Episodic warming of near-bottom waters under the Arctic sea ice on the central Laptev Sea shelf
A multi-year mooring record (2007-2014) and satellite imagery highlight the strong temperature variability and unique hydrographic nature of the Laptev Sea. This Arctic shelf is a key region for river discharge and sea ice formation and export, and includes submarine permafrost and methane deposits,...
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ftawi:oai:epic.awi.de:39291 2023-05-15T14:27:38+02:00 Episodic warming of near-bottom waters under the Arctic sea ice on the central Laptev Sea shelf Janout, Markus Hölemann, Jens Juhls, Bennet Krumpen, Thomas Rabe, Benjamin Bauch, Dorothea Wegner, Carolyn Kassens, Heidemarie Timokhov, Leonid 2016-01-26 application/pdf https://epic.awi.de/id/eprint/39291/ https://epic.awi.de/id/eprint/39291/1/Janout_GRL2016_LaptevBottomWarming.pdf https://hdl.handle.net/10013/epic.46877 https://hdl.handle.net/10013/epic.46877.d001 unknown Wiley https://epic.awi.de/id/eprint/39291/1/Janout_GRL2016_LaptevBottomWarming.pdf https://hdl.handle.net/10013/epic.46877.d001 Janout, M. orcid:0000-0003-4908-2855 , Hölemann, J. orcid:0000-0001-5102-4086 , Juhls, B. , Krumpen, T. orcid:0000-0001-6234-8756 , Rabe, B. orcid:0000-0001-5794-9856 , Bauch, D. , Wegner, C. , Kassens, H. and Timokhov, L. (2016) Episodic warming of near-bottom waters under the Arctic sea ice on the central Laptev Sea shelf , Geophysical Research Letters . doi:10.1002/ 2015GL066565 , hdl:10013/epic.46877 EPIC3Geophysical Research Letters, Wiley, ISSN: 0094-8276 Article isiRev 2016 ftawi 2021-12-24T15:40:57Z A multi-year mooring record (2007-2014) and satellite imagery highlight the strong temperature variability and unique hydrographic nature of the Laptev Sea. This Arctic shelf is a key region for river discharge and sea ice formation and export, and includes submarine permafrost and methane deposits, which emphasizes the need to understand the thermal variability near the seafloor. Recent years were characterized by early ice retreat and a warming near-shore environment. However, warming was not observed on the deeper shelf until year-round under-ice measurements recorded unprecedented warm near-bottom waters of +0.6°C in winter 2012/2013, just after the Arctic sea ice extent featured a record minimum. In the Laptev Sea, early ice retreat in 2012 combined with Lena River heat and solar radiation produced anomalously warm summer surface waters, which were vertically mixed, trapped in the pycnocline, and subsequently transferred toward the bottom until the water column cooled when brine rejection eroded stratification. Article in Journal/Newspaper Arctic Arctic Ice laptev Laptev Sea lena river permafrost Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Laptev Sea |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
A multi-year mooring record (2007-2014) and satellite imagery highlight the strong temperature variability and unique hydrographic nature of the Laptev Sea. This Arctic shelf is a key region for river discharge and sea ice formation and export, and includes submarine permafrost and methane deposits, which emphasizes the need to understand the thermal variability near the seafloor. Recent years were characterized by early ice retreat and a warming near-shore environment. However, warming was not observed on the deeper shelf until year-round under-ice measurements recorded unprecedented warm near-bottom waters of +0.6°C in winter 2012/2013, just after the Arctic sea ice extent featured a record minimum. In the Laptev Sea, early ice retreat in 2012 combined with Lena River heat and solar radiation produced anomalously warm summer surface waters, which were vertically mixed, trapped in the pycnocline, and subsequently transferred toward the bottom until the water column cooled when brine rejection eroded stratification. |
format |
Article in Journal/Newspaper |
author |
Janout, Markus Hölemann, Jens Juhls, Bennet Krumpen, Thomas Rabe, Benjamin Bauch, Dorothea Wegner, Carolyn Kassens, Heidemarie Timokhov, Leonid |
spellingShingle |
Janout, Markus Hölemann, Jens Juhls, Bennet Krumpen, Thomas Rabe, Benjamin Bauch, Dorothea Wegner, Carolyn Kassens, Heidemarie Timokhov, Leonid Episodic warming of near-bottom waters under the Arctic sea ice on the central Laptev Sea shelf |
author_facet |
Janout, Markus Hölemann, Jens Juhls, Bennet Krumpen, Thomas Rabe, Benjamin Bauch, Dorothea Wegner, Carolyn Kassens, Heidemarie Timokhov, Leonid |
author_sort |
Janout, Markus |
title |
Episodic warming of near-bottom waters under the Arctic sea ice on the central Laptev Sea shelf |
title_short |
Episodic warming of near-bottom waters under the Arctic sea ice on the central Laptev Sea shelf |
title_full |
Episodic warming of near-bottom waters under the Arctic sea ice on the central Laptev Sea shelf |
title_fullStr |
Episodic warming of near-bottom waters under the Arctic sea ice on the central Laptev Sea shelf |
title_full_unstemmed |
Episodic warming of near-bottom waters under the Arctic sea ice on the central Laptev Sea shelf |
title_sort |
episodic warming of near-bottom waters under the arctic sea ice on the central laptev sea shelf |
publisher |
Wiley |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/39291/ https://epic.awi.de/id/eprint/39291/1/Janout_GRL2016_LaptevBottomWarming.pdf https://hdl.handle.net/10013/epic.46877 https://hdl.handle.net/10013/epic.46877.d001 |
geographic |
Arctic Laptev Sea |
geographic_facet |
Arctic Laptev Sea |
genre |
Arctic Arctic Ice laptev Laptev Sea lena river permafrost Sea ice |
genre_facet |
Arctic Arctic Ice laptev Laptev Sea lena river permafrost Sea ice |
op_source |
EPIC3Geophysical Research Letters, Wiley, ISSN: 0094-8276 |
op_relation |
https://epic.awi.de/id/eprint/39291/1/Janout_GRL2016_LaptevBottomWarming.pdf https://hdl.handle.net/10013/epic.46877.d001 Janout, M. orcid:0000-0003-4908-2855 , Hölemann, J. orcid:0000-0001-5102-4086 , Juhls, B. , Krumpen, T. orcid:0000-0001-6234-8756 , Rabe, B. orcid:0000-0001-5794-9856 , Bauch, D. , Wegner, C. , Kassens, H. and Timokhov, L. (2016) Episodic warming of near-bottom waters under the Arctic sea ice on the central Laptev Sea shelf , Geophysical Research Letters . doi:10.1002/ 2015GL066565 , hdl:10013/epic.46877 |
_version_ |
1766301456170745856 |