气环境重点实验室,江苏南京210044

出　　处：《安徽农业科学》2009年第28期13700-13701,13704,共3页Journal of Anhui Agricultural Sciences

基　　金：江苏省自然科学基金重点招标项目(BK2007727);国家自然科学基金项目(40775010);公益性行业(气象)科研专项[GYHY(QX)2007-6-26]

摘　　要：2007年12月19～20日南京出现了一次浓雾天气,其中能见度小于50 m的强浓雾持续了13 h。结合自动气象站及能见度仪观测资料,利用美国DMT公司生产的FM-100型雾滴谱仪,分别连续观测了这一雾过程中雾滴谱分布、数密度、含水量等微物理参量。结果表明,此次雾过程具有爆发性发展特征,雾滴数密度、含水量及平均直径在40 min内骤增,能见度急剧下降,浓雾转变成强浓雾。A thick fog event occurred in Nanjing during 19-20th December 2007, the bad visibility below 50 meters lasted for more than 13 hours. Micro-physical characters and evolution of the fog had been analyzed based on the continually observed data of drop-size distribution, number concentration and liquid water content （LWC）, etc. by a FM-100 fog particle spectrometer, as well as on the routine observation data by a auto-weather station and a ZQZ-DN visibility meter in the fog episode. The result showed that the fog process had the outbreak characteristics with the irruption of droplet number density, LWC and the average diameter in 40 minutes, and the visibility of decline sharply, the heavy fog developed into a strong dense fog.

关 键 词：浓雾 雾滴尺度谱分布 微物理参数 南京 

分 类 号：S161.5[农业科学—农业气象学]