Variations of Winter Water properties and sea ice along the Greenwich meridian on decadal time scales
Sea-ice ocean interaction processes are of significant influence on the water mass formation in the Weddell gyre. On the basis of data obtained between 1984 and 2008 from eight repeat hydrographic sections, moored instruments and profiling floats in the Weddell gyre on the Greenwich meridian – almos...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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Online Access: | https://epic.awi.de/id/eprint/24395/ https://hdl.handle.net/10013/epic.39202 |
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ftawi:oai:epic.awi.de:24395 2024-09-15T18:12:40+00:00 Variations of Winter Water properties and sea ice along the Greenwich meridian on decadal time scales Behrendt, Axel Fahrbach, Eberhard Hoppema, Mario Rohardt, Gerd Boebel, Olaf Klatt, Olaf Wisotzki, Andreas Witte, Hannelore 2011 https://epic.awi.de/id/eprint/24395/ https://hdl.handle.net/10013/epic.39202 unknown Elsevier Behrendt, A. orcid:0000-0001-5746-1631 , Fahrbach, E. , Hoppema, M. orcid:0000-0002-2326-619X , Rohardt, G. orcid:0000-0003-0479-7638 , Boebel, O. orcid:0000-0002-2259-0035 , Klatt, O. , Wisotzki, A. and Witte, H. (2011) Variations of Winter Water properties and sea ice along the Greenwich meridian on decadal time scales , Deep-Sea Research II., 58 (25-26), pp. 2524-2532 . doi:10.1016/j.dsr2.2011.07.001 <https://doi.org/10.1016/j.dsr2.2011.07.001> , hdl:10013/epic.39202 EPIC3Deep-Sea Research II., Elsevier, 58(25-26), pp. 2524-2532 Article isiRev 2011 ftawi https://doi.org/10.1016/j.dsr2.2011.07.001 2024-06-24T04:02:42Z Sea-ice ocean interaction processes are of significant influence on the water mass formation in the Weddell gyre. On the basis of data obtained between 1984 and 2008 from eight repeat hydrographic sections, moored instruments and profiling floats in the Weddell gyre on the Greenwich meridian – almost all of them collected with RV Polarstern – we identified variations in the properties of the Winter Water and the sea ice draft. In the Winter Water the salinity was relatively low throughout the 1990s (with a minimum in 1992) and a maximum was observed in 2003. Observations of sea ice draft by moored upward looking sonars are available from 1996 onwards. In the southern part of the transect they display variations on a decadal time scale with a minimum in sea-ice thickness in 1998 and an increase since then. Salinity variations in the Winter Water layer cannot be explained only by variations in sea-ice formation and variable entrainment of underlying Warm Deep Water, but lateral advection of water and sea ice needs to be taken into account as well. Potential sources are melt water from the ice shelves in the western Weddell Sea or transport of water of low salinity entering the Weddell gyre from the east. Accompanying variations of the properties of Warm Deep Water are discussed in detail in a companion paper (Fahrbach et al., 2011, this issue). Article in Journal/Newspaper Ice Shelves Sea ice Weddell Sea Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Deep Sea Research Part II: Topical Studies in Oceanography 58 25-26 2524 2532 |
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 |
Sea-ice ocean interaction processes are of significant influence on the water mass formation in the Weddell gyre. On the basis of data obtained between 1984 and 2008 from eight repeat hydrographic sections, moored instruments and profiling floats in the Weddell gyre on the Greenwich meridian – almost all of them collected with RV Polarstern – we identified variations in the properties of the Winter Water and the sea ice draft. In the Winter Water the salinity was relatively low throughout the 1990s (with a minimum in 1992) and a maximum was observed in 2003. Observations of sea ice draft by moored upward looking sonars are available from 1996 onwards. In the southern part of the transect they display variations on a decadal time scale with a minimum in sea-ice thickness in 1998 and an increase since then. Salinity variations in the Winter Water layer cannot be explained only by variations in sea-ice formation and variable entrainment of underlying Warm Deep Water, but lateral advection of water and sea ice needs to be taken into account as well. Potential sources are melt water from the ice shelves in the western Weddell Sea or transport of water of low salinity entering the Weddell gyre from the east. Accompanying variations of the properties of Warm Deep Water are discussed in detail in a companion paper (Fahrbach et al., 2011, this issue). |
format |
Article in Journal/Newspaper |
author |
Behrendt, Axel Fahrbach, Eberhard Hoppema, Mario Rohardt, Gerd Boebel, Olaf Klatt, Olaf Wisotzki, Andreas Witte, Hannelore |
spellingShingle |
Behrendt, Axel Fahrbach, Eberhard Hoppema, Mario Rohardt, Gerd Boebel, Olaf Klatt, Olaf Wisotzki, Andreas Witte, Hannelore Variations of Winter Water properties and sea ice along the Greenwich meridian on decadal time scales |
author_facet |
Behrendt, Axel Fahrbach, Eberhard Hoppema, Mario Rohardt, Gerd Boebel, Olaf Klatt, Olaf Wisotzki, Andreas Witte, Hannelore |
author_sort |
Behrendt, Axel |
title |
Variations of Winter Water properties and sea ice along the Greenwich meridian on decadal time scales |
title_short |
Variations of Winter Water properties and sea ice along the Greenwich meridian on decadal time scales |
title_full |
Variations of Winter Water properties and sea ice along the Greenwich meridian on decadal time scales |
title_fullStr |
Variations of Winter Water properties and sea ice along the Greenwich meridian on decadal time scales |
title_full_unstemmed |
Variations of Winter Water properties and sea ice along the Greenwich meridian on decadal time scales |
title_sort |
variations of winter water properties and sea ice along the greenwich meridian on decadal time scales |
publisher |
Elsevier |
publishDate |
2011 |
url |
https://epic.awi.de/id/eprint/24395/ https://hdl.handle.net/10013/epic.39202 |
genre |
Ice Shelves Sea ice Weddell Sea |
genre_facet |
Ice Shelves Sea ice Weddell Sea |
op_source |
EPIC3Deep-Sea Research II., Elsevier, 58(25-26), pp. 2524-2532 |
op_relation |
Behrendt, A. orcid:0000-0001-5746-1631 , Fahrbach, E. , Hoppema, M. orcid:0000-0002-2326-619X , Rohardt, G. orcid:0000-0003-0479-7638 , Boebel, O. orcid:0000-0002-2259-0035 , Klatt, O. , Wisotzki, A. and Witte, H. (2011) Variations of Winter Water properties and sea ice along the Greenwich meridian on decadal time scales , Deep-Sea Research II., 58 (25-26), pp. 2524-2532 . doi:10.1016/j.dsr2.2011.07.001 <https://doi.org/10.1016/j.dsr2.2011.07.001> , hdl:10013/epic.39202 |
op_doi |
https://doi.org/10.1016/j.dsr2.2011.07.001 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
58 |
container_issue |
25-26 |
container_start_page |
2524 |
op_container_end_page |
2532 |
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1810450252336988160 |