气象2018，Vol.44Issue(2)：313-319,7.DOI:10.7519/j.issn.1000-0526.2018.02.011
一次太行山焚风对霾强度的影响分析
Impact Analysis of a Taihang Mountain Fohn on Haze Intensity
摘要
Abstract
Utilizing the NCEP reanalysis data,and the every 5 minute data of ground automatic weather station,laser radar,wind profiler and microwave radiometer,we analyzed the changes of haze intensity in a typical fohn process in Shijiazhuang during the winter of 2015.The results show that the east of Taihang Mountain experienced obvious fohn due to the topographic trough over North China with static and stable weather situation.The fohn led to a rapid decline in humidity,which might cause the rapid rising of horizontal visibility,the decline of PM2.5 concentration and the weakening of haze intensity.Laser radar could visually reflect the changes of boundary layer structure and the concentration of pollutants before and after the fohn.By using the wind profile,we learned that the changes of wind direction (may vary a lot) and speed (may be larger) are obvious below 300 m,which proves the strong pulsation of wind.The horizontal and vertical scales of fohn are 25 km and 1 km,respectively.关键词
焚风/霾/能见度/PM2.5质量浓度Key words
fohn/haze/visibility/PM2.5 mass concentration分类
天文与地球科学引用本文复制引用
杨晓亮,杨敏,李江波,张珊..一次太行山焚风对霾强度的影响分析[J].气象,2018,44(2):313-319,7.基金项目
国家科技支撑计划项目(2014BAC16B04、2014BAC23B01)和河北省气象局预报员专项(16ky24)共同资助 （2014BAC16B04、2014BAC23B01）
