Spatio-temporal variability of polynya dynamics and ice production in the Laptev Sea between the winters of 1979/80 and 2007/08
Polynyas in the Laptev Sea are examined with respect to recurrence and interannual wintertime ice production.We use a polynya classification method based on passive microwave satellite data to derive daily polynya area from long-term sea-ice concentrations. This provides insight into the spatial and...
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Norwegian Polar Institute
2011
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Online Access: | https://oceanrep.geomar.de/id/eprint/26347/ https://oceanrep.geomar.de/id/eprint/26347/1/2011_Willmes_eral_PolRes_5971-20954-1-PB.pdf https://doi.org/10.3402/polar.v30i0.5971 |
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ftoceanrep:oai:oceanrep.geomar.de:26347 2023-05-15T17:07:07+02:00 Spatio-temporal variability of polynya dynamics and ice production in the Laptev Sea between the winters of 1979/80 and 2007/08 Willmes, Sascha Adams, Susanne Schröder, David Heinemann, Günther 2011 text https://oceanrep.geomar.de/id/eprint/26347/ https://oceanrep.geomar.de/id/eprint/26347/1/2011_Willmes_eral_PolRes_5971-20954-1-PB.pdf https://doi.org/10.3402/polar.v30i0.5971 en eng Norwegian Polar Institute https://oceanrep.geomar.de/id/eprint/26347/1/2011_Willmes_eral_PolRes_5971-20954-1-PB.pdf Willmes, S., Adams, S., Schröder, D. and Heinemann, G. (2011) Spatio-temporal variability of polynya dynamics and ice production in the Laptev Sea between the winters of 1979/80 and 2007/08. Polar Research, 30 . p. 5971. DOI 10.3402/polar.v30i0.5971 <https://doi.org/10.3402/polar.v30i0.5971>. doi:10.3402/polar.v30i0.5971 cc_by_nc Article PeerReviewed 2011 ftoceanrep https://doi.org/10.3402/polar.v30i0.5971 2023-04-07T15:15:41Z Polynyas in the Laptev Sea are examined with respect to recurrence and interannual wintertime ice production.We use a polynya classification method based on passive microwave satellite data to derive daily polynya area from long-term sea-ice concentrations. This provides insight into the spatial and temporal variability of open-water and thin-ice regions on the Laptev Sea Shelf. Using thermal infrared satellite data to derive an empirical thin-ice distribution within the thickness range from 0 to 20 cm, we calculate daily average surface heat loss and the resulting wintertime ice formation within the Laptev Sea polynyas between 1979 and 2008 using reanalysis data supplied by the National Centers for Environmental Prediction, USA, as atmospheric forcing. Results indicate that previous studies significantly overestimate the contribution of polynyas to the ice production in the Laptev Sea. Average wintertime ice production in polynyas amounts to approximately 55 km3 ± 27% and is mostly determined by the polynya area, wind speed and associated large-scale circulation patterns. No trend in ice production could be detected in the period from 1979/80 to 2007/08. Article in Journal/Newspaper laptev Laptev Sea Polar Research Sea ice OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Laptev Sea Polar Research 30 1 5971 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Polynyas in the Laptev Sea are examined with respect to recurrence and interannual wintertime ice production.We use a polynya classification method based on passive microwave satellite data to derive daily polynya area from long-term sea-ice concentrations. This provides insight into the spatial and temporal variability of open-water and thin-ice regions on the Laptev Sea Shelf. Using thermal infrared satellite data to derive an empirical thin-ice distribution within the thickness range from 0 to 20 cm, we calculate daily average surface heat loss and the resulting wintertime ice formation within the Laptev Sea polynyas between 1979 and 2008 using reanalysis data supplied by the National Centers for Environmental Prediction, USA, as atmospheric forcing. Results indicate that previous studies significantly overestimate the contribution of polynyas to the ice production in the Laptev Sea. Average wintertime ice production in polynyas amounts to approximately 55 km3 ± 27% and is mostly determined by the polynya area, wind speed and associated large-scale circulation patterns. No trend in ice production could be detected in the period from 1979/80 to 2007/08. |
format |
Article in Journal/Newspaper |
author |
Willmes, Sascha Adams, Susanne Schröder, David Heinemann, Günther |
spellingShingle |
Willmes, Sascha Adams, Susanne Schröder, David Heinemann, Günther Spatio-temporal variability of polynya dynamics and ice production in the Laptev Sea between the winters of 1979/80 and 2007/08 |
author_facet |
Willmes, Sascha Adams, Susanne Schröder, David Heinemann, Günther |
author_sort |
Willmes, Sascha |
title |
Spatio-temporal variability of polynya dynamics and ice production in the Laptev Sea between the winters of 1979/80 and 2007/08 |
title_short |
Spatio-temporal variability of polynya dynamics and ice production in the Laptev Sea between the winters of 1979/80 and 2007/08 |
title_full |
Spatio-temporal variability of polynya dynamics and ice production in the Laptev Sea between the winters of 1979/80 and 2007/08 |
title_fullStr |
Spatio-temporal variability of polynya dynamics and ice production in the Laptev Sea between the winters of 1979/80 and 2007/08 |
title_full_unstemmed |
Spatio-temporal variability of polynya dynamics and ice production in the Laptev Sea between the winters of 1979/80 and 2007/08 |
title_sort |
spatio-temporal variability of polynya dynamics and ice production in the laptev sea between the winters of 1979/80 and 2007/08 |
publisher |
Norwegian Polar Institute |
publishDate |
2011 |
url |
https://oceanrep.geomar.de/id/eprint/26347/ https://oceanrep.geomar.de/id/eprint/26347/1/2011_Willmes_eral_PolRes_5971-20954-1-PB.pdf https://doi.org/10.3402/polar.v30i0.5971 |
geographic |
Laptev Sea |
geographic_facet |
Laptev Sea |
genre |
laptev Laptev Sea Polar Research Sea ice |
genre_facet |
laptev Laptev Sea Polar Research Sea ice |
op_relation |
https://oceanrep.geomar.de/id/eprint/26347/1/2011_Willmes_eral_PolRes_5971-20954-1-PB.pdf Willmes, S., Adams, S., Schröder, D. and Heinemann, G. (2011) Spatio-temporal variability of polynya dynamics and ice production in the Laptev Sea between the winters of 1979/80 and 2007/08. Polar Research, 30 . p. 5971. DOI 10.3402/polar.v30i0.5971 <https://doi.org/10.3402/polar.v30i0.5971>. doi:10.3402/polar.v30i0.5971 |
op_rights |
cc_by_nc |
op_doi |
https://doi.org/10.3402/polar.v30i0.5971 |
container_title |
Polar Research |
container_volume |
30 |
container_issue |
1 |
container_start_page |
5971 |
_version_ |
1766062335584108544 |