Impact of Meteorological Conditions on PM<sub>2.5</sub> Pollution in China during Winter
Fine particulate matter (PM<sub>2.5</sub>) poses a risk to human health. In January 2017, the PM<sub>2.5</sub> pollution in China was severe, and the average PM<sub>2.5</sub> concentration had increased by 14.7% compared to that in January 2016. Meteorological con...
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doaj-117af58c4d2f4178ac9400718b9e34092020-11-24T21:47:44ZengMDPI AGAtmosphere2073-44332018-11-0191142910.3390/atmos9110429atmos9110429Impact of Meteorological Conditions on PM<sub>2.5</sub> Pollution in China during WinterYanling Xu0Wenbo Xue1Yu Lei2Yang Zhao3Shuiyuan Cheng4Zhenhai Ren5Qing Huang6Key Laboratory of Beijing on Regional Air Pollution Control, College of Environmental & Energy Engineering, Beijing University of Technology, Beijing 100124, ChinaCenter for Regional Air Quality Simulation and Control, Chinese Academy for Environmental Planning, Beijing 100012, ChinaCenter for Regional Air Quality Simulation and Control, Chinese Academy for Environmental Planning, Beijing 100012, ChinaState Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, ChinaKey Laboratory of Beijing on Regional Air Pollution Control, College of Environmental & Energy Engineering, Beijing University of Technology, Beijing 100124, ChinaKey Laboratory of Beijing on Regional Air Pollution Control, College of Environmental & Energy Engineering, Beijing University of Technology, Beijing 100124, ChinaSchool of Environment, Jinan University, Guangzhou 510632, ChinaFine particulate matter (PM<sub>2.5</sub>) poses a risk to human health. In January 2017, the PM<sub>2.5</sub> pollution in China was severe, and the average PM<sub>2.5</sub> concentration had increased by 14.7% compared to that in January 2016. Meteorological conditions greatly influence PM<sub>2.5</sub> pollution. The relationship between PM<sub>2.5</sub> and meteorological factors was assessed using monitoring data and the Community Multiscale Air Quality modeling system (CMAQ) was used to quantitatively evaluate the impacts of variations of meteorological conditions on PM<sub>2.5</sub> pollution. The results indicate that variations of meteorological conditions between January 2017 and January 2016 caused an increase of 13.6% in the national mean concentration of PM<sub>2.5</sub>. Unlike the Yangtze River Delta (YRD), where meteorological conditions were favorable, unfavorable meteorological conditions (such as low wind speed, high humidity, low boundary layer height and low rainfall) contributed to PM<sub>2.5</sub> concentration worsening by 29.7%, 42.6% and 7.9% in the Beijing-Tianjin-Hebei (JJJ) region, the Pearl River Delta (PRD) region and the Chengdu-Chongqing (CYB) region, respectively. Given the significant influence of local meteorology on PM<sub>2.5</sub> concentration, more emphasis should be placed on employing meteorological means to improve local air quality.https://www.mdpi.com/2073-4433/9/11/429meteorologyCMAQ modelPM<sub>2.5</sub>impact |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yanling Xu Wenbo Xue Yu Lei Yang Zhao Shuiyuan Cheng Zhenhai Ren Qing Huang |
spellingShingle |
Yanling Xu Wenbo Xue Yu Lei Yang Zhao Shuiyuan Cheng Zhenhai Ren Qing Huang Impact of Meteorological Conditions on PM<sub>2.5</sub> Pollution in China during Winter Atmosphere meteorology CMAQ model PM<sub>2.5</sub> impact |
author_facet |
Yanling Xu Wenbo Xue Yu Lei Yang Zhao Shuiyuan Cheng Zhenhai Ren Qing Huang |
author_sort |
Yanling Xu |
title |
Impact of Meteorological Conditions on PM<sub>2.5</sub> Pollution in China during Winter |
title_short |
Impact of Meteorological Conditions on PM<sub>2.5</sub> Pollution in China during Winter |
title_full |
Impact of Meteorological Conditions on PM<sub>2.5</sub> Pollution in China during Winter |
title_fullStr |
Impact of Meteorological Conditions on PM<sub>2.5</sub> Pollution in China during Winter |
title_full_unstemmed |
Impact of Meteorological Conditions on PM<sub>2.5</sub> Pollution in China during Winter |
title_sort |
impact of meteorological conditions on pm<sub>2.5</sub> pollution in china during winter |
publisher |
MDPI AG |
series |
Atmosphere |
issn |
2073-4433 |
publishDate |
2018-11-01 |
description |
Fine particulate matter (PM<sub>2.5</sub>) poses a risk to human health. In January 2017, the PM<sub>2.5</sub> pollution in China was severe, and the average PM<sub>2.5</sub> concentration had increased by 14.7% compared to that in January 2016. Meteorological conditions greatly influence PM<sub>2.5</sub> pollution. The relationship between PM<sub>2.5</sub> and meteorological factors was assessed using monitoring data and the Community Multiscale Air Quality modeling system (CMAQ) was used to quantitatively evaluate the impacts of variations of meteorological conditions on PM<sub>2.5</sub> pollution. The results indicate that variations of meteorological conditions between January 2017 and January 2016 caused an increase of 13.6% in the national mean concentration of PM<sub>2.5</sub>. Unlike the Yangtze River Delta (YRD), where meteorological conditions were favorable, unfavorable meteorological conditions (such as low wind speed, high humidity, low boundary layer height and low rainfall) contributed to PM<sub>2.5</sub> concentration worsening by 29.7%, 42.6% and 7.9% in the Beijing-Tianjin-Hebei (JJJ) region, the Pearl River Delta (PRD) region and the Chengdu-Chongqing (CYB) region, respectively. Given the significant influence of local meteorology on PM<sub>2.5</sub> concentration, more emphasis should be placed on employing meteorological means to improve local air quality. |
topic |
meteorology CMAQ model PM<sub>2.5</sub> impact |
url |
https://www.mdpi.com/2073-4433/9/11/429 |
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