南极长城站海雾形成的气候背景及天气形势分析  

CLIMATOLOGICAL ANALYSIS FOR THE SYNOPTIC SITUATIONS OF THE FOG AT THE GREAT WALL STATION,ANTARCTIC

作　　者：许淙[1] 杨清华[1] 薛振和[1] 

机构地区：[1]国家海洋环境预报中心,北京100081

出　　处：《极地研究》2010年第1期42-47,共6页Chinese Journal of Polar Research

基　　金：国家自然科学基金重点项目(40930848);科技部"十一五"国家科技支撑计划重点项目(2006BAB18B03);中国极地科学战略研究基金项目(20070227);国家海洋局青年科学基金项目(2008221)资助

摘　　要：基于长城站气象观测数据和NCEP再分析资料,分析研究了长城站海雾的发生背景和天气形势。认为长城站海雾的季节性变化是大气环流、地面气压场变化的结果;长城站海雾形成的天气形势基本可分为低压锋前型、鞍型场型和弱气旋过境型3类,其中低压锋前型是长城站海雾形成的主要天气形势。长城站以平流冷却雾为主,也存在其它类型的雾。本文从天气学角度分析了长城站海雾发生的原因,为该地区的海雾预报提供了依据。Based on the observed data of Great Wall Station and NCEP data from 1985 to 2006, ana- lyzation was made by climatological statistics and synoptic analysis. It is showed that the seasonal variation of the fog was controlled by atmospheric circulation and pressure field. Three typical synoptic patterns of the fog are found, they are the Front-of-A-Depression type, the Saddle-Shaped-Field type and the Passing-Weak-Cyclone type. The Front-of-A-Depression type is the most important synoptic situation. Mostly advection cooling fog was showed at the Great Wall Station, but there are other kinds of fog. As the result some helpful principles for local fog forecasting are given.

关 键 词：海雾 天气形势 长城站 南极 

分 类 号：P732[天文地球—海洋科学]