Spectral albedo and transmittance of thin young Arctic sea ice
Spectral albedo and transmittance in the range 400–900nm were measured on three separate dates on less than 15 cm thick new Arctic sea ice growing on Kongsfjorden, Svalbard at 78:9°N, 11:9°E. Inherent optical properties, including absorption coefficients of particulate and dissolved material, were o...
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ftunivbergen:oai:bora.uib.no:1956/12742 2023-05-15T13:10:35+02:00 Spectral albedo and transmittance of thin young Arctic sea ice Taskjelle, Torbjørn Hudson, Stephen R. Granskog, Mats A. Nicolaus, Marcel Lei, Ruibo Gerland, Sebastian Stamnes, Jakob J. Hamre, Børge 2016-07-14T15:15:34Z application/pdf https://hdl.handle.net/1956/12742 https://doi.org/10.1002/2015jc011254 eng eng Wiley Norges forskningsråd: 221961 urn:issn:2169-9291 https://hdl.handle.net/1956/12742 https://doi.org/10.1002/2015jc011254 cristin:1316788 Attribution CC BY-NC-ND http://creativecommons.org/licenses/by-nc-nd/4.0/ Copyright 2015 The Authors VDP::Matematikk og naturvitenskap: 400::Fysikk: 430 VDP::Mathematics and natural scienses: 400::Physics: 430 Peer reviewed Journal article 2016 ftunivbergen https://doi.org/10.1002/2015jc011254 2023-03-14T17:41:20Z Spectral albedo and transmittance in the range 400–900nm were measured on three separate dates on less than 15 cm thick new Arctic sea ice growing on Kongsfjorden, Svalbard at 78:9°N, 11:9°E. Inherent optical properties, including absorption coefficients of particulate and dissolved material, were obtained from ice samples and fed into a radiative transfer model, which was used to analyze spectral albedo and transmittance and to study the influence of clouds and snow on these. Integrated albedo and transmittance for photosynthetically active radiation (400–900 nm) were in the range 0.17–0.21 and 0.77– 0.86, respectively. The average albedo and transmittance of the total solar radiation energy were 0.16 and 0.51, respectively. Values inferred from the model indicate that the ice contained possibly up to 40% brine and only 0.6% bubbles. Angular redistribution of solar radiation by clouds and snow was found to influence both the wavelength-integrated value and the spectral shape of albedo and transmittance. In particular, local peaks and depressions in the spectral albedo and spectral transmittance were found for wavelengths within atmospheric absorption bands. Simulated and measured transmittance spectra were within 5% for most of the wavelength range, but deviated up to 25% in the vicinity of 800 nm, indicating the need for more optical laboratory measurements of pure ice, or improved modeling of brine optical properties in this near-infrared wavelength region. publishedVersion Article in Journal/Newspaper albedo Arctic Kongsfjord* Kongsfjorden Sea ice Svalbard University of Bergen: Bergen Open Research Archive (BORA-UiB) Arctic Svalbard Journal of Geophysical Research: Oceans 121 1 540 553 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
topic |
VDP::Matematikk og naturvitenskap: 400::Fysikk: 430 VDP::Mathematics and natural scienses: 400::Physics: 430 |
spellingShingle |
VDP::Matematikk og naturvitenskap: 400::Fysikk: 430 VDP::Mathematics and natural scienses: 400::Physics: 430 Taskjelle, Torbjørn Hudson, Stephen R. Granskog, Mats A. Nicolaus, Marcel Lei, Ruibo Gerland, Sebastian Stamnes, Jakob J. Hamre, Børge Spectral albedo and transmittance of thin young Arctic sea ice |
topic_facet |
VDP::Matematikk og naturvitenskap: 400::Fysikk: 430 VDP::Mathematics and natural scienses: 400::Physics: 430 |
description |
Spectral albedo and transmittance in the range 400–900nm were measured on three separate dates on less than 15 cm thick new Arctic sea ice growing on Kongsfjorden, Svalbard at 78:9°N, 11:9°E. Inherent optical properties, including absorption coefficients of particulate and dissolved material, were obtained from ice samples and fed into a radiative transfer model, which was used to analyze spectral albedo and transmittance and to study the influence of clouds and snow on these. Integrated albedo and transmittance for photosynthetically active radiation (400–900 nm) were in the range 0.17–0.21 and 0.77– 0.86, respectively. The average albedo and transmittance of the total solar radiation energy were 0.16 and 0.51, respectively. Values inferred from the model indicate that the ice contained possibly up to 40% brine and only 0.6% bubbles. Angular redistribution of solar radiation by clouds and snow was found to influence both the wavelength-integrated value and the spectral shape of albedo and transmittance. In particular, local peaks and depressions in the spectral albedo and spectral transmittance were found for wavelengths within atmospheric absorption bands. Simulated and measured transmittance spectra were within 5% for most of the wavelength range, but deviated up to 25% in the vicinity of 800 nm, indicating the need for more optical laboratory measurements of pure ice, or improved modeling of brine optical properties in this near-infrared wavelength region. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Taskjelle, Torbjørn Hudson, Stephen R. Granskog, Mats A. Nicolaus, Marcel Lei, Ruibo Gerland, Sebastian Stamnes, Jakob J. Hamre, Børge |
author_facet |
Taskjelle, Torbjørn Hudson, Stephen R. Granskog, Mats A. Nicolaus, Marcel Lei, Ruibo Gerland, Sebastian Stamnes, Jakob J. Hamre, Børge |
author_sort |
Taskjelle, Torbjørn |
title |
Spectral albedo and transmittance of thin young Arctic sea ice |
title_short |
Spectral albedo and transmittance of thin young Arctic sea ice |
title_full |
Spectral albedo and transmittance of thin young Arctic sea ice |
title_fullStr |
Spectral albedo and transmittance of thin young Arctic sea ice |
title_full_unstemmed |
Spectral albedo and transmittance of thin young Arctic sea ice |
title_sort |
spectral albedo and transmittance of thin young arctic sea ice |
publisher |
Wiley |
publishDate |
2016 |
url |
https://hdl.handle.net/1956/12742 https://doi.org/10.1002/2015jc011254 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
albedo Arctic Kongsfjord* Kongsfjorden Sea ice Svalbard |
genre_facet |
albedo Arctic Kongsfjord* Kongsfjorden Sea ice Svalbard |
op_relation |
Norges forskningsråd: 221961 urn:issn:2169-9291 https://hdl.handle.net/1956/12742 https://doi.org/10.1002/2015jc011254 cristin:1316788 |
op_rights |
Attribution CC BY-NC-ND http://creativecommons.org/licenses/by-nc-nd/4.0/ Copyright 2015 The Authors |
op_doi |
https://doi.org/10.1002/2015jc011254 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
121 |
container_issue |
1 |
container_start_page |
540 |
op_container_end_page |
553 |
_version_ |
1766235483946352640 |