摘要
利用上海11个气象站点近50年的雾日和霾日统计资料,从时间和空间两方面分析了上海雾、霾日数的气候特征和变化规律。结果表明,1951—2007年期间上海市区雾日数显著减少,远郊雾日数在20世纪70年代和80年代较多,在21世纪最初7年最少。上海市区和远郊霾日数在1954—2007年期间总体呈增加趋势,且增加主要发生在1980年以后,在2001—2003年期间霾日数较多。上海雾和霾日数以冬季最多,夏季最少。1960—2007年期间,上海雾日数除在崇明和青浦增加外,在其它区县都减少;霾日数在所有区县都呈增加趋势,其中在市区增加最快。
Based on the fog and haze data from 11 meteorological stations in Shanghai, the temporal and spatial climatic characteristics and change laws of fog and haze days in recent 50 years were analyzed. The results indicate that from 1951 to 2007, the fog days in urban area of Shanghai was significantly de- creased. Fog days in exurban area of Shanghai were the most in 1970s and 1980s, the least in the first 7 years of the 21st centuries. Haze days in urban and exurban areas of Shanghai were increased from 1954 to 2007 as a whole, and such increase was mainly occurred after 1980. During the period of 2001 to 2003, haze days were the most in Shanghai. In winter, Shanghai has the most fog and haze days, and in summer, it has the least fog and haze days. From 1960 to 2007, fog days were decreased in most regions of Shanghai, but haze days were increased in all regions of Shanghai, especially the haze days increased rapidly in urban.
出处
《高原气象》
CSCD
北大核心
2008年第B12期138-143,共6页
Plateau Meteorology
基金
上海市气象局研究型业务专项项目(YJ200805
YJ200803)
国家"十一五"科技支撑计划重点项目(2007BAC29B05)
国家863计划项目(2006AA)共同资助
关键词
上海
雾日数
霾日数
气候特征
Shanghai
Fog days
Haze days
Climatic characteristics
