Effect of small-scale snow surface roughness on snow albedo and reflectance
The primary goal of this paper is to present a model of snow surface albedo accounting for small-scale surface roughness effects. The model is based on photon recollision probability, and it can be combined with existing bulk volume albedo models, such as Two-streAm Radiative TransfEr in Snow (TARTE...
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Online Access: | https://doi.org/10.5194/tc-15-793-2021 https://doaj.org/article/773767398c2a4896a43eed6edbaa3dac |
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ftdoajarticles:oai:doaj.org/article:773767398c2a4896a43eed6edbaa3dac 2023-05-15T18:32:27+02:00 Effect of small-scale snow surface roughness on snow albedo and reflectance T. Manninen K. Anttila E. Jääskeläinen A. Riihelä J. Peltoniemi P. Räisänen P. Lahtinen N. Siljamo L. Thölix O. Meinander A. Kontu H. Suokanerva R. Pirazzini J. Suomalainen T. Hakala S. Kaasalainen H. Kaartinen A. Kukko O. Hautecoeur J.-L. Roujean 2021-02-01T00:00:00Z https://doi.org/10.5194/tc-15-793-2021 https://doaj.org/article/773767398c2a4896a43eed6edbaa3dac EN eng Copernicus Publications https://tc.copernicus.org/articles/15/793/2021/tc-15-793-2021.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-15-793-2021 1994-0416 1994-0424 https://doaj.org/article/773767398c2a4896a43eed6edbaa3dac The Cryosphere, Vol 15, Pp 793-820 (2021) Environmental sciences GE1-350 Geology QE1-996.5 article 2021 ftdoajarticles https://doi.org/10.5194/tc-15-793-2021 2022-12-31T12:06:13Z The primary goal of this paper is to present a model of snow surface albedo accounting for small-scale surface roughness effects. The model is based on photon recollision probability, and it can be combined with existing bulk volume albedo models, such as Two-streAm Radiative TransfEr in Snow (TARTES). The model is fed with in situ measurements of surface roughness from plate profile and laser scanner data, and it is evaluated by comparing the computed albedos with observations. It provides closer results to empirical values than volume-scattering-based albedo simulations alone. The impact of surface roughness on albedo increases with the progress of the melting season and is larger for larger solar zenith angles. In absolute terms, small-scale surface roughness can decrease the total albedo by up to about 0.1. As regards the bidirectional reflectance factor (BRF), it is found that surface roughness increases backward scattering especially for large solar zenith angle values. Article in Journal/Newspaper The Cryosphere Directory of Open Access Journals: DOAJ Articles The Cryosphere 15 2 793 820 |
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 T. Manninen K. Anttila E. Jääskeläinen A. Riihelä J. Peltoniemi P. Räisänen P. Lahtinen N. Siljamo L. Thölix O. Meinander A. Kontu H. Suokanerva R. Pirazzini J. Suomalainen T. Hakala S. Kaasalainen H. Kaartinen A. Kukko O. Hautecoeur J.-L. Roujean Effect of small-scale snow surface roughness on snow albedo and reflectance |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
The primary goal of this paper is to present a model of snow surface albedo accounting for small-scale surface roughness effects. The model is based on photon recollision probability, and it can be combined with existing bulk volume albedo models, such as Two-streAm Radiative TransfEr in Snow (TARTES). The model is fed with in situ measurements of surface roughness from plate profile and laser scanner data, and it is evaluated by comparing the computed albedos with observations. It provides closer results to empirical values than volume-scattering-based albedo simulations alone. The impact of surface roughness on albedo increases with the progress of the melting season and is larger for larger solar zenith angles. In absolute terms, small-scale surface roughness can decrease the total albedo by up to about 0.1. As regards the bidirectional reflectance factor (BRF), it is found that surface roughness increases backward scattering especially for large solar zenith angle values. |
format |
Article in Journal/Newspaper |
author |
T. Manninen K. Anttila E. Jääskeläinen A. Riihelä J. Peltoniemi P. Räisänen P. Lahtinen N. Siljamo L. Thölix O. Meinander A. Kontu H. Suokanerva R. Pirazzini J. Suomalainen T. Hakala S. Kaasalainen H. Kaartinen A. Kukko O. Hautecoeur J.-L. Roujean |
author_facet |
T. Manninen K. Anttila E. Jääskeläinen A. Riihelä J. Peltoniemi P. Räisänen P. Lahtinen N. Siljamo L. Thölix O. Meinander A. Kontu H. Suokanerva R. Pirazzini J. Suomalainen T. Hakala S. Kaasalainen H. Kaartinen A. Kukko O. Hautecoeur J.-L. Roujean |
author_sort |
T. Manninen |
title |
Effect of small-scale snow surface roughness on snow albedo and reflectance |
title_short |
Effect of small-scale snow surface roughness on snow albedo and reflectance |
title_full |
Effect of small-scale snow surface roughness on snow albedo and reflectance |
title_fullStr |
Effect of small-scale snow surface roughness on snow albedo and reflectance |
title_full_unstemmed |
Effect of small-scale snow surface roughness on snow albedo and reflectance |
title_sort |
effect of small-scale snow surface roughness on snow albedo and reflectance |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/tc-15-793-2021 https://doaj.org/article/773767398c2a4896a43eed6edbaa3dac |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_source |
The Cryosphere, Vol 15, Pp 793-820 (2021) |
op_relation |
https://tc.copernicus.org/articles/15/793/2021/tc-15-793-2021.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-15-793-2021 1994-0416 1994-0424 https://doaj.org/article/773767398c2a4896a43eed6edbaa3dac |
op_doi |
https://doi.org/10.5194/tc-15-793-2021 |
container_title |
The Cryosphere |
container_volume |
15 |
container_issue |
2 |
container_start_page |
793 |
op_container_end_page |
820 |
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