Measurement of the specific surface area of snow using infrared reflectance in an integrating sphere at 1310 and 1550 nm
International audience Even though the specific surface area (SSA) and the snow area index (SAI) of snow are crucial variables to determine the chemical and climatic impact of the snow cover, few data are available on the subject. We propose here a novel method to measure snow SSA and SAI. It is bas...
Published in: | The Cryosphere |
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Online Access: | https://insu.hal.science/insu-00497930 https://insu.hal.science/insu-00497930/document https://insu.hal.science/insu-00497930/file/tc-3-167-2009.pdf https://doi.org/10.5194/tc-3-167-2009 |
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ftunivsavoie:oai:HAL:insu-00497930v1 2024-05-12T08:11:55+00:00 Measurement of the specific surface area of snow using infrared reflectance in an integrating sphere at 1310 and 1550 nm Gallet, Jean-Charles Domine, Florent Zender, C.S. Picard, Ghislain Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Department of Earth System Science Irvine (ESS) University of California Irvine (UC Irvine) University of California (UC)-University of California (UC) CSZ was supported by NSF ARC-0714088 and NASA NNX07AR23G CNRS-INSU 2009 https://insu.hal.science/insu-00497930 https://insu.hal.science/insu-00497930/document https://insu.hal.science/insu-00497930/file/tc-3-167-2009.pdf https://doi.org/10.5194/tc-3-167-2009 en eng HAL CCSD Copernicus info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-3-167-2009 insu-00497930 https://insu.hal.science/insu-00497930 https://insu.hal.science/insu-00497930/document https://insu.hal.science/insu-00497930/file/tc-3-167-2009.pdf doi:10.5194/tc-3-167-2009 info:eu-repo/semantics/OpenAccess ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://insu.hal.science/insu-00497930 The Cryosphere, 2009, 3 (2), pp.167-182. ⟨10.5194/tc-3-167-2009⟩ [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2009 ftunivsavoie https://doi.org/10.5194/tc-3-167-2009 2024-04-18T00:26:41Z International audience Even though the specific surface area (SSA) and the snow area index (SAI) of snow are crucial variables to determine the chemical and climatic impact of the snow cover, few data are available on the subject. We propose here a novel method to measure snow SSA and SAI. It is based on the measurement of the hemispherical infrared reflectance of snow samples using the DUFISSS instrument (DUal Frequency Integrating Sphere for Snow SSA measurement). DUFISSS uses the 1310 or 1550 nm radiation of laser diodes, an integrating sphere 15 cm in diameter, and InGaAs photodiodes. For SSA<60 m2 kg−1, we use the 1310 nm radiation, reflectance is between 15 and 50% and the accuracy of SSA determination is 10%. For SSA>60 m2 kg−1, snow is usually of low density (typically 30 to 100 kg m−3), resulting in insufficient optical depth and 1310 nm radiation reaches the bottom of the sample, causing artifacts. The 1550 nm radiation is therefore used for SSA>60 m2 kg−1. Reflectance is then in the range 5 to 12% and the accuracy on SSA is 12%. We propose empirical equations to determine SSA from reflectance at both wavelengths, with that for 1310 nm taking into account the snow density. DUFISSS has been used to measure the SSA of snow and the SAI of snowpacks in polar and Alpine regions. Article in Journal/Newspaper The Cryosphere Université Savoie Mont Blanc: HAL The Cryosphere 3 2 167 182 |
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Université Savoie Mont Blanc: HAL |
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ftunivsavoie |
language |
English |
topic |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Gallet, Jean-Charles Domine, Florent Zender, C.S. Picard, Ghislain Measurement of the specific surface area of snow using infrared reflectance in an integrating sphere at 1310 and 1550 nm |
topic_facet |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience Even though the specific surface area (SSA) and the snow area index (SAI) of snow are crucial variables to determine the chemical and climatic impact of the snow cover, few data are available on the subject. We propose here a novel method to measure snow SSA and SAI. It is based on the measurement of the hemispherical infrared reflectance of snow samples using the DUFISSS instrument (DUal Frequency Integrating Sphere for Snow SSA measurement). DUFISSS uses the 1310 or 1550 nm radiation of laser diodes, an integrating sphere 15 cm in diameter, and InGaAs photodiodes. For SSA<60 m2 kg−1, we use the 1310 nm radiation, reflectance is between 15 and 50% and the accuracy of SSA determination is 10%. For SSA>60 m2 kg−1, snow is usually of low density (typically 30 to 100 kg m−3), resulting in insufficient optical depth and 1310 nm radiation reaches the bottom of the sample, causing artifacts. The 1550 nm radiation is therefore used for SSA>60 m2 kg−1. Reflectance is then in the range 5 to 12% and the accuracy on SSA is 12%. We propose empirical equations to determine SSA from reflectance at both wavelengths, with that for 1310 nm taking into account the snow density. DUFISSS has been used to measure the SSA of snow and the SAI of snowpacks in polar and Alpine regions. |
author2 |
Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Department of Earth System Science Irvine (ESS) University of California Irvine (UC Irvine) University of California (UC)-University of California (UC) CSZ was supported by NSF ARC-0714088 and NASA NNX07AR23G CNRS-INSU |
format |
Article in Journal/Newspaper |
author |
Gallet, Jean-Charles Domine, Florent Zender, C.S. Picard, Ghislain |
author_facet |
Gallet, Jean-Charles Domine, Florent Zender, C.S. Picard, Ghislain |
author_sort |
Gallet, Jean-Charles |
title |
Measurement of the specific surface area of snow using infrared reflectance in an integrating sphere at 1310 and 1550 nm |
title_short |
Measurement of the specific surface area of snow using infrared reflectance in an integrating sphere at 1310 and 1550 nm |
title_full |
Measurement of the specific surface area of snow using infrared reflectance in an integrating sphere at 1310 and 1550 nm |
title_fullStr |
Measurement of the specific surface area of snow using infrared reflectance in an integrating sphere at 1310 and 1550 nm |
title_full_unstemmed |
Measurement of the specific surface area of snow using infrared reflectance in an integrating sphere at 1310 and 1550 nm |
title_sort |
measurement of the specific surface area of snow using infrared reflectance in an integrating sphere at 1310 and 1550 nm |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://insu.hal.science/insu-00497930 https://insu.hal.science/insu-00497930/document https://insu.hal.science/insu-00497930/file/tc-3-167-2009.pdf https://doi.org/10.5194/tc-3-167-2009 |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_source |
ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://insu.hal.science/insu-00497930 The Cryosphere, 2009, 3 (2), pp.167-182. ⟨10.5194/tc-3-167-2009⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-3-167-2009 insu-00497930 https://insu.hal.science/insu-00497930 https://insu.hal.science/insu-00497930/document https://insu.hal.science/insu-00497930/file/tc-3-167-2009.pdf doi:10.5194/tc-3-167-2009 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/tc-3-167-2009 |
container_title |
The Cryosphere |
container_volume |
3 |
container_issue |
2 |
container_start_page |
167 |
op_container_end_page |
182 |
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