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://doi.org/10.5194/tc-11-2383-2017 https://doaj.org/article/cf9fa8fafc054bdfafa37092a16d9c68 |
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ftdoajarticles:oai:doaj.org/article:cf9fa8fafc054bdfafa37092a16d9c68 2023-05-15T14:58:35+02:00 Winter sea ice export from the Laptev Sea preconditions the local summer sea ice cover and fast ice decay P. Itkin T. Krumpen 2017-10-01T00:00:00Z https://doi.org/10.5194/tc-11-2383-2017 https://doaj.org/article/cf9fa8fafc054bdfafa37092a16d9c68 EN eng Copernicus Publications https://www.the-cryosphere.net/11/2383/2017/tc-11-2383-2017.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-11-2383-2017 1994-0416 1994-0424 https://doaj.org/article/cf9fa8fafc054bdfafa37092a16d9c68 The Cryosphere, Vol 11, Pp 2383-2391 (2017) Environmental sciences GE1-350 Geology QE1-996.5 article 2017 ftdoajarticles https://doi.org/10.5194/tc-11-2383-2017 2022-12-31T13:52:39Z 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 Directory of Open Access Journals: DOAJ Articles Arctic Laptev Sea The Cryosphere 11 5 2383 2391 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 P. Itkin T. Krumpen Winter sea ice export from the Laptev Sea preconditions the local summer sea ice cover and fast ice decay |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
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 |
P. Itkin T. Krumpen |
author_facet |
P. Itkin T. Krumpen |
author_sort |
P. Itkin |
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 Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/tc-11-2383-2017 https://doaj.org/article/cf9fa8fafc054bdfafa37092a16d9c68 |
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 |
The Cryosphere, Vol 11, Pp 2383-2391 (2017) |
op_relation |
https://www.the-cryosphere.net/11/2383/2017/tc-11-2383-2017.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-11-2383-2017 1994-0416 1994-0424 https://doaj.org/article/cf9fa8fafc054bdfafa37092a16d9c68 |
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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1766330716133523456 |