Open ocean deep convection, Mediterranean and Greenland Seas.

Schott, Friedrich, Visbeck, Martin and Send, Uwe (1994) Open ocean deep convection, Mediterranean and Greenland Seas. Open Access In: Ocean processes in climate dynamics: Global and Mediterranean examples. , ed. by Rizzoli, P. and Robinson, A. . Kluwer, Alphen aan den Rijn, Netherlands, pp. 203-225. ISBN 978-94-010-4376-2

[img] Text
20180507171350.pdf - Reprinted Version

Download (11Mb)

Abstract

Recent observations within deep convection regimes of the Gulf of Lions and Greenland Sea
all confirm the existence of small-scale plumes of only a few 100 m horizontal scale during cooling periods, in agreement with scaling arguments and non-hydrostatic modelling results. The integral effect of the plumes is that of a mixing agent rather than carrying water downward in a mean motion. It depends on the intensity and duration of the cooling how complete the mixing within the depth range of the plumes is.
In the Greenland Sea, the role of the ice through brine rejection was found to be important in the preconditioning period (November - February) rather than for the deep convection itself (March) which occurred when the water was ice-free.
After the convection period water masses are exchanged with the environment through baroclinic instability, causing increased deep T,S variance on a larger scale that continues to exist well into the next summer, allowing identification of previous-winter convection activity

Document Type: Book chapter
Research affiliation: OceanRep > GEOMAR
OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics
OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-PO Physical Oceanography
Date Deposited: 14 Jul 2008 17:32
Last Modified: 10 Aug 2018 10:36
URI: http://oceanrep.geomar.de/id/eprint/1013

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...