Cause Analysis and Numerical Simulation of Heavy Fog Event on 2014 Early Winter in Hubei
Wang Lijuan
Yang Wei
He Mingqiong
Dai Juan
Wang Junchao
Tang Qiuyan
Abstract：Based on the observation data of expressway weather station in Hubei province and the reanalysis data (1° × 1°) of NCEP,the meteorological elements variation characteristics and formation mechanism of the fog weather process occurred in Hubei province from January 29 to 30,2014 are analyzed.And the fog process is simulated using numerical model with optimized parameterization scheme.The results show that the visibility of the fog process is basically opposite to the change of relative humidity,the variation trend of temperature and visibility are basically the same,and the wind speed is lower than before.The fog is formed by night radiation cooling after the impact of warm advection,is an advection radiation fog.The WRF model simulation results of this fog process show that the simulated fog range,intensity,time of formation and vanishing and so on are basically in accordance with the actual situation,except for the areas with higher altitude and greatly local affected.And this can provide some reference for the future fog forecast.
Keywords：heavy fogvisibilitydiagnostic analysisnumerical simulation
Publication Date：2017-07-02
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：7( 86-92 )