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    Rights statement: This is the author’s version of a work that was accepted for publication in Atmospheric Environment. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Atmospheric Environment, 192, 2018 DOI: 10.1016/j.atmosenv.2018.08.060

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Analyses of winter circulation types and their impacts on haze pollution in Beijing

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Analyses of winter circulation types and their impacts on haze pollution in Beijing. / He, Jianjun; Gong, Sunling; Zhou, Chunhong et al.
In: Atmospheric Environment, Vol. 192, 11.2018, p. 94-103.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

He, J, Gong, S, Zhou, C, Lu, S, Wu, L, Chen, Y, Yu, Y, Zhao, S, Yu, L & Yin, C 2018, 'Analyses of winter circulation types and their impacts on haze pollution in Beijing', Atmospheric Environment, vol. 192, pp. 94-103. https://doi.org/10.1016/j.atmosenv.2018.08.060

APA

He, J., Gong, S., Zhou, C., Lu, S., Wu, L., Chen, Y., Yu, Y., Zhao, S., Yu, L., & Yin, C. (2018). Analyses of winter circulation types and their impacts on haze pollution in Beijing. Atmospheric Environment, 192, 94-103. https://doi.org/10.1016/j.atmosenv.2018.08.060

Vancouver

He J, Gong S, Zhou C, Lu S, Wu L, Chen Y et al. Analyses of winter circulation types and their impacts on haze pollution in Beijing. Atmospheric Environment. 2018 Nov;192:94-103. Epub 2018 Aug 30. doi: 10.1016/j.atmosenv.2018.08.060

Author

He, Jianjun ; Gong, Sunling ; Zhou, Chunhong et al. / Analyses of winter circulation types and their impacts on haze pollution in Beijing. In: Atmospheric Environment. 2018 ; Vol. 192. pp. 94-103.

Bibtex

@article{bef8089a181840eaaace6d22922504f5,
title = "Analyses of winter circulation types and their impacts on haze pollution in Beijing",
abstract = "To better understand the interannual variation of winter haze pollution, this paper investigates winter circulation types and their impacts on local meteorological conditions and haze pollution during 38 winters from 1980 to 2017 in Beijing. Circulation types were classified by T-mode principal component analysis combined with the K-means cluster method using European Centre for Medium-range Weather Forecasts ERA-interim sea level pressure data. The results can significantly distinguish the cold air process, a degeneration of cold air, and stagnant weather. The cold air process over Beijing was accompanied by a low temperature, high relative humidity, large pressure gradient and near-surface wind speed, and deep mixing layer. The cold air process facilitated pollutant dispersion and transport to the outside (such as East China, Bohai Sea, and Yellow Sea) and formed low PM2.5 concentrations and low frequencies of haze days. In contrast, the local meteorology and haze pollution were almost the inverse for stagnant weather. The local meteorological conditions and haze pollution for the degeneration of cold air are between the previous circulation types. Considering PM2.5 observation during 2010–2017, the occurrence frequency of cold air was low in the recent winters of 2013, 2014 and 2017, and resulted in severe PM2.5 pollution. High frequency of stagnant weather (48.4%) was one of the reasons that haze pollution reached 37% during 38 winters from 1980 to 2017 over Beijing. The time series of haze frequency was negatively correlated with that of cold air frequency. Winter haze pollution was affected by climate change over Beijing. During 38 winters from 1980 to 2017, a decreased trend of haze days was found, which was partly related to an increased trend of cold air frequency. However, the trends of haze days and cold air in Beijing were not significant based on regression analysis.",
keywords = "Circulation types, Local meteorology, Haze pollution, PM",
author = "Jianjun He and Sunling Gong and Chunhong Zhou and Shuhua Lu and Lin Wu and Ying Chen and Ye Yu and Suping Zhao and Lijuan Yu and Chengmei Yin",
note = "This is the author{\textquoteright}s version of a work that was accepted for publication in Atmospheric Environment. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Atmospheric Environment, 192, 2018 DOI: 10.1016/j.atmosenv.2018.08.060",
year = "2018",
month = nov,
doi = "10.1016/j.atmosenv.2018.08.060",
language = "English",
volume = "192",
pages = "94--103",
journal = "Atmospheric Environment",
issn = "1352-2310",
publisher = "PERGAMON-ELSEVIER SCIENCE LTD",

}

RIS

TY - JOUR

T1 - Analyses of winter circulation types and their impacts on haze pollution in Beijing

AU - He, Jianjun

AU - Gong, Sunling

AU - Zhou, Chunhong

AU - Lu, Shuhua

AU - Wu, Lin

AU - Chen, Ying

AU - Yu, Ye

AU - Zhao, Suping

AU - Yu, Lijuan

AU - Yin, Chengmei

N1 - This is the author’s version of a work that was accepted for publication in Atmospheric Environment. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Atmospheric Environment, 192, 2018 DOI: 10.1016/j.atmosenv.2018.08.060

PY - 2018/11

Y1 - 2018/11

N2 - To better understand the interannual variation of winter haze pollution, this paper investigates winter circulation types and their impacts on local meteorological conditions and haze pollution during 38 winters from 1980 to 2017 in Beijing. Circulation types were classified by T-mode principal component analysis combined with the K-means cluster method using European Centre for Medium-range Weather Forecasts ERA-interim sea level pressure data. The results can significantly distinguish the cold air process, a degeneration of cold air, and stagnant weather. The cold air process over Beijing was accompanied by a low temperature, high relative humidity, large pressure gradient and near-surface wind speed, and deep mixing layer. The cold air process facilitated pollutant dispersion and transport to the outside (such as East China, Bohai Sea, and Yellow Sea) and formed low PM2.5 concentrations and low frequencies of haze days. In contrast, the local meteorology and haze pollution were almost the inverse for stagnant weather. The local meteorological conditions and haze pollution for the degeneration of cold air are between the previous circulation types. Considering PM2.5 observation during 2010–2017, the occurrence frequency of cold air was low in the recent winters of 2013, 2014 and 2017, and resulted in severe PM2.5 pollution. High frequency of stagnant weather (48.4%) was one of the reasons that haze pollution reached 37% during 38 winters from 1980 to 2017 over Beijing. The time series of haze frequency was negatively correlated with that of cold air frequency. Winter haze pollution was affected by climate change over Beijing. During 38 winters from 1980 to 2017, a decreased trend of haze days was found, which was partly related to an increased trend of cold air frequency. However, the trends of haze days and cold air in Beijing were not significant based on regression analysis.

AB - To better understand the interannual variation of winter haze pollution, this paper investigates winter circulation types and their impacts on local meteorological conditions and haze pollution during 38 winters from 1980 to 2017 in Beijing. Circulation types were classified by T-mode principal component analysis combined with the K-means cluster method using European Centre for Medium-range Weather Forecasts ERA-interim sea level pressure data. The results can significantly distinguish the cold air process, a degeneration of cold air, and stagnant weather. The cold air process over Beijing was accompanied by a low temperature, high relative humidity, large pressure gradient and near-surface wind speed, and deep mixing layer. The cold air process facilitated pollutant dispersion and transport to the outside (such as East China, Bohai Sea, and Yellow Sea) and formed low PM2.5 concentrations and low frequencies of haze days. In contrast, the local meteorology and haze pollution were almost the inverse for stagnant weather. The local meteorological conditions and haze pollution for the degeneration of cold air are between the previous circulation types. Considering PM2.5 observation during 2010–2017, the occurrence frequency of cold air was low in the recent winters of 2013, 2014 and 2017, and resulted in severe PM2.5 pollution. High frequency of stagnant weather (48.4%) was one of the reasons that haze pollution reached 37% during 38 winters from 1980 to 2017 over Beijing. The time series of haze frequency was negatively correlated with that of cold air frequency. Winter haze pollution was affected by climate change over Beijing. During 38 winters from 1980 to 2017, a decreased trend of haze days was found, which was partly related to an increased trend of cold air frequency. However, the trends of haze days and cold air in Beijing were not significant based on regression analysis.

KW - Circulation types

KW - Local meteorology

KW - Haze pollution

KW - PM

U2 - 10.1016/j.atmosenv.2018.08.060

DO - 10.1016/j.atmosenv.2018.08.060

M3 - Journal article

VL - 192

SP - 94

EP - 103

JO - Atmospheric Environment

JF - Atmospheric Environment

SN - 1352-2310

ER -