Enhancement of snow albedo reduction and radiative forcing due to coated black carbon in snow
When black carbon (BC) is mixed internally with other atmospheric particles, the BC light absorption effect is enhanced. This study explicitly resolved the optical properties of coated BC in snow based on the core <math xmlns="http://www.w3.org/1998/Math/MathML" id="M1" displa...
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Online Access: | https://doi.org/10.5194/tc-15-2255-2021 https://tc.copernicus.org/articles/15/2255/2021/ |
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ftcopernicus:oai:publications.copernicus.org:tc88601 2023-05-15T13:11:12+02:00 Enhancement of snow albedo reduction and radiative forcing due to coated black carbon in snow Pu, Wei Shi, Tenglong Cui, Jiecan Chen, Yang Zhou, Yue Wang, Xin 2021-05-17 application/pdf https://doi.org/10.5194/tc-15-2255-2021 https://tc.copernicus.org/articles/15/2255/2021/ eng eng doi:10.5194/tc-15-2255-2021 https://tc.copernicus.org/articles/15/2255/2021/ eISSN: 1994-0424 Text 2021 ftcopernicus https://doi.org/10.5194/tc-15-2255-2021 2021-05-24T16:22:16Z When black carbon (BC) is mixed internally with other atmospheric particles, the BC light absorption effect is enhanced. This study explicitly resolved the optical properties of coated BC in snow based on the core <math xmlns="http://www.w3.org/1998/Math/MathML" id="M1" display="inline" overflow="scroll" dspmath="mathml"><mo>/</mo></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="8pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="1b4178c77ca0d4bfee6c9ddd864f3a43"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tc-15-2255-2021-ie00001.svg" width="8pt" height="14pt" src="tc-15-2255-2021-ie00001.png"/></svg:svg> shell Mie theory and the Snow, Ice, and Aerosol Radiative (SNICAR) model. Our results indicated that the BC coating effect enhances the reduction in snow albedo by a factor ranging from 1.1–1.8 for a nonabsorbing shell and 1.1–1.3 for an absorbing shell, depending on the BC concentration, snow grain radius, and core <math xmlns="http://www.w3.org/1998/Math/MathML" id="M2" display="inline" overflow="scroll" dspmath="mathml"><mo>/</mo></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="8pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="527256ea34e0af356380afd605ccefc0"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tc-15-2255-2021-ie00002.svg" width="8pt" height="14pt" src="tc-15-2255-2021-ie00002.png"/></svg:svg> shell ratio. We developed parameterizations of the BC coating effect for application to climate models, which provides a convenient way to accurately estimate the climate impact of BC in snow. Finally, based on a comprehensive set of in situ measurements across the Northern Hemisphere, we determined that the contribution of the BC coating effect to snow light absorption exceeds that of dust over northern China. Notably, high enhancements of snow albedo reduction due to the BC coating effect were found in the Arctic and Tibetan Plateau, suggesting a greater contribution of BC to the retreat of Arctic sea ice and Tibetan glaciers. Text albedo Arctic black carbon Sea ice Copernicus Publications: E-Journals Arctic The Cryosphere 15 5 2255 2272 |
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Open Polar |
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Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
When black carbon (BC) is mixed internally with other atmospheric particles, the BC light absorption effect is enhanced. This study explicitly resolved the optical properties of coated BC in snow based on the core <math xmlns="http://www.w3.org/1998/Math/MathML" id="M1" display="inline" overflow="scroll" dspmath="mathml"><mo>/</mo></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="8pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="1b4178c77ca0d4bfee6c9ddd864f3a43"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tc-15-2255-2021-ie00001.svg" width="8pt" height="14pt" src="tc-15-2255-2021-ie00001.png"/></svg:svg> shell Mie theory and the Snow, Ice, and Aerosol Radiative (SNICAR) model. Our results indicated that the BC coating effect enhances the reduction in snow albedo by a factor ranging from 1.1–1.8 for a nonabsorbing shell and 1.1–1.3 for an absorbing shell, depending on the BC concentration, snow grain radius, and core <math xmlns="http://www.w3.org/1998/Math/MathML" id="M2" display="inline" overflow="scroll" dspmath="mathml"><mo>/</mo></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="8pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="527256ea34e0af356380afd605ccefc0"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tc-15-2255-2021-ie00002.svg" width="8pt" height="14pt" src="tc-15-2255-2021-ie00002.png"/></svg:svg> shell ratio. We developed parameterizations of the BC coating effect for application to climate models, which provides a convenient way to accurately estimate the climate impact of BC in snow. Finally, based on a comprehensive set of in situ measurements across the Northern Hemisphere, we determined that the contribution of the BC coating effect to snow light absorption exceeds that of dust over northern China. Notably, high enhancements of snow albedo reduction due to the BC coating effect were found in the Arctic and Tibetan Plateau, suggesting a greater contribution of BC to the retreat of Arctic sea ice and Tibetan glaciers. |
format |
Text |
author |
Pu, Wei Shi, Tenglong Cui, Jiecan Chen, Yang Zhou, Yue Wang, Xin |
spellingShingle |
Pu, Wei Shi, Tenglong Cui, Jiecan Chen, Yang Zhou, Yue Wang, Xin Enhancement of snow albedo reduction and radiative forcing due to coated black carbon in snow |
author_facet |
Pu, Wei Shi, Tenglong Cui, Jiecan Chen, Yang Zhou, Yue Wang, Xin |
author_sort |
Pu, Wei |
title |
Enhancement of snow albedo reduction and radiative forcing due to coated black carbon in snow |
title_short |
Enhancement of snow albedo reduction and radiative forcing due to coated black carbon in snow |
title_full |
Enhancement of snow albedo reduction and radiative forcing due to coated black carbon in snow |
title_fullStr |
Enhancement of snow albedo reduction and radiative forcing due to coated black carbon in snow |
title_full_unstemmed |
Enhancement of snow albedo reduction and radiative forcing due to coated black carbon in snow |
title_sort |
enhancement of snow albedo reduction and radiative forcing due to coated black carbon in snow |
publishDate |
2021 |
url |
https://doi.org/10.5194/tc-15-2255-2021 https://tc.copernicus.org/articles/15/2255/2021/ |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
albedo Arctic black carbon Sea ice |
genre_facet |
albedo Arctic black carbon Sea ice |
op_source |
eISSN: 1994-0424 |
op_relation |
doi:10.5194/tc-15-2255-2021 https://tc.copernicus.org/articles/15/2255/2021/ |
op_doi |
https://doi.org/10.5194/tc-15-2255-2021 |
container_title |
The Cryosphere |
container_volume |
15 |
container_issue |
5 |
container_start_page |
2255 |
op_container_end_page |
2272 |
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1766246321089413120 |