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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Language: | English |
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COPERNICUS GESELLSCHAFT MBH
2015
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Online Access: | http://ir.ieecas.cn/handle/361006/9393 http://ir.ieecas.cn/handle/361006/9394 https://doi.org/10.5194/acp-15-1191-2015 |
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ftchinacascieeca:oai:ir.ieecas.cn:361006/9394 2023-06-11T04:03:16+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 http://ir.ieecas.cn/handle/361006/9393 http://ir.ieecas.cn/handle/361006/9394 https://doi.org/10.5194/acp-15-1191-2015 英语 eng COPERNICUS GESELLSCHAFT MBH ATMOSPHERIC CHEMISTRY AND PHYSICS http://ir.ieecas.cn/handle/361006/9393 http://ir.ieecas.cn/handle/361006/9394 doi:10.5194/acp-15-1191-2015 Science & Technology Physical Sciences Light-absorbing Impurities Atmospheric Brown Clouds Black-carbon Organic-carbon Arctic Snow Hydrological Cycle Optical-properties Spectral Albedo Sulfur-dioxide Rural India Meteorology & Atmospheric Sciences Article 期刊论文 2015 ftchinacascieeca https://doi.org/10.5194/acp-15-1191-2015 2023-05-08T13:23:09Z 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 presentday (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 albedo Arctic black carbon ice core Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) Arctic Atmospheric Chemistry and Physics 15 3 1191 1204 |
institution |
Open Polar |
collection |
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacascieeca |
language |
English |
topic |
Science & Technology Physical Sciences Light-absorbing Impurities Atmospheric Brown Clouds Black-carbon Organic-carbon Arctic Snow Hydrological Cycle Optical-properties Spectral Albedo Sulfur-dioxide Rural India Meteorology & Atmospheric Sciences |
spellingShingle |
Science & Technology Physical Sciences Light-absorbing Impurities Atmospheric Brown Clouds Black-carbon Organic-carbon Arctic Snow Hydrological Cycle Optical-properties Spectral Albedo Sulfur-dioxide Rural India Meteorology & Atmospheric Sciences 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 |
Science & Technology Physical Sciences Light-absorbing Impurities Atmospheric Brown Clouds Black-carbon Organic-carbon Arctic Snow Hydrological Cycle Optical-properties Spectral Albedo Sulfur-dioxide Rural India Meteorology & Atmospheric Sciences |
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 presentday (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 GESELLSCHAFT MBH |
publishDate |
2015 |
url |
http://ir.ieecas.cn/handle/361006/9393 http://ir.ieecas.cn/handle/361006/9394 https://doi.org/10.5194/acp-15-1191-2015 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
albedo Arctic black carbon ice core |
genre_facet |
albedo Arctic black carbon ice core |
op_relation |
ATMOSPHERIC CHEMISTRY AND PHYSICS http://ir.ieecas.cn/handle/361006/9393 http://ir.ieecas.cn/handle/361006/9394 doi:10.5194/acp-15-1191-2015 |
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 |
_version_ |
1768378123228807168 |