Physical and biogeochemical properties of rotten East Antarctic summer sea ice
Sea ice forms a barrier to the exchange of energy, gases, moisture and particles between the ocean and atmosphere around Antarctica. Ice temperature, salinity and the composition of ice crystals determine whether a particular slab of sea ice is habitable for microorganisms and permeable to exchanges...
Published in: | Journal of Geophysical Research: Oceans |
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2023
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Online Access: | https://doi.org/10.1029/2022JC018875 http://ecite.utas.edu.au/155790 |
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ftunivtasecite:oai:ecite.utas.edu.au:155790 2023-06-11T04:06:54+02:00 Physical and biogeochemical properties of rotten East Antarctic summer sea ice Corkill, M Moreau, S Janssens, J Fraser, AD Heil, P Tison, J-L Cougnon, EA Genovese, C Kimura, N Meiners, KM Wongpan, P Lannuzel, D 2023 application/pdf https://doi.org/10.1029/2022JC018875 http://ecite.utas.edu.au/155790 en eng Wiley-Blackwell Publishing, Inc. http://ecite.utas.edu.au/155790/1/155790 - Physical and biogeochemical properties.pdf http://dx.doi.org/10.1029/2022JC018875 http://purl.org/au-research/grants/arc/FT190100688 Corkill, M and Moreau, S and Janssens, J and Fraser, AD and Heil, P and Tison, J-L and Cougnon, EA and Genovese, C and Kimura, N and Meiners, KM and Wongpan, P and Lannuzel, D, Physical and biogeochemical properties of rotten East Antarctic summer sea ice, Journal of Geophysical Research: Oceans, 128, (2) Article e2022JC018875. ISSN 2169-9275 (2023) [Refereed Article] http://ecite.utas.edu.au/155790 Earth Sciences Oceanography Chemical oceanography Refereed Article PeerReviewed 2023 ftunivtasecite https://doi.org/10.1029/2022JC018875 2023-04-24T22:17:56Z Sea ice forms a barrier to the exchange of energy, gases, moisture and particles between the ocean and atmosphere around Antarctica. Ice temperature, salinity and the composition of ice crystals determine whether a particular slab of sea ice is habitable for microorganisms and permeable to exchanges between the ocean and atmosphere, allowing, for example, carbon dioxide (CO 2 ) from the atmosphere to be absorbed or outgassed by the ocean. Spring sea ice can have high concentrations of algae and absorb atmospheric CO 2 . In the summer of 20162017 off East Antarctica, we found decayed and porous granular ice layers in the interior of the ice column, which showed high algal pigment concentrations. The maximum chlorophyll a observed in the interior of the ice column was 67.7μg/L in a 24% porous granular ice layer between 0.8 and 0.9m depth in 1.7m thick ice, compared to an overall mean sea-ice chlorophyll a ( one standard deviation) of 13.521.8μg/L. We also found extensive surface melting, with instances of snow meltwater apparently percolating through the ice, as well as impermeable superimposed ice layers that had refrozen along with melt ponds on top of the ice. With future warming, the structures we describe here could occur earlier and/or become more persistent, meaning that sea ice would be more often characterized by patchy permeability and interior ice algal accumulations. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Sea ice eCite UTAS (University of Tasmania) Antarctic East Antarctica Rotten ENVELOPE(-53.417,-53.417,68.867,68.867) Journal of Geophysical Research: Oceans 128 2 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Oceanography Chemical oceanography |
spellingShingle |
Earth Sciences Oceanography Chemical oceanography Corkill, M Moreau, S Janssens, J Fraser, AD Heil, P Tison, J-L Cougnon, EA Genovese, C Kimura, N Meiners, KM Wongpan, P Lannuzel, D Physical and biogeochemical properties of rotten East Antarctic summer sea ice |
topic_facet |
Earth Sciences Oceanography Chemical oceanography |
description |
Sea ice forms a barrier to the exchange of energy, gases, moisture and particles between the ocean and atmosphere around Antarctica. Ice temperature, salinity and the composition of ice crystals determine whether a particular slab of sea ice is habitable for microorganisms and permeable to exchanges between the ocean and atmosphere, allowing, for example, carbon dioxide (CO 2 ) from the atmosphere to be absorbed or outgassed by the ocean. Spring sea ice can have high concentrations of algae and absorb atmospheric CO 2 . In the summer of 20162017 off East Antarctica, we found decayed and porous granular ice layers in the interior of the ice column, which showed high algal pigment concentrations. The maximum chlorophyll a observed in the interior of the ice column was 67.7μg/L in a 24% porous granular ice layer between 0.8 and 0.9m depth in 1.7m thick ice, compared to an overall mean sea-ice chlorophyll a ( one standard deviation) of 13.521.8μg/L. We also found extensive surface melting, with instances of snow meltwater apparently percolating through the ice, as well as impermeable superimposed ice layers that had refrozen along with melt ponds on top of the ice. With future warming, the structures we describe here could occur earlier and/or become more persistent, meaning that sea ice would be more often characterized by patchy permeability and interior ice algal accumulations. |
format |
Article in Journal/Newspaper |
author |
Corkill, M Moreau, S Janssens, J Fraser, AD Heil, P Tison, J-L Cougnon, EA Genovese, C Kimura, N Meiners, KM Wongpan, P Lannuzel, D |
author_facet |
Corkill, M Moreau, S Janssens, J Fraser, AD Heil, P Tison, J-L Cougnon, EA Genovese, C Kimura, N Meiners, KM Wongpan, P Lannuzel, D |
author_sort |
Corkill, M |
title |
Physical and biogeochemical properties of rotten East Antarctic summer sea ice |
title_short |
Physical and biogeochemical properties of rotten East Antarctic summer sea ice |
title_full |
Physical and biogeochemical properties of rotten East Antarctic summer sea ice |
title_fullStr |
Physical and biogeochemical properties of rotten East Antarctic summer sea ice |
title_full_unstemmed |
Physical and biogeochemical properties of rotten East Antarctic summer sea ice |
title_sort |
physical and biogeochemical properties of rotten east antarctic summer sea ice |
publisher |
Wiley-Blackwell Publishing, Inc. |
publishDate |
2023 |
url |
https://doi.org/10.1029/2022JC018875 http://ecite.utas.edu.au/155790 |
long_lat |
ENVELOPE(-53.417,-53.417,68.867,68.867) |
geographic |
Antarctic East Antarctica Rotten |
geographic_facet |
Antarctic East Antarctica Rotten |
genre |
Antarc* Antarctic Antarctica East Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Sea ice |
op_relation |
http://ecite.utas.edu.au/155790/1/155790 - Physical and biogeochemical properties.pdf http://dx.doi.org/10.1029/2022JC018875 http://purl.org/au-research/grants/arc/FT190100688 Corkill, M and Moreau, S and Janssens, J and Fraser, AD and Heil, P and Tison, J-L and Cougnon, EA and Genovese, C and Kimura, N and Meiners, KM and Wongpan, P and Lannuzel, D, Physical and biogeochemical properties of rotten East Antarctic summer sea ice, Journal of Geophysical Research: Oceans, 128, (2) Article e2022JC018875. ISSN 2169-9275 (2023) [Refereed Article] http://ecite.utas.edu.au/155790 |
op_doi |
https://doi.org/10.1029/2022JC018875 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
128 |
container_issue |
2 |
_version_ |
1768379133009592320 |