摘要
利用轨迹聚类分析、轨迹扇区分析(TSA)和潜在源贡献函数(PSCF)分析3种方法研究了2013年6月至2016年5月舟山市的PM_(2.5)输送路径和潜在来源。聚类分析显示,舟山市PM_(2.5)夏季主要受来自偏南方向的气团影响,冬季主要受来自偏北和西北方向的气团影响,与季风方向一致,以短距离传输为主。TSA结果与轨迹聚类分析类似,综合考虑后向轨迹停留时间和PM_(2.5)平均浓度,研究期间西北和偏北方向的扇区对舟山市PM_(2.5)的贡献率最大,达47.3%。PSCF分析显示,舟山市PM_(2.5)的潜在来源贡献区域主要集中于江苏省、山东省南部、浙江省北部和安徽省东部。
Based on PM 2.5 concentrations from June 2013 to May 2016,the transport pathways and the potential sources of PM 2.5 in Zhoushan were investigated using trajectory cluster analysis,trajectory sector analysis(TSA)and potential source contribution function(PSCF)analysis.Cluster analysis showed that PM 2.5 in Zhoushan mainly transported by short distance pathways from south in summer and from north or northwest in winter,which was in accordance with the monsoon.The results of TSA were similar to those of cluster analysis.Considering both backward trajectories’retention time and PM 2.5 concentration,the PM 2.5 contribution percentage from the northwest and north sectors had the greatest influence on Zhoushan,reaching 47.3%.The results of PSCF analysis revealed that the potential sources of PM 2.5 in Zhoushan were mainly located in Jiangsu,south of Shandong,north of Zhejiang and east of Anhui.
作者
黄仲文
彭成辉
杨梦蓉
何萌萌
佟磊
唐剑锋
肖航
HUANG Zhongwen;PENG Chenghui;YANG Mengrong;HE Mengmeng;TONG Lei;TANG Jianfeng;XIAO Hang(Institute of Urban Environment,Chinese Academy of Sciences,Xiamen Fujian 361021;University of Chinese Academy of Sciences,Beijing 100049;Ningbo Urban Environment Observation and Research Station,Chinese Academy of Sciences,Ningbo Zhejiang 315800)
出处
《环境污染与防治》
CAS
CSCD
北大核心
2018年第2期181-185,共5页
Environmental Pollution & Control
基金
中国科学院重点部署项目(No.KJZD-EW-TZ-G06-02)
国家自然科学基金委员会-福建省人民政府促进海峡两岸科技合作联合基金资助项目(No.U1405235)
关键词
PM2.5
后向轨迹
聚类分析
轨迹扇区分析
潜在源贡献函数
PM2.5
backward trajectory
cluster analysis
trajectory sector analysis
potential source contribution function
