气象与环境学报2013，Vol.29Issue(4)：47-53,7.DOI:10.3969/j.issn.1673-503X.2013.04.007
太原雾天能见度预报
Visibility forecast of fog weather in Taiyuan
摘要
Abstract
Typical fog cases were simulated by the MM5 model in 2009 in Shanxi province.The results indicate that the simulated temperature at 2 m height is about 2 ℃ lower than the observed one;the simulated relative humidity is about 15％ higher than the observed one;the simulated wind speed at 10 m height is about 0-2 m·s-1 greater than the observed one.The forecast indexes of fog include three conditions in Shanxi province,namely,the liquid water content at 20 m height is from 0.13 g·kg-1 to 0.60 g·kg-1 ;there exists a temperature inversion layer between 20 m and 1500 m heights;the surface wind speed at 10 m height is less than 4 m·s-1.A visibility forecast model is established by the daily mean visibility,relative humidity and air pollution index in Taiyuan.The forecast results of visibility by the MM5 and CAPPS are corrected using the observed data,and the revised forecast equation is developed.Two fog cases are forecasted using the revised equation,and it suggests that the model could be applied in Shanxi province.关键词
能见度/相对湿度/液态水含量/逆温/风速/空气污染指数Key words
Visibility/ Relative humidity/ Liquid water content/ Temperature inversion/ Wind speed/ Air pollution index (API)分类
天文与地球科学引用本文复制引用
管琴,李青平,黄铃光,李杰..太原雾天能见度预报[J].气象与环境学报,2013,29(4):47-53,7.基金项目
山西省气象局开放式研究基金"山西省高速公路雾的数值预报系统的建设"(SXKKFTQ-20090201)资助. （SXKKFTQ-20090201）
