【摘要】 为了有效减轻因雾和霾造成的灾害损失,为准确预报雾和霾提供重要依据,利用日照市1981—2014年地面气象观测资料,分析了日照市雾和霾的气候变化特征和雾霾等级分布。结果表明:近34年来日照市雾和霾的日数均整体呈上升趋势,但2000年后雾日明显减少,霾日开始增多。日照市霾日的四季分布是冬春季多,秋夏季少,且主要以轻微霾为主;而雾日则呈春夏多、冬秋少的沿海特点,且以浓雾为主,春夏盛行的东南风非常有利于沿海地区雾的形成和维持。更多还原

【Abstract】 In order to effectively reduce disaster loss caused by fog and haze, provide important basis foraccurate prediction of fog and haze, this paper used ground meteorological observation data from 1981 to 2014 of Rizhao, analyzed and studied the climate change characteristics and the grade distribution of fog and haze.Preliminary results showed that on the whole, days of fog and haze in Rizhao had a rising trend in the nearly 34 years, but the fog days decreased significantly after 2000 and haze days began to increase at the same time.The distribution of haze days in Rizhao was more in the spring and winter, but less in the fall and summer, andmainly slight haze. However, the distribution characteristic of fog days presented coastal characteristics. Fogwas more in the spring and summer, but less in the fall and winter, and mainly thick fog. The main reason wasthat prevailing southeast wind in spring and summer was very favorable for the formation and maintaining ofcoastal fog.更多还原