Measurement report: Vertical distribution of biogenic and anthropogenic secondary organic aerosols in the urban boundary layer over Beijing during late summer
<p>Secondary organic aerosol (SOA) plays a significant role in atmospheric chemistry. However, little is known about the vertical profiles of SOA in the urban boundary layer (UBL). This knowledge gap constrains the SOA simulation in chemical transport models. Here, the aerosol samples were syn...
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Language: | English |
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Copernicus Publications
2021-09-01
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Series: | Atmospheric Chemistry and Physics |
Online Access: | https://acp.copernicus.org/articles/21/12949/2021/acp-21-12949-2021.pdf |
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doaj-36618e494fba449a909102eadfddbdcd |
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record_format |
Article |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
H. Ren H. Ren W. Hu L. Wei S. Yue S. Yue J. Zhao L. Li L. Li L. Wu W. Zhao L. Ren M. Kang Q. Xie Q. Xie S. Su X. Pan Z. Wang Y. Sun K. Kawamura P. Fu |
spellingShingle |
H. Ren H. Ren W. Hu L. Wei S. Yue S. Yue J. Zhao L. Li L. Li L. Wu W. Zhao L. Ren M. Kang Q. Xie Q. Xie S. Su X. Pan Z. Wang Y. Sun K. Kawamura P. Fu Measurement report: Vertical distribution of biogenic and anthropogenic secondary organic aerosols in the urban boundary layer over Beijing during late summer Atmospheric Chemistry and Physics |
author_facet |
H. Ren H. Ren W. Hu L. Wei S. Yue S. Yue J. Zhao L. Li L. Li L. Wu W. Zhao L. Ren M. Kang Q. Xie Q. Xie S. Su X. Pan Z. Wang Y. Sun K. Kawamura P. Fu |
author_sort |
H. Ren |
title |
Measurement report: Vertical distribution of biogenic and anthropogenic secondary organic aerosols in the urban boundary layer over Beijing during late summer |
title_short |
Measurement report: Vertical distribution of biogenic and anthropogenic secondary organic aerosols in the urban boundary layer over Beijing during late summer |
title_full |
Measurement report: Vertical distribution of biogenic and anthropogenic secondary organic aerosols in the urban boundary layer over Beijing during late summer |
title_fullStr |
Measurement report: Vertical distribution of biogenic and anthropogenic secondary organic aerosols in the urban boundary layer over Beijing during late summer |
title_full_unstemmed |
Measurement report: Vertical distribution of biogenic and anthropogenic secondary organic aerosols in the urban boundary layer over Beijing during late summer |
title_sort |
measurement report: vertical distribution of biogenic and anthropogenic secondary organic aerosols in the urban boundary layer over beijing during late summer |
publisher |
Copernicus Publications |
series |
Atmospheric Chemistry and Physics |
issn |
1680-7316 1680-7324 |
publishDate |
2021-09-01 |
description |
<p>Secondary organic aerosol (SOA) plays a significant role in atmospheric
chemistry. However, little is known about the vertical profiles of SOA in the
urban boundary layer (UBL). This knowledge gap constrains the SOA simulation
in chemical transport models. Here, the aerosol samples were synchronously
collected at 8, 120, and 260 <span class="inline-formula">m</span> based on a 325 <span class="inline-formula">m</span> meteorological
tower in Beijing from 15 August to 10 September 2015. Strict emission controls
were implemented during this period for the 2015 China Victory Day
parade. Here, we observed that the total concentration of biogenic SOA tracers
increased with height. The fraction of SOA from isoprene oxidation increased
with height, whereas the fractions of SOA from monoterpenes and sesquiterpenes
decreased, and 2,3-dihydroxy-4-oxopentanoic acid (DHOPA), a tracer of
anthropogenic SOA from toluene oxidation, also increased with height. The
complicated vertical profiles of SOA tracers highlighted the need to
characterize SOA within the UBL. The mass concentration of estimated secondary
organic carbon (SOC) ranged from 341 to 673 <span class="inline-formula">ng C m<sup>−3</sup></span>. The
increase in the estimated SOC fractions from isoprene and toluene with height
was found to be more related to regional transport, whereas the decrease in the
estimated SOC from monoterpenes and sesquiterpene with height was more subject
to local emissions. Emission controls during the parade reduced SOC by
4 %–35 %, with toluene SOC decreasing more than the other SOC. This
study demonstrates that vertical distributions of SOA within the UBL are
complex, and the vertical profiles of SOA concentrations and sources should be
considered in field and modeling studies in the future.</p> |
url |
https://acp.copernicus.org/articles/21/12949/2021/acp-21-12949-2021.pdf |
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doaj-36618e494fba449a909102eadfddbdcd2021-09-01T07:30:11ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242021-09-0121129491296310.5194/acp-21-12949-2021Measurement report: Vertical distribution of biogenic and anthropogenic secondary organic aerosols in the urban boundary layer over Beijing during late summerH. Ren0H. Ren1W. Hu2L. Wei3S. Yue4S. Yue5J. Zhao6L. Li7L. Li8L. Wu9W. Zhao10L. Ren11M. Kang12Q. Xie13Q. Xie14S. Su15X. Pan16Z. Wang17Y. Sun18K. Kawamura19P. Fu20Institute of Surface-Earth System Science, School of Earth-System Science, Tianjin University, Tianjin 300072, ChinaState Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaInstitute of Surface-Earth System Science, School of Earth-System Science, Tianjin University, Tianjin 300072, ChinaState Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaState Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, Chinanow at: Minerva Research Group, Max Planck Institute for Chemistry, 55128 Mainz, GermanyState Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaState Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, Chinanow at: Department of Chemistry and Molecular Biology, University of Gothenburg, 412 96 Gothenburg, SwedenInstitute of Surface-Earth System Science, School of Earth-System Science, Tianjin University, Tianjin 300072, ChinaState Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaInstitute of Surface-Earth System Science, School of Earth-System Science, Tianjin University, Tianjin 300072, ChinaState Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaInstitute of Surface-Earth System Science, School of Earth-System Science, Tianjin University, Tianjin 300072, ChinaState Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaInstitute of Surface-Earth System Science, School of Earth-System Science, Tianjin University, Tianjin 300072, ChinaState Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaState Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaState Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, ChinaChubu Institute for Advanced Studies, Chubu University, Kasugai 487-8501, JapanInstitute of Surface-Earth System Science, School of Earth-System Science, Tianjin University, Tianjin 300072, China<p>Secondary organic aerosol (SOA) plays a significant role in atmospheric chemistry. However, little is known about the vertical profiles of SOA in the urban boundary layer (UBL). This knowledge gap constrains the SOA simulation in chemical transport models. Here, the aerosol samples were synchronously collected at 8, 120, and 260 <span class="inline-formula">m</span> based on a 325 <span class="inline-formula">m</span> meteorological tower in Beijing from 15 August to 10 September 2015. Strict emission controls were implemented during this period for the 2015 China Victory Day parade. Here, we observed that the total concentration of biogenic SOA tracers increased with height. The fraction of SOA from isoprene oxidation increased with height, whereas the fractions of SOA from monoterpenes and sesquiterpenes decreased, and 2,3-dihydroxy-4-oxopentanoic acid (DHOPA), a tracer of anthropogenic SOA from toluene oxidation, also increased with height. The complicated vertical profiles of SOA tracers highlighted the need to characterize SOA within the UBL. The mass concentration of estimated secondary organic carbon (SOC) ranged from 341 to 673 <span class="inline-formula">ng C m<sup>−3</sup></span>. The increase in the estimated SOC fractions from isoprene and toluene with height was found to be more related to regional transport, whereas the decrease in the estimated SOC from monoterpenes and sesquiterpene with height was more subject to local emissions. Emission controls during the parade reduced SOC by 4 %–35 %, with toluene SOC decreasing more than the other SOC. This study demonstrates that vertical distributions of SOA within the UBL are complex, and the vertical profiles of SOA concentrations and sources should be considered in field and modeling studies in the future.</p>https://acp.copernicus.org/articles/21/12949/2021/acp-21-12949-2021.pdf |