Surface and melt pond evolution on landfast first-year sea ice in the Canadian Arctic Archipelago
The evolution of landfast sea ice melt pond coverage, surface topography, and mass balance was studied in the Canadian Arctic during May-June 2011 and 2012, using a terrestrial laser scanner, snow and sea ice sampling, and surface meteorological characterization. Initial melt pond formation was not...
Published in: | Journal of Geophysical Research: Oceans |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2014
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Online Access: | https://hdl.handle.net/1983/bc4dd49d-2bbb-4703-8b52-255ebef3ca71 https://research-information.bris.ac.uk/en/publications/bc4dd49d-2bbb-4703-8b52-255ebef3ca71 https://doi.org/10.1002/2013JC009617 http://www.scopus.com/inward/record.url?scp=84902765181&partnerID=8YFLogxK |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/bc4dd49d-2bbb-4703-8b52-255ebef3ca71 2024-02-11T09:59:22+01:00 Surface and melt pond evolution on landfast first-year sea ice in the Canadian Arctic Archipelago Landy, Jack Ehn, Jens Shields, Megan Barber, David 2014-05-05 https://hdl.handle.net/1983/bc4dd49d-2bbb-4703-8b52-255ebef3ca71 https://research-information.bris.ac.uk/en/publications/bc4dd49d-2bbb-4703-8b52-255ebef3ca71 https://doi.org/10.1002/2013JC009617 http://www.scopus.com/inward/record.url?scp=84902765181&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Landy , J , Ehn , J , Shields , M & Barber , D 2014 , ' Surface and melt pond evolution on landfast first-year sea ice in the Canadian Arctic Archipelago ' , Journal of Geophysical Research: Oceans , vol. 119 , no. 5 , pp. 3054-3075 . https://doi.org/10.1002/2013JC009617 landfast ice melt ponds sea ice thermodynamic evolution article 2014 ftubristolcris https://doi.org/10.1002/2013JC009617 2024-01-18T23:30:39Z The evolution of landfast sea ice melt pond coverage, surface topography, and mass balance was studied in the Canadian Arctic during May-June 2011 and 2012, using a terrestrial laser scanner, snow and sea ice sampling, and surface meteorological characterization. Initial melt pond formation was not limited to low-lying areas, rather ponds formed at almost all premelt elevations. The subsequent evolution of melt pond coverage varied considerably between the 2 years owing to four principle, temporally variable factors. First, the range in premelt topographic relief was 0.5 m greater in 2011 (rougher surface) than in 2012 (smoother surface), such that a seasonal maximum pond coverage of 60% and maximum hydraulic head of 204 mm were reached in 2011, versus 78% and 138 mm in 2012. A change in the meltwater balance (production minus drainage) caused the ponds to spread or recede over an area that was almost 90% larger in 2012 than in 2011. Second, modification of the premelt topography was observed during mid-June, due to preferential melting under certain drainage channels. Some of the lowest-lying premelt areas were subsequently elevated above these deepening channels and unexpectedly became drained later in the season. Third, ice interior temperatures remained 1-2°C colder later into June in 2012 than in 2011, even though the ice was 0.35 m thinner at melt onset, thereby delaying permeability increases in the ice that would allow vertical meltwater drainage to the ocean. Finally, surface melt was estimated to account for approximately 62% of the net radiative flux to the sea ice cover during the melt season. Key Points Sea ice surface mass and meltwater balance are measured using LiDAR Variations in melt pond coverage between 2 years and locations are analyzed Ice growth history and thermodynamic evolution control melt pond development Article in Journal/Newspaper Arctic Arctic Archipelago Arctic Canadian Arctic Archipelago Sea ice University of Bristol: Bristol Research Arctic Canadian Arctic Archipelago Journal of Geophysical Research: Oceans 119 5 3054 3075 |
institution |
Open Polar |
collection |
University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
topic |
landfast ice melt ponds sea ice thermodynamic evolution |
spellingShingle |
landfast ice melt ponds sea ice thermodynamic evolution Landy, Jack Ehn, Jens Shields, Megan Barber, David Surface and melt pond evolution on landfast first-year sea ice in the Canadian Arctic Archipelago |
topic_facet |
landfast ice melt ponds sea ice thermodynamic evolution |
description |
The evolution of landfast sea ice melt pond coverage, surface topography, and mass balance was studied in the Canadian Arctic during May-June 2011 and 2012, using a terrestrial laser scanner, snow and sea ice sampling, and surface meteorological characterization. Initial melt pond formation was not limited to low-lying areas, rather ponds formed at almost all premelt elevations. The subsequent evolution of melt pond coverage varied considerably between the 2 years owing to four principle, temporally variable factors. First, the range in premelt topographic relief was 0.5 m greater in 2011 (rougher surface) than in 2012 (smoother surface), such that a seasonal maximum pond coverage of 60% and maximum hydraulic head of 204 mm were reached in 2011, versus 78% and 138 mm in 2012. A change in the meltwater balance (production minus drainage) caused the ponds to spread or recede over an area that was almost 90% larger in 2012 than in 2011. Second, modification of the premelt topography was observed during mid-June, due to preferential melting under certain drainage channels. Some of the lowest-lying premelt areas were subsequently elevated above these deepening channels and unexpectedly became drained later in the season. Third, ice interior temperatures remained 1-2°C colder later into June in 2012 than in 2011, even though the ice was 0.35 m thinner at melt onset, thereby delaying permeability increases in the ice that would allow vertical meltwater drainage to the ocean. Finally, surface melt was estimated to account for approximately 62% of the net radiative flux to the sea ice cover during the melt season. Key Points Sea ice surface mass and meltwater balance are measured using LiDAR Variations in melt pond coverage between 2 years and locations are analyzed Ice growth history and thermodynamic evolution control melt pond development |
format |
Article in Journal/Newspaper |
author |
Landy, Jack Ehn, Jens Shields, Megan Barber, David |
author_facet |
Landy, Jack Ehn, Jens Shields, Megan Barber, David |
author_sort |
Landy, Jack |
title |
Surface and melt pond evolution on landfast first-year sea ice in the Canadian Arctic Archipelago |
title_short |
Surface and melt pond evolution on landfast first-year sea ice in the Canadian Arctic Archipelago |
title_full |
Surface and melt pond evolution on landfast first-year sea ice in the Canadian Arctic Archipelago |
title_fullStr |
Surface and melt pond evolution on landfast first-year sea ice in the Canadian Arctic Archipelago |
title_full_unstemmed |
Surface and melt pond evolution on landfast first-year sea ice in the Canadian Arctic Archipelago |
title_sort |
surface and melt pond evolution on landfast first-year sea ice in the canadian arctic archipelago |
publishDate |
2014 |
url |
https://hdl.handle.net/1983/bc4dd49d-2bbb-4703-8b52-255ebef3ca71 https://research-information.bris.ac.uk/en/publications/bc4dd49d-2bbb-4703-8b52-255ebef3ca71 https://doi.org/10.1002/2013JC009617 http://www.scopus.com/inward/record.url?scp=84902765181&partnerID=8YFLogxK |
geographic |
Arctic Canadian Arctic Archipelago |
geographic_facet |
Arctic Canadian Arctic Archipelago |
genre |
Arctic Arctic Archipelago Arctic Canadian Arctic Archipelago Sea ice |
genre_facet |
Arctic Arctic Archipelago Arctic Canadian Arctic Archipelago Sea ice |
op_source |
Landy , J , Ehn , J , Shields , M & Barber , D 2014 , ' Surface and melt pond evolution on landfast first-year sea ice in the Canadian Arctic Archipelago ' , Journal of Geophysical Research: Oceans , vol. 119 , no. 5 , pp. 3054-3075 . https://doi.org/10.1002/2013JC009617 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1002/2013JC009617 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
119 |
container_issue |
5 |
container_start_page |
3054 |
op_container_end_page |
3075 |
_version_ |
1790595307111710720 |