气象2016，Vol.42Issue(3)：372-381,10.DOI:10.7519/j.issn.1000-0526.2016.3.013
江西省区域性平流雾气象要素特征分析及预报思路
Analysis on the Characteristics of Meteorological Factors and Forecast Ideas for Regional Advection Fog in Jiangxi
摘要
Abstract
Based on the 2000-2012 conventional surface observations and sounding data in Jiangxi Prov-ince,this paper analyzed 54 regional advection fog weather events and meteorological factors by using the synthetic and statistical method,obtaining the statistical characteristics of the advection fog temperature inversion layer,temperature and humidity conditions,low-level wind field and the impact system.The re-sults showed that:(1 )The Jiangxi regional advection fog mainly occurs in February and March,seen more in the north than in the south.(2)The situation features are as follows:The low-level of Jiangnan Region has obvious warm and humidity advection,the shear line or convergence zone at 850 hPa is located in the region from Yangtze River to Jianghuai,the southwest wind speed at 925 hPa and 850 hPa is up to 3-8 m ·s-1 and 7-15 m·s-1 respectively.Surface situation is mostly inverted trough and low pressure in the forepart of cold front,followed by the bottom of high pressure.(3 )The relative humidity is ≥80% below 850 hPa,while it is ≤50% in the middle layer at 500 hPa.The surface air temperature and dew point range within 10-16℃,and the air is nearly saturated.(4)The advection fog mostly has single tempera-ture inversion layer,whose inversion layer is higher and thicker than radiation fog.The intensity of tem-perature inversion is mainly between 1℃and 3℃.Finally,the forecast focuses and forecast ideas of advec-tion fog weather in Jiangxi (South China)are put forward.关键词
平流雾/暖平流/逆温/相对湿度/预报着眼点Key words
advection fog/warm advection/temperature inversion/relative humidity/forecast focuses分类
天文与地球科学引用本文复制引用
许爱华,陈翔翔,肖安,许彬..江西省区域性平流雾气象要素特征分析及预报思路[J].气象,2016,42(3):372-381,10.基金项目
中国气象局气象关键技术集成与应用面上项目（CMAGJ2013M26）资助 （）
