南京地区霾天气特征分析  

Analysis of the characteristics of hazy phenomena in Nanjing area

作　　者：童尧青[1] 银燕[1] 钱凌[1] 安俊琳[1] 

机构地区：[1]南京信息工程大学应用气象学院,江苏南京210044

出　　处：《中国环境科学》2007年第5期584-588,共5页China Environmental Science

基　　金：江苏省自然科学基金资助项目(BK2006226);南京市环境保护局环保科技项目(200609)

摘　　要：利用南京气象站和江浦、六合、溧水、江宁、高淳等5个南京郊区气象观测站1961～2005年地面气象观测资料,对南京地区霾天气的气候特征、气象要素特征及其成因进行了分析.结果表明,南京地区6站霾天气均呈现出冬季>春季>秋季>夏季的季节特征;南京站45年来年霾日数呈明显上升趋势.能见度与相对湿度呈负相关;霾天气受气象要素的影响,静小风、较高相对湿度有利于霾天气出现.霾天气的增加可能是由总悬浮颗粒物(TSP),尤其是细颗粒物的增加导致的.The climatic characteristics and causes of hazy phenomena in Nanjing were analyzed based on surface observations obtained from Nanjing Meteorological Station and five suburban stations （Jiangpu, Liuhe, Lishui, Jiangning and Gaochun） from 1961 to 2005. The frequency of occurrence of hazy phenomena had the following trend winter 〉 spring 〉 autumn 〉 summer. The annual occurrence of hazy days had been increasing during the last forty-five years, and that a negative correlation exists between visibility and relative humidity during hazy periods. Meteorological factors have a significant effect on the occurrence of hazy phenomena. For example, hazy phenomena often occur when the wind speed is small and the relative humidity was high. The increasing trend of hazy days might be resulted from the increasing number concentration of total suspended particles （TSP） in the atmosphere, especially the fine-mode particles.

关 键 词：南京 霾 气候特征 大气污染 

分 类 号：X131.1[环境科学与工程—环境科学]