Brief communication: Evaluation of multiple density-dependent empirical snow conductivity relationships in East Antarctica
Nine density-dependent empirical thermal conductivity relationships for firn were compared against data from three automatic weather stations at climatically different sites in East Antarctica (Dome A, Eagle, and LGB69). The empirical relationships were validated using a vertical, 1D thermal diffusi...
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Online Access: | https://doi.org/10.5194/tc-15-4201-2021 https://doaj.org/article/c87066b9d62a4102abdf89e9c46e4799 |
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ftdoajarticles:oai:doaj.org/article:c87066b9d62a4102abdf89e9c46e4799 2023-05-15T13:38:27+02:00 Brief communication: Evaluation of multiple density-dependent empirical snow conductivity relationships in East Antarctica M. Ding T. Zhang D. Yang I. Allison T. Dou C. Xiao 2021-09-01T00:00:00Z https://doi.org/10.5194/tc-15-4201-2021 https://doaj.org/article/c87066b9d62a4102abdf89e9c46e4799 EN eng Copernicus Publications https://tc.copernicus.org/articles/15/4201/2021/tc-15-4201-2021.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-15-4201-2021 1994-0416 1994-0424 https://doaj.org/article/c87066b9d62a4102abdf89e9c46e4799 The Cryosphere, Vol 15, Pp 4201-4206 (2021) Environmental sciences GE1-350 Geology QE1-996.5 article 2021 ftdoajarticles https://doi.org/10.5194/tc-15-4201-2021 2022-12-31T13:02:37Z Nine density-dependent empirical thermal conductivity relationships for firn were compared against data from three automatic weather stations at climatically different sites in East Antarctica (Dome A, Eagle, and LGB69). The empirical relationships were validated using a vertical, 1D thermal diffusion model and a phase-change-based firn diffusivity estimation method. The best relationships for the abovementioned sites were identified by comparing the modeled and observed firn temperature at a depth of 1 and 3 m, and from the mean heat conductivities over two depth intervals (1–3 and 3–10 m). Among the nine relationships, that proposed by Calonne et al. (2011) appeared to show the best performance. The density- and temperature-dependent relationship given in Calonne et al. (2019) does not show clear superiority over other density-dependent relationships. This study provides a useful reference for firn thermal conductivity parameterizations in land modeling or snow–air interaction studies on the Antarctica ice sheet. Article in Journal/Newspaper Antarc* Antarctica East Antarctica Ice Sheet The Cryosphere Directory of Open Access Journals: DOAJ Articles East Antarctica The Cryosphere 15 9 4201 4206 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 M. Ding T. Zhang D. Yang I. Allison T. Dou C. Xiao Brief communication: Evaluation of multiple density-dependent empirical snow conductivity relationships in East Antarctica |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
Nine density-dependent empirical thermal conductivity relationships for firn were compared against data from three automatic weather stations at climatically different sites in East Antarctica (Dome A, Eagle, and LGB69). The empirical relationships were validated using a vertical, 1D thermal diffusion model and a phase-change-based firn diffusivity estimation method. The best relationships for the abovementioned sites were identified by comparing the modeled and observed firn temperature at a depth of 1 and 3 m, and from the mean heat conductivities over two depth intervals (1–3 and 3–10 m). Among the nine relationships, that proposed by Calonne et al. (2011) appeared to show the best performance. The density- and temperature-dependent relationship given in Calonne et al. (2019) does not show clear superiority over other density-dependent relationships. This study provides a useful reference for firn thermal conductivity parameterizations in land modeling or snow–air interaction studies on the Antarctica ice sheet. |
format |
Article in Journal/Newspaper |
author |
M. Ding T. Zhang D. Yang I. Allison T. Dou C. Xiao |
author_facet |
M. Ding T. Zhang D. Yang I. Allison T. Dou C. Xiao |
author_sort |
M. Ding |
title |
Brief communication: Evaluation of multiple density-dependent empirical snow conductivity relationships in East Antarctica |
title_short |
Brief communication: Evaluation of multiple density-dependent empirical snow conductivity relationships in East Antarctica |
title_full |
Brief communication: Evaluation of multiple density-dependent empirical snow conductivity relationships in East Antarctica |
title_fullStr |
Brief communication: Evaluation of multiple density-dependent empirical snow conductivity relationships in East Antarctica |
title_full_unstemmed |
Brief communication: Evaluation of multiple density-dependent empirical snow conductivity relationships in East Antarctica |
title_sort |
brief communication: evaluation of multiple density-dependent empirical snow conductivity relationships in east antarctica |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/tc-15-4201-2021 https://doaj.org/article/c87066b9d62a4102abdf89e9c46e4799 |
geographic |
East Antarctica |
geographic_facet |
East Antarctica |
genre |
Antarc* Antarctica East Antarctica Ice Sheet The Cryosphere |
genre_facet |
Antarc* Antarctica East Antarctica Ice Sheet The Cryosphere |
op_source |
The Cryosphere, Vol 15, Pp 4201-4206 (2021) |
op_relation |
https://tc.copernicus.org/articles/15/4201/2021/tc-15-4201-2021.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-15-4201-2021 1994-0416 1994-0424 https://doaj.org/article/c87066b9d62a4102abdf89e9c46e4799 |
op_doi |
https://doi.org/10.5194/tc-15-4201-2021 |
container_title |
The Cryosphere |
container_volume |
15 |
container_issue |
9 |
container_start_page |
4201 |
op_container_end_page |
4206 |
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1766106528994033664 |