Impacts of atmospheric modes of variability on Mediterranean Sea surface heat exchange
The impacts of variations in the state of the first four modes of atmospheric variability in the North Atlantic/Europe region on air-sea heat exchange in the Mediterranean Sea are considered. Observation-based indices of these modes from the NOAA Climate Prediction Centre are used together with two...
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ftnerc:oai:nora.nerc.ac.uk:279231 2023-05-15T17:31:20+02:00 Impacts of atmospheric modes of variability on Mediterranean Sea surface heat exchange Josey, Simon A. Somot, Samuel Tsimplis, Mikis 2011 http://nora.nerc.ac.uk/id/eprint/279231/ unknown Josey, Simon A. orcid:0000-0002-1683-8831 Somot, Samuel; Tsimplis, Mikis. 2011 Impacts of atmospheric modes of variability on Mediterranean Sea surface heat exchange. Journal of Geophysical Research, 116 (C2). C02032. https://doi.org/10.1029/2010JC006685 <https://doi.org/10.1029/2010JC006685> Publication - Article PeerReviewed 2011 ftnerc https://doi.org/10.1029/2010JC006685 2023-02-04T19:35:49Z The impacts of variations in the state of the first four modes of atmospheric variability in the North Atlantic/Europe region on air-sea heat exchange in the Mediterranean Sea are considered. Observation-based indices of these modes from the NOAA Climate Prediction Centre are used together with two reanalysis (NCEP/NCAR and ARPERA) surface flux data sets for the period 1958–2006 to determine their relative influence on the mean heat budget of the full Mediterranean basin and the eastern and western subbasins. The modes considered are the North Atlantic Oscillation (NAO), East Atlantic pattern (EA), Scandinavian pattern (SCAN), and East Atlantic/West Russian pattern (EA/WR). Similar results are obtained with both NCEP/NCAR and ARPERA. In each case, winter anomalies dominate the annual mean heat budget and the leading mode, the NAO, has a surprisingly small impact on the full basin winter mean heat budget, <5 Wm−2. In contrast, the EA mode has a major effect, of order 25 Wm−2, with similar impacts on both the eastern and western Mediterranean. The SCAN mode has the weakest influence of those considered. The EA/WR mode plays a significant role but, in contrast to the EA mode, it generates a dipole in the heat exchange with an approximately equal and opposite signal of about 15 Wm−2 on the eastern and western subbasins. A particularly strong impact in the Aegean Sea is observed for the EA/WR mode and this is discussed in the context of episodic deep water formation in this region. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Natural Environment Research Council: NERC Open Research Archive Journal of Geophysical Research 116 C2 |
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Natural Environment Research Council: NERC Open Research Archive |
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description |
The impacts of variations in the state of the first four modes of atmospheric variability in the North Atlantic/Europe region on air-sea heat exchange in the Mediterranean Sea are considered. Observation-based indices of these modes from the NOAA Climate Prediction Centre are used together with two reanalysis (NCEP/NCAR and ARPERA) surface flux data sets for the period 1958–2006 to determine their relative influence on the mean heat budget of the full Mediterranean basin and the eastern and western subbasins. The modes considered are the North Atlantic Oscillation (NAO), East Atlantic pattern (EA), Scandinavian pattern (SCAN), and East Atlantic/West Russian pattern (EA/WR). Similar results are obtained with both NCEP/NCAR and ARPERA. In each case, winter anomalies dominate the annual mean heat budget and the leading mode, the NAO, has a surprisingly small impact on the full basin winter mean heat budget, <5 Wm−2. In contrast, the EA mode has a major effect, of order 25 Wm−2, with similar impacts on both the eastern and western Mediterranean. The SCAN mode has the weakest influence of those considered. The EA/WR mode plays a significant role but, in contrast to the EA mode, it generates a dipole in the heat exchange with an approximately equal and opposite signal of about 15 Wm−2 on the eastern and western subbasins. A particularly strong impact in the Aegean Sea is observed for the EA/WR mode and this is discussed in the context of episodic deep water formation in this region. |
format |
Article in Journal/Newspaper |
author |
Josey, Simon A. Somot, Samuel Tsimplis, Mikis |
spellingShingle |
Josey, Simon A. Somot, Samuel Tsimplis, Mikis Impacts of atmospheric modes of variability on Mediterranean Sea surface heat exchange |
author_facet |
Josey, Simon A. Somot, Samuel Tsimplis, Mikis |
author_sort |
Josey, Simon A. |
title |
Impacts of atmospheric modes of variability on Mediterranean Sea surface heat exchange |
title_short |
Impacts of atmospheric modes of variability on Mediterranean Sea surface heat exchange |
title_full |
Impacts of atmospheric modes of variability on Mediterranean Sea surface heat exchange |
title_fullStr |
Impacts of atmospheric modes of variability on Mediterranean Sea surface heat exchange |
title_full_unstemmed |
Impacts of atmospheric modes of variability on Mediterranean Sea surface heat exchange |
title_sort |
impacts of atmospheric modes of variability on mediterranean sea surface heat exchange |
publishDate |
2011 |
url |
http://nora.nerc.ac.uk/id/eprint/279231/ |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
Josey, Simon A. orcid:0000-0002-1683-8831 Somot, Samuel; Tsimplis, Mikis. 2011 Impacts of atmospheric modes of variability on Mediterranean Sea surface heat exchange. Journal of Geophysical Research, 116 (C2). C02032. https://doi.org/10.1029/2010JC006685 <https://doi.org/10.1029/2010JC006685> |
op_doi |
https://doi.org/10.1029/2010JC006685 |
container_title |
Journal of Geophysical Research |
container_volume |
116 |
container_issue |
C2 |
_version_ |
1766128839823458304 |