Der Transport von Wärme, Wasser und Salz in den Arktischen Ozean (The transport of heat, mass and salt into the Arctic Ocean)
Most of the exchange of water, salt and heat between the Arctic Mediterranean and the worlds oceans occurs through the Framstrait and the Greenland Sea. Our present knowledge on the respective northward and southward water mass transports is essentially based on current meter moorings, geostrophic c...
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ftawi:oai:epic.awi.de:4377 2023-09-05T13:15:52+02:00 Der Transport von Wärme, Wasser und Salz in den Arktischen Ozean (The transport of heat, mass and salt into the Arctic Ocean) Cisewski, Boris 2001 application/pdf https://epic.awi.de/id/eprint/4377/ https://epic.awi.de/id/eprint/4377/1/Cis2001a.pdf https://hdl.handle.net/10013/epic.14952 https://hdl.handle.net/10013/epic.14952.d001 unknown https://epic.awi.de/id/eprint/4377/1/Cis2001a.pdf https://hdl.handle.net/10013/epic.14952.d001 Cisewski, B. (2001) Der Transport von Wärme, Wasser und Salz in den Arktischen Ozean (The transport of heat, mass and salt into the Arctic Ocean) , Reports on Polar and Marine Research, 378, 184, Dissertation . hdl:10013/epic.14952 EPIC3Reports on Polar and Marine Research, 378, 184, Dissertation, ISSN: 0176-5027 Book peerRev 2001 ftawi 2023-08-22T19:44:40Z Most of the exchange of water, salt and heat between the Arctic Mediterranean and the worlds oceans occurs through the Framstrait and the Greenland Sea. Our present knowledge on the respective northward and southward water mass transports is essentially based on current meter moorings, geostrophic calculations from hydrographic measurements and a variety of drifters. In order to explore the spatial velocity structure - horizontally on scales of eddies larger than 10 to 20 km and vertically in the order of 10 m - we have used a ship-mounted ADCP on several expeditions of RV Polarstern since 1990 to investigate the velocity field within the uppermost 400 m. These measurements provide snap-shots of the velocity field on scales not resolved by moorings, and they also serve as reference for the conversion of geostrophic into absolute velocities. Furthermore, in combination with water mass analyses it was possible to calculate the individual transports of the characteristic water masses for the whole water column in addition to the total transport in the area. The combination of high resolution hydrographic and velocity measurements at identical grid points allows to avoid the interpolation problems involved in the evaluation of mooring measurements.The mean circulation of the Greenland Sea is dominated by a large cyclonic and predominantly barotropic gyre. The calculated absolute velocities across the 75°N standard section question the existence of Koltermanns (1991) postulated deep anticyclonic gyre. At 75°N the East Greenland Current (EGC) is identified over a distance of 140 km as a narrow jet which carries ice and polar water to the South. The total volume transport calculated for the region of the EGC is comparable with results of moored current meters and ranges between 12 and 29 Sv (Fahrbach et al., 1995 and Woodgate et al., 1999).In contrast to the EGC the Westspitsbergen Current (WSC) carries Atlantic Water (AW) to the North and exhibits a much larger mesoscale variability. The velocity field in the WSC is ... Book Arctic Arctic Arctic Ocean Arktis* East Greenland east greenland current Greenland Greenland Sea Reports on Polar and Marine Research Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Arctic Ocean Greenland |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Most of the exchange of water, salt and heat between the Arctic Mediterranean and the worlds oceans occurs through the Framstrait and the Greenland Sea. Our present knowledge on the respective northward and southward water mass transports is essentially based on current meter moorings, geostrophic calculations from hydrographic measurements and a variety of drifters. In order to explore the spatial velocity structure - horizontally on scales of eddies larger than 10 to 20 km and vertically in the order of 10 m - we have used a ship-mounted ADCP on several expeditions of RV Polarstern since 1990 to investigate the velocity field within the uppermost 400 m. These measurements provide snap-shots of the velocity field on scales not resolved by moorings, and they also serve as reference for the conversion of geostrophic into absolute velocities. Furthermore, in combination with water mass analyses it was possible to calculate the individual transports of the characteristic water masses for the whole water column in addition to the total transport in the area. The combination of high resolution hydrographic and velocity measurements at identical grid points allows to avoid the interpolation problems involved in the evaluation of mooring measurements.The mean circulation of the Greenland Sea is dominated by a large cyclonic and predominantly barotropic gyre. The calculated absolute velocities across the 75°N standard section question the existence of Koltermanns (1991) postulated deep anticyclonic gyre. At 75°N the East Greenland Current (EGC) is identified over a distance of 140 km as a narrow jet which carries ice and polar water to the South. The total volume transport calculated for the region of the EGC is comparable with results of moored current meters and ranges between 12 and 29 Sv (Fahrbach et al., 1995 and Woodgate et al., 1999).In contrast to the EGC the Westspitsbergen Current (WSC) carries Atlantic Water (AW) to the North and exhibits a much larger mesoscale variability. The velocity field in the WSC is ... |
format |
Book |
author |
Cisewski, Boris |
spellingShingle |
Cisewski, Boris Der Transport von Wärme, Wasser und Salz in den Arktischen Ozean (The transport of heat, mass and salt into the Arctic Ocean) |
author_facet |
Cisewski, Boris |
author_sort |
Cisewski, Boris |
title |
Der Transport von Wärme, Wasser und Salz in den Arktischen Ozean (The transport of heat, mass and salt into the Arctic Ocean) |
title_short |
Der Transport von Wärme, Wasser und Salz in den Arktischen Ozean (The transport of heat, mass and salt into the Arctic Ocean) |
title_full |
Der Transport von Wärme, Wasser und Salz in den Arktischen Ozean (The transport of heat, mass and salt into the Arctic Ocean) |
title_fullStr |
Der Transport von Wärme, Wasser und Salz in den Arktischen Ozean (The transport of heat, mass and salt into the Arctic Ocean) |
title_full_unstemmed |
Der Transport von Wärme, Wasser und Salz in den Arktischen Ozean (The transport of heat, mass and salt into the Arctic Ocean) |
title_sort |
der transport von wärme, wasser und salz in den arktischen ozean (the transport of heat, mass and salt into the arctic ocean) |
publishDate |
2001 |
url |
https://epic.awi.de/id/eprint/4377/ https://epic.awi.de/id/eprint/4377/1/Cis2001a.pdf https://hdl.handle.net/10013/epic.14952 https://hdl.handle.net/10013/epic.14952.d001 |
geographic |
Arctic Arctic Ocean Greenland |
geographic_facet |
Arctic Arctic Ocean Greenland |
genre |
Arctic Arctic Arctic Ocean Arktis* East Greenland east greenland current Greenland Greenland Sea Reports on Polar and Marine Research |
genre_facet |
Arctic Arctic Arctic Ocean Arktis* East Greenland east greenland current Greenland Greenland Sea Reports on Polar and Marine Research |
op_source |
EPIC3Reports on Polar and Marine Research, 378, 184, Dissertation, ISSN: 0176-5027 |
op_relation |
https://epic.awi.de/id/eprint/4377/1/Cis2001a.pdf https://hdl.handle.net/10013/epic.14952.d001 Cisewski, B. (2001) Der Transport von Wärme, Wasser und Salz in den Arktischen Ozean (The transport of heat, mass and salt into the Arctic Ocean) , Reports on Polar and Marine Research, 378, 184, Dissertation . hdl:10013/epic.14952 |
_version_ |
1776197680273293312 |