2000-2016年珠海市酸雨变化特征及酸雨概念模型  

Variation characteristics and concept model of acid rain in Zhuhai city during 2000-2016

作　　者：陈虹颖 赵新锋 何志东 范绍佳 CHEN Hongying;ZHAO Xinfeng;HE Zhidong;FAN Shaojia(School of Atmospheric Sciences,Sun Yat-Sen University,Zhuhai 519082;Zhuhai Municipal Environmental Monitoring Station,Zhuhai 519000;Guangdong Provincial Observation and Research Station for Climate Environment and Air Quality Change in the Pearl River Estuary,Guangzhou 510275;Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai),Zhuhai 519082)

机构地区：[1]中山大学大气科学学院,珠海519082 [2]珠海市环境保护监测站,珠海519000 [3]广东省环珠江口气候环境与空气质量变化野外科学观测研究站,广州510275 [4]南方海洋科学与工程广东省实验室(珠海),珠海519082

出　　处：《环境科学学报》2020年第6期1998-2006,共9页Acta Scientiae Circumstantiae

基　　金：国家重点研发计划课题(No.2017YFC0209606,2016YFC0203305);国家自然科学基金重点项目(No.41630422)。

摘　　要：为评估我国酸雨控制效果与发展趋势,利用2000-2016年东亚酸沉降监测网(EANET)的监测数据及同步气象资料,研究了珠海市酸雨变化特征及EANET中国网所有4个城市(珠海、厦门、重庆、西安)的城市降水化学组分特征.利用HYSPLIT后向轨迹聚类和潜在源区PSCF分析方法,研究了珠海市降水气团和酸雨来源,建立了珠海市酸雨概念模型.结果表明:①珠海市酸雨日数与频率呈先增后减趋势,2008年后珠海市酸雨污染程度明显改善,我国酸雨控制效果明显.②沿海城市(珠海、厦门)与内陆工业城市(重庆、西安)降水离子组分区别明显,内陆工业城市酸雨受碱性颗粒物影响较大.③沿海城市(珠海、厦门)酸雨为硫酸-硝酸混合型;内陆工业城市(重庆、西安)酸雨以硫酸型为主,近年有向硫酸-硝酸混合型转变的趋势.④综合酸雨降水HYSPLIT后向轨迹聚类分析与PSCF潜在源区分析结果可建立酸雨概念模型,有助解释酸雨成因.珠海市强酸雨主要受珠海市外的珠三角地区污染物输送影响.In order to evaluate the control and developing trend of acid rain in China,the variation characteristics of acid rain in Zhuhai and the chemical composition of precipitation of all 4 EANET cities(Zhuhai,Xiamen,Chongqing and Xi′an)in China were investigated by using the acid rain monitoring data gathering by the EANET monitoring sites and meteorological observation data during 2000-2016.A concept model of acid rain in Zhuhai was developed,based on the analysis of source apportionment for the air masses and acid-causing substance by HYSPLIT modeling system and Potential Source Contribution Factor(PSCF)analysis method.The results showed that:①Significant decreasing trend of acid rain pollution since 2008 indicated the control of acid rain in China has achieved remarkable effects.②There were obvious differences between the ion compositions of precipitation in coastal cities(Zhuhai,Xiamen)and inland industrial cities(Chongqing,Xi′an),the acid rain in inland industrial cities were more affected by alkaline particles.③In coastal cities(Zhuhai,Xiamen)sulfuric and nitric acid were almost equally significant in the acidification of rain,while in inland industrial cities(Chongqing,Xi′an)the predominant acid was sulfuric acid and evolved to a mixed type of sulfuric and nitric acid in recent years.④A conceptual model was established by combining the results of HYSPLIT back trajectory cluster and PSCF analysis,which will be helpful for further understanding the cause of acid rain.The strong acid rain in Zhuhai was mainly affected by the regional transportation of pollutants from Pearl River Delta.

关 键 词：酸雨特征 后向轨迹 潜在源区 酸雨概念模型 珠海 

分 类 号：X517[环境科学与工程—环境工程]