摘要
利用2005年1月至2012年12月辽宁省营口市的能见度、相对湿度、降水资料,对雾—霾天气的年、月、日分布特征和各等级雾—霾所占比例进行了分析,结果表明:营口市近年来雾—霾天气的年际变化特征不明显,雾—霾天气以轻雾和轻微霾为主,雾占9.1%,年平均雾日为7 d,重度霾和中度霾很少,平均每年约为0.25、0.58 d。雾主要出现在9月至次年4月,轻雾和霾主要出现在7月至次年1月,轻雾和霾在1月和8月出现双高峰值,轻雾在8月最多,霾在1月最多,春冬季霾明显比轻雾多。雾在8:00出现的次数最多,其次是2:00,14:00最少;霾在8:00出现的次数最多,14:00次之,2:00最少。
The distribution characteristics of fog and haze weather were analyzed using observation data in Yingkou City. The data from January 2005 to December 2012 including visibility,relative humidity and precipitation was observed. The results showed that the interannual change of fog and haze was not obvious in recent years in Yingkou City. Light fog and slight haze mainly occurred,but severe and moderate haze rarely occurred,about 0.25 and 0.58 days in a year. The annual average fog day was 7 days,with probabilities of 9.1%. Fog mainly occurred from September to April,and light fog and haze mainly occurred from July to January and appeared twin peaks in January and August. light fog days were the most in August,but haze days were the most in January. Haze days were more than light fog days in spring and winter. The fog that happened at eight o’clock AM was more than the fog that happened at two o’clock AM. The fog that happened at two o’clock PM was less than the fog that happened at eight o’clock PM. The haze that happened at eight o’clock was more than the haze that happened at two o’clock PM. The haze that happened at two o’clock was less than the haze that happened at eight o’clock. PM.
出处
《现代农业科技》
2015年第2期237-239,共3页
Modern Agricultural Science and Technology
基金
2013年辽宁省营口市气象局课题"营口市雾霾天气预报方法研究"
关键词
雾
霾
分布特征
辽宁营口
fog
haze
distribution characteristics
Yingkou Liaoning
