A multilayer physically based snowpack model simulating direct and indirect radiative impacts of light-absorbing impurities in snow
Light-absorbing impurities (LAIs) decrease snow albedo, increasing the amount of solar energy absorbed by the snowpack. Its most intuitive and direct impact is to accelerate snowmelt. Enhanced energy absorption in snow also modifies snow metamorphism, which can indirectly drive further variations of...
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ftdoajarticles:oai:doaj.org/article:e81bde0941ad4591917ca97b962295af 2023-05-15T18:32:26+02:00 A multilayer physically based snowpack model simulating direct and indirect radiative impacts of light-absorbing impurities in snow F. Tuzet M. Dumont M. Lafaysse G. Picard L. Arnaud D. Voisin Y. Lejeune L. Charrois P. Nabat S. Morin 2017-11-01T00:00:00Z https://doi.org/10.5194/tc-11-2633-2017 https://doaj.org/article/e81bde0941ad4591917ca97b962295af EN eng Copernicus Publications https://www.the-cryosphere.net/11/2633/2017/tc-11-2633-2017.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-11-2633-2017 1994-0416 1994-0424 https://doaj.org/article/e81bde0941ad4591917ca97b962295af The Cryosphere, Vol 11, Pp 2633-2653 (2017) Environmental sciences GE1-350 Geology QE1-996.5 article 2017 ftdoajarticles https://doi.org/10.5194/tc-11-2633-2017 2022-12-30T21:28:10Z Light-absorbing impurities (LAIs) decrease snow albedo, increasing the amount of solar energy absorbed by the snowpack. Its most intuitive and direct impact is to accelerate snowmelt. Enhanced energy absorption in snow also modifies snow metamorphism, which can indirectly drive further variations of snow albedo in the near-infrared part of the solar spectrum because of the evolution of the near-surface snow microstructure. New capabilities have been implemented in the detailed snowpack model SURFEX/ISBA-Crocus (referred to as Crocus) to account for impurities' deposition and evolution within the snowpack and their direct and indirect impacts. Once deposited, the model computes impurities' mass evolution until snow melts out, accounting for scavenging by meltwater. Taking advantage of the recent inclusion of the spectral radiative transfer model TARTES (Two-stream Analytical Radiative TransfEr in Snow model) in Crocus, the model explicitly represents the radiative impacts of light-absorbing impurities in snow. The model was evaluated at the Col de Porte experimental site (French Alps) during the 2013–2014 snow season against in situ standard snow measurements and spectral albedo measurements. In situ meteorological measurements were used to drive the snowpack model, except for aerosol deposition fluxes. Black carbon (BC) and dust deposition fluxes used to drive the model were extracted from simulations of the atmospheric model ALADIN-Climate. The model simulates snowpack evolution reasonably, providing similar performances to our reference Crocus version in terms of snow depth, snow water equivalent (SWE), near-surface specific surface area (SSA) and shortwave albedo. Since the reference empirical albedo scheme was calibrated at the Col de Porte, improvements were not expected to be significant in this study. We show that the deposition fluxes from the ALADIN-Climate model provide a reasonable estimate of the amount of light-absorbing impurities deposited on the snowpack except for extreme deposition events which ... Article in Journal/Newspaper The Cryosphere Directory of Open Access Journals: DOAJ Articles The Cryosphere 11 6 2633 2653 |
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 F. Tuzet M. Dumont M. Lafaysse G. Picard L. Arnaud D. Voisin Y. Lejeune L. Charrois P. Nabat S. Morin A multilayer physically based snowpack model simulating direct and indirect radiative impacts of light-absorbing impurities in snow |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
Light-absorbing impurities (LAIs) decrease snow albedo, increasing the amount of solar energy absorbed by the snowpack. Its most intuitive and direct impact is to accelerate snowmelt. Enhanced energy absorption in snow also modifies snow metamorphism, which can indirectly drive further variations of snow albedo in the near-infrared part of the solar spectrum because of the evolution of the near-surface snow microstructure. New capabilities have been implemented in the detailed snowpack model SURFEX/ISBA-Crocus (referred to as Crocus) to account for impurities' deposition and evolution within the snowpack and their direct and indirect impacts. Once deposited, the model computes impurities' mass evolution until snow melts out, accounting for scavenging by meltwater. Taking advantage of the recent inclusion of the spectral radiative transfer model TARTES (Two-stream Analytical Radiative TransfEr in Snow model) in Crocus, the model explicitly represents the radiative impacts of light-absorbing impurities in snow. The model was evaluated at the Col de Porte experimental site (French Alps) during the 2013–2014 snow season against in situ standard snow measurements and spectral albedo measurements. In situ meteorological measurements were used to drive the snowpack model, except for aerosol deposition fluxes. Black carbon (BC) and dust deposition fluxes used to drive the model were extracted from simulations of the atmospheric model ALADIN-Climate. The model simulates snowpack evolution reasonably, providing similar performances to our reference Crocus version in terms of snow depth, snow water equivalent (SWE), near-surface specific surface area (SSA) and shortwave albedo. Since the reference empirical albedo scheme was calibrated at the Col de Porte, improvements were not expected to be significant in this study. We show that the deposition fluxes from the ALADIN-Climate model provide a reasonable estimate of the amount of light-absorbing impurities deposited on the snowpack except for extreme deposition events which ... |
format |
Article in Journal/Newspaper |
author |
F. Tuzet M. Dumont M. Lafaysse G. Picard L. Arnaud D. Voisin Y. Lejeune L. Charrois P. Nabat S. Morin |
author_facet |
F. Tuzet M. Dumont M. Lafaysse G. Picard L. Arnaud D. Voisin Y. Lejeune L. Charrois P. Nabat S. Morin |
author_sort |
F. Tuzet |
title |
A multilayer physically based snowpack model simulating direct and indirect radiative impacts of light-absorbing impurities in snow |
title_short |
A multilayer physically based snowpack model simulating direct and indirect radiative impacts of light-absorbing impurities in snow |
title_full |
A multilayer physically based snowpack model simulating direct and indirect radiative impacts of light-absorbing impurities in snow |
title_fullStr |
A multilayer physically based snowpack model simulating direct and indirect radiative impacts of light-absorbing impurities in snow |
title_full_unstemmed |
A multilayer physically based snowpack model simulating direct and indirect radiative impacts of light-absorbing impurities in snow |
title_sort |
multilayer physically based snowpack model simulating direct and indirect radiative impacts of light-absorbing impurities in snow |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/tc-11-2633-2017 https://doaj.org/article/e81bde0941ad4591917ca97b962295af |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_source |
The Cryosphere, Vol 11, Pp 2633-2653 (2017) |
op_relation |
https://www.the-cryosphere.net/11/2633/2017/tc-11-2633-2017.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-11-2633-2017 1994-0416 1994-0424 https://doaj.org/article/e81bde0941ad4591917ca97b962295af |
op_doi |
https://doi.org/10.5194/tc-11-2633-2017 |
container_title |
The Cryosphere |
container_volume |
11 |
container_issue |
6 |
container_start_page |
2633 |
op_container_end_page |
2653 |
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1766216544350633984 |