The interaction of ultraviolet light with Arctic sea ice during
ABSTRACT. The reflection, absorption and transmission of ultraviolet light by a sea-ice cover strongly impacts primary productivity, higher trophic components of the food web, and humans. Measurements of the incident irradiance at 305, 320, 340 and 380nm and of the photosynthetically active radiatio...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.634.7549 2023-05-15T13:11:24+02:00 The interaction of ultraviolet light with Arctic sea ice during Donald K. Perovich The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.634.7549 http://www.igsoc.org/annals/44/a44a162.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.634.7549 http://www.igsoc.org/annals/44/a44a162.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.igsoc.org/annals/44/a44a162.pdf text ftciteseerx 2016-01-08T15:39:01Z ABSTRACT. The reflection, absorption and transmission of ultraviolet light by a sea-ice cover strongly impacts primary productivity, higher trophic components of the food web, and humans. Measurements of the incident irradiance at 305, 320, 340 and 380nm and of the photosynthetically active radiation were made from April through September 1998 as part of the SHEBA (Surface Heat Budget of the Arctic Ocean program) field experiment in the Arctic Ocean. In addition, observations of snow depth and ice thickness were made at more than 100 sites encompassing a comprehensive range of conditions. The thickness observations were combined with a radiative transfer model to compute a time series of the ultraviolet light transmitted by the ice cover from April through September. Peak values of incident ultraviolet irradiance occurred in mid-June. Peak transmittance was later in the summer at the end of the melt season when the snow cover had completely melted, the ice had thinned and pond coverage was extensive. The fraction of the incident ultraviolet irradiance transmitted through the ice increased by several orders of magnitude as the melt season progressed. Ultraviolet transmittance was approximately a factor of ten greater for melt ponds than bare ice. Climate change has the potential to alter the amplitude and timing of the annual albedo cycle of sea ice. If the onset of melt occurs at increasingly earlier dates, ultraviolet transmittance will be significantly enhanced, with potentially deleterious biological impacts. Text albedo Arctic Arctic Ocean Climate change Sea ice Surface Heat Budget of the Arctic Ocean Unknown Arctic Arctic Ocean |
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Unknown |
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ftciteseerx |
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English |
description |
ABSTRACT. The reflection, absorption and transmission of ultraviolet light by a sea-ice cover strongly impacts primary productivity, higher trophic components of the food web, and humans. Measurements of the incident irradiance at 305, 320, 340 and 380nm and of the photosynthetically active radiation were made from April through September 1998 as part of the SHEBA (Surface Heat Budget of the Arctic Ocean program) field experiment in the Arctic Ocean. In addition, observations of snow depth and ice thickness were made at more than 100 sites encompassing a comprehensive range of conditions. The thickness observations were combined with a radiative transfer model to compute a time series of the ultraviolet light transmitted by the ice cover from April through September. Peak values of incident ultraviolet irradiance occurred in mid-June. Peak transmittance was later in the summer at the end of the melt season when the snow cover had completely melted, the ice had thinned and pond coverage was extensive. The fraction of the incident ultraviolet irradiance transmitted through the ice increased by several orders of magnitude as the melt season progressed. Ultraviolet transmittance was approximately a factor of ten greater for melt ponds than bare ice. Climate change has the potential to alter the amplitude and timing of the annual albedo cycle of sea ice. If the onset of melt occurs at increasingly earlier dates, ultraviolet transmittance will be significantly enhanced, with potentially deleterious biological impacts. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Donald K. Perovich |
spellingShingle |
Donald K. Perovich The interaction of ultraviolet light with Arctic sea ice during |
author_facet |
Donald K. Perovich |
author_sort |
Donald K. Perovich |
title |
The interaction of ultraviolet light with Arctic sea ice during |
title_short |
The interaction of ultraviolet light with Arctic sea ice during |
title_full |
The interaction of ultraviolet light with Arctic sea ice during |
title_fullStr |
The interaction of ultraviolet light with Arctic sea ice during |
title_full_unstemmed |
The interaction of ultraviolet light with Arctic sea ice during |
title_sort |
interaction of ultraviolet light with arctic sea ice during |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.634.7549 http://www.igsoc.org/annals/44/a44a162.pdf |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
albedo Arctic Arctic Ocean Climate change Sea ice Surface Heat Budget of the Arctic Ocean |
genre_facet |
albedo Arctic Arctic Ocean Climate change Sea ice Surface Heat Budget of the Arctic Ocean |
op_source |
http://www.igsoc.org/annals/44/a44a162.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.634.7549 http://www.igsoc.org/annals/44/a44a162.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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