三亚地区冬春季大气污染特征观测研究  

Characteristics of air pollutants in Sanya during winter and spring

作　　者：郑凤魁 袁铁[1] 吉东生[2] 刘子锐[2] 王跃思[1,2] 胡波[1,2] 

机构地区：[1]兰州大学大气科学学院,兰州730000 [2]中国科学院大气物理研究所,北京100029

出　　处：《南京信息工程大学学报（自然科学版）》2016年第2期129-137,共9页Journal of Nanjing University of Information Science & Technology（Natural Science Edition）

基　　金：中国科学院战略性先导科技专项(XDB05020000,XDA05100100);国家自然科学基金(41230642,41321064)

摘　　要：为了研究海南省三亚地区冬春季大气污染状况,于2011年12月—2013年4月的冬春季节在三亚鹿回头村(监测点位于三亚市郊,三面临海,周围没有工业污染源)开展了大气主要污染物(NOx、O_3、PM2.5)的连续监测,利用观测数据对三亚地区冬春季大气污染变化特征进行分析.结果表明:三亚地区大气污染物浓度均低于国家一级标准的浓度值,NO、NO_2、NOx、O_3、PM_(2.5)质量浓度的日平均值(平均值±标准差)分别为(2.1±2.2)、(5.2±3.4)、(7.3±3.8)、(59.8±28.4)和(17.5±14.3)μg·m-3.在污染物的日变化方面,NOx、PM2.5呈现典型的双峰型,其峰值分别出现在08:00和17:00,峰谷在13:00;O_3的日变化为单峰型,峰值出现在13:00.通过后向轨迹分析发现,三亚地区大气污染物受局地源排放和外源输送的共同影响,来自陆地的气流易造成污染物的积累,而来自海上的气流则有利于污染物的清除.Atmospheric pollutants including NOx,O3 and PM2？5,along with meteorological factors were intensively monitored in Luhuitou village of Sanya,which is the southernmost tip of Hainan Island,in order to study the charac？teristics of air pollution in Sanya. Located in the outskirt of Sanya,the monitoring station is surrounded by sea in three directions and without industrial pollution sources.From December of 2011 to April of 2013,the variation prop？erties of NOx,O3 and PM2？5 in winter and spring were analyzed and the sources of pollutants were investigated using backward trajectory method.The results show that,the concentrations of air pollutants in Sanya were under the values listed as first level in national standard,with the daily average value of NO,NO2,NOx,O3,and PM2？5 being （2？1± 2？2）,（5？2±3？4）,（7？3±3？8）,（59？8±28？4）,and （17？5±14？3）μg·m-3,respectively.The diurnal variations of NOx and PM2？5 showed double？peak patterns, with the maximum concentrations appeared at 08：00 BJ （ Beijing time） and 17：00 BJ;while the diurnal variation of O3 exhibited a single peak which occurred at 13：00 BJ.Based on backward trajectory method,it was found that pollutants in Sanya came from local and regional sources,and the con？tinental air mass usually led to accumulation of air pollutants,whereas the marine air masses usually diluted the air pollution.

关 键 词：三亚地区 大气污染 臭氧 PM2.5 氮氧化物 

分 类 号：P425.6[天文地球—大气科学及气象学]