Modeling chemistry in and above snow at Summit, Greenland – Part 1: Model description and results
Sun-lit snow is increasingly recognized as a chemical reactor that plays an active role in uptake, transformation, and release of atmospheric trace gases. Snow is known to influence boundary layer air on a local scale, and given the large global surface coverage of snow may also be significant on re...
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ftdoajarticles:oai:doaj.org/article:bee01014527641b8aeae1edb5b5698c6 2023-05-15T15:11:52+02:00 Modeling chemistry in and above snow at Summit, Greenland – Part 1: Model description and results J. L. Thomas J. Stutz B. Lefer L. G. Huey K. Toyota J. E. Dibb R. von Glasow 2011-05-01T00:00:00Z https://doi.org/10.5194/acp-11-4899-2011 https://doaj.org/article/bee01014527641b8aeae1edb5b5698c6 EN eng Copernicus Publications http://www.atmos-chem-phys.net/11/4899/2011/acp-11-4899-2011.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-11-4899-2011 1680-7316 1680-7324 https://doaj.org/article/bee01014527641b8aeae1edb5b5698c6 Atmospheric Chemistry and Physics, Vol 11, Iss 10, Pp 4899-4914 (2011) Physics QC1-999 Chemistry QD1-999 article 2011 ftdoajarticles https://doi.org/10.5194/acp-11-4899-2011 2022-12-30T21:51:51Z Sun-lit snow is increasingly recognized as a chemical reactor that plays an active role in uptake, transformation, and release of atmospheric trace gases. Snow is known to influence boundary layer air on a local scale, and given the large global surface coverage of snow may also be significant on regional and global scales. We present a new detailed one-dimensional snow chemistry module that has been coupled to the 1-D atmospheric boundary layer model MISTRA. The new 1-D snow module, which is dynamically coupled to the overlaying atmospheric model, includes heat transport in the snowpack, molecular diffusion, and wind pumping of gases in the interstitial air. The model includes gas phase chemical reactions both in the interstitial air and the atmosphere. Heterogeneous and multiphase chemistry on atmospheric aerosol is considered explicitly. The chemical interaction of interstitial air with snow grains is simulated assuming chemistry in a liquid-like layer (LLL) on the grain surface. The coupled model, referred to as MISTRA-SNOW, was used to investigate snow as the source of nitrogen oxides (NO x ) and gas phase reactive bromine in the atmospheric boundary layer in the remote snow covered Arctic (over the Greenland ice sheet) as well as to investigate the link between halogen cycling and ozone depletion that has been observed in interstitial air. The model is validated using data taken 10 June–13 June, 2008 as part of the Greenland Summit Halogen-HO x experiment (GSHOX). The model predicts that reactions involving bromide and nitrate impurities in the surface snow can sustain atmospheric NO and BrO mixing ratios measured at Summit, Greenland during this period. Article in Journal/Newspaper Arctic Greenland Ice Sheet Directory of Open Access Journals: DOAJ Articles Arctic Greenland Atmospheric Chemistry and Physics 11 10 4899 4914 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 J. L. Thomas J. Stutz B. Lefer L. G. Huey K. Toyota J. E. Dibb R. von Glasow Modeling chemistry in and above snow at Summit, Greenland – Part 1: Model description and results |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Sun-lit snow is increasingly recognized as a chemical reactor that plays an active role in uptake, transformation, and release of atmospheric trace gases. Snow is known to influence boundary layer air on a local scale, and given the large global surface coverage of snow may also be significant on regional and global scales. We present a new detailed one-dimensional snow chemistry module that has been coupled to the 1-D atmospheric boundary layer model MISTRA. The new 1-D snow module, which is dynamically coupled to the overlaying atmospheric model, includes heat transport in the snowpack, molecular diffusion, and wind pumping of gases in the interstitial air. The model includes gas phase chemical reactions both in the interstitial air and the atmosphere. Heterogeneous and multiphase chemistry on atmospheric aerosol is considered explicitly. The chemical interaction of interstitial air with snow grains is simulated assuming chemistry in a liquid-like layer (LLL) on the grain surface. The coupled model, referred to as MISTRA-SNOW, was used to investigate snow as the source of nitrogen oxides (NO x ) and gas phase reactive bromine in the atmospheric boundary layer in the remote snow covered Arctic (over the Greenland ice sheet) as well as to investigate the link between halogen cycling and ozone depletion that has been observed in interstitial air. The model is validated using data taken 10 June–13 June, 2008 as part of the Greenland Summit Halogen-HO x experiment (GSHOX). The model predicts that reactions involving bromide and nitrate impurities in the surface snow can sustain atmospheric NO and BrO mixing ratios measured at Summit, Greenland during this period. |
format |
Article in Journal/Newspaper |
author |
J. L. Thomas J. Stutz B. Lefer L. G. Huey K. Toyota J. E. Dibb R. von Glasow |
author_facet |
J. L. Thomas J. Stutz B. Lefer L. G. Huey K. Toyota J. E. Dibb R. von Glasow |
author_sort |
J. L. Thomas |
title |
Modeling chemistry in and above snow at Summit, Greenland – Part 1: Model description and results |
title_short |
Modeling chemistry in and above snow at Summit, Greenland – Part 1: Model description and results |
title_full |
Modeling chemistry in and above snow at Summit, Greenland – Part 1: Model description and results |
title_fullStr |
Modeling chemistry in and above snow at Summit, Greenland – Part 1: Model description and results |
title_full_unstemmed |
Modeling chemistry in and above snow at Summit, Greenland – Part 1: Model description and results |
title_sort |
modeling chemistry in and above snow at summit, greenland – part 1: model description and results |
publisher |
Copernicus Publications |
publishDate |
2011 |
url |
https://doi.org/10.5194/acp-11-4899-2011 https://doaj.org/article/bee01014527641b8aeae1edb5b5698c6 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland Ice Sheet |
genre_facet |
Arctic Greenland Ice Sheet |
op_source |
Atmospheric Chemistry and Physics, Vol 11, Iss 10, Pp 4899-4914 (2011) |
op_relation |
http://www.atmos-chem-phys.net/11/4899/2011/acp-11-4899-2011.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-11-4899-2011 1680-7316 1680-7324 https://doaj.org/article/bee01014527641b8aeae1edb5b5698c6 |
op_doi |
https://doi.org/10.5194/acp-11-4899-2011 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
11 |
container_issue |
10 |
container_start_page |
4899 |
op_container_end_page |
4914 |
_version_ |
1766342661609881600 |