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dc.contributor.author
Liu, Song
dc.contributor.author
Xing, Jia
dc.contributor.author
Sahu, Shovan Kumar
dc.contributor.author
Liu, Xiliang
dc.contributor.author
Liu, Shuchang
dc.contributor.author
Jiang, Yueqi
dc.contributor.author
Zhang, Hongliang
dc.contributor.author
Li, Siwei
dc.contributor.author
Ding, Dian
dc.contributor.author
Chang, Xing
dc.contributor.author
Wang, Shuxiao
dc.date.accessioned
2021-11-15T17:44:36Z
dc.date.available
2021-11-15T03:53:22Z
dc.date.available
2021-11-15T17:44:36Z
dc.date.issued
2021-11
dc.identifier.issn
1748-9326
dc.identifier.issn
1748-9318
dc.identifier.other
10.1088/1748-9326/ac31ec
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/515096
dc.identifier.doi
10.3929/ethz-b-000515096
dc.description.abstract
Northern China experienced two intense dust storms in March 2021, leading to reduced visibility and excessive particulate pollution. Understanding the cause of such extreme phenomena is important for further prevention. This study successfully reproduced the extreme dust storms using the Community Multiscale Air Quality model with refined bulk density of different soil types and improved spatial resolution. The wind-blown PM2.5 and PM10 are estimated to be around 15 and 120 mu g m(-3) in dust source areas (equal 9.6% and 31.0% in average of China), resulting in 1.1 and 2.0 times increases in PM2.5 and PM10 concentrations in populated regions of the Middle Yellow River Basin and the Beijing-Tianjin-Hebei area. The critical threshold friction velocity is the key parameter to judge whether wind-blown dust occurs. Dust flux is sensitive to the bulk soil density (increased by 4.2% and 12.6% for PM2.5 and PM10 after refined soil bulk density) and resolution (increased by 13.5% and 3.5% for PM2.5 and PM10 from 27 km to 9 km). Such results demonstrated the strong correlation between wind speed, frequency, and intensity of dust phenomena from 2013 to 2021. The wind speed can be further enhanced in dust source areas even in the context of a decline in the national average, leading to more frequent and persistent dust storms in March 2050. Only relying on coordinated emission reductions to mitigate climate change, wind-blown dust in northern China still poses considerable potential risks to air quality. Urgent actions should also be taken to improve land-use and land-cover to reduce the area of dust sources.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
IOP Publishing
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
dust
en_US
dc.subject
CMAQ
en_US
dc.subject
wind speed
en_US
dc.subject
climate change
en_US
dc.subject
particulate matter
en_US
dc.title
Wind-blown dust and its impacts on particulate matter pollution in Northern China: current and future scenarios
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2021-11-08
ethz.journal.title
Environmental Research Letters
ethz.journal.volume
16
en_US
ethz.journal.issue
11
en_US
ethz.journal.abbreviated
Environ. Res. Lett.
ethz.pages.start
114041
en_US
ethz.size
12 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Bristol
ethz.publication.status
published
en_US
ethz.date.deposited
2021-11-15T03:54:40Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2021-11-15T17:44:42Z
ethz.rosetta.lastUpdated
2024-02-02T15:23:48Z
ethz.rosetta.versionExported
true
ethz.COinS
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