Influence of Atmospheric Circulation on Aerosol and its Optical Characteristics in the Pearl River Delta Region
At present, few studies have focused on the impact of circulation patterns on aerosol pollution in the Pearl River delta region (PRD) region based on the objective circulation classification method. Based on PM2.5 observation data, meteorological observation data, Aerosol Robotic Network (AERONET) a...
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ftmdpi:oai:mdpi.com:/2073-4433/11/3/288/ 2023-08-20T03:59:12+02:00 Influence of Atmospheric Circulation on Aerosol and its Optical Characteristics in the Pearl River Delta Region Yilin Liu Jianjun He Xin Lai Chenwei Zhang Lei Zhang Sunling Gong Huizheng Che agris 2020-03-16 application/pdf https://doi.org/10.3390/atmos11030288 EN eng Multidisciplinary Digital Publishing Institute Air Quality https://dx.doi.org/10.3390/atmos11030288 https://creativecommons.org/licenses/by/4.0/ Atmosphere; Volume 11; Issue 3; Pages: 288 circulation patterns objective circulation classification air pollution meteorological condition aerosol optical and radiation characteristics Text 2020 ftmdpi https://doi.org/10.3390/atmos11030288 2023-07-31T23:14:38Z At present, few studies have focused on the impact of circulation patterns on aerosol pollution in the Pearl River delta region (PRD) region based on the objective circulation classification method. Based on PM2.5 observation data, meteorological observation data, Aerosol Robotic Network (AERONET) aerosol observation data and European Center for Medium-Range Weather Forecasting (ECMWF) ERA (European Reanalysis)-Interim data in the PRD during 2013 to 2017, the air pollution level, meteorological conditions, and aerosol optical and radiation characteristics in different circulation patterns are studied in this paper. Using ECMWF ERA-Interim sea level pressure, nine circulation patterns were determined based on the T-mode principal component analysis (PCA) combined with the k-means clustering method. There were significant differences in PM2.5 values under different circulation patterns, indicating that the change of atmospheric circulation is an important factor driving the change of air quality. The prevailing wind in winter (northerly wind) facilitates the transport of pollutants from the north of the PRD and forms severe air pollution, while the prevailing wind in summer (southerly wind) brings clean air from the South China Sea; additionally, a high frequency of precipitation benefits the wet scavenging of pollutants, resulting in improved air quality in the PRD region. The impact of circulation patterns on the AOD (aerosol optical depth) is basically similar to that of the PM2.5 concentration. The study also found that the annual average total radiation was negatively correlated with the annual average PM2.5 concentration. In future, we plan to identify which methods and data are suitable for circulation classification in the PRD region. Text Aerosol Robotic Network MDPI Open Access Publishing Atmosphere 11 3 288 |
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Open Polar |
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MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
circulation patterns objective circulation classification air pollution meteorological condition aerosol optical and radiation characteristics |
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circulation patterns objective circulation classification air pollution meteorological condition aerosol optical and radiation characteristics Yilin Liu Jianjun He Xin Lai Chenwei Zhang Lei Zhang Sunling Gong Huizheng Che Influence of Atmospheric Circulation on Aerosol and its Optical Characteristics in the Pearl River Delta Region |
topic_facet |
circulation patterns objective circulation classification air pollution meteorological condition aerosol optical and radiation characteristics |
description |
At present, few studies have focused on the impact of circulation patterns on aerosol pollution in the Pearl River delta region (PRD) region based on the objective circulation classification method. Based on PM2.5 observation data, meteorological observation data, Aerosol Robotic Network (AERONET) aerosol observation data and European Center for Medium-Range Weather Forecasting (ECMWF) ERA (European Reanalysis)-Interim data in the PRD during 2013 to 2017, the air pollution level, meteorological conditions, and aerosol optical and radiation characteristics in different circulation patterns are studied in this paper. Using ECMWF ERA-Interim sea level pressure, nine circulation patterns were determined based on the T-mode principal component analysis (PCA) combined with the k-means clustering method. There were significant differences in PM2.5 values under different circulation patterns, indicating that the change of atmospheric circulation is an important factor driving the change of air quality. The prevailing wind in winter (northerly wind) facilitates the transport of pollutants from the north of the PRD and forms severe air pollution, while the prevailing wind in summer (southerly wind) brings clean air from the South China Sea; additionally, a high frequency of precipitation benefits the wet scavenging of pollutants, resulting in improved air quality in the PRD region. The impact of circulation patterns on the AOD (aerosol optical depth) is basically similar to that of the PM2.5 concentration. The study also found that the annual average total radiation was negatively correlated with the annual average PM2.5 concentration. In future, we plan to identify which methods and data are suitable for circulation classification in the PRD region. |
format |
Text |
author |
Yilin Liu Jianjun He Xin Lai Chenwei Zhang Lei Zhang Sunling Gong Huizheng Che |
author_facet |
Yilin Liu Jianjun He Xin Lai Chenwei Zhang Lei Zhang Sunling Gong Huizheng Che |
author_sort |
Yilin Liu |
title |
Influence of Atmospheric Circulation on Aerosol and its Optical Characteristics in the Pearl River Delta Region |
title_short |
Influence of Atmospheric Circulation on Aerosol and its Optical Characteristics in the Pearl River Delta Region |
title_full |
Influence of Atmospheric Circulation on Aerosol and its Optical Characteristics in the Pearl River Delta Region |
title_fullStr |
Influence of Atmospheric Circulation on Aerosol and its Optical Characteristics in the Pearl River Delta Region |
title_full_unstemmed |
Influence of Atmospheric Circulation on Aerosol and its Optical Characteristics in the Pearl River Delta Region |
title_sort |
influence of atmospheric circulation on aerosol and its optical characteristics in the pearl river delta region |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2020 |
url |
https://doi.org/10.3390/atmos11030288 |
op_coverage |
agris |
genre |
Aerosol Robotic Network |
genre_facet |
Aerosol Robotic Network |
op_source |
Atmosphere; Volume 11; Issue 3; Pages: 288 |
op_relation |
Air Quality https://dx.doi.org/10.3390/atmos11030288 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/atmos11030288 |
container_title |
Atmosphere |
container_volume |
11 |
container_issue |
3 |
container_start_page |
288 |
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1774720330990878720 |