TVC Array
Matlab Array of TVC Snowpit Data from "Impact of measured and simulated tundra snowpack properties on heat transfer" , Dutch et al. (2021). [DOI Pending]. Version 2.0. Code and other data at: https://github.com/V-Dutch/TVCSnowCLM Abstract Snowpack microstructure controls the transfer of he...
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Online Access: | https://dx.doi.org/10.6084/m9.figshare.16685041.v2 https://figshare.com/articles/dataset/TVC_Array_09_2021_zip/16685041/2 |
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ftdatacite:10.6084/m9.figshare.16685041.v2 2023-05-15T15:10:45+02:00 TVC Array Dutch, Victoria Rutter, Nick Wake, Leanne Derksen, Chris Sandells, Melody walker, Branden Hould Gosselin, Gabriel Sonnentag, Oliver Essery, Richard Kelly, Richard E J Marsh, Phillip King, Joshua 2022 https://dx.doi.org/10.6084/m9.figshare.16685041.v2 https://figshare.com/articles/dataset/TVC_Array_09_2021_zip/16685041/2 unknown figshare https://dx.doi.org/10.6084/m9.figshare.16685041 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Environmental Science Dataset dataset 2022 ftdatacite https://doi.org/10.6084/m9.figshare.16685041.v2 https://doi.org/10.6084/m9.figshare.16685041 2022-02-09T13:41:28Z Matlab Array of TVC Snowpit Data from "Impact of measured and simulated tundra snowpack properties on heat transfer" , Dutch et al. (2021). [DOI Pending]. Version 2.0. Code and other data at: https://github.com/V-Dutch/TVCSnowCLM Abstract Snowpack microstructure controls the transfer of heat to, and the temperature of, the underlying soils. In situ measurements of snow and soil properties from four field campaigns during two different 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 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 ℃). Bias-correction of the simulated thermal conductivity (relative to field measurements) improved simulated soil temperatures (RMSE = 2.1 ℃). Multiple linear regression shows the required correction factor is strongly related to snow depth (R 2 = 0.77, RMSE = 0.066) particularly early in the winter. The use of an alternative parameterisation of snow thermal conductivity also improved simulations of wintertime soil temperatures (RMSE = 2.5 ℃). Furthermore, CLM simulations did not adequately represent the observed high proportions of depth hoar. Addressing uncertainty in simulated snow properties and the corresponding heat flux is important, as wintertime soil temperatures act as a control on subnivean soil respiration, and hence impact Arctic winter carbon fluxes and budgets. Dataset Arctic Northwest Territories Tundra DataCite Metadata Store (German National Library of Science and Technology) Arctic Canada Northwest Territories Trail Valley Creek ENVELOPE(-133.415,-133.415,68.772,68.772) Valley Creek ENVELOPE(-138.324,-138.324,63.326,63.326) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Environmental Science |
spellingShingle |
Environmental Science Dutch, Victoria Rutter, Nick Wake, Leanne Derksen, Chris Sandells, Melody walker, Branden Hould Gosselin, Gabriel Sonnentag, Oliver Essery, Richard Kelly, Richard E J Marsh, Phillip King, Joshua TVC Array |
topic_facet |
Environmental Science |
description |
Matlab Array of TVC Snowpit Data from "Impact of measured and simulated tundra snowpack properties on heat transfer" , Dutch et al. (2021). [DOI Pending]. Version 2.0. Code and other data at: https://github.com/V-Dutch/TVCSnowCLM Abstract Snowpack microstructure controls the transfer of heat to, and the temperature of, the underlying soils. In situ measurements of snow and soil properties from four field campaigns during two different 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 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 ℃). Bias-correction of the simulated thermal conductivity (relative to field measurements) improved simulated soil temperatures (RMSE = 2.1 ℃). Multiple linear regression shows the required correction factor is strongly related to snow depth (R 2 = 0.77, RMSE = 0.066) particularly early in the winter. The use of an alternative parameterisation of snow thermal conductivity also improved simulations of wintertime soil temperatures (RMSE = 2.5 ℃). Furthermore, CLM simulations did not adequately represent the observed high proportions of depth hoar. Addressing uncertainty in simulated snow properties and the corresponding heat flux is important, as wintertime soil temperatures act as a control on subnivean soil respiration, and hence impact Arctic winter carbon fluxes and budgets. |
format |
Dataset |
author |
Dutch, Victoria Rutter, Nick Wake, Leanne Derksen, Chris Sandells, Melody walker, Branden Hould Gosselin, Gabriel Sonnentag, Oliver Essery, Richard Kelly, Richard E J Marsh, Phillip King, Joshua |
author_facet |
Dutch, Victoria Rutter, Nick Wake, Leanne Derksen, Chris Sandells, Melody walker, Branden Hould Gosselin, Gabriel Sonnentag, Oliver Essery, Richard Kelly, Richard E J Marsh, Phillip King, Joshua |
author_sort |
Dutch, Victoria |
title |
TVC Array |
title_short |
TVC Array |
title_full |
TVC Array |
title_fullStr |
TVC Array |
title_full_unstemmed |
TVC Array |
title_sort |
tvc array |
publisher |
figshare |
publishDate |
2022 |
url |
https://dx.doi.org/10.6084/m9.figshare.16685041.v2 https://figshare.com/articles/dataset/TVC_Array_09_2021_zip/16685041/2 |
long_lat |
ENVELOPE(-133.415,-133.415,68.772,68.772) ENVELOPE(-138.324,-138.324,63.326,63.326) |
geographic |
Arctic Canada Northwest Territories Trail Valley Creek Valley Creek |
geographic_facet |
Arctic Canada Northwest Territories Trail Valley Creek Valley Creek |
genre |
Arctic Northwest Territories Tundra |
genre_facet |
Arctic Northwest Territories Tundra |
op_relation |
https://dx.doi.org/10.6084/m9.figshare.16685041 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.16685041.v2 https://doi.org/10.6084/m9.figshare.16685041 |
_version_ |
1766341710309228544 |