Monitoring of snow surface near-infrared bidirectional reflectance factors with added light-absorbing particles
Broadband snow albedo can range from 0.3 to 0.9 depending on microphysical properties and light-absorbing particle (LAP) concentrations. Beyond the widely observed direct and visibly apparent effect of darkening snow, it is still unclear how LAPs influence snow albedo feedbacks. To investigate LAPs&...
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Copernicus Publications
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Online Access: | https://doi.org/10.5194/tc-13-1753-2019 https://www.the-cryosphere.net/13/1753/2019/tc-13-1753-2019.pdf https://doaj.org/article/10d15b5d957947efb1c9523bb278254e |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:10d15b5d957947efb1c9523bb278254e 2023-05-15T18:32:19+02:00 Monitoring of snow surface near-infrared bidirectional reflectance factors with added light-absorbing particles A. Schneider M. Flanner R. De Roo A. Adolph 2019-07-01 https://doi.org/10.5194/tc-13-1753-2019 https://www.the-cryosphere.net/13/1753/2019/tc-13-1753-2019.pdf https://doaj.org/article/10d15b5d957947efb1c9523bb278254e en eng Copernicus Publications doi:10.5194/tc-13-1753-2019 1994-0416 1994-0424 https://www.the-cryosphere.net/13/1753/2019/tc-13-1753-2019.pdf https://doaj.org/article/10d15b5d957947efb1c9523bb278254e undefined The Cryosphere, Vol 13, Pp 1753-1766 (2019) envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2019 fttriple https://doi.org/10.5194/tc-13-1753-2019 2023-01-22T19:23:46Z Broadband snow albedo can range from 0.3 to 0.9 depending on microphysical properties and light-absorbing particle (LAP) concentrations. Beyond the widely observed direct and visibly apparent effect of darkening snow, it is still unclear how LAPs influence snow albedo feedbacks. To investigate LAPs' indirect effect on snow albedo feedbacks, we developed and calibrated the Near-Infrared Emitting and Reflectance-Monitoring Dome (NERD) and monitored bidirectional reflectance factors (BRFs) hourly after depositing dust and black carbon (BC) particles onto experimental snow surfaces. After comparing snow infrared BRFs to snow specific surface areas (SSAs), we found that both measured and modeled snow infrared BRFs are correlated with snow SSA. These results, however, demonstrate a considerable uncertainty of ±10 m2 kg−1 in the determination of snow SSA from our BRF measurements. The nondestructive technique for snow SSA retrieval that we present here can be further developed for science applications that require rapid in situ snow SSA measurements. After adding large amounts of dust and BC to snow, we found more rapid decreasing of snow BRFs and SSAs in snow with added LAPs compared to natural (clean) snow but only during clear-sky conditions. These results suggest that deposition of LAPs onto snow can accelerate snow metamorphism via a net positive snow grain-size feedback. Article in Journal/Newspaper The Cryosphere Unknown The Cryosphere 13 6 1753 1766 |
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English |
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envir geo |
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envir geo A. Schneider M. Flanner R. De Roo A. Adolph Monitoring of snow surface near-infrared bidirectional reflectance factors with added light-absorbing particles |
topic_facet |
envir geo |
description |
Broadband snow albedo can range from 0.3 to 0.9 depending on microphysical properties and light-absorbing particle (LAP) concentrations. Beyond the widely observed direct and visibly apparent effect of darkening snow, it is still unclear how LAPs influence snow albedo feedbacks. To investigate LAPs' indirect effect on snow albedo feedbacks, we developed and calibrated the Near-Infrared Emitting and Reflectance-Monitoring Dome (NERD) and monitored bidirectional reflectance factors (BRFs) hourly after depositing dust and black carbon (BC) particles onto experimental snow surfaces. After comparing snow infrared BRFs to snow specific surface areas (SSAs), we found that both measured and modeled snow infrared BRFs are correlated with snow SSA. These results, however, demonstrate a considerable uncertainty of ±10 m2 kg−1 in the determination of snow SSA from our BRF measurements. The nondestructive technique for snow SSA retrieval that we present here can be further developed for science applications that require rapid in situ snow SSA measurements. After adding large amounts of dust and BC to snow, we found more rapid decreasing of snow BRFs and SSAs in snow with added LAPs compared to natural (clean) snow but only during clear-sky conditions. These results suggest that deposition of LAPs onto snow can accelerate snow metamorphism via a net positive snow grain-size feedback. |
format |
Article in Journal/Newspaper |
author |
A. Schneider M. Flanner R. De Roo A. Adolph |
author_facet |
A. Schneider M. Flanner R. De Roo A. Adolph |
author_sort |
A. Schneider |
title |
Monitoring of snow surface near-infrared bidirectional reflectance factors with added light-absorbing particles |
title_short |
Monitoring of snow surface near-infrared bidirectional reflectance factors with added light-absorbing particles |
title_full |
Monitoring of snow surface near-infrared bidirectional reflectance factors with added light-absorbing particles |
title_fullStr |
Monitoring of snow surface near-infrared bidirectional reflectance factors with added light-absorbing particles |
title_full_unstemmed |
Monitoring of snow surface near-infrared bidirectional reflectance factors with added light-absorbing particles |
title_sort |
monitoring of snow surface near-infrared bidirectional reflectance factors with added light-absorbing particles |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/tc-13-1753-2019 https://www.the-cryosphere.net/13/1753/2019/tc-13-1753-2019.pdf https://doaj.org/article/10d15b5d957947efb1c9523bb278254e |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_source |
The Cryosphere, Vol 13, Pp 1753-1766 (2019) |
op_relation |
doi:10.5194/tc-13-1753-2019 1994-0416 1994-0424 https://www.the-cryosphere.net/13/1753/2019/tc-13-1753-2019.pdf https://doaj.org/article/10d15b5d957947efb1c9523bb278254e |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-13-1753-2019 |
container_title |
The Cryosphere |
container_volume |
13 |
container_issue |
6 |
container_start_page |
1753 |
op_container_end_page |
1766 |
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1766216425573187584 |