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 an...
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Norwegian Polar Institute
2011
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ftdoajarticles:oai:doaj.org/article:98641ea4cd014787a0e094b68299e5a0 2023-05-15T17:07:08+02:00 Spatio-temporal variability of polynya dynamics and ice production in the Laptev Sea between the winters of 1979/80 and 2007/08 Sascha Willmes Susanne Adams David Schröder Günther Heinemann 2011-05-01T00:00:00Z https://doi.org/10.3402/polar.v30i0.5971 https://doaj.org/article/98641ea4cd014787a0e094b68299e5a0 EN eng Norwegian Polar Institute http://www.polarresearch.net/index.php/polar/article/view/5971/pdf_110 https://doaj.org/toc/0800-0395 https://doaj.org/toc/1751-8369 doi:10.3402/polar.v30i0.5971 0800-0395 1751-8369 https://doaj.org/article/98641ea4cd014787a0e094b68299e5a0 Polar Research, Vol 30, Iss 0, Pp 1-16 (2011) Polynya dynamics ice production sea-ice remote sensing Environmental sciences GE1-350 Oceanography GC1-1581 article 2011 ftdoajarticles https://doi.org/10.3402/polar.v30i0.5971 2022-12-30T21:43:52Z 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 Directory of Open Access Journals: DOAJ Articles Laptev Sea Polar Research 30 1 5971 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Polynya dynamics ice production sea-ice remote sensing Environmental sciences GE1-350 Oceanography GC1-1581 |
spellingShingle |
Polynya dynamics ice production sea-ice remote sensing Environmental sciences GE1-350 Oceanography GC1-1581 Sascha Willmes Susanne Adams David Schröder Günther Heinemann Spatio-temporal variability of polynya dynamics and ice production in the Laptev Sea between the winters of 1979/80 and 2007/08 |
topic_facet |
Polynya dynamics ice production sea-ice remote sensing Environmental sciences GE1-350 Oceanography GC1-1581 |
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 |
Sascha Willmes Susanne Adams David Schröder Günther Heinemann |
author_facet |
Sascha Willmes Susanne Adams David Schröder Günther Heinemann |
author_sort |
Sascha Willmes |
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://doi.org/10.3402/polar.v30i0.5971 https://doaj.org/article/98641ea4cd014787a0e094b68299e5a0 |
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_source |
Polar Research, Vol 30, Iss 0, Pp 1-16 (2011) |
op_relation |
http://www.polarresearch.net/index.php/polar/article/view/5971/pdf_110 https://doaj.org/toc/0800-0395 https://doaj.org/toc/1751-8369 doi:10.3402/polar.v30i0.5971 0800-0395 1751-8369 https://doaj.org/article/98641ea4cd014787a0e094b68299e5a0 |
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_ |
1766062376751202304 |