Wind enhances differential air advection in surface snow at sub-meter scales
Atmospheric pressure gradients and pressure fluctuations drive within-snow air movement that enhances gas mobility through interstitial pore space. The magnitude of this enhancement in relation to snow microstructure properties cannot be well predicted with current methods. In a set of field experim...
Published in: | The Cryosphere |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Copernicus Publications
2017
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00009084 2023-05-15T18:32:32+02:00 Wind enhances differential air advection in surface snow at sub-meter scales Drake, Stephen A. Selker, John S. Higgins, Chad W. 2017-09 electronic https://doi.org/10.5194/tc-11-2075-2017 https://noa.gwlb.de/receive/cop_mods_00009084 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00009041/tc-11-2075-2017.pdf https://tc.copernicus.org/articles/11/2075/2017/tc-11-2075-2017.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-11-2075-2017 https://noa.gwlb.de/receive/cop_mods_00009084 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00009041/tc-11-2075-2017.pdf https://tc.copernicus.org/articles/11/2075/2017/tc-11-2075-2017.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2017 ftnonlinearchiv https://doi.org/10.5194/tc-11-2075-2017 2022-02-08T22:57:45Z Atmospheric pressure gradients and pressure fluctuations drive within-snow air movement that enhances gas mobility through interstitial pore space. The magnitude of this enhancement in relation to snow microstructure properties cannot be well predicted with current methods. In a set of field experiments, we injected a dilute mixture of 1 % carbon monoxide (CO) and nitrogen gas (N2) of known volume into the topmost layer of a snowpack and, using a distributed array of thin film sensors, measured plume evolution as a function of wind forcing. We found enhanced dispersion in the streamwise direction and also along low-resistance pathways in the presence of wind. These results suggest that atmospheric constituents contained in snow can be anisotropically mixed depending on the wind environment and snow structure, having implications for surface snow reaction rates and interpretation of firn and ice cores. Article in Journal/Newspaper The Cryosphere Niedersächsisches Online-Archiv NOA The Cryosphere 11 5 2075 2087 |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Drake, Stephen A. Selker, John S. Higgins, Chad W. Wind enhances differential air advection in surface snow at sub-meter scales |
topic_facet |
article Verlagsveröffentlichung |
description |
Atmospheric pressure gradients and pressure fluctuations drive within-snow air movement that enhances gas mobility through interstitial pore space. The magnitude of this enhancement in relation to snow microstructure properties cannot be well predicted with current methods. In a set of field experiments, we injected a dilute mixture of 1 % carbon monoxide (CO) and nitrogen gas (N2) of known volume into the topmost layer of a snowpack and, using a distributed array of thin film sensors, measured plume evolution as a function of wind forcing. We found enhanced dispersion in the streamwise direction and also along low-resistance pathways in the presence of wind. These results suggest that atmospheric constituents contained in snow can be anisotropically mixed depending on the wind environment and snow structure, having implications for surface snow reaction rates and interpretation of firn and ice cores. |
format |
Article in Journal/Newspaper |
author |
Drake, Stephen A. Selker, John S. Higgins, Chad W. |
author_facet |
Drake, Stephen A. Selker, John S. Higgins, Chad W. |
author_sort |
Drake, Stephen A. |
title |
Wind enhances differential air advection in surface snow at sub-meter scales |
title_short |
Wind enhances differential air advection in surface snow at sub-meter scales |
title_full |
Wind enhances differential air advection in surface snow at sub-meter scales |
title_fullStr |
Wind enhances differential air advection in surface snow at sub-meter scales |
title_full_unstemmed |
Wind enhances differential air advection in surface snow at sub-meter scales |
title_sort |
wind enhances differential air advection in surface snow at sub-meter scales |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/tc-11-2075-2017 https://noa.gwlb.de/receive/cop_mods_00009084 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00009041/tc-11-2075-2017.pdf https://tc.copernicus.org/articles/11/2075/2017/tc-11-2075-2017.pdf |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-11-2075-2017 https://noa.gwlb.de/receive/cop_mods_00009084 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00009041/tc-11-2075-2017.pdf https://tc.copernicus.org/articles/11/2075/2017/tc-11-2075-2017.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-11-2075-2017 |
container_title |
The Cryosphere |
container_volume |
11 |
container_issue |
5 |
container_start_page |
2075 |
op_container_end_page |
2087 |
_version_ |
1766216653357449216 |