The climate background and synoptic situation of fog at Great Wall Station,Antarctica  

作　　者：许淙 杨清华 薛振和 

机构地区：[1]National Marine Environmental Forecasting Center

出　　处：《Chinese Journal of Polar Science》2010年第2期160-166,共7页极地研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grants No.41006115,41076128);the National Key Technology Research and Development Program of China(Grant No.2006BAB18B03)

摘　　要：Based on the observed and NCEP reanalysis data from 1985 to 2006, the climate background and synoptic situation of fog at Great Wall Station were analyzed.It is shown that the seasonal variation of fog is controlled by the change of general circulation and local pressure field.Three favorable typical synoptic situations for fog development arc found,the Front-of-A-Depression type,the Saddle-Shaped-Field type and the Passing-Weak-Cyclone type.The first one is the most important situation.Advection cooling fog is dominant at Great Wall Station,but there are other kinds of fog as well.As a result,some helpful principles for local fog forecasting are given.Based on the observed and NCEP reanalysis data from 1985 to 2006, the climate background and synoptic situation of fog at Great Wall Station were analyzed.It is shown that the seasonal variation of fog is controlled by the change of general circulation and local pressure field.Three favorable typical synoptic situations for fog development arc found,the Front-of-A-Depression type,the Saddle-Shaped-Field type and the Passing-Weak-Cyclone type.The first one is the most important situation.Advection cooling fog is dominant at Great Wall Station,but there are other kinds of fog as well.As a result,some helpful principles for local fog forecasting are given.

关 键 词：sea fog synoptic situation Great Wall Station ANTARCTIC 

分 类 号：P426.4[天文地球—大气科学及气象学]