【摘要】 利用浙江省环保厅发布的2004年9月以来的空气质量监测数据(API/AQI)和浙江省气象局2005年以来的逐时气象要素数据,分析浙江省近年的空气质量及其空间分布特征、与主要气象因子的相关性。结果表明:浙江省近年空气质量总体稳定,年际变化不大,但偶有区域性空气污染事件发生;春节效应明显,而星期效应较弱;区域上,浙北空气质量最差,浙中次之,沿海较好,浙西南山区更好,最佳为海岛舟山地区。主要污染物在监测API时期为PM10,2012年10月起改为监测AQI后,首要污染物为PM2.5取代,且臭氧(O3)作为首要污染物的比率凸显,AQI指数值比同期API高近15~30。进一步分析空气质量与(雾)霾、降水、连晴天数、风向风速等气象因子的相关性,发现适量降水和中等风速有利空气净化,连晴使空气污染加重;各地除舟山海岛地区外,空气质量与(雾)霾天气的出现比率较为一致。更多还原

【Abstract】 By Studying API(AQI) and its correlation coefficient with meteorological elements. It showed that the air quality of Zhejiang Province is stable in nearly decade besides several serious regional air pollution events and Spring Festival pollution is significant. Compared throughout the Province, the north is worst, the middle a little better, coastal area better than the middle, the southwest mountain region better than the coastal area, and Zhoushan islands is the best in all. PM10 is the primary pollutant before 2012 in API standard, since September 2012, new standard AQI put in work, the primary pollutants was replaced by PM2.5and ozone got a high ratio too, and still AQI value is 15~30 over API in corresponding time period. Furthermore, temperate precipitation and middle wind speed is good for air cleaning. Haze days annual average is highly coefficient with API(AQI) except Zhoushan islands.更多还原