期刊论文

ANALYSIS OF CHARACTERISTICS AND POTENTIAL SOURCES OF PM_(2.5) EXTERNAL TRANSPORTATION IN HENGYANG IN WINTER

中文

环境工程

1000-8942

2019

37

7

142-147

10.13205/j.hjgc.201907026

17A180:湖南省教育厅科学研究重点项目 CX2017B541:湖南省研究生科研创新项目

本校为第一机构

利用HYSPLIT模型的后向轨迹模式,结合GDAS气象数据、衡阳市PM_(2.5)质量浓度数据,分析了衡阳市2015— 2017年冬季外来气团后向轨迹分布特征,并运用后向轨迹模式中的聚类分析法、潜在源分析法(PSCF) 、浓度权重分析法(CWT),分析了衡阳市冬季PM_(2.5)外来输送通道及潜在源分布情况。结果表明:衡阳市冬季外来气团后向轨迹主要来自偏北方向,移动速度较慢,100 m高度的PM_(2.5)外来输送路径较集中,以近距离输送为主;500 m高度的输送路径较分散且更长,长距离输送的影响增大。聚类分析显示,来自东北方向的聚类轨迹出现频率最高,该类轨迹移动方向是PM_(2.5)外来输送的主要通道方向。潜在源分析显示,衡阳市...

Backward trajectory pattern of HYSPLIT model was used along with GDAS meteorological data and PM_(2.5) concentration data of Hengyang,to analyze the distribution characteristics of the backward trajectory of the external air mass in winter in Hengyang from 2015 to 2017.In addition,the distribution of PM_(2.5) external transport channels and potential sources in Hengyang were analyzed via cluster analysis method,PSCF method and CWT method.The results showed that the backward trajectory of the external air mass of winter in Hengyang mainly came from the northern direction,and its movement speed ...