气象学报2016，Vol.74Issue(2)：200-212,13.DOI:10.11676/qxxb2016.015
江苏地区一次罕见持续性强浓雾过程的成因分析
A discussion on the reason for a rare persistent heavy fog event in Jiangsu Province
摘要
Abstract
Using the atmospheric boundary layer gradient observations,the second level radiosonde data,visibility observa-tions,high temporal and spatial density of meteorological observation data along the highway,and NECP 1°×1°reanalysis da-ta,the formation and maintenance mechanism for the persistent heavy fog during 31 November to 9 December 2013 are ana-lyzed.The results show that the process is characterized by long duration,wide range,and low visibility with high concentra-tions of pollutants.Analysis of the synoptic weather pattern shows that Jiangsu province was under the control of continental high pressure,which sustained there for a long time.The fog occurred over the uniform and high pressure zone.Apparently such a synoptic pattern provides an important condition for the formation and continuance of the fog.Surface layer inversion, low-level downdraft and southeasterly flow of warm and wet air are also important reasons for the formation of this heavy fog. The double inversion layers with a large depth provide important thermal conditions favorable for the formation of heavy fog, while the intrusion of weak cold airmass directly triggered the outbreak and intensification of the fog.关键词
强浓雾/持续性/爆发性/成因Key words
Heavy fog/Duration/Outbreak/Formation分类
天文与地球科学引用本文复制引用
焦圣明,朱承瑛,朱毓颖,袁成松,祖繁,孙康远..江苏地区一次罕见持续性强浓雾过程的成因分析[J].气象学报,2016,74(2):200-212,13.基金项目
资助课题“十二五”国家科技支撑计划（2014BAG01B01）、公益性（气象）行业专项（GYHY201306043、GYHY201406029）、国家自然科学基金项目（41575135）、江苏省气象局科研基金（KM201511）。 （）
