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...
Published in: | The Cryosphere |
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Online Access: | https://epic.awi.de/id/eprint/57359/ https://epic.awi.de/id/eprint/57359/1/tc-16-4201-2022.pdf https://doi.org/10.5194/tc-16-4201-2022 https://hdl.handle.net/10013/epic.50912461-f12a-4405-b5eb-83bb4ff1d58c |
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ftawi:oai:epic.awi.de:57359 2024-05-19T07:36:25+00:00 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 application/pdf https://epic.awi.de/id/eprint/57359/ https://epic.awi.de/id/eprint/57359/1/tc-16-4201-2022.pdf https://doi.org/10.5194/tc-16-4201-2022 https://hdl.handle.net/10013/epic.50912461-f12a-4405-b5eb-83bb4ff1d58c unknown https://epic.awi.de/id/eprint/57359/1/tc-16-4201-2022.pdf Dutch, V. R. , Rutter, N. , Wake, L. , Sandells, M. , Derksen, C. , Walker, B. , Hould Gosselin, G. , Sonnentag, O. , Essery, R. , Kelly, R. , Marsh, P. , King, J. and Boike, J. orcid:0000-0002-5875-2112 (2022) Impact of measured and simulated tundra snowpack properties on heat transfer , The Cryosphere, 16 (10), pp. 4201-4222 . doi:10.5194/tc-16-4201-2022 <https://doi.org/10.5194/tc-16-4201-2022> , hdl:10013/epic.50912461-f12a-4405-b5eb-83bb4ff1d58c EPIC3The Cryosphere, 16(10), pp. 4201-4222, ISSN: 1994-0424 Article isiRev 2022 ftawi https://doi.org/10.5194/tc-16-4201-2022 2024-04-23T23:38:07Z 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 () 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 Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) The Cryosphere 16 10 4201 4222 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
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 () 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 |
spellingShingle |
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 |
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 |
publishDate |
2022 |
url |
https://epic.awi.de/id/eprint/57359/ https://epic.awi.de/id/eprint/57359/1/tc-16-4201-2022.pdf https://doi.org/10.5194/tc-16-4201-2022 https://hdl.handle.net/10013/epic.50912461-f12a-4405-b5eb-83bb4ff1d58c |
genre |
Arctic Northwest Territories The Cryosphere Tundra |
genre_facet |
Arctic Northwest Territories The Cryosphere Tundra |
op_source |
EPIC3The Cryosphere, 16(10), pp. 4201-4222, ISSN: 1994-0424 |
op_relation |
https://epic.awi.de/id/eprint/57359/1/tc-16-4201-2022.pdf Dutch, V. R. , Rutter, N. , Wake, L. , Sandells, M. , Derksen, C. , Walker, B. , Hould Gosselin, G. , Sonnentag, O. , Essery, R. , Kelly, R. , Marsh, P. , King, J. and Boike, J. orcid:0000-0002-5875-2112 (2022) Impact of measured and simulated tundra snowpack properties on heat transfer , The Cryosphere, 16 (10), pp. 4201-4222 . doi:10.5194/tc-16-4201-2022 <https://doi.org/10.5194/tc-16-4201-2022> , hdl:10013/epic.50912461-f12a-4405-b5eb-83bb4ff1d58c |
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 |
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1799475536925294592 |