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 PM 2.5 observation data, meteorological observation data, Aerosol Robotic Network (AERONET)...
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ftdoajarticles:oai:doaj.org/article:bb7447e24eb845e3b4f4b6cda1c88a6f 2023-05-15T13:06:44+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 2020-03-01T00:00:00Z https://doi.org/10.3390/atmos11030288 https://doaj.org/article/bb7447e24eb845e3b4f4b6cda1c88a6f EN eng MDPI AG https://www.mdpi.com/2073-4433/11/3/288 https://doaj.org/toc/2073-4433 2073-4433 doi:10.3390/atmos11030288 https://doaj.org/article/bb7447e24eb845e3b4f4b6cda1c88a6f Atmosphere, Vol 11, Iss 3, p 288 (2020) circulation patterns objective circulation classification air pollution meteorological condition aerosol optical and radiation characteristics Meteorology. Climatology QC851-999 article 2020 ftdoajarticles https://doi.org/10.3390/atmos11030288 2022-12-31T11:32:39Z 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 PM 2.5 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 PM 2.5 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 PM 2.5 concentration. The study also found that the annual average total radiation was negatively correlated with the annual average PM 2.5 concentration. In future, we plan to identify which methods and data are suitable for circulation classification in the PRD region. Article in Journal/Newspaper Aerosol Robotic Network Directory of Open Access Journals: DOAJ Articles Atmosphere 11 3 288 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
circulation patterns objective circulation classification air pollution meteorological condition aerosol optical and radiation characteristics Meteorology. Climatology QC851-999 |
spellingShingle |
circulation patterns objective circulation classification air pollution meteorological condition aerosol optical and radiation characteristics Meteorology. Climatology QC851-999 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 Meteorology. Climatology QC851-999 |
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 PM 2.5 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 PM 2.5 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 PM 2.5 concentration. The study also found that the annual average total radiation was negatively correlated with the annual average PM 2.5 concentration. In future, we plan to identify which methods and data are suitable for circulation classification in the PRD region. |
format |
Article in Journal/Newspaper |
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 |
MDPI AG |
publishDate |
2020 |
url |
https://doi.org/10.3390/atmos11030288 https://doaj.org/article/bb7447e24eb845e3b4f4b6cda1c88a6f |
genre |
Aerosol Robotic Network |
genre_facet |
Aerosol Robotic Network |
op_source |
Atmosphere, Vol 11, Iss 3, p 288 (2020) |
op_relation |
https://www.mdpi.com/2073-4433/11/3/288 https://doaj.org/toc/2073-4433 2073-4433 doi:10.3390/atmos11030288 https://doaj.org/article/bb7447e24eb845e3b4f4b6cda1c88a6f |
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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1766018744553832448 |