Seesaw haze pollution in North China modulated by the sub-seasonal variability of atmospheric circulation
Utilizing a recent observational dataset of particulate matter with diameters less than 2.5 µm (PM2.5) in North China, this study reveals a distinct seesaw feature of abnormally high and low PM2.5 concentrations in the adjacent two months of December 2015 and January 2016, accompanied by distinct me...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00041259 2023-05-15T15:13:43+02:00 Seesaw haze pollution in North China modulated by the sub-seasonal variability of atmospheric circulation Zhang, Ge Gao, Yang Cai, Wenju Leung, L. Ruby Wang, Shuxiao Zhao, Bin Wang, Minghuai Shan, Huayao Yao, Xiaohong Gao, Huiwang 2019-01 electronic https://doi.org/10.5194/acp-19-565-2019 https://noa.gwlb.de/receive/cop_mods_00041259 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00040879/acp-19-565-2019.pdf https://acp.copernicus.org/articles/19/565/2019/acp-19-565-2019.pdf eng eng Copernicus Publications Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-19-565-2019 https://noa.gwlb.de/receive/cop_mods_00041259 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00040879/acp-19-565-2019.pdf https://acp.copernicus.org/articles/19/565/2019/acp-19-565-2019.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2019 ftnonlinearchiv https://doi.org/10.5194/acp-19-565-2019 2022-02-08T22:41:43Z Utilizing a recent observational dataset of particulate matter with diameters less than 2.5 µm (PM2.5) in North China, this study reveals a distinct seesaw feature of abnormally high and low PM2.5 concentrations in the adjacent two months of December 2015 and January 2016, accompanied by distinct meteorological modulations. The seesaw pattern is postulated to be linked to a super El Niño and the Arctic Oscillation (AO). During the mature phase of El Niño in December 2015, the weakened East Asian winter monsoon (EAWM) and the associated low-level southerly wind anomaly reduced planetary boundary layer (PBL) height, favoring strong haze formation. This circulation pattern was completely reversed in the following month, in part due to a sudden phase change of the AO from positive to negative and the beginning of a decay of the El Niño, which enhanced the southward shift of the upper tropospheric jet from December to January relative to climatology, leading to an enhanced EAWM and substantially lower haze formation. This sub-seasonal change in circulation is also robustly found in 1982–1983 and 1997–1998, implicative of a general physical mechanism dynamically linked to El Niño and the AO. Numerical experiments using the Weather Research and Forecasting (WRF) Community Multiscale Air Quality (CMAQ) model were used to test the modulation of the meteorological conditions on haze formation. With the same emission, simulations for three super El Niño periods (1983, 1997 and 2015) robustly show higher PM2.5 concentrations under the mature phase of the super El Niño, but substantially lower PM2.5 concentrations during the decay phase of El Niño (and the sudden AO phase change), further verifying the modulation effect of the sub-seasonal circulation anomaly on PM2.5 concentrations in North China. Article in Journal/Newspaper Arctic Niedersächsisches Online-Archiv NOA Arctic Atmospheric Chemistry and Physics 19 1 565 576 |
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article Verlagsveröffentlichung Zhang, Ge Gao, Yang Cai, Wenju Leung, L. Ruby Wang, Shuxiao Zhao, Bin Wang, Minghuai Shan, Huayao Yao, Xiaohong Gao, Huiwang Seesaw haze pollution in North China modulated by the sub-seasonal variability of atmospheric circulation |
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article Verlagsveröffentlichung |
description |
Utilizing a recent observational dataset of particulate matter with diameters less than 2.5 µm (PM2.5) in North China, this study reveals a distinct seesaw feature of abnormally high and low PM2.5 concentrations in the adjacent two months of December 2015 and January 2016, accompanied by distinct meteorological modulations. The seesaw pattern is postulated to be linked to a super El Niño and the Arctic Oscillation (AO). During the mature phase of El Niño in December 2015, the weakened East Asian winter monsoon (EAWM) and the associated low-level southerly wind anomaly reduced planetary boundary layer (PBL) height, favoring strong haze formation. This circulation pattern was completely reversed in the following month, in part due to a sudden phase change of the AO from positive to negative and the beginning of a decay of the El Niño, which enhanced the southward shift of the upper tropospheric jet from December to January relative to climatology, leading to an enhanced EAWM and substantially lower haze formation. This sub-seasonal change in circulation is also robustly found in 1982–1983 and 1997–1998, implicative of a general physical mechanism dynamically linked to El Niño and the AO. Numerical experiments using the Weather Research and Forecasting (WRF) Community Multiscale Air Quality (CMAQ) model were used to test the modulation of the meteorological conditions on haze formation. With the same emission, simulations for three super El Niño periods (1983, 1997 and 2015) robustly show higher PM2.5 concentrations under the mature phase of the super El Niño, but substantially lower PM2.5 concentrations during the decay phase of El Niño (and the sudden AO phase change), further verifying the modulation effect of the sub-seasonal circulation anomaly on PM2.5 concentrations in North China. |
format |
Article in Journal/Newspaper |
author |
Zhang, Ge Gao, Yang Cai, Wenju Leung, L. Ruby Wang, Shuxiao Zhao, Bin Wang, Minghuai Shan, Huayao Yao, Xiaohong Gao, Huiwang |
author_facet |
Zhang, Ge Gao, Yang Cai, Wenju Leung, L. Ruby Wang, Shuxiao Zhao, Bin Wang, Minghuai Shan, Huayao Yao, Xiaohong Gao, Huiwang |
author_sort |
Zhang, Ge |
title |
Seesaw haze pollution in North China modulated by the sub-seasonal variability of atmospheric circulation |
title_short |
Seesaw haze pollution in North China modulated by the sub-seasonal variability of atmospheric circulation |
title_full |
Seesaw haze pollution in North China modulated by the sub-seasonal variability of atmospheric circulation |
title_fullStr |
Seesaw haze pollution in North China modulated by the sub-seasonal variability of atmospheric circulation |
title_full_unstemmed |
Seesaw haze pollution in North China modulated by the sub-seasonal variability of atmospheric circulation |
title_sort |
seesaw haze pollution in north china modulated by the sub-seasonal variability of atmospheric circulation |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/acp-19-565-2019 https://noa.gwlb.de/receive/cop_mods_00041259 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00040879/acp-19-565-2019.pdf https://acp.copernicus.org/articles/19/565/2019/acp-19-565-2019.pdf |
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Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
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Arctic |
op_relation |
Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-19-565-2019 https://noa.gwlb.de/receive/cop_mods_00041259 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00040879/acp-19-565-2019.pdf https://acp.copernicus.org/articles/19/565/2019/acp-19-565-2019.pdf |
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https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/acp-19-565-2019 |
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Atmospheric Chemistry and Physics |
container_volume |
19 |
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1 |
container_start_page |
565 |
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576 |
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