Long-range transport impacts on surface aerosol concentrations and the contributions to haze events in China: an HTAP2 multi-model study
<p>Haze has been severely affecting the densely populated areas in China recently. While many of the efforts have been devoted to investigating the impact of local anthropogenic emission, limited attention has been paid to the contribution from long-range transport. In this study, we apply...
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Format: | Article |
Language: | English |
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Copernicus Publications
2018-10-01
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Series: | Atmospheric Chemistry and Physics |
Online Access: | https://www.atmos-chem-phys.net/18/15581/2018/acp-18-15581-2018.pdf |
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record_format |
Article |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
X. Dong J. S. Fu Q. Zhu J. Sun J. Tan T. Keating T. Sekiya K. Sudo L. Emmons S. Tilmes J. E. Jonson M. Schulz H. Bian M. Chin Y. Davila D. Henze T. Takemura A. M. K. Benedictow K. Huang K. Huang |
spellingShingle |
X. Dong J. S. Fu Q. Zhu J. Sun J. Tan T. Keating T. Sekiya K. Sudo L. Emmons S. Tilmes J. E. Jonson M. Schulz H. Bian M. Chin Y. Davila D. Henze T. Takemura A. M. K. Benedictow K. Huang K. Huang Long-range transport impacts on surface aerosol concentrations and the contributions to haze events in China: an HTAP2 multi-model study Atmospheric Chemistry and Physics |
author_facet |
X. Dong J. S. Fu Q. Zhu J. Sun J. Tan T. Keating T. Sekiya K. Sudo L. Emmons S. Tilmes J. E. Jonson M. Schulz H. Bian M. Chin Y. Davila D. Henze T. Takemura A. M. K. Benedictow K. Huang K. Huang |
author_sort |
X. Dong |
title |
Long-range transport impacts on surface aerosol concentrations and the contributions to haze events in China: an HTAP2 multi-model study |
title_short |
Long-range transport impacts on surface aerosol concentrations and the contributions to haze events in China: an HTAP2 multi-model study |
title_full |
Long-range transport impacts on surface aerosol concentrations and the contributions to haze events in China: an HTAP2 multi-model study |
title_fullStr |
Long-range transport impacts on surface aerosol concentrations and the contributions to haze events in China: an HTAP2 multi-model study |
title_full_unstemmed |
Long-range transport impacts on surface aerosol concentrations and the contributions to haze events in China: an HTAP2 multi-model study |
title_sort |
long-range transport impacts on surface aerosol concentrations and the contributions to haze events in china: an htap2 multi-model study |
publisher |
Copernicus Publications |
series |
Atmospheric Chemistry and Physics |
issn |
1680-7316 1680-7324 |
publishDate |
2018-10-01 |
description |
<p>Haze has been severely affecting the densely populated areas in China
recently. While many of the efforts have been devoted to investigating the
impact of local anthropogenic emission, limited attention has been paid to
the contribution from long-range transport. In this study, we apply
simulations from six participating models supplied through the Task Force on
Hemispheric Transport of Air Pollution phase 2 (HTAP2) exercise to
investigate the long-range transport impact of Europe (EUR) and
Russia–Belarus–Ukraine (RBU) on the surface air quality in eastern Asia
(EAS), with special focus on their contributions during the haze episodes in
China. The impact of 20 % anthropogenic emission perturbation from the
source region is extrapolated by a factor of 5 to estimate the full impact.
We find that the full impacts from EUR and RBU are 0.99 µg m<sup>−3</sup>
(3.1 %) and 1.32 µg m<sup>−3</sup> (4.1 %) during haze episodes,
while the annual averaged full impacts are only 0.35 µg m<sup>−3</sup>
(1.7 %) and 0.53 µg m<sup>−3</sup> (2.6 %). By estimating the aerosol
response within and above the planetary boundary layer (PBL), we find that
long-range transport from EUR within the PBL contributes to 22–38 % of the
total column density of aerosol response in EAS. Comparison with the HTAP
phase 1 (HTAP1) assessment reveals that from 2000 to 2010, the long-range
transport from Europe to eastern Asia has decreased significantly by a factor
of 2–10 for surface aerosol mass concentration due to the simultaneous
emission reduction in source regions and emission increase in the receptor
region. We also find the long-range transport from the Europe and RBU regions
increases the number of haze events in China by 0.15 % and 0.11 %, and
the North China Plain and southeastern China has 1–3 extra haze days ( < 3 %). This study is the first investigation into the contribution of
long-range transport to haze in China with multi-model experiments.</p> |
url |
https://www.atmos-chem-phys.net/18/15581/2018/acp-18-15581-2018.pdf |
work_keys_str_mv |
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doaj-e2b19be2f3554edb8882b1dcd01318b92020-11-24T22:50:03ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242018-10-0118155811560010.5194/acp-18-15581-2018Long-range transport impacts on surface aerosol concentrations and the contributions to haze events in China: an HTAP2 multi-model studyX. Dong0J. S. Fu1Q. Zhu2J. Sun3J. Tan4T. Keating5T. Sekiya6K. Sudo7L. Emmons8S. Tilmes9J. E. Jonson10M. Schulz11H. Bian12M. Chin13Y. Davila14D. Henze15T. Takemura16A. M. K. Benedictow17K. Huang18K. Huang19Department of Civil and Environmental Engineering, The University of Tennessee, Knoxville, Tennessee, USADepartment of Civil and Environmental Engineering, The University of Tennessee, Knoxville, Tennessee, USADepartment of Civil and Environmental Engineering, The University of Tennessee, Knoxville, Tennessee, USADepartment of Civil and Environmental Engineering, The University of Tennessee, Knoxville, Tennessee, USADepartment of Civil and Environmental Engineering, The University of Tennessee, Knoxville, Tennessee, USAEnvironmental Protection Agency, Applied Science and Education Division, National Center for Environmental Research, Office of Research and Development, Headquarters, Federal Triangle, Washington, DC 20460, USANagoya University, Furo-cho, Chikusa-ku, Nagoya, JapanNagoya University, Furo-cho, Chikusa-ku, Nagoya, JapanAtmospheric Chemistry Observations and Modeling Laboratory, National Center for Atmospheric Research, Boulder, Colorado, USAAtmospheric Chemistry Observations and Modeling Laboratory, National Center for Atmospheric Research, Boulder, Colorado, USANorwegian Meteorological Institute, Oslo, NorwayNorwegian Meteorological Institute, Oslo, NorwayGoddard Earth Sciences and Technology Center, University of Maryland, Baltimore, MD, USAEarth Sciences Division, NASA Goddard Space Flight Center, Greenbelt, MD, USADepartment of Mechanical Engineering, University of Colorado, Boulder, CO, USADepartment of Mechanical Engineering, University of Colorado, Boulder, CO, USAResearch Institute for Applied Mechanics, Kyushu University, Fukuoka, JapanNorwegian Meteorological Institute, Oslo, NorwayDepartment of Civil and Environmental Engineering, The University of Tennessee, Knoxville, Tennessee, USACenter for Atmospheric Chemistry Study, Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China <p>Haze has been severely affecting the densely populated areas in China recently. While many of the efforts have been devoted to investigating the impact of local anthropogenic emission, limited attention has been paid to the contribution from long-range transport. In this study, we apply simulations from six participating models supplied through the Task Force on Hemispheric Transport of Air Pollution phase 2 (HTAP2) exercise to investigate the long-range transport impact of Europe (EUR) and Russia–Belarus–Ukraine (RBU) on the surface air quality in eastern Asia (EAS), with special focus on their contributions during the haze episodes in China. The impact of 20 % anthropogenic emission perturbation from the source region is extrapolated by a factor of 5 to estimate the full impact. We find that the full impacts from EUR and RBU are 0.99 µg m<sup>−3</sup> (3.1 %) and 1.32 µg m<sup>−3</sup> (4.1 %) during haze episodes, while the annual averaged full impacts are only 0.35 µg m<sup>−3</sup> (1.7 %) and 0.53 µg m<sup>−3</sup> (2.6 %). By estimating the aerosol response within and above the planetary boundary layer (PBL), we find that long-range transport from EUR within the PBL contributes to 22–38 % of the total column density of aerosol response in EAS. Comparison with the HTAP phase 1 (HTAP1) assessment reveals that from 2000 to 2010, the long-range transport from Europe to eastern Asia has decreased significantly by a factor of 2–10 for surface aerosol mass concentration due to the simultaneous emission reduction in source regions and emission increase in the receptor region. We also find the long-range transport from the Europe and RBU regions increases the number of haze events in China by 0.15 % and 0.11 %, and the North China Plain and southeastern China has 1–3 extra haze days ( < 3 %). This study is the first investigation into the contribution of long-range transport to haze in China with multi-model experiments.</p>https://www.atmos-chem-phys.net/18/15581/2018/acp-18-15581-2018.pdf |