1-D Air-snowpack modeling of atmospheric nitrous acid at South Pole during ANTCI 2003
A 1-D air-snowpack model of HONO has been developed and constrained by observed chemistry and meteorology data. The 1-D model includes molecular diffusion and mechanical dispersion, windpumping in snow, gas phase to quasi-liquid layer phase HONO transfer and quasi-liquid layer nitrate and interstiti...
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Copernicus Publications
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00047981 2023-05-15T18:22:36+02:00 1-D Air-snowpack modeling of atmospheric nitrous acid at South Pole during ANTCI 2003 Liao, W. Tan, D. 2008-12 electronic https://doi.org/10.5194/acp-8-7087-2008 https://noa.gwlb.de/receive/cop_mods_00047981 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00047601/acp-8-7087-2008.pdf https://acp.copernicus.org/articles/8/7087/2008/acp-8-7087-2008.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-8-7087-2008 https://noa.gwlb.de/receive/cop_mods_00047981 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00047601/acp-8-7087-2008.pdf https://acp.copernicus.org/articles/8/7087/2008/acp-8-7087-2008.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2008 ftnonlinearchiv https://doi.org/10.5194/acp-8-7087-2008 2022-02-08T22:38:12Z A 1-D air-snowpack model of HONO has been developed and constrained by observed chemistry and meteorology data. The 1-D model includes molecular diffusion and mechanical dispersion, windpumping in snow, gas phase to quasi-liquid layer phase HONO transfer and quasi-liquid layer nitrate and interstitial air HONO photolysis. Photolysis of nitrate is important as a dominant HONO source inside the snowpack, however, the observed HONO emission from the snowpack was triggered mainly by the equilibrium between quasi liquid layer nitrite and firn air HONO deep down the snow surface (i.e. 30 cm below snow surface). The high concentration of HONO in the firn air is subsequently transported above the snowpack by diffusion and windpumping. The model uncertainties come mainly from lack of measurements and the interpretation of the QLL properties based on the bulk snow measurements. One critical factor is the ionic strength of QLL nitrite, which is estimated here by the bulk snow pH, nitrite concentration, and QLL to bulk snow volume ratio. Article in Journal/Newspaper South pole Niedersächsisches Online-Archiv NOA South Pole Atmospheric Chemistry and Physics 8 23 7087 7099 |
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Niedersächsisches Online-Archiv NOA |
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English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Liao, W. Tan, D. 1-D Air-snowpack modeling of atmospheric nitrous acid at South Pole during ANTCI 2003 |
topic_facet |
article Verlagsveröffentlichung |
description |
A 1-D air-snowpack model of HONO has been developed and constrained by observed chemistry and meteorology data. The 1-D model includes molecular diffusion and mechanical dispersion, windpumping in snow, gas phase to quasi-liquid layer phase HONO transfer and quasi-liquid layer nitrate and interstitial air HONO photolysis. Photolysis of nitrate is important as a dominant HONO source inside the snowpack, however, the observed HONO emission from the snowpack was triggered mainly by the equilibrium between quasi liquid layer nitrite and firn air HONO deep down the snow surface (i.e. 30 cm below snow surface). The high concentration of HONO in the firn air is subsequently transported above the snowpack by diffusion and windpumping. The model uncertainties come mainly from lack of measurements and the interpretation of the QLL properties based on the bulk snow measurements. One critical factor is the ionic strength of QLL nitrite, which is estimated here by the bulk snow pH, nitrite concentration, and QLL to bulk snow volume ratio. |
format |
Article in Journal/Newspaper |
author |
Liao, W. Tan, D. |
author_facet |
Liao, W. Tan, D. |
author_sort |
Liao, W. |
title |
1-D Air-snowpack modeling of atmospheric nitrous acid at South Pole during ANTCI 2003 |
title_short |
1-D Air-snowpack modeling of atmospheric nitrous acid at South Pole during ANTCI 2003 |
title_full |
1-D Air-snowpack modeling of atmospheric nitrous acid at South Pole during ANTCI 2003 |
title_fullStr |
1-D Air-snowpack modeling of atmospheric nitrous acid at South Pole during ANTCI 2003 |
title_full_unstemmed |
1-D Air-snowpack modeling of atmospheric nitrous acid at South Pole during ANTCI 2003 |
title_sort |
1-d air-snowpack modeling of atmospheric nitrous acid at south pole during antci 2003 |
publisher |
Copernicus Publications |
publishDate |
2008 |
url |
https://doi.org/10.5194/acp-8-7087-2008 https://noa.gwlb.de/receive/cop_mods_00047981 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00047601/acp-8-7087-2008.pdf https://acp.copernicus.org/articles/8/7087/2008/acp-8-7087-2008.pdf |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
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-8-7087-2008 https://noa.gwlb.de/receive/cop_mods_00047981 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00047601/acp-8-7087-2008.pdf https://acp.copernicus.org/articles/8/7087/2008/acp-8-7087-2008.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-8-7087-2008 |
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Atmospheric Chemistry and Physics |
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8 |
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23 |
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7087 |
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7099 |
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