摘要
利用运城市1971～2000年的大雾资料,分析了大雾的气候特征、地域特征.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;运城大雾每个月都可形成,但冬季（11～12月）发生频率最高,雾日最少月为6月和7月;运城年雾日数呈上升趋势,并具有显著的长期趋势变化特征和3.6年的振荡周期;60～80年代大雾呈明显增加趋势,90年代略有下降;分析了雾的环流形势,并研究了大雾的客观预报方法.
Using the data of heavy fogs in Yuncheng from 1971-2000, the climatic and regional characteristics of heavy fog were analyzed . The results showed that the distribution of fogs in Yuncheng presents the characteristics of more fogs in basin areas while less in mountain areas. Although the heavy fogs can form in each month of a year, the occurring frequency of heavy fogs in winter （November - December） was the most, and that of heavy fogs in June and July were the least. The heavy fog days had the obvious increasing trend and the long-range tendency, and had the oscillation period of 3.6a. It had the obvious increasing trend in 1960s -1980s, and less decreasing in 1990s. The weather situations of fogs were analyzed, and the forecast method of heavy fog was studied and proved to be available.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2006年第4期40-46,共7页
Journal of Arid Land Resources and Environment
关键词
大雾
气候特征
预报
heavy fog
climatic characteristic
forecast
