Impact of measured and simulated tundra snowpack properties on heat transfer
Snowpack microstructure controls the transfer of heat to, as well as the temperature of, the underlying soils. In situ measurements of snow and soil properties from four field campaigns during two winters (March and November 2018, January and March 2019) were compared to an ensemble of CLM5.0 (Commu...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00063115 2023-05-15T15:08:33+02:00 Impact of measured and simulated tundra snowpack properties on heat transfer Dutch, Victoria R. Rutter, Nick Wake, Leanne Sandells, Melody Derksen, Chris Walker, Branden Hould Gosselin, Gabriel Sonnentag, Oliver Essery, Richard Kelly, Richard Marsh, Phillip King, Joshua Boike, Julia 2022-10 electronic https://doi.org/10.5194/tc-16-4201-2022 https://noa.gwlb.de/receive/cop_mods_00063115 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00062249/tc-16-4201-2022.pdf https://tc.copernicus.org/articles/16/4201/2022/tc-16-4201-2022.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-16-4201-2022 https://noa.gwlb.de/receive/cop_mods_00063115 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00062249/tc-16-4201-2022.pdf https://tc.copernicus.org/articles/16/4201/2022/tc-16-4201-2022.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2022 ftnonlinearchiv https://doi.org/10.5194/tc-16-4201-2022 2022-10-23T23:12:06Z Snowpack microstructure controls the transfer of heat to, as well as the temperature of, the underlying soils. In situ measurements of snow and soil properties from four field campaigns during two winters (March and November 2018, January and March 2019) were compared to an ensemble of CLM5.0 (Community Land Model) simulations, at Trail Valley Creek, Northwest Territories, Canada. Snow micropenetrometer profiles allowed for snowpack density and thermal conductivity to be derived at higher vertical resolution (1.25 mm) and a larger sample size (n=1050) compared to traditional snowpit observations (3 cm vertical resolution; n=115). Comparing measurements with simulations shows CLM overestimated snow thermal conductivity by a factor of 3, leading to a cold bias in wintertime soil temperatures (RMSE=5.8 ∘C). Two different approaches were taken to reduce this bias: alternative parameterisations of snow thermal conductivity and the application of a correction factor. All the evaluated parameterisations of snow thermal conductivity improved simulations of wintertime soil temperatures, with that of Sturm et al. (1997) having the greatest impact (RMSE=2.5 ∘C). The required correction factor is strongly related to snow depth ( R2=0.77,RMSE=0.066) and thus differs between the two snow seasons, limiting the applicability of such an approach. Improving simulated snow properties and the corresponding heat flux is important, as wintertime soil temperatures are an important control on subnivean soil respiration and hence impact Arctic winter carbon fluxes and budgets. Article in Journal/Newspaper Arctic Northwest Territories The Cryosphere Tundra Niedersächsisches Online-Archiv NOA Arctic Canada Northwest Territories Sturm ENVELOPE(162.967,162.967,-71.050,-71.050) Trail Valley Creek ENVELOPE(-133.415,-133.415,68.772,68.772) Valley Creek ENVELOPE(-138.324,-138.324,63.326,63.326) The Cryosphere 16 10 4201 4222 |
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Niedersächsisches Online-Archiv NOA |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Dutch, Victoria R. Rutter, Nick Wake, Leanne Sandells, Melody Derksen, Chris Walker, Branden Hould Gosselin, Gabriel Sonnentag, Oliver Essery, Richard Kelly, Richard Marsh, Phillip King, Joshua Boike, Julia Impact of measured and simulated tundra snowpack properties on heat transfer |
topic_facet |
article Verlagsveröffentlichung |
description |
Snowpack microstructure controls the transfer of heat to, as well as the temperature of, the underlying soils. In situ measurements of snow and soil properties from four field campaigns during two winters (March and November 2018, January and March 2019) were compared to an ensemble of CLM5.0 (Community Land Model) simulations, at Trail Valley Creek, Northwest Territories, Canada. Snow micropenetrometer profiles allowed for snowpack density and thermal conductivity to be derived at higher vertical resolution (1.25 mm) and a larger sample size (n=1050) compared to traditional snowpit observations (3 cm vertical resolution; n=115). Comparing measurements with simulations shows CLM overestimated snow thermal conductivity by a factor of 3, leading to a cold bias in wintertime soil temperatures (RMSE=5.8 ∘C). Two different approaches were taken to reduce this bias: alternative parameterisations of snow thermal conductivity and the application of a correction factor. All the evaluated parameterisations of snow thermal conductivity improved simulations of wintertime soil temperatures, with that of Sturm et al. (1997) having the greatest impact (RMSE=2.5 ∘C). The required correction factor is strongly related to snow depth ( R2=0.77,RMSE=0.066) and thus differs between the two snow seasons, limiting the applicability of such an approach. Improving simulated snow properties and the corresponding heat flux is important, as wintertime soil temperatures are an important control on subnivean soil respiration and hence impact Arctic winter carbon fluxes and budgets. |
format |
Article in Journal/Newspaper |
author |
Dutch, Victoria R. Rutter, Nick Wake, Leanne Sandells, Melody Derksen, Chris Walker, Branden Hould Gosselin, Gabriel Sonnentag, Oliver Essery, Richard Kelly, Richard Marsh, Phillip King, Joshua Boike, Julia |
author_facet |
Dutch, Victoria R. Rutter, Nick Wake, Leanne Sandells, Melody Derksen, Chris Walker, Branden Hould Gosselin, Gabriel Sonnentag, Oliver Essery, Richard Kelly, Richard Marsh, Phillip King, Joshua Boike, Julia |
author_sort |
Dutch, Victoria R. |
title |
Impact of measured and simulated tundra snowpack properties on heat transfer |
title_short |
Impact of measured and simulated tundra snowpack properties on heat transfer |
title_full |
Impact of measured and simulated tundra snowpack properties on heat transfer |
title_fullStr |
Impact of measured and simulated tundra snowpack properties on heat transfer |
title_full_unstemmed |
Impact of measured and simulated tundra snowpack properties on heat transfer |
title_sort |
impact of measured and simulated tundra snowpack properties on heat transfer |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/tc-16-4201-2022 https://noa.gwlb.de/receive/cop_mods_00063115 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00062249/tc-16-4201-2022.pdf https://tc.copernicus.org/articles/16/4201/2022/tc-16-4201-2022.pdf |
long_lat |
ENVELOPE(162.967,162.967,-71.050,-71.050) ENVELOPE(-133.415,-133.415,68.772,68.772) ENVELOPE(-138.324,-138.324,63.326,63.326) |
geographic |
Arctic Canada Northwest Territories Sturm Trail Valley Creek Valley Creek |
geographic_facet |
Arctic Canada Northwest Territories Sturm Trail Valley Creek Valley Creek |
genre |
Arctic Northwest Territories The Cryosphere Tundra |
genre_facet |
Arctic Northwest Territories The Cryosphere Tundra |
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-16-4201-2022 https://noa.gwlb.de/receive/cop_mods_00063115 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00062249/tc-16-4201-2022.pdf https://tc.copernicus.org/articles/16/4201/2022/tc-16-4201-2022.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/tc-16-4201-2022 |
container_title |
The Cryosphere |
container_volume |
16 |
container_issue |
10 |
container_start_page |
4201 |
op_container_end_page |
4222 |
_version_ |
1766339895266115584 |