晋南大雾气候特征分析

利用晋南大雾历史资料，分析了晋南大雾的地域特征和气候特征，，结果表明：大雾具有明显的地域特征，盆地及河槽地较多，山区及台地少。晋南大雾主要出现在秋李和冬季．存季和夏季雾日较少。研究了晋南（10个代表站）雾日的年际及年代际变化，发现晋南年雾日呈上升趋势，且具有显著的长期趋势变化特征和6．7a及准4a的振荡周期。并研究了晋南大雾的生成、消散及持续时间等。

Analysis of Climatic Characteristic of the Heavy Fog in South Shanxi

Based on the fog historical data from South Shanxi province, the regional and climatic characteristics were analyzed. The results show that heavy fog has obvious regional characteristics and it appears in the basin andriver channels more than in mountains and terraces. The heavy fog in South Shanxi appears in autumn and winter more than in spring and summer. There was a rising trend of the fog days in South Shanxi based on studying the fogdays inter-annual and decadal variation of ten representative stations in South Shanxi. There was the changing characteristic of a long term trend and the oscillations period of 6.7a and quasi-4a. As same time the generation,evanishment and duration were studied.