Carbonaceous aerosols recorded in a southeastern Tibetan glacier: analysis of temporal variations and model estimates of sources and radiative forcing
High temporal resolution measurements of black carbon (BC) and organic carbon (OC) covering the time period of 1956–2006 in an ice core over the southeastern Tibetan Plateau show a distinct seasonal dependence of BC and OC with higher respective concentrations but a lower OC / BC ratio in the non-mo...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00044575 2023-05-15T16:38:49+02:00 Carbonaceous aerosols recorded in a southeastern Tibetan glacier: analysis of temporal variations and model estimates of sources and radiative forcing Wang, M. Xu, B. Cao, J. Tie, X. Wang, H. Zhang, R. Qian, Y. Rasch, P. J. Zhao, S. Wu, G. Zhao, H. Joswiak, D. R. Li, J. Xie, Y. 2015-02 electronic https://doi.org/10.5194/acp-15-1191-2015 https://noa.gwlb.de/receive/cop_mods_00044575 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00044195/acp-15-1191-2015.pdf https://acp.copernicus.org/articles/15/1191/2015/acp-15-1191-2015.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-15-1191-2015 https://noa.gwlb.de/receive/cop_mods_00044575 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00044195/acp-15-1191-2015.pdf https://acp.copernicus.org/articles/15/1191/2015/acp-15-1191-2015.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2015 ftnonlinearchiv https://doi.org/10.5194/acp-15-1191-2015 2022-02-08T22:40:00Z High temporal resolution measurements of black carbon (BC) and organic carbon (OC) covering the time period of 1956–2006 in an ice core over the southeastern Tibetan Plateau show a distinct seasonal dependence of BC and OC with higher respective concentrations but a lower OC / BC ratio in the non-monsoon season than during the summer monsoon. We use a global aerosol-climate model, in which BC emitted from different source regions can be explicitly tracked, to quantify BC source–receptor relationships between four Asian source regions and the southeastern Tibetan Plateau as a receptor. The model results show that South Asia has the largest contribution to the present-day (1996–2005) mean BC deposition at the ice-core drilling site during the non-monsoon season (October to May) (81%) and all year round (74%), followed by East Asia (14% to the non-monsoon mean and 21% to the annual mean). The ice-core record also indicates stable and relatively low BC and OC deposition fluxes from the late 1950s to 1980, followed by an overall increase to recent years. This trend is consistent with the BC and OC emission inventories and the fuel consumption of South Asia (as the primary contributor to annual mean BC deposition). Moreover, the increasing trend of the OC / BC ratio since the early 1990s indicates a growing contribution of coal combustion and/or biomass burning to the emissions. The estimated radiative forcing induced by BC and OC impurities in snow has increased since 1980, suggesting an increasing potential influence of carbonaceous aerosols on the Tibetan glacier melting and the availability of water resources in the surrounding regions. Our study indicates that more attention to OC is merited because of its non-negligible light absorption and the recent rapid increases evident in the ice-core record. Article in Journal/Newspaper ice core Niedersächsisches Online-Archiv NOA Atmospheric Chemistry and Physics 15 3 1191 1204 |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Wang, M. Xu, B. Cao, J. Tie, X. Wang, H. Zhang, R. Qian, Y. Rasch, P. J. Zhao, S. Wu, G. Zhao, H. Joswiak, D. R. Li, J. Xie, Y. Carbonaceous aerosols recorded in a southeastern Tibetan glacier: analysis of temporal variations and model estimates of sources and radiative forcing |
topic_facet |
article Verlagsveröffentlichung |
description |
High temporal resolution measurements of black carbon (BC) and organic carbon (OC) covering the time period of 1956–2006 in an ice core over the southeastern Tibetan Plateau show a distinct seasonal dependence of BC and OC with higher respective concentrations but a lower OC / BC ratio in the non-monsoon season than during the summer monsoon. We use a global aerosol-climate model, in which BC emitted from different source regions can be explicitly tracked, to quantify BC source–receptor relationships between four Asian source regions and the southeastern Tibetan Plateau as a receptor. The model results show that South Asia has the largest contribution to the present-day (1996–2005) mean BC deposition at the ice-core drilling site during the non-monsoon season (October to May) (81%) and all year round (74%), followed by East Asia (14% to the non-monsoon mean and 21% to the annual mean). The ice-core record also indicates stable and relatively low BC and OC deposition fluxes from the late 1950s to 1980, followed by an overall increase to recent years. This trend is consistent with the BC and OC emission inventories and the fuel consumption of South Asia (as the primary contributor to annual mean BC deposition). Moreover, the increasing trend of the OC / BC ratio since the early 1990s indicates a growing contribution of coal combustion and/or biomass burning to the emissions. The estimated radiative forcing induced by BC and OC impurities in snow has increased since 1980, suggesting an increasing potential influence of carbonaceous aerosols on the Tibetan glacier melting and the availability of water resources in the surrounding regions. Our study indicates that more attention to OC is merited because of its non-negligible light absorption and the recent rapid increases evident in the ice-core record. |
format |
Article in Journal/Newspaper |
author |
Wang, M. Xu, B. Cao, J. Tie, X. Wang, H. Zhang, R. Qian, Y. Rasch, P. J. Zhao, S. Wu, G. Zhao, H. Joswiak, D. R. Li, J. Xie, Y. |
author_facet |
Wang, M. Xu, B. Cao, J. Tie, X. Wang, H. Zhang, R. Qian, Y. Rasch, P. J. Zhao, S. Wu, G. Zhao, H. Joswiak, D. R. Li, J. Xie, Y. |
author_sort |
Wang, M. |
title |
Carbonaceous aerosols recorded in a southeastern Tibetan glacier: analysis of temporal variations and model estimates of sources and radiative forcing |
title_short |
Carbonaceous aerosols recorded in a southeastern Tibetan glacier: analysis of temporal variations and model estimates of sources and radiative forcing |
title_full |
Carbonaceous aerosols recorded in a southeastern Tibetan glacier: analysis of temporal variations and model estimates of sources and radiative forcing |
title_fullStr |
Carbonaceous aerosols recorded in a southeastern Tibetan glacier: analysis of temporal variations and model estimates of sources and radiative forcing |
title_full_unstemmed |
Carbonaceous aerosols recorded in a southeastern Tibetan glacier: analysis of temporal variations and model estimates of sources and radiative forcing |
title_sort |
carbonaceous aerosols recorded in a southeastern tibetan glacier: analysis of temporal variations and model estimates of sources and radiative forcing |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/acp-15-1191-2015 https://noa.gwlb.de/receive/cop_mods_00044575 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00044195/acp-15-1191-2015.pdf https://acp.copernicus.org/articles/15/1191/2015/acp-15-1191-2015.pdf |
genre |
ice core |
genre_facet |
ice core |
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-15-1191-2015 https://noa.gwlb.de/receive/cop_mods_00044575 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00044195/acp-15-1191-2015.pdf https://acp.copernicus.org/articles/15/1191/2015/acp-15-1191-2015.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-15-1191-2015 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
15 |
container_issue |
3 |
container_start_page |
1191 |
op_container_end_page |
1204 |
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1766029153502494720 |