Influence of snow depth and surface flooding on light transmission through Antarctic pack ice
Snow on sea ice alters the properties of the underlying ice cover as well as associated physical and biological processes at the interfaces between atmosphere, sea ice, and ocean. The Antarctic snow cover persists during most of the year and contributes significantly to the sea-ice mass due to the w...
Published in: | Journal of Geophysical Research: Oceans |
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ftunivtasecite:oai:ecite.utas.edu.au:123616 2023-05-15T13:49:03+02:00 Influence of snow depth and surface flooding on light transmission through Antarctic pack ice Arndt, S Meiners, KM Ricker, R Krumpen, T Katlein, C Nicolaus, M 2017 application/pdf https://doi.org/10.1002/2016JC012325 http://ecite.utas.edu.au/123616 en eng Wiley-Blackwell Publishing Inc. http://ecite.utas.edu.au/123616/1/Arndtetal2017.pdf http://dx.doi.org/10.1002/2016JC012325 Arndt, S and Meiners, KM and Ricker, R and Krumpen, T and Katlein, C and Nicolaus, M, Influence of snow depth and surface flooding on light transmission through Antarctic pack ice, Journal of Geophysical Research: Oceans, 122, (3) pp. 2108-2119. ISSN 2169-9275 (2017) [Refereed Article] http://ecite.utas.edu.au/123616 Earth Sciences Geophysics Geophysics not elsewhere classified Refereed Article PeerReviewed 2017 ftunivtasecite https://doi.org/10.1002/2016JC012325 2019-12-13T22:22:22Z Snow on sea ice alters the properties of the underlying ice cover as well as associated physical and biological processes at the interfaces between atmosphere, sea ice, and ocean. The Antarctic snow cover persists during most of the year and contributes significantly to the sea-ice mass due to the widespread surface flooding and related snow-ice formation. Snow also enhances the sea-ice surface reflectivity of incoming shortwave radiation and determines therefore the amount of light being reflected, absorbed, and transmitted to the upper ocean. Here, we present results of a case study of spectral solar radiation measurements under Antarctic pack ice with an instrumented Remotely Operated Vehicle in the Weddell Sea in 2013. In order to identify the key variables controlling the spatial distribution of the under-ice light regime, we exploit under-ice optical measurements in combination with simultaneous characterization of surface properties, such as sea-ice thickness and snow depth. Our results reveal that the distribution of flooded and nonflooded sea-ice areas dominates the spatial scales of under-ice light variability for areas smaller than 100 m-by-100 m. However, the heterogeneous and highly metamorphous snow on Antarctic pack ice obscures a direct correlation between the under-ice light field and snow depth. Compared to the Arctic, light levels under Antarctic pack ice are extremely low during spring ( < 0.1%). This is mostly a result of the distinctly different dominant sea ice and snow properties with seasonal snow cover (including strong surface melt and summer melt ponds) in the Arctic and a year-round snow cover and widespread surface flooding in the Southern Ocean. Article in Journal/Newspaper Antarc* Antarctic Arctic Sea ice Southern Ocean Weddell Sea eCite UTAS (University of Tasmania) Arctic Antarctic Southern Ocean The Antarctic Weddell Sea Weddell Journal of Geophysical Research: Oceans 122 3 2108 2119 |
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eCite UTAS (University of Tasmania) |
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ftunivtasecite |
language |
English |
topic |
Earth Sciences Geophysics Geophysics not elsewhere classified |
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Earth Sciences Geophysics Geophysics not elsewhere classified Arndt, S Meiners, KM Ricker, R Krumpen, T Katlein, C Nicolaus, M Influence of snow depth and surface flooding on light transmission through Antarctic pack ice |
topic_facet |
Earth Sciences Geophysics Geophysics not elsewhere classified |
description |
Snow on sea ice alters the properties of the underlying ice cover as well as associated physical and biological processes at the interfaces between atmosphere, sea ice, and ocean. The Antarctic snow cover persists during most of the year and contributes significantly to the sea-ice mass due to the widespread surface flooding and related snow-ice formation. Snow also enhances the sea-ice surface reflectivity of incoming shortwave radiation and determines therefore the amount of light being reflected, absorbed, and transmitted to the upper ocean. Here, we present results of a case study of spectral solar radiation measurements under Antarctic pack ice with an instrumented Remotely Operated Vehicle in the Weddell Sea in 2013. In order to identify the key variables controlling the spatial distribution of the under-ice light regime, we exploit under-ice optical measurements in combination with simultaneous characterization of surface properties, such as sea-ice thickness and snow depth. Our results reveal that the distribution of flooded and nonflooded sea-ice areas dominates the spatial scales of under-ice light variability for areas smaller than 100 m-by-100 m. However, the heterogeneous and highly metamorphous snow on Antarctic pack ice obscures a direct correlation between the under-ice light field and snow depth. Compared to the Arctic, light levels under Antarctic pack ice are extremely low during spring ( < 0.1%). This is mostly a result of the distinctly different dominant sea ice and snow properties with seasonal snow cover (including strong surface melt and summer melt ponds) in the Arctic and a year-round snow cover and widespread surface flooding in the Southern Ocean. |
format |
Article in Journal/Newspaper |
author |
Arndt, S Meiners, KM Ricker, R Krumpen, T Katlein, C Nicolaus, M |
author_facet |
Arndt, S Meiners, KM Ricker, R Krumpen, T Katlein, C Nicolaus, M |
author_sort |
Arndt, S |
title |
Influence of snow depth and surface flooding on light transmission through Antarctic pack ice |
title_short |
Influence of snow depth and surface flooding on light transmission through Antarctic pack ice |
title_full |
Influence of snow depth and surface flooding on light transmission through Antarctic pack ice |
title_fullStr |
Influence of snow depth and surface flooding on light transmission through Antarctic pack ice |
title_full_unstemmed |
Influence of snow depth and surface flooding on light transmission through Antarctic pack ice |
title_sort |
influence of snow depth and surface flooding on light transmission through antarctic pack ice |
publisher |
Wiley-Blackwell Publishing Inc. |
publishDate |
2017 |
url |
https://doi.org/10.1002/2016JC012325 http://ecite.utas.edu.au/123616 |
geographic |
Arctic Antarctic Southern Ocean The Antarctic Weddell Sea Weddell |
geographic_facet |
Arctic Antarctic Southern Ocean The Antarctic Weddell Sea Weddell |
genre |
Antarc* Antarctic Arctic Sea ice Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Arctic Sea ice Southern Ocean Weddell Sea |
op_relation |
http://ecite.utas.edu.au/123616/1/Arndtetal2017.pdf http://dx.doi.org/10.1002/2016JC012325 Arndt, S and Meiners, KM and Ricker, R and Krumpen, T and Katlein, C and Nicolaus, M, Influence of snow depth and surface flooding on light transmission through Antarctic pack ice, Journal of Geophysical Research: Oceans, 122, (3) pp. 2108-2119. ISSN 2169-9275 (2017) [Refereed Article] http://ecite.utas.edu.au/123616 |
op_doi |
https://doi.org/10.1002/2016JC012325 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
122 |
container_issue |
3 |
container_start_page |
2108 |
op_container_end_page |
2119 |
_version_ |
1766250743587667968 |