Ice production in Storfjorden (Svalbard) estimated from a model based on AMSR-E observations: impact on water mass properties

Storfjorden, which hosts a latent heat polynya, is a well known region of dense water formation. This Brine-enriched Shelf Water (BSW) displays substantial year to year variability in its properties, which is partly linked to interannual variations in ice production. Here we have developed a model b...

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Published in:Journal of Geophysical Research: Oceans
Main Authors: Jardon, Fernanda P., Vivier , F., Bouruet-Aubertot, P., Lourenco, A., Cuypers, Y., Willmes, Sascha
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2014
Subjects:
Online Access:https://oceanrep.geomar.de/id/eprint/25359/
https://oceanrep.geomar.de/id/eprint/25359/1/Jardon%20et.al.pdf
https://doi.org/10.1002/2013JC009322
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spelling ftoceanrep:oai:oceanrep.geomar.de:25359 2023-05-15T16:18:08+02:00 Ice production in Storfjorden (Svalbard) estimated from a model based on AMSR-E observations: impact on water mass properties Jardon, Fernanda P. Vivier , F. Bouruet-Aubertot, P. Lourenco, A. Cuypers, Y. Willmes, Sascha 2014-01 text https://oceanrep.geomar.de/id/eprint/25359/ https://oceanrep.geomar.de/id/eprint/25359/1/Jardon%20et.al.pdf https://doi.org/10.1002/2013JC009322 en eng Wiley https://oceanrep.geomar.de/id/eprint/25359/1/Jardon%20et.al.pdf Jardon, F. P., Vivier , F., Bouruet-Aubertot, P., Lourenco, A., Cuypers, Y. and Willmes, S. (2014) Ice production in Storfjorden (Svalbard) estimated from a model based on AMSR-E observations: impact on water mass properties. Journal of Geophysical Research - Oceans, 119 . pp. 377-393. DOI 10.1002/2013JC009322 <https://doi.org/10.1002/2013JC009322>. doi:10.1002/2013JC009322 Article PeerReviewed 2014 ftoceanrep https://doi.org/10.1002/2013JC009322 2023-04-07T15:13:51Z Storfjorden, which hosts a latent heat polynya, is a well known region of dense water formation. This Brine-enriched Shelf Water (BSW) displays substantial year to year variability in its properties, which is partly linked to interannual variations in ice production. Here we have developed a model based on high-resolution AMSR-E satellite sea-ice concentration data, available between 2002 and 2011, and atmospheric forcing to estimate the ice production in the polynya and associated salt release. The average modeled ice production for the epoch 2002–2011 is 47 km3 per year, corresponding to a salt release of 1200 × 109 kg. The two most anomalous winters were 2004–2005 (salt deficit of −367 × 109 kg) and 2007–2008 (salt excess of 398 × 109 kg). Available observations of BSW properties are relatively scarce during this period and are here augmented with data collected in March 2007 from an ice-tethered mooring to the northwest of the fjord. BSW was found up to the surface, with maximum salinity and density of 35.27 and 28.4 kg m−3, respectively, at 55 m. In addition, supercooled water was found down to 10 m under relatively mild atmospheric conditions. It is shown to have formed a week before, during an intense frazil ice formation episode, exceeding 2 km3 of frazil ice according to the model. Although observations remain too few to robustly assess the relation between ice production and BSW properties, there is suggestion of a direct impact for most anomalous years. The exceptional ice production in 2007–2008 is most likely the cause of the very saline BSW in 2008 and strong plume of dense water toward Fram Strait reported by other authors. Anomalous ice production appears predominantly driven by the duration of the freezing season and anomalous opening of the polynya. Article in Journal/Newspaper Fram Strait Sea ice Storfjorden Svalbard OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Svalbard Journal of Geophysical Research: Oceans 119 1 377 393
institution Open Polar
collection OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
op_collection_id ftoceanrep
language English
description Storfjorden, which hosts a latent heat polynya, is a well known region of dense water formation. This Brine-enriched Shelf Water (BSW) displays substantial year to year variability in its properties, which is partly linked to interannual variations in ice production. Here we have developed a model based on high-resolution AMSR-E satellite sea-ice concentration data, available between 2002 and 2011, and atmospheric forcing to estimate the ice production in the polynya and associated salt release. The average modeled ice production for the epoch 2002–2011 is 47 km3 per year, corresponding to a salt release of 1200 × 109 kg. The two most anomalous winters were 2004–2005 (salt deficit of −367 × 109 kg) and 2007–2008 (salt excess of 398 × 109 kg). Available observations of BSW properties are relatively scarce during this period and are here augmented with data collected in March 2007 from an ice-tethered mooring to the northwest of the fjord. BSW was found up to the surface, with maximum salinity and density of 35.27 and 28.4 kg m−3, respectively, at 55 m. In addition, supercooled water was found down to 10 m under relatively mild atmospheric conditions. It is shown to have formed a week before, during an intense frazil ice formation episode, exceeding 2 km3 of frazil ice according to the model. Although observations remain too few to robustly assess the relation between ice production and BSW properties, there is suggestion of a direct impact for most anomalous years. The exceptional ice production in 2007–2008 is most likely the cause of the very saline BSW in 2008 and strong plume of dense water toward Fram Strait reported by other authors. Anomalous ice production appears predominantly driven by the duration of the freezing season and anomalous opening of the polynya.
format Article in Journal/Newspaper
author Jardon, Fernanda P.
Vivier , F.
Bouruet-Aubertot, P.
Lourenco, A.
Cuypers, Y.
Willmes, Sascha
spellingShingle Jardon, Fernanda P.
Vivier , F.
Bouruet-Aubertot, P.
Lourenco, A.
Cuypers, Y.
Willmes, Sascha
Ice production in Storfjorden (Svalbard) estimated from a model based on AMSR-E observations: impact on water mass properties
author_facet Jardon, Fernanda P.
Vivier , F.
Bouruet-Aubertot, P.
Lourenco, A.
Cuypers, Y.
Willmes, Sascha
author_sort Jardon, Fernanda P.
title Ice production in Storfjorden (Svalbard) estimated from a model based on AMSR-E observations: impact on water mass properties
title_short Ice production in Storfjorden (Svalbard) estimated from a model based on AMSR-E observations: impact on water mass properties
title_full Ice production in Storfjorden (Svalbard) estimated from a model based on AMSR-E observations: impact on water mass properties
title_fullStr Ice production in Storfjorden (Svalbard) estimated from a model based on AMSR-E observations: impact on water mass properties
title_full_unstemmed Ice production in Storfjorden (Svalbard) estimated from a model based on AMSR-E observations: impact on water mass properties
title_sort ice production in storfjorden (svalbard) estimated from a model based on amsr-e observations: impact on water mass properties
publisher Wiley
publishDate 2014
url https://oceanrep.geomar.de/id/eprint/25359/
https://oceanrep.geomar.de/id/eprint/25359/1/Jardon%20et.al.pdf
https://doi.org/10.1002/2013JC009322
geographic Svalbard
geographic_facet Svalbard
genre Fram Strait
Sea ice
Storfjorden
Svalbard
genre_facet Fram Strait
Sea ice
Storfjorden
Svalbard
op_relation https://oceanrep.geomar.de/id/eprint/25359/1/Jardon%20et.al.pdf
Jardon, F. P., Vivier , F., Bouruet-Aubertot, P., Lourenco, A., Cuypers, Y. and Willmes, S. (2014) Ice production in Storfjorden (Svalbard) estimated from a model based on AMSR-E observations: impact on water mass properties. Journal of Geophysical Research - Oceans, 119 . pp. 377-393. DOI 10.1002/2013JC009322 <https://doi.org/10.1002/2013JC009322>.
doi:10.1002/2013JC009322
op_doi https://doi.org/10.1002/2013JC009322
container_title Journal of Geophysical Research: Oceans
container_volume 119
container_issue 1
container_start_page 377
op_container_end_page 393
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