Spectral albedo of seasonal snow during intensive melt period at Sodankylä, beyond the Arctic Circle
We have measured spectral albedo, as well as ancillary parameters, of seasonal European Arctic snow at Sodankylä, Finland (67°22' N, 26°39' E). The springtime intensive melt period was observed during the Snow Reflectance Transition Experiment (SNORTEX) in April 2009. The upwelling and dow...
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ftdoajarticles:oai:doaj.org/article:0d67b7829f9c485591980dfcf3c04375 2023-05-15T13:10:31+02:00 Spectral albedo of seasonal snow during intensive melt period at Sodankylä, beyond the Arctic Circle O. Meinander S. Kazadzis A. Arola A. Riihelä P. Räisänen R. Kivi A. Kontu R. Kouznetsov M. Sofiev J. Svensson H. Suokanerva V. Aaltonen T. Manninen J.-L. Roujean O. Hautecoeur 2013-04-01T00:00:00Z https://doi.org/10.5194/acp-13-3793-2013 https://doaj.org/article/0d67b7829f9c485591980dfcf3c04375 EN eng Copernicus Publications http://www.atmos-chem-phys.net/13/3793/2013/acp-13-3793-2013.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-13-3793-2013 1680-7316 1680-7324 https://doaj.org/article/0d67b7829f9c485591980dfcf3c04375 Atmospheric Chemistry and Physics, Vol 13, Iss 7, Pp 3793-3810 (2013) Physics QC1-999 Chemistry QD1-999 article 2013 ftdoajarticles https://doi.org/10.5194/acp-13-3793-2013 2022-12-31T08:26:51Z We have measured spectral albedo, as well as ancillary parameters, of seasonal European Arctic snow at Sodankylä, Finland (67°22' N, 26°39' E). The springtime intensive melt period was observed during the Snow Reflectance Transition Experiment (SNORTEX) in April 2009. The upwelling and downwelling spectral irradiance, measured at 290–550 nm with a double monochromator spectroradiometer, revealed albedo values of ~0.5–0.7 for the ultraviolet and visible range, both under clear sky and variable cloudiness. During the most intensive snowmelt period of four days, albedo decreased from 0.65 to 0.45 at 330 nm, and from 0.72 to 0.53 at 450 nm. In the literature, the UV and VIS albedo for clean snow are ~0.97–0.99, consistent with the extremely small absorption coefficient of ice in this spectral region. Our low albedo values were supported by two independent simultaneous broadband albedo measurements, and simulated albedo data. We explain the low albedo values to be due to (i) large snow grain sizes up to ~3 mm in diameter; (ii) meltwater surrounding the grains and increasing the effective grain size; (iii) absorption caused by impurities in the snow, with concentration of elemental carbon (black carbon) in snow of 87 ppb, and organic carbon 2894 ppb, at the time of albedo measurements. The high concentrations of carbon, detected by the thermal–optical method, were due to air masses originating from the Kola Peninsula, Russia, where mining and refining industries are located. Article in Journal/Newspaper albedo Arctic black carbon kola peninsula Sodankylä Directory of Open Access Journals: DOAJ Articles Arctic Kola Peninsula Sodankylä ENVELOPE(26.600,26.600,67.417,67.417) Atmospheric Chemistry and Physics 13 7 3793 3810 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 O. Meinander S. Kazadzis A. Arola A. Riihelä P. Räisänen R. Kivi A. Kontu R. Kouznetsov M. Sofiev J. Svensson H. Suokanerva V. Aaltonen T. Manninen J.-L. Roujean O. Hautecoeur Spectral albedo of seasonal snow during intensive melt period at Sodankylä, beyond the Arctic Circle |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
We have measured spectral albedo, as well as ancillary parameters, of seasonal European Arctic snow at Sodankylä, Finland (67°22' N, 26°39' E). The springtime intensive melt period was observed during the Snow Reflectance Transition Experiment (SNORTEX) in April 2009. The upwelling and downwelling spectral irradiance, measured at 290–550 nm with a double monochromator spectroradiometer, revealed albedo values of ~0.5–0.7 for the ultraviolet and visible range, both under clear sky and variable cloudiness. During the most intensive snowmelt period of four days, albedo decreased from 0.65 to 0.45 at 330 nm, and from 0.72 to 0.53 at 450 nm. In the literature, the UV and VIS albedo for clean snow are ~0.97–0.99, consistent with the extremely small absorption coefficient of ice in this spectral region. Our low albedo values were supported by two independent simultaneous broadband albedo measurements, and simulated albedo data. We explain the low albedo values to be due to (i) large snow grain sizes up to ~3 mm in diameter; (ii) meltwater surrounding the grains and increasing the effective grain size; (iii) absorption caused by impurities in the snow, with concentration of elemental carbon (black carbon) in snow of 87 ppb, and organic carbon 2894 ppb, at the time of albedo measurements. The high concentrations of carbon, detected by the thermal–optical method, were due to air masses originating from the Kola Peninsula, Russia, where mining and refining industries are located. |
format |
Article in Journal/Newspaper |
author |
O. Meinander S. Kazadzis A. Arola A. Riihelä P. Räisänen R. Kivi A. Kontu R. Kouznetsov M. Sofiev J. Svensson H. Suokanerva V. Aaltonen T. Manninen J.-L. Roujean O. Hautecoeur |
author_facet |
O. Meinander S. Kazadzis A. Arola A. Riihelä P. Räisänen R. Kivi A. Kontu R. Kouznetsov M. Sofiev J. Svensson H. Suokanerva V. Aaltonen T. Manninen J.-L. Roujean O. Hautecoeur |
author_sort |
O. Meinander |
title |
Spectral albedo of seasonal snow during intensive melt period at Sodankylä, beyond the Arctic Circle |
title_short |
Spectral albedo of seasonal snow during intensive melt period at Sodankylä, beyond the Arctic Circle |
title_full |
Spectral albedo of seasonal snow during intensive melt period at Sodankylä, beyond the Arctic Circle |
title_fullStr |
Spectral albedo of seasonal snow during intensive melt period at Sodankylä, beyond the Arctic Circle |
title_full_unstemmed |
Spectral albedo of seasonal snow during intensive melt period at Sodankylä, beyond the Arctic Circle |
title_sort |
spectral albedo of seasonal snow during intensive melt period at sodankylä, beyond the arctic circle |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/acp-13-3793-2013 https://doaj.org/article/0d67b7829f9c485591980dfcf3c04375 |
long_lat |
ENVELOPE(26.600,26.600,67.417,67.417) |
geographic |
Arctic Kola Peninsula Sodankylä |
geographic_facet |
Arctic Kola Peninsula Sodankylä |
genre |
albedo Arctic black carbon kola peninsula Sodankylä |
genre_facet |
albedo Arctic black carbon kola peninsula Sodankylä |
op_source |
Atmospheric Chemistry and Physics, Vol 13, Iss 7, Pp 3793-3810 (2013) |
op_relation |
http://www.atmos-chem-phys.net/13/3793/2013/acp-13-3793-2013.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-13-3793-2013 1680-7316 1680-7324 https://doaj.org/article/0d67b7829f9c485591980dfcf3c04375 |
op_doi |
https://doi.org/10.5194/acp-13-3793-2013 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
13 |
container_issue |
7 |
container_start_page |
3793 |
op_container_end_page |
3810 |
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1766232325185601536 |