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《Journal of Anhui Agricultural Sciences》 2010-09
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Analysis on the Heavy Fog and Atmospheric Pollution Process in Shanghai During December 14-15th,2006

WANG Feng-yun et al (Institute of Atmospheric Physics,Chinese Academy Of Sciences,Beijing,100029 )  
A process of continuous heavy fog and air pollution occurred in the eastern china including Shanghai,Nanjing,Hefei etc. during 14-15th,December,2006. Based on the GTS synoptic data,sounding data and NCEP/NCAR reanalyzed dataset,from the aspects of the weather situation,vapor condition,dynamic factor,temperature stratification,and air quality,the contribution of foggy conditions and atmospheric pollution in the fog process to continuous heavy fog were analyzed. The results showed that 1 000 hPa fluid flux divergence(FD),vertical velocity(ω) and divergence difference(ΔDIV) between 1 000 hPa and 500 hPa had not significant correlation with visibility,while relative humidity(RH) near ground had significant negative correlation,temperature lapse rate(γ)near ground had significant positive correlation,therefore,RH≥85%、γ0.2 ℃/100 m could be regarded as the necessary conditions of fog formation. In addition,the lowest air visibility had intense negative correlation with daily averaged API in the meantime,"API rising up to 150" could be an important criterion of fog formation in Shanghai Hongqiao international airport.
【Fund】: 中国科学院知识创新工程领域前沿项目(IAP07313)
【CateGory Index】: P426.4;X51
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