Intraseasonal variation and future projection of atmospheric diffusion conditions conducive to extreme haze formation over eastern China
Future projection of diffusion conditions associated with extreme haze events over eastern China is of great importance to government emission regulations and public human health. Here, the diffusion conditions and their changes under future warming scenarios are examined. The relative strength of h...
Published in: | Atmospheric and Oceanic Science Letters |
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KeAi Communications Co., Ltd.
2020
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ftdoajarticles:oai:doaj.org/article:6e299e66c43f4a068d7a176868d3f7f5 2023-05-15T16:59:53+02:00 Intraseasonal variation and future projection of atmospheric diffusion conditions conducive to extreme haze formation over eastern China Weiyang FENG Minghuai WANG Yang ZHANG Xianglin DAI Xiaohong LIU Yangyang XU 2020-07-01T00:00:00Z https://doi.org/10.1080/16742834.2020.1745054 https://doaj.org/article/6e299e66c43f4a068d7a176868d3f7f5 EN eng KeAi Communications Co., Ltd. http://dx.doi.org/10.1080/16742834.2020.1745054 https://doaj.org/toc/1674-2834 https://doaj.org/toc/2376-6123 1674-2834 2376-6123 doi:10.1080/16742834.2020.1745054 https://doaj.org/article/6e299e66c43f4a068d7a176868d3f7f5 Atmospheric and Oceanic Science Letters, Vol 13, Iss 4, Pp 346-355 (2020) haze diffusion conditions east asian winter monsoon anticyclone anomaly rcp8.5 aerosol reduction greenhouse gases Environmental sciences GE1-350 Oceanography GC1-1581 article 2020 ftdoajarticles https://doi.org/10.1080/16742834.2020.1745054 2022-12-31T05:41:17Z Future projection of diffusion conditions associated with extreme haze events over eastern China is of great importance to government emission regulations and public human health. Here, the diffusion conditions and their changes under future warming scenarios are examined. The relative strength of haze events in the Northern China Plain region increase from 150% during 2006–15 to 190% during 2090–99 under RCP8.5 scenarios, induced by a stronger and longer-lasting anticyclone anomaly in eastern China. The strengthened anticyclone anomaly is mainly induced by increased northern wave train convergence emanating from the Barents–Kara Sea, and the longer duration of the anticyclone anomaly is mainly induced by stronger local feedback that can extract more energy from the basic state to maintain the anticyclone anomaly in eastern China. Aerosol reduction is found to play a dominant role in strengthening the upstream wave train near the Barents–Kara Sea and the downstream anticyclone in eastern China, while the effects from increased greenhouse gases are small. The results of this study indicate that future aerosol emissions reduction can induce deteriorating diffusion conditions, suggesting more stringent regulations on aerosol emissions in China are needed to meet air quality standards. Article in Journal/Newspaper Kara Sea Directory of Open Access Journals: DOAJ Articles Kara Sea Atmospheric and Oceanic Science Letters 13 4 346 355 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
haze diffusion conditions east asian winter monsoon anticyclone anomaly rcp8.5 aerosol reduction greenhouse gases Environmental sciences GE1-350 Oceanography GC1-1581 |
spellingShingle |
haze diffusion conditions east asian winter monsoon anticyclone anomaly rcp8.5 aerosol reduction greenhouse gases Environmental sciences GE1-350 Oceanography GC1-1581 Weiyang FENG Minghuai WANG Yang ZHANG Xianglin DAI Xiaohong LIU Yangyang XU Intraseasonal variation and future projection of atmospheric diffusion conditions conducive to extreme haze formation over eastern China |
topic_facet |
haze diffusion conditions east asian winter monsoon anticyclone anomaly rcp8.5 aerosol reduction greenhouse gases Environmental sciences GE1-350 Oceanography GC1-1581 |
description |
Future projection of diffusion conditions associated with extreme haze events over eastern China is of great importance to government emission regulations and public human health. Here, the diffusion conditions and their changes under future warming scenarios are examined. The relative strength of haze events in the Northern China Plain region increase from 150% during 2006–15 to 190% during 2090–99 under RCP8.5 scenarios, induced by a stronger and longer-lasting anticyclone anomaly in eastern China. The strengthened anticyclone anomaly is mainly induced by increased northern wave train convergence emanating from the Barents–Kara Sea, and the longer duration of the anticyclone anomaly is mainly induced by stronger local feedback that can extract more energy from the basic state to maintain the anticyclone anomaly in eastern China. Aerosol reduction is found to play a dominant role in strengthening the upstream wave train near the Barents–Kara Sea and the downstream anticyclone in eastern China, while the effects from increased greenhouse gases are small. The results of this study indicate that future aerosol emissions reduction can induce deteriorating diffusion conditions, suggesting more stringent regulations on aerosol emissions in China are needed to meet air quality standards. |
format |
Article in Journal/Newspaper |
author |
Weiyang FENG Minghuai WANG Yang ZHANG Xianglin DAI Xiaohong LIU Yangyang XU |
author_facet |
Weiyang FENG Minghuai WANG Yang ZHANG Xianglin DAI Xiaohong LIU Yangyang XU |
author_sort |
Weiyang FENG |
title |
Intraseasonal variation and future projection of atmospheric diffusion conditions conducive to extreme haze formation over eastern China |
title_short |
Intraseasonal variation and future projection of atmospheric diffusion conditions conducive to extreme haze formation over eastern China |
title_full |
Intraseasonal variation and future projection of atmospheric diffusion conditions conducive to extreme haze formation over eastern China |
title_fullStr |
Intraseasonal variation and future projection of atmospheric diffusion conditions conducive to extreme haze formation over eastern China |
title_full_unstemmed |
Intraseasonal variation and future projection of atmospheric diffusion conditions conducive to extreme haze formation over eastern China |
title_sort |
intraseasonal variation and future projection of atmospheric diffusion conditions conducive to extreme haze formation over eastern china |
publisher |
KeAi Communications Co., Ltd. |
publishDate |
2020 |
url |
https://doi.org/10.1080/16742834.2020.1745054 https://doaj.org/article/6e299e66c43f4a068d7a176868d3f7f5 |
geographic |
Kara Sea |
geographic_facet |
Kara Sea |
genre |
Kara Sea |
genre_facet |
Kara Sea |
op_source |
Atmospheric and Oceanic Science Letters, Vol 13, Iss 4, Pp 346-355 (2020) |
op_relation |
http://dx.doi.org/10.1080/16742834.2020.1745054 https://doaj.org/toc/1674-2834 https://doaj.org/toc/2376-6123 1674-2834 2376-6123 doi:10.1080/16742834.2020.1745054 https://doaj.org/article/6e299e66c43f4a068d7a176868d3f7f5 |
op_doi |
https://doi.org/10.1080/16742834.2020.1745054 |
container_title |
Atmospheric and Oceanic Science Letters |
container_volume |
13 |
container_issue |
4 |
container_start_page |
346 |
op_container_end_page |
355 |
_version_ |
1766052451068149760 |