Observations of new western Mediterranean deep water formation using Argo floats 2004-2006
Observations of new western Mediterranean deep water formation using Argo floats 2004-2006
The deep convection that occurs in the western basin of the Mediterranean Sea was investigated using Argo float data over two consecutive winters in 2004–2005 and 2005–2006. The results showed deep mixed layers reaching 2000m in surprising locations, namely the eastern Catalan subbasin (39.785 N, 4.845 E) and the western Ligurian subbasin (43.392 N, 7.765 E). Subsequently, new deep water was formed in March of 2005 and 2006 with =12.89– 12.92C, S=38.48–38.49 and =29.113 kgm?3. The deep water produced in the Ligurian subbasin during 2006 was more saline, warmer and denser than any historical observations of western Mediterranean deep water. The results show S, and in the western Mediterranean deep water are higher than 1990s values, with a salinity increase of 1.5×10?3 yr?1, a temperature increase of 3.6×10?3 C yr?1 and a density increase of 4.0×10?4 kgm?3 yr?1 apparent from a dataset of western Mediterranean deep water properties spanning 1955–2006.
133-149
Smith, R.O.
d6c80f0e-646e-40d8-88c5-4a875e54001a
Bryden, H.L.
7f823946-34e8-48a3-8bd4-a72d2d749184
Stansfield, K.
b62df90b-555d-4107-97aa-57b16d2e4b44
2008
Smith, R.O.
d6c80f0e-646e-40d8-88c5-4a875e54001a
Bryden, H.L.
7f823946-34e8-48a3-8bd4-a72d2d749184
Stansfield, K.
b62df90b-555d-4107-97aa-57b16d2e4b44
Smith, R.O., Bryden, H.L. and Stansfield, K.
(2008)
Observations of new western Mediterranean deep water formation using Argo floats 2004-2006.
Ocean Science, 4 (2), .
Abstract
The deep convection that occurs in the western basin of the Mediterranean Sea was investigated using Argo float data over two consecutive winters in 2004–2005 and 2005–2006. The results showed deep mixed layers reaching 2000m in surprising locations, namely the eastern Catalan subbasin (39.785 N, 4.845 E) and the western Ligurian subbasin (43.392 N, 7.765 E). Subsequently, new deep water was formed in March of 2005 and 2006 with =12.89– 12.92C, S=38.48–38.49 and =29.113 kgm?3. The deep water produced in the Ligurian subbasin during 2006 was more saline, warmer and denser than any historical observations of western Mediterranean deep water. The results show S, and in the western Mediterranean deep water are higher than 1990s values, with a salinity increase of 1.5×10?3 yr?1, a temperature increase of 3.6×10?3 C yr?1 and a density increase of 4.0×10?4 kgm?3 yr?1 apparent from a dataset of western Mediterranean deep water properties spanning 1955–2006.
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Published date: 2008
Organisations:
Ocean and Earth Science, National Oceanography Centre,Southampton
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Local EPrints ID: 54891
URI: http://eprints.soton.ac.uk/id/eprint/54891
ISSN: 1812-0792
PURE UUID: 0359bb59-bcb7-4792-90ef-99d49ae12d74
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Date deposited: 22 Jul 2008
Last modified: 16 Mar 2024 02:53
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Author:
R.O. Smith
Author:
K. Stansfield
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