Winter sea ice export from the Laptev Sea preconditions the local summer sea ice cover and fast ice decay
Ice retreat in the eastern Eurasian Arctic is a consequence of atmospheric and oceanic processes and regional feedback mechanisms acting on the ice cover, both in winter and summer. A correct representation of these processes in numerical models is important, since it will improve predictions of sea...
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Online Access: | https://epic.awi.de/id/eprint/45736/ https://epic.awi.de/id/eprint/45736/1/tc-11-2383-2017.pdf https://www.the-cryosphere.net/11/2383/2017/ https://hdl.handle.net/10013/epic.51836 https://hdl.handle.net/10013/epic.51836.d001 |
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ftawi:oai:epic.awi.de:45736 2023-05-15T14:57:46+02:00 Winter sea ice export from the Laptev Sea preconditions the local summer sea ice cover and fast ice decay Itkin, Polona Krumpen, Thomas 2017-10-23 application/pdf https://epic.awi.de/id/eprint/45736/ https://epic.awi.de/id/eprint/45736/1/tc-11-2383-2017.pdf https://www.the-cryosphere.net/11/2383/2017/ https://hdl.handle.net/10013/epic.51836 https://hdl.handle.net/10013/epic.51836.d001 unknown Copernicus https://epic.awi.de/id/eprint/45736/1/tc-11-2383-2017.pdf https://hdl.handle.net/10013/epic.51836.d001 Itkin, P. and Krumpen, T. orcid:0000-0001-6234-8756 (2017) Winter sea ice export from the Laptev Sea preconditions the local summer sea ice cover and fast ice decay , The Cryosphere, 11 (5), pp. 2383-2391 . doi:10.5194/tc-11-2383-2017 <https://doi.org/10.5194/tc-11-2383-2017> , hdl:10013/epic.51836 EPIC3The Cryosphere, Copernicus, 11(5), pp. 2383-2391 Article isiRev 2017 ftawi https://doi.org/10.5194/tc-11-2383-2017 2021-12-24T15:43:23Z Ice retreat in the eastern Eurasian Arctic is a consequence of atmospheric and oceanic processes and regional feedback mechanisms acting on the ice cover, both in winter and summer. A correct representation of these processes in numerical models is important, since it will improve predictions of sea ice anomalies along the Northeast Passage and beyond. In this study, we highlight the importance of winter ice dynamics for local summer sea ice anomalies in thickness, volume and extent. By means of airborne sea ice thickness surveys made over pack ice areas in the south-eastern Laptev Sea, we show that years of offshore-directed sea ice transport have a thinning effect on the late-winter sea ice cover. To confirm the preconditioning effect of enhanced offshore advection in late winter on the summer sea ice cover, we perform a sensitivity study using a numerical model. Results verify that the preconditioning effect plays a bigger role for the regional ice extent. Furthermore, they indicate an increase in volume export from the Laptev Sea as a consequence of enhanced offshore advection, which has far-reaching consequences for the entire Arctic sea ice mass balance. Moreover we show that ice dynamics in winter not only preconditions local summer ice extent, but also accelerate fast-ice decay. Article in Journal/Newspaper Arctic laptev Laptev Sea Northeast Passage Sea ice The Cryosphere Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Laptev Sea The Cryosphere 11 5 2383 2391 |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Ice retreat in the eastern Eurasian Arctic is a consequence of atmospheric and oceanic processes and regional feedback mechanisms acting on the ice cover, both in winter and summer. A correct representation of these processes in numerical models is important, since it will improve predictions of sea ice anomalies along the Northeast Passage and beyond. In this study, we highlight the importance of winter ice dynamics for local summer sea ice anomalies in thickness, volume and extent. By means of airborne sea ice thickness surveys made over pack ice areas in the south-eastern Laptev Sea, we show that years of offshore-directed sea ice transport have a thinning effect on the late-winter sea ice cover. To confirm the preconditioning effect of enhanced offshore advection in late winter on the summer sea ice cover, we perform a sensitivity study using a numerical model. Results verify that the preconditioning effect plays a bigger role for the regional ice extent. Furthermore, they indicate an increase in volume export from the Laptev Sea as a consequence of enhanced offshore advection, which has far-reaching consequences for the entire Arctic sea ice mass balance. Moreover we show that ice dynamics in winter not only preconditions local summer ice extent, but also accelerate fast-ice decay. |
format |
Article in Journal/Newspaper |
author |
Itkin, Polona Krumpen, Thomas |
spellingShingle |
Itkin, Polona Krumpen, Thomas Winter sea ice export from the Laptev Sea preconditions the local summer sea ice cover and fast ice decay |
author_facet |
Itkin, Polona Krumpen, Thomas |
author_sort |
Itkin, Polona |
title |
Winter sea ice export from the Laptev Sea preconditions the local summer sea ice cover and fast ice decay |
title_short |
Winter sea ice export from the Laptev Sea preconditions the local summer sea ice cover and fast ice decay |
title_full |
Winter sea ice export from the Laptev Sea preconditions the local summer sea ice cover and fast ice decay |
title_fullStr |
Winter sea ice export from the Laptev Sea preconditions the local summer sea ice cover and fast ice decay |
title_full_unstemmed |
Winter sea ice export from the Laptev Sea preconditions the local summer sea ice cover and fast ice decay |
title_sort |
winter sea ice export from the laptev sea preconditions the local summer sea ice cover and fast ice decay |
publisher |
Copernicus |
publishDate |
2017 |
url |
https://epic.awi.de/id/eprint/45736/ https://epic.awi.de/id/eprint/45736/1/tc-11-2383-2017.pdf https://www.the-cryosphere.net/11/2383/2017/ https://hdl.handle.net/10013/epic.51836 https://hdl.handle.net/10013/epic.51836.d001 |
geographic |
Arctic Laptev Sea |
geographic_facet |
Arctic Laptev Sea |
genre |
Arctic laptev Laptev Sea Northeast Passage Sea ice The Cryosphere |
genre_facet |
Arctic laptev Laptev Sea Northeast Passage Sea ice The Cryosphere |
op_source |
EPIC3The Cryosphere, Copernicus, 11(5), pp. 2383-2391 |
op_relation |
https://epic.awi.de/id/eprint/45736/1/tc-11-2383-2017.pdf https://hdl.handle.net/10013/epic.51836.d001 Itkin, P. and Krumpen, T. orcid:0000-0001-6234-8756 (2017) Winter sea ice export from the Laptev Sea preconditions the local summer sea ice cover and fast ice decay , The Cryosphere, 11 (5), pp. 2383-2391 . doi:10.5194/tc-11-2383-2017 <https://doi.org/10.5194/tc-11-2383-2017> , hdl:10013/epic.51836 |
op_doi |
https://doi.org/10.5194/tc-11-2383-2017 |
container_title |
The Cryosphere |
container_volume |
11 |
container_issue |
5 |
container_start_page |
2383 |
op_container_end_page |
2391 |
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1766329888694861824 |