Sea ice production and water mass modification in the eastern Laptev Sea
A simple polynya flux model driven by standard atmospheric forcing is used to investigate the ice formation that took place during an exceptionally strong and consistent western New Siberian (WNS) polynya event in 2004 in the Laptev Sea. Whether formation rates are high enough to erode the stratific...
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ftdlr:oai:elib.dlr.de:72442 2023-05-15T17:07:13+02:00 Sea ice production and water mass modification in the eastern Laptev Sea Krumpen, Thomas Hölemann, Jens A. Willmes, Sascha Morales Maqueda, Miguel A. Busche, Thomas Dmitrenko, Igor A. Gerdes, Rüdiger Haas, Christian Heinemann, Günther Hendricks, Stefan Kassens, Heidemarie Rabenstein, Lasse Schröder, David Barton, Eric Des 2011-05-21 https://elib.dlr.de/72442/ http://www.agu.org/journals/jc/jc1105/2010JC006545/ unknown Wiley Krumpen, Thomas und Hölemann, Jens A. und Willmes, Sascha und Morales Maqueda, Miguel A. und Busche, Thomas und Dmitrenko, Igor A. und Gerdes, Rüdiger und Haas, Christian und Heinemann, Günther und Hendricks, Stefan und Kassens, Heidemarie und Rabenstein, Lasse und Schröder, David (2011) Sea ice production and water mass modification in the eastern Laptev Sea. Journal of Geophysical Research - Oceans, 116 (C05014), Seiten 1-17. Wiley. DOI:10.1029/2010JC006545 <https://doi.org/10.1029/2010JC006545> ISSN 0148-0227 Radarkonzepte Zeitschriftenbeitrag PeerReviewed 2011 ftdlr https://doi.org/10.1029/2010JC006545 2019-09-08T22:54:11Z A simple polynya flux model driven by standard atmospheric forcing is used to investigate the ice formation that took place during an exceptionally strong and consistent western New Siberian (WNS) polynya event in 2004 in the Laptev Sea. Whether formation rates are high enough to erode the stratification of the water column beneath is examined by adding the brine released during the 2004 polynya event to the average winter density stratification of the water body, preconditioned by summers with a cyclonic atmospheric forcing (comparatively weakly stratified water column). Beforehand, the model performance is tested through a simulation of a well-documented event in April 2008. Neglecting the replenishment of water masses by advection into the polynya area, we find the probability for the occurrence of density-driven convection down to the bottom to be low. Our findings can be explained by the distinct vertical density gradient that characterizes the area of the WNS polynya and the apparent lack of extreme events in the eastern Laptev Sea. The simple approach is expected to be sufficiently rigorous, since the simulated event is exceptionally strong and consistent, the ice production and salt rejection rates are likely to be overestimated, and the amount of salt rejected is distrusted over a comparatively weakly stratified water column. We conclude that the observed erosion of the halocline and formation of vertically mixed water layers during a WNS polynya event is therefore predominantly related to wind- and tidally driven turbulent mixing processes. Other Non-Article Part of Journal/Newspaper laptev Laptev Sea Sea ice German Aerospace Center: elib - DLR electronic library Laptev Sea Journal of Geophysical Research 116 C5 |
institution |
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collection |
German Aerospace Center: elib - DLR electronic library |
op_collection_id |
ftdlr |
language |
unknown |
topic |
Radarkonzepte |
spellingShingle |
Radarkonzepte Krumpen, Thomas Hölemann, Jens A. Willmes, Sascha Morales Maqueda, Miguel A. Busche, Thomas Dmitrenko, Igor A. Gerdes, Rüdiger Haas, Christian Heinemann, Günther Hendricks, Stefan Kassens, Heidemarie Rabenstein, Lasse Schröder, David Sea ice production and water mass modification in the eastern Laptev Sea |
topic_facet |
Radarkonzepte |
description |
A simple polynya flux model driven by standard atmospheric forcing is used to investigate the ice formation that took place during an exceptionally strong and consistent western New Siberian (WNS) polynya event in 2004 in the Laptev Sea. Whether formation rates are high enough to erode the stratification of the water column beneath is examined by adding the brine released during the 2004 polynya event to the average winter density stratification of the water body, preconditioned by summers with a cyclonic atmospheric forcing (comparatively weakly stratified water column). Beforehand, the model performance is tested through a simulation of a well-documented event in April 2008. Neglecting the replenishment of water masses by advection into the polynya area, we find the probability for the occurrence of density-driven convection down to the bottom to be low. Our findings can be explained by the distinct vertical density gradient that characterizes the area of the WNS polynya and the apparent lack of extreme events in the eastern Laptev Sea. The simple approach is expected to be sufficiently rigorous, since the simulated event is exceptionally strong and consistent, the ice production and salt rejection rates are likely to be overestimated, and the amount of salt rejected is distrusted over a comparatively weakly stratified water column. We conclude that the observed erosion of the halocline and formation of vertically mixed water layers during a WNS polynya event is therefore predominantly related to wind- and tidally driven turbulent mixing processes. |
author2 |
Barton, Eric Des |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Krumpen, Thomas Hölemann, Jens A. Willmes, Sascha Morales Maqueda, Miguel A. Busche, Thomas Dmitrenko, Igor A. Gerdes, Rüdiger Haas, Christian Heinemann, Günther Hendricks, Stefan Kassens, Heidemarie Rabenstein, Lasse Schröder, David |
author_facet |
Krumpen, Thomas Hölemann, Jens A. Willmes, Sascha Morales Maqueda, Miguel A. Busche, Thomas Dmitrenko, Igor A. Gerdes, Rüdiger Haas, Christian Heinemann, Günther Hendricks, Stefan Kassens, Heidemarie Rabenstein, Lasse Schröder, David |
author_sort |
Krumpen, Thomas |
title |
Sea ice production and water mass modification in the eastern Laptev Sea |
title_short |
Sea ice production and water mass modification in the eastern Laptev Sea |
title_full |
Sea ice production and water mass modification in the eastern Laptev Sea |
title_fullStr |
Sea ice production and water mass modification in the eastern Laptev Sea |
title_full_unstemmed |
Sea ice production and water mass modification in the eastern Laptev Sea |
title_sort |
sea ice production and water mass modification in the eastern laptev sea |
publisher |
Wiley |
publishDate |
2011 |
url |
https://elib.dlr.de/72442/ http://www.agu.org/journals/jc/jc1105/2010JC006545/ |
geographic |
Laptev Sea |
geographic_facet |
Laptev Sea |
genre |
laptev Laptev Sea Sea ice |
genre_facet |
laptev Laptev Sea Sea ice |
op_relation |
Krumpen, Thomas und Hölemann, Jens A. und Willmes, Sascha und Morales Maqueda, Miguel A. und Busche, Thomas und Dmitrenko, Igor A. und Gerdes, Rüdiger und Haas, Christian und Heinemann, Günther und Hendricks, Stefan und Kassens, Heidemarie und Rabenstein, Lasse und Schröder, David (2011) Sea ice production and water mass modification in the eastern Laptev Sea. Journal of Geophysical Research - Oceans, 116 (C05014), Seiten 1-17. Wiley. DOI:10.1029/2010JC006545 <https://doi.org/10.1029/2010JC006545> ISSN 0148-0227 |
op_doi |
https://doi.org/10.1029/2010JC006545 |
container_title |
Journal of Geophysical Research |
container_volume |
116 |
container_issue |
C5 |
_version_ |
1766062507806425088 |