1961-2007年克拉玛依雾的气候特征分析

Climate Characteristic Analysis on Fog in Kelamayi from 1961 to 2007

利用克拉玛依气象站1961—2007年的地面气象观测资料,分析近47a克拉玛依雾的年代、季、月变化特征,总结了雾的生消、持续时间的特点,并对雾前、雾中的日平均气温、平均相对湿度、风速等气象要素的变化做了分析。结果显示20世纪70年代开始克拉玛依雾日出现突增,其中以冬季雾日的增多最明显;持续时间≥6h的雾日有明显增加,春秋季增幅最大;持续时间>12h的浓雾所占比例较小,但也呈增多趋势。

Based on the surface observation meteorological data from 1961 to 2007 at Kelqmayi, the inter-decade, seasonal and monthly fog change characteristics were analyzed, and the fog inception and dissipation time and duration were summed, besides the elements variety of daily average temperature, average relative humidity and wind speed at pre-fog and in the fog to be persistent were also analyzed. The results showed that the fog days in 1970s were jumped obviously, and this cause was mainly the increase of winter fog day; the fog day with duration ≥6h was increased in evidence and the amplitude in spring and autumn was maximal; and the heavy fog with duration ≥12h occurred seldom with a tendency of increasing yet.