The Effect of Particulate Matter on Visibility in Hangzhou, China

被引：0
|
作者：
Wu, Jian [1 ,2 ]
Cheng, Wen [1 ]
Lu, Huijian [3 ]
Shi, Yao [3 ]
He, Yi [3 ]
机构：
[1] Xian Univ Technol, Xian, Shaanxi, Peoples R China
[2] Environm Sci Res & Design Inst Zhejiang Prov, Hangzhou, Zhejiang, Peoples R China
[3] Zhejiang Univ, Coll Chem & Biol Engn, Key Lab Biomass Chem Engn, Minist Educ, Hangzhou, Zhejiang, Peoples R China
来源：
JOURNAL OF ENVIRONMENTAL SCIENCE AND MANAGEMENT | 2018年 / 21卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Visibility; Particulate Matter; Humidity; CHEMICAL-COMPOSITIONS; PM2.5; HAZE; IDENTIFICATION; GUANGZHOU; MEGACITY; EPISODES; IMPACT; WINTER; PM10;
D O I：
暂无
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Hangzhou, a humid subtropical city of China, was studied to investigate the effect of particulate matters (PMs) and its fractions (e.g., PM2.5 and PM2.5 similar to 10)and levels of relative humidity (10 to > 90%) on atmospheric visibility. It was found that finer fractions of PM have greater negative effect on visibility. This inverse relationship was pronounced during winter season, having the highest PM2.5 concentrations and the lowest visual range. Summer season exhibited the highest visual range and least PM2.5 fractions, along with autumn. Furthermore, lower relative humidity coincides with higher visual range regardless of the PM fractions. As the levels of relative humidity went up (> 90%), lower values of visual range were measured. The results from this study suggest that lower target levels of PM2.5 is needed for Hangzhou in order to prevent episodes of poor visibility.
引用
收藏
页码：100 / 109
页数：10
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