A module to convert spectral to narrowband snow albedo for use in climate models: SNOWBAL v1.2
International audience Snow albedo schemes in regional climate models often lack a sophisticated radiation penetration scheme and generally compute only a broadband albedo. Here, we present the Spectral-to-NarrOWBand ALbedo module (SNOWBAL, version 1.2) to couple effectively a spectral albedo model...
Published in: | Geoscientific Model Development |
---|---|
Main Authors: | , , , , |
Other Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2019
|
Subjects: | |
Online Access: | https://hal.science/hal-03094227 https://hal.science/hal-03094227/document https://hal.science/hal-03094227/file/vanDalum2019_Spectral_Narrowband_Albedo.pdf https://doi.org/10.5194/gmd-12-5157-2019 |
id |
ftutoulouse3hal:oai:HAL:hal-03094227v1 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
Université Toulouse III - Paul Sabatier: HAL-UPS |
op_collection_id |
ftutoulouse3hal |
language |
English |
topic |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment van Dalum, Christiaan, T van de Berg, Willem, Jan Libois, Quentin Picard, Ghislain van den Broeke, Michiel, R A module to convert spectral to narrowband snow albedo for use in climate models: SNOWBAL v1.2 |
topic_facet |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience Snow albedo schemes in regional climate models often lack a sophisticated radiation penetration scheme and generally compute only a broadband albedo. Here, we present the Spectral-to-NarrOWBand ALbedo module (SNOWBAL, version 1.2) to couple effectively a spectral albedo model with a narrowband radiation scheme. Specifically, the Two-streAm Radiative TransfEr in Snow model (TARTES) is coupled with the European Centre for Medium-Range Weather Forecasts (ECMWF) Integrated Forecast System (IFS), cycle 33R1, atmospheric radiation scheme based on the Rapid Radiation Transfer Model, which is embedded in the Regional Atmospheric Climate Model version 2.3p2 (RACMO2). This coupling allows to explicitly account for the effect of clouds, water vapor, snow impurities and snow metamorphism on albedo. Firstly, we present a narrowband albedo method to project the spectral albedos of TARTES onto the 14 spectral bands of the IFS shortwave radiation scheme using a representative wavelength (RW) for each band. Using TARTES and spectral downwelling surface irradiance derived with the DIScrete Ordinate Radiative Transfer atmospheric model, we show that RWs primarily depend on the solar zenith angle (SZA), cloud content and water vapor. Secondly, we compare the TARTES narrowband albedo, using offline RACMO2 results for south Greenland, with the broadband albedo parameterizations of Gardner and Sharp (2010), currently implemented in RACMO2, and the multi-layered parameterization of Kuipers Munneke et al. (2011, PKM). The actual absence of radiation penetration in RACMO2 leads on average to a higher albedo compared with TARTES narrowband albedo. Furthermore, large differences between the TARTES narrowband albedo and PKM and RACMO2 are observed for high SZA and clear-sky conditions, and after melt events when the snowpack is very inhomogeneous. This highlights the importance of accounting for spectral albedo and radiation penetration to simulate the energy budget of the Greenland ice sheet. |
author2 |
Institute for Marine and Atmospheric Research Utrecht (IMAU) Universiteit Utrecht / Utrecht University Utrecht Centre national de recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) 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 ) |
format |
Article in Journal/Newspaper |
author |
van Dalum, Christiaan, T van de Berg, Willem, Jan Libois, Quentin Picard, Ghislain van den Broeke, Michiel, R |
author_facet |
van Dalum, Christiaan, T van de Berg, Willem, Jan Libois, Quentin Picard, Ghislain van den Broeke, Michiel, R |
author_sort |
van Dalum, Christiaan, T |
title |
A module to convert spectral to narrowband snow albedo for use in climate models: SNOWBAL v1.2 |
title_short |
A module to convert spectral to narrowband snow albedo for use in climate models: SNOWBAL v1.2 |
title_full |
A module to convert spectral to narrowband snow albedo for use in climate models: SNOWBAL v1.2 |
title_fullStr |
A module to convert spectral to narrowband snow albedo for use in climate models: SNOWBAL v1.2 |
title_full_unstemmed |
A module to convert spectral to narrowband snow albedo for use in climate models: SNOWBAL v1.2 |
title_sort |
module to convert spectral to narrowband snow albedo for use in climate models: snowbal v1.2 |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.science/hal-03094227 https://hal.science/hal-03094227/document https://hal.science/hal-03094227/file/vanDalum2019_Spectral_Narrowband_Albedo.pdf https://doi.org/10.5194/gmd-12-5157-2019 |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
ISSN: 1991-9603 EISSN: 1991-959X Geoscientific Model Development https://hal.science/hal-03094227 Geoscientific Model Development, 2019, 12 (12), pp.5157 - 5175. ⟨10.5194/gmd-12-5157-2019⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/gmd-12-5157-2019 hal-03094227 https://hal.science/hal-03094227 https://hal.science/hal-03094227/document https://hal.science/hal-03094227/file/vanDalum2019_Spectral_Narrowband_Albedo.pdf doi:10.5194/gmd-12-5157-2019 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/gmd-12-5157-2019 |
container_title |
Geoscientific Model Development |
container_volume |
12 |
container_issue |
12 |
container_start_page |
5157 |
op_container_end_page |
5175 |
_version_ |
1810447227603124224 |
spelling |
ftutoulouse3hal:oai:HAL:hal-03094227v1 2024-09-15T18:09:39+00:00 A module to convert spectral to narrowband snow albedo for use in climate models: SNOWBAL v1.2 van Dalum, Christiaan, T van de Berg, Willem, Jan Libois, Quentin Picard, Ghislain van den Broeke, Michiel, R Institute for Marine and Atmospheric Research Utrecht (IMAU) Universiteit Utrecht / Utrecht University Utrecht Centre national de recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) 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 ) 2019-12-11 https://hal.science/hal-03094227 https://hal.science/hal-03094227/document https://hal.science/hal-03094227/file/vanDalum2019_Spectral_Narrowband_Albedo.pdf https://doi.org/10.5194/gmd-12-5157-2019 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/gmd-12-5157-2019 hal-03094227 https://hal.science/hal-03094227 https://hal.science/hal-03094227/document https://hal.science/hal-03094227/file/vanDalum2019_Spectral_Narrowband_Albedo.pdf doi:10.5194/gmd-12-5157-2019 info:eu-repo/semantics/OpenAccess ISSN: 1991-9603 EISSN: 1991-959X Geoscientific Model Development https://hal.science/hal-03094227 Geoscientific Model Development, 2019, 12 (12), pp.5157 - 5175. ⟨10.5194/gmd-12-5157-2019⟩ [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2019 ftutoulouse3hal https://doi.org/10.5194/gmd-12-5157-2019 2024-06-25T00:13:50Z International audience Snow albedo schemes in regional climate models often lack a sophisticated radiation penetration scheme and generally compute only a broadband albedo. Here, we present the Spectral-to-NarrOWBand ALbedo module (SNOWBAL, version 1.2) to couple effectively a spectral albedo model with a narrowband radiation scheme. Specifically, the Two-streAm Radiative TransfEr in Snow model (TARTES) is coupled with the European Centre for Medium-Range Weather Forecasts (ECMWF) Integrated Forecast System (IFS), cycle 33R1, atmospheric radiation scheme based on the Rapid Radiation Transfer Model, which is embedded in the Regional Atmospheric Climate Model version 2.3p2 (RACMO2). This coupling allows to explicitly account for the effect of clouds, water vapor, snow impurities and snow metamorphism on albedo. Firstly, we present a narrowband albedo method to project the spectral albedos of TARTES onto the 14 spectral bands of the IFS shortwave radiation scheme using a representative wavelength (RW) for each band. Using TARTES and spectral downwelling surface irradiance derived with the DIScrete Ordinate Radiative Transfer atmospheric model, we show that RWs primarily depend on the solar zenith angle (SZA), cloud content and water vapor. Secondly, we compare the TARTES narrowband albedo, using offline RACMO2 results for south Greenland, with the broadband albedo parameterizations of Gardner and Sharp (2010), currently implemented in RACMO2, and the multi-layered parameterization of Kuipers Munneke et al. (2011, PKM). The actual absence of radiation penetration in RACMO2 leads on average to a higher albedo compared with TARTES narrowband albedo. Furthermore, large differences between the TARTES narrowband albedo and PKM and RACMO2 are observed for high SZA and clear-sky conditions, and after melt events when the snowpack is very inhomogeneous. This highlights the importance of accounting for spectral albedo and radiation penetration to simulate the energy budget of the Greenland ice sheet. Article in Journal/Newspaper Greenland Ice Sheet Université Toulouse III - Paul Sabatier: HAL-UPS Geoscientific Model Development 12 12 5157 5175 |