Full-depth temperature trends in the Northeastern Atlantic through the early 21st century
Full-depth temperature trends in the Northeastern Atlantic through the early 21st century
The vertical structure of temperature trends in the northeastern Atlantic (NEA) is investigated from a blend of Argo and hydrography data. The representativeness of sparse hydrography sampling in the basin-mean is assessed using a numerical model. Between 2003 and 2013, the NEA underwent a strong surface cooling (0-450?m) and a significant warming at intermediate and deep levels (1000?m-3000?m) that followed a strong cooling trend observed between 1988 and 2003. During 2003-2013, gyre-specific changes are found in the upper 1000?m (warming and cooling of the subtropical and subpolar gyres, respectively) whilst the intermediate and deep warming primarily occurred in the subpolar gyre, with important contributions from isopycnal heave and water mass property changes. The full-depth temperature change requires a local downward heat flux of 0.53?±?0.06?W?m?2 through the sea-surface, and its vertical distribution highlights the likely important role of the NEA in the recent global warming hiatus.
North Atlantic, temperature, observations, hiatus
7971-7979
Desbruyères, D.G.
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McDonagh, E.L.
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King, B.A.
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Garry, F.K.
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Blaker, A.T.
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Moat, B.
497dbb18-a98f-466b-b459-aa2c872ad2dc
Mercier, H.
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November 2014
Desbruyères, D.G.
93b8e6a5-f026-41f7-8d7e-b10d0dc166fc
McDonagh, E.L.
47e26eeb-b774-4068-af07-31847e42b977
King, B.A.
960f44b4-cc9c-4f77-b3c8-775530ac0061
Garry, F.K.
54b2fb6e-de85-4723-925d-4a57d076ee34
Blaker, A.T.
94efe8b2-c744-4e90-87d7-db19ffa41200
Moat, B.
497dbb18-a98f-466b-b459-aa2c872ad2dc
Mercier, H.
3f32a463-8623-4177-b7bd-0e22d1fc18ac
Desbruyères, D.G., McDonagh, E.L., King, B.A., Garry, F.K., Blaker, A.T., Moat, B. and Mercier, H.
(2014)
Full-depth temperature trends in the Northeastern Atlantic through the early 21st century.
Geophysical Research Letters, 41 (22), .
(doi:10.1002/2014GL061844).
Abstract
The vertical structure of temperature trends in the northeastern Atlantic (NEA) is investigated from a blend of Argo and hydrography data. The representativeness of sparse hydrography sampling in the basin-mean is assessed using a numerical model. Between 2003 and 2013, the NEA underwent a strong surface cooling (0-450?m) and a significant warming at intermediate and deep levels (1000?m-3000?m) that followed a strong cooling trend observed between 1988 and 2003. During 2003-2013, gyre-specific changes are found in the upper 1000?m (warming and cooling of the subtropical and subpolar gyres, respectively) whilst the intermediate and deep warming primarily occurred in the subpolar gyre, with important contributions from isopycnal heave and water mass property changes. The full-depth temperature change requires a local downward heat flux of 0.53?±?0.06?W?m?2 through the sea-surface, and its vertical distribution highlights the likely important role of the NEA in the recent global warming hiatus.
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Accepted/In Press date: November 2014
Published date: November 2014
Keywords:
North Atlantic, temperature, observations, hiatus
Organisations:
Physical Oceanography, Marine Physics and Ocean Climate
Identifiers
Local EPrints ID: 372102
URI: http://eprints.soton.ac.uk/id/eprint/372102
ISSN: 0094-8276
PURE UUID: 562c358d-16f8-4d6f-9e1a-721b460d616c
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Date deposited: 25 Nov 2014 10:04
Last modified: 14 Mar 2024 18:31
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Contributors
Author:
D.G. Desbruyères
Author:
E.L. McDonagh
Author:
B.A. King
Author:
F.K. Garry
Author:
A.T. Blaker
Author:
B. Moat
Author:
H. Mercier
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