Open-Ocean Convection in the Labrador and Greenland Seas: Plume Scales and Interannual Variability
Observations at moored stations from the Labrador and Greenland Seas are analyzed under two major aspects: the interannual variability of convection and its relation to variability of the hydrographic, meteorological, and ice conditions, and the spatial and velocity scales of individual convective p...
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Christian-Albrechts-Universität zu Kiel
2000
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ftunivkiel:oai:macau.uni-kiel.de:diss_mods_00000363 2024-06-23T07:53:13+00:00 Open-Ocean Convection in the Labrador and Greenland Seas: Plume Scales and Interannual Variability Mertens, Christian Schott, Friedrich Böning, Claus 2000 https://nbn-resolving.org/urn:nbn:de:gbv:8-diss-3634 https://macau.uni-kiel.de/receive/diss_mods_00000363 https://macau.uni-kiel.de/servlets/MCRFileNodeServlet/dissertation_derivate_00000363/d363.pdf eng eng Christian-Albrechts-Universität zu Kiel https://nbn-resolving.org/urn:nbn:de:gbv:8-diss-3634 https://macau.uni-kiel.de/receive/diss_mods_00000363 https://macau.uni-kiel.de/servlets/MCRFileNodeServlet/dissertation_derivate_00000363/d363.pdf https://rightsstatements.org/page/InC/1.0/ info:eu-repo/semantics/openAccess ddc:550 thesis convection deep water vertical mixing turbulence vertical heat flux plumes observations nao Labrador Sea Greenland Sea Labradorsee Manteldiapir Konvektion Grönlandsee dissertation Text doc-type:PhDThesis 2000 ftunivkiel 2024-06-12T14:21:31Z Observations at moored stations from the Labrador and Greenland Seas are analyzed under two major aspects: the interannual variability of convection and its relation to variability of the hydrographic, meteorological, and ice conditions, and the spatial and velocity scales of individual convective plumes compared to existing scaling arguments derived from numerical and laboratory experiments. The observations were carried out in the Labrador Sea between 1994 and 1999 and in the Greenland Sea between 1988 and 1995. The convection activity observed showed considerable interannual variability throughout the observational period, but no seesaw behavior correlated with the North Atlantic Oscillation index. In the Labrador Sea, the maximum depth of convection decreased from about 1800~m in 1995 to only 600~m in 1999. The water mass properties of the winter mixed layer shifted towards warmer and less saline conditions. A general warming of the upper 2000~m was observed. Evidence for convection activity in the Labrador Sea boundary current region could not be found. The measurements were analyzed for individual events of convective plumes. During periods of intense convection activity in the Labrador Sea, it was possible to directly measure the vertical heat flux. The observed velocity scales were found to be a function of the surface buoyancy flux and the mixed layer depth and not controlled by the Earth's rotation. Doctoral or Postdoctoral Thesis Greenland Greenland Sea Grönlandsee Labrador Sea North Atlantic North Atlantic oscillation MACAU: Open Access Repository of Kiel University Greenland |
institution |
Open Polar |
collection |
MACAU: Open Access Repository of Kiel University |
op_collection_id |
ftunivkiel |
language |
English |
topic |
ddc:550 thesis convection deep water vertical mixing turbulence vertical heat flux plumes observations nao Labrador Sea Greenland Sea Labradorsee Manteldiapir Konvektion Grönlandsee |
spellingShingle |
ddc:550 thesis convection deep water vertical mixing turbulence vertical heat flux plumes observations nao Labrador Sea Greenland Sea Labradorsee Manteldiapir Konvektion Grönlandsee Mertens, Christian Open-Ocean Convection in the Labrador and Greenland Seas: Plume Scales and Interannual Variability |
topic_facet |
ddc:550 thesis convection deep water vertical mixing turbulence vertical heat flux plumes observations nao Labrador Sea Greenland Sea Labradorsee Manteldiapir Konvektion Grönlandsee |
description |
Observations at moored stations from the Labrador and Greenland Seas are analyzed under two major aspects: the interannual variability of convection and its relation to variability of the hydrographic, meteorological, and ice conditions, and the spatial and velocity scales of individual convective plumes compared to existing scaling arguments derived from numerical and laboratory experiments. The observations were carried out in the Labrador Sea between 1994 and 1999 and in the Greenland Sea between 1988 and 1995. The convection activity observed showed considerable interannual variability throughout the observational period, but no seesaw behavior correlated with the North Atlantic Oscillation index. In the Labrador Sea, the maximum depth of convection decreased from about 1800~m in 1995 to only 600~m in 1999. The water mass properties of the winter mixed layer shifted towards warmer and less saline conditions. A general warming of the upper 2000~m was observed. Evidence for convection activity in the Labrador Sea boundary current region could not be found. The measurements were analyzed for individual events of convective plumes. During periods of intense convection activity in the Labrador Sea, it was possible to directly measure the vertical heat flux. The observed velocity scales were found to be a function of the surface buoyancy flux and the mixed layer depth and not controlled by the Earth's rotation. |
author2 |
Schott, Friedrich Böning, Claus |
format |
Doctoral or Postdoctoral Thesis |
author |
Mertens, Christian |
author_facet |
Mertens, Christian |
author_sort |
Mertens, Christian |
title |
Open-Ocean Convection in the Labrador and Greenland Seas: Plume Scales and Interannual Variability |
title_short |
Open-Ocean Convection in the Labrador and Greenland Seas: Plume Scales and Interannual Variability |
title_full |
Open-Ocean Convection in the Labrador and Greenland Seas: Plume Scales and Interannual Variability |
title_fullStr |
Open-Ocean Convection in the Labrador and Greenland Seas: Plume Scales and Interannual Variability |
title_full_unstemmed |
Open-Ocean Convection in the Labrador and Greenland Seas: Plume Scales and Interannual Variability |
title_sort |
open-ocean convection in the labrador and greenland seas: plume scales and interannual variability |
publisher |
Christian-Albrechts-Universität zu Kiel |
publishDate |
2000 |
url |
https://nbn-resolving.org/urn:nbn:de:gbv:8-diss-3634 https://macau.uni-kiel.de/receive/diss_mods_00000363 https://macau.uni-kiel.de/servlets/MCRFileNodeServlet/dissertation_derivate_00000363/d363.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland Sea Grönlandsee Labrador Sea North Atlantic North Atlantic oscillation |
genre_facet |
Greenland Greenland Sea Grönlandsee Labrador Sea North Atlantic North Atlantic oscillation |
op_relation |
https://nbn-resolving.org/urn:nbn:de:gbv:8-diss-3634 https://macau.uni-kiel.de/receive/diss_mods_00000363 https://macau.uni-kiel.de/servlets/MCRFileNodeServlet/dissertation_derivate_00000363/d363.pdf |
op_rights |
https://rightsstatements.org/page/InC/1.0/ info:eu-repo/semantics/openAccess |
_version_ |
1802644788828176384 |