Classification and investigation of Asian aerosol absorptive properties

Asian aerosols are among the most complex yet widely studied components of the atmosphere not only due to their seasonal variability but also their effects on climate change. Four Aerosol Robotic Network (AERONET) sites have been selected to represent aerosol properties dominated by pollution (Taihu...

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Published in:Atmospheric Chemistry and Physics
Main Authors: Logan, T., Xi, B., Dong, X., Li, Z., Cribb, M.
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Publications 2013
Subjects:
Online Access:https://doi.org/10.5194/acp-13-2253-2013
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spelling ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00050205 2023-05-15T13:06:41+02:00 Classification and investigation of Asian aerosol absorptive properties Logan, T. Xi, B. Dong, X. Li, Z. Cribb, M. 2013-02 electronic https://doi.org/10.5194/acp-13-2253-2013 https://noa.gwlb.de/receive/cop_mods_00050205 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049819/acp-13-2253-2013.pdf https://acp.copernicus.org/articles/13/2253/2013/acp-13-2253-2013.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-13-2253-2013 https://noa.gwlb.de/receive/cop_mods_00050205 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049819/acp-13-2253-2013.pdf https://acp.copernicus.org/articles/13/2253/2013/acp-13-2253-2013.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2013 ftnonlinearchiv https://doi.org/10.5194/acp-13-2253-2013 2022-02-08T22:36:59Z Asian aerosols are among the most complex yet widely studied components of the atmosphere not only due to their seasonal variability but also their effects on climate change. Four Aerosol Robotic Network (AERONET) sites have been selected to represent aerosol properties dominated by pollution (Taihu), mixed complex particle types (Xianghe), desert-urban (SACOL), and biomass (Mukdahan) in East Asia during the 2001–2010 period. The volume size distribution, aerosol optical depth (τ and τabs), Ångström exponent (α and αabs), and the single scattering co-albedo (ωoabs) parameters over the four selected sites have been used to (a) illustrate seasonal changes in aerosol size and composition and (b) discern the absorptive characteristics of black carbon (BC), organic carbon (OC), mineral dust particles, and mixtures. A strongly absorbing mineral dust influence is seen at the Xianghe, Taihu, and SACOL sites during the spring months (MAM), as given by coarse mode dominance, mean α440–870 < 1, and mean αabs440–870 > 1.5. There is a shift towards weakly absorbing pollution (sulfate) and biomass (OC) aerosol dominance in the summer (JJA) and autumn (SON) months, as given by a strong fine mode influence, α440–870 > 1, and αabs440–870 < 1.5. A winter season (DJF) shift toward strongly fine mode, absorbing particles (BC and OC) is observed at Xianghe and Taihu (αabs440–870 > 1 and αabs440–870 > 1.5). At Mukdahan, a strong fine mode influence is evident year round, with weakly and strongly absorbing biomass particles dominant in the autumn and winter months, respectively, while particles exhibit variable absorption during the spring season. A classification method using α440–870 and ωoabs440 is developed in order to infer the seasonal physico-chemical properties of the aerosol types, such as fine and coarse mode, weak and strong absorption, at the four selected Asian sites. Article in Journal/Newspaper Aerosol Robotic Network Niedersächsisches Online-Archiv NOA Atmospheric Chemistry and Physics 13 4 2253 2265
institution Open Polar
collection Niedersächsisches Online-Archiv NOA
op_collection_id ftnonlinearchiv
language English
topic article
Verlagsveröffentlichung
spellingShingle article
Verlagsveröffentlichung
Logan, T.
Xi, B.
Dong, X.
Li, Z.
Cribb, M.
Classification and investigation of Asian aerosol absorptive properties
topic_facet article
Verlagsveröffentlichung
description Asian aerosols are among the most complex yet widely studied components of the atmosphere not only due to their seasonal variability but also their effects on climate change. Four Aerosol Robotic Network (AERONET) sites have been selected to represent aerosol properties dominated by pollution (Taihu), mixed complex particle types (Xianghe), desert-urban (SACOL), and biomass (Mukdahan) in East Asia during the 2001–2010 period. The volume size distribution, aerosol optical depth (τ and τabs), Ångström exponent (α and αabs), and the single scattering co-albedo (ωoabs) parameters over the four selected sites have been used to (a) illustrate seasonal changes in aerosol size and composition and (b) discern the absorptive characteristics of black carbon (BC), organic carbon (OC), mineral dust particles, and mixtures. A strongly absorbing mineral dust influence is seen at the Xianghe, Taihu, and SACOL sites during the spring months (MAM), as given by coarse mode dominance, mean α440–870 < 1, and mean αabs440–870 > 1.5. There is a shift towards weakly absorbing pollution (sulfate) and biomass (OC) aerosol dominance in the summer (JJA) and autumn (SON) months, as given by a strong fine mode influence, α440–870 > 1, and αabs440–870 < 1.5. A winter season (DJF) shift toward strongly fine mode, absorbing particles (BC and OC) is observed at Xianghe and Taihu (αabs440–870 > 1 and αabs440–870 > 1.5). At Mukdahan, a strong fine mode influence is evident year round, with weakly and strongly absorbing biomass particles dominant in the autumn and winter months, respectively, while particles exhibit variable absorption during the spring season. A classification method using α440–870 and ωoabs440 is developed in order to infer the seasonal physico-chemical properties of the aerosol types, such as fine and coarse mode, weak and strong absorption, at the four selected Asian sites.
format Article in Journal/Newspaper
author Logan, T.
Xi, B.
Dong, X.
Li, Z.
Cribb, M.
author_facet Logan, T.
Xi, B.
Dong, X.
Li, Z.
Cribb, M.
author_sort Logan, T.
title Classification and investigation of Asian aerosol absorptive properties
title_short Classification and investigation of Asian aerosol absorptive properties
title_full Classification and investigation of Asian aerosol absorptive properties
title_fullStr Classification and investigation of Asian aerosol absorptive properties
title_full_unstemmed Classification and investigation of Asian aerosol absorptive properties
title_sort classification and investigation of asian aerosol absorptive properties
publisher Copernicus Publications
publishDate 2013
url https://doi.org/10.5194/acp-13-2253-2013
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https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049819/acp-13-2253-2013.pdf
https://acp.copernicus.org/articles/13/2253/2013/acp-13-2253-2013.pdf
genre Aerosol Robotic Network
genre_facet Aerosol Robotic Network
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-13-2253-2013
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https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049819/acp-13-2253-2013.pdf
https://acp.copernicus.org/articles/13/2253/2013/acp-13-2253-2013.pdf
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container_title Atmospheric Chemistry and Physics
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