Influence of light-absorbing particles on snow spectral irradiance profiles
International audience Abstract. Light-absorbing particles (LAPs) such as black carbon or mineral dust are some of the main drivers of snow radiative transfer. Small amounts of LAPs significantly increase snowpack absorption in the visible wavelengths where ice absorption is particularly weak, impac...
Published in: | The Cryosphere |
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ftunivsavoie:oai:HAL:meteo-03657938v1 2023-11-12T04:27:18+01:00 Influence of light-absorbing particles on snow spectral irradiance profiles Tuzet, François Dumont, Marie Arnaud, Laurent Voisin, Didier Lamare, Maxim Larue, Fanny Revuelto, Jesus Picard, Ghislain Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) ANR-16-CE01-0006,EBONI,Dépot, devenir et impact des impuretés absorbantes dans le manteau neigeux(2016) 2019 https://meteofrance.hal.science/meteo-03657938 https://meteofrance.hal.science/meteo-03657938/document https://meteofrance.hal.science/meteo-03657938/file/tc-13-2169-2019.pdf https://doi.org/10.5194/tc-13-2169-2019 en eng HAL CCSD Copernicus info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-13-2169-2019 meteo-03657938 https://meteofrance.hal.science/meteo-03657938 https://meteofrance.hal.science/meteo-03657938/document https://meteofrance.hal.science/meteo-03657938/file/tc-13-2169-2019.pdf doi:10.5194/tc-13-2169-2019 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://meteofrance.hal.science/meteo-03657938 The Cryosphere, 2019, 13 (8), pp.2169-2187. ⟨10.5194/tc-13-2169-2019⟩ [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2019 ftunivsavoie https://doi.org/10.5194/tc-13-2169-2019 2023-10-24T21:19:54Z International audience Abstract. Light-absorbing particles (LAPs) such as black carbon or mineral dust are some of the main drivers of snow radiative transfer. Small amounts of LAPs significantly increase snowpack absorption in the visible wavelengths where ice absorption is particularly weak, impacting the surface energy budget of snow-covered areas. However, linking measurements of LAP concentration in snow to their actual radiative impact is a challenging issue which is not fully resolved. In the present paper, we point out a new method based on spectral irradiance profile (SIP) measurements which makes it possible to identify the radiative impact of LAPs on visible light extinction in homogeneous layers of the snowpack. From this impact on light extinction it is possible to infer LAP concentrations present in each layer using radiative transfer theory. This study relies on a unique dataset composed of 26 spectral irradiance profile measurements in the wavelength range 350–950 nm with concomitant profile measurements of snow physical properties and LAP concentrations, collected in the Alps over two snow seasons in winter and spring conditions. For 55 homogeneous snow layers identified in our dataset, the concentrations retrieved from SIP measurements are compared to chemical measurements of LAP concentrations. A good correlation is observed for measured concentrations higher than 5 ng g−1 (r2=0.81) despite a clear positive bias. The potential causes of this bias are discussed, underlining a strong sensitivity of our method to LAP optical properties and to the relationship between snow microstructure and snow optical properties used in the theory. Additional uncertainties such as artefacts in the measurement technique for SIP and chemical contents along with LAP absorption efficiency may explain part of this bias. In addition, spectral information on LAP absorption can be retrieved from SIP measurements. We show that for layers containing a unique absorber, this absorber can be identified in some cases (e.g. ... Article in Journal/Newspaper The Cryosphere Université Savoie Mont Blanc: HAL The Cryosphere 13 8 2169 2187 |
institution |
Open Polar |
collection |
Université Savoie Mont Blanc: HAL |
op_collection_id |
ftunivsavoie |
language |
English |
topic |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences Tuzet, François Dumont, Marie Arnaud, Laurent Voisin, Didier Lamare, Maxim Larue, Fanny Revuelto, Jesus Picard, Ghislain Influence of light-absorbing particles on snow spectral irradiance profiles |
topic_facet |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience Abstract. Light-absorbing particles (LAPs) such as black carbon or mineral dust are some of the main drivers of snow radiative transfer. Small amounts of LAPs significantly increase snowpack absorption in the visible wavelengths where ice absorption is particularly weak, impacting the surface energy budget of snow-covered areas. However, linking measurements of LAP concentration in snow to their actual radiative impact is a challenging issue which is not fully resolved. In the present paper, we point out a new method based on spectral irradiance profile (SIP) measurements which makes it possible to identify the radiative impact of LAPs on visible light extinction in homogeneous layers of the snowpack. From this impact on light extinction it is possible to infer LAP concentrations present in each layer using radiative transfer theory. This study relies on a unique dataset composed of 26 spectral irradiance profile measurements in the wavelength range 350–950 nm with concomitant profile measurements of snow physical properties and LAP concentrations, collected in the Alps over two snow seasons in winter and spring conditions. For 55 homogeneous snow layers identified in our dataset, the concentrations retrieved from SIP measurements are compared to chemical measurements of LAP concentrations. A good correlation is observed for measured concentrations higher than 5 ng g−1 (r2=0.81) despite a clear positive bias. The potential causes of this bias are discussed, underlining a strong sensitivity of our method to LAP optical properties and to the relationship between snow microstructure and snow optical properties used in the theory. Additional uncertainties such as artefacts in the measurement technique for SIP and chemical contents along with LAP absorption efficiency may explain part of this bias. In addition, spectral information on LAP absorption can be retrieved from SIP measurements. We show that for layers containing a unique absorber, this absorber can be identified in some cases (e.g. ... |
author2 |
Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) ANR-16-CE01-0006,EBONI,Dépot, devenir et impact des impuretés absorbantes dans le manteau neigeux(2016) |
format |
Article in Journal/Newspaper |
author |
Tuzet, François Dumont, Marie Arnaud, Laurent Voisin, Didier Lamare, Maxim Larue, Fanny Revuelto, Jesus Picard, Ghislain |
author_facet |
Tuzet, François Dumont, Marie Arnaud, Laurent Voisin, Didier Lamare, Maxim Larue, Fanny Revuelto, Jesus Picard, Ghislain |
author_sort |
Tuzet, François |
title |
Influence of light-absorbing particles on snow spectral irradiance profiles |
title_short |
Influence of light-absorbing particles on snow spectral irradiance profiles |
title_full |
Influence of light-absorbing particles on snow spectral irradiance profiles |
title_fullStr |
Influence of light-absorbing particles on snow spectral irradiance profiles |
title_full_unstemmed |
Influence of light-absorbing particles on snow spectral irradiance profiles |
title_sort |
influence of light-absorbing particles on snow spectral irradiance profiles |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://meteofrance.hal.science/meteo-03657938 https://meteofrance.hal.science/meteo-03657938/document https://meteofrance.hal.science/meteo-03657938/file/tc-13-2169-2019.pdf https://doi.org/10.5194/tc-13-2169-2019 |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_source |
ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://meteofrance.hal.science/meteo-03657938 The Cryosphere, 2019, 13 (8), pp.2169-2187. ⟨10.5194/tc-13-2169-2019⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-13-2169-2019 meteo-03657938 https://meteofrance.hal.science/meteo-03657938 https://meteofrance.hal.science/meteo-03657938/document https://meteofrance.hal.science/meteo-03657938/file/tc-13-2169-2019.pdf doi:10.5194/tc-13-2169-2019 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/tc-13-2169-2019 |
container_title |
The Cryosphere |
container_volume |
13 |
container_issue |
8 |
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2169 |
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2187 |
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