Modeling deep convection in the Greenland Sea
The development of deep convective events in the high-latitude ocean is studied using a three-dimensional, coupled ice-ocean model. Oceanic mixing is described according to the level 2.5 turbulence closure scheme in which convection occurs in a continuous way, i.e., convective adjustment is not invo...
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1992
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ftnasantrs:oai:casi.ntrs.nasa.gov:19920051544 2023-05-15T16:27:28+02:00 Modeling deep convection in the Greenland Sea Hakkinen, S. Mellor, G. L. Kantha, L. H. Unclassified, Unlimited, Publicly available Apr 15, 1992 http://ntrs.nasa.gov/search.jsp?R=19920051544 unknown http://ntrs.nasa.gov/search.jsp?R=19920051544 Accession ID: 92A34168 Copyright Other Sources 48 Journal of Geophysical Research; 97; C4, A; 5389-540 1992 ftnasantrs 2012-02-15T19:32:25Z The development of deep convective events in the high-latitude ocean is studied using a three-dimensional, coupled ice-ocean model. Oceanic mixing is described according to the level 2.5 turbulence closure scheme in which convection occurs in a continuous way, i.e., convective adjustment is not invoked. The model is forced by strong winds and surface cooling. Strong upwelling at the multilyear ice edge and consequent entrainment of warm Atlantic waters into the mixed layer is produced by winds parallel to the ice edge. Concomitant cooling drives deep convection and produces chimneylike structures. Inclusion of a barotropic mean flow over topography to the model provides important preconditioning and selects the location of deep convection. The most efficient preconditioning occurs at locations where the flow ascends a slope. In a stratified environment similar to the Greenland Sea with a 12 m/s wind the model simulations show that localized deep convection takes place after about 10 days to depths of 1000 m. Other/Unknown Material Greenland Greenland Sea NASA Technical Reports Server (NTRS) Greenland |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
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ftnasantrs |
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unknown |
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48 |
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48 Hakkinen, S. Mellor, G. L. Kantha, L. H. Modeling deep convection in the Greenland Sea |
topic_facet |
48 |
description |
The development of deep convective events in the high-latitude ocean is studied using a three-dimensional, coupled ice-ocean model. Oceanic mixing is described according to the level 2.5 turbulence closure scheme in which convection occurs in a continuous way, i.e., convective adjustment is not invoked. The model is forced by strong winds and surface cooling. Strong upwelling at the multilyear ice edge and consequent entrainment of warm Atlantic waters into the mixed layer is produced by winds parallel to the ice edge. Concomitant cooling drives deep convection and produces chimneylike structures. Inclusion of a barotropic mean flow over topography to the model provides important preconditioning and selects the location of deep convection. The most efficient preconditioning occurs at locations where the flow ascends a slope. In a stratified environment similar to the Greenland Sea with a 12 m/s wind the model simulations show that localized deep convection takes place after about 10 days to depths of 1000 m. |
format |
Other/Unknown Material |
author |
Hakkinen, S. Mellor, G. L. Kantha, L. H. |
author_facet |
Hakkinen, S. Mellor, G. L. Kantha, L. H. |
author_sort |
Hakkinen, S. |
title |
Modeling deep convection in the Greenland Sea |
title_short |
Modeling deep convection in the Greenland Sea |
title_full |
Modeling deep convection in the Greenland Sea |
title_fullStr |
Modeling deep convection in the Greenland Sea |
title_full_unstemmed |
Modeling deep convection in the Greenland Sea |
title_sort |
modeling deep convection in the greenland sea |
publishDate |
1992 |
url |
http://ntrs.nasa.gov/search.jsp?R=19920051544 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland Sea |
genre_facet |
Greenland Greenland Sea |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19920051544 Accession ID: 92A34168 |
op_rights |
Copyright |
_version_ |
1766016644197384192 |