Long-term sea surface temperature variability in the Aegean Sea

  • Nikolaos Skliris | nskliris@oc.phys.uoa.gr Ocean Physics and Modelling Group, Division of Environmental Physics and Meteorology, University of Athens, Athens, Greece.
  • Sarantis S. Sofianos Ocean Physics and Modelling Group, Division of Environmental Physics and Meteorology, University of Athens, Athens, Greece.
  • Athanasios Gkanasos Ocean Physics and Modelling Group, Division of Environmental Physics and Meteorology, University of Athens, Athens, Greece.
  • Panagiotis Axaopoulos Ocean Physics and Modelling Group, Division of Environmental Physics and Meteorology, University of Athens, Athens, Greece.
  • Anneta Mantziafou Ocean Physics and Modelling Group, Division of Environmental Physics and Meteorology, University of Athens, Athens, Greece.
  • Vassilis Vervatis Ocean Physics and Modelling Group, Division of Environmental Physics and Meteorology, University of Athens, Athens, Greece.

Abstract

The inter-annual/decadal scale variability of the Aegean Sea Surface Temperature (SST) is investigated by means of long-term series of satellite-derived and in situ data. Monthly mean declouded SST maps are constructed over the 1985–2008 period, based on a re-analysis of AVHRR Oceans Pathfinder optimally interpolated data over the Aegean Sea. Basin-average SST time series are also constructed using the ICOADS in situ data over 1950–2006. Results indicate a small SST decreasing trend until the early nineties, and then a rapid surface warming consistent with the acceleration of the SST rise observed on the global ocean scale. Decadal-scale SST anomalies were found to be negatively correlated with the winter North Atlantic Oscillation (NAO) index over the last 60 years suggesting that along with global warming effects on the regional scale, a part of the long-term SST variability in the Aegean Sea is driven by large scale atmospheric natural variability patterns. In particular, the acceleration of surface warming in the Aegean Sea began nearly simultaneously with the NAO index abrupt shift in the mid-nineties from strongly positive values to weakly positive/negative values.

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Published
2011-12-01
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Keywords:
Aegean Sea, sea surface temperature, AVHRR, ICOADS, North Atlantic Oscillation, Indian Monsoon
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How to Cite
Skliris, N., Sofianos, S. S., Gkanasos, A., Axaopoulos, P., Mantziafou, A., & Vervatis, V. (2011). Long-term sea surface temperature variability in the Aegean Sea. Advances in Oceanography and Limnology, 2(2), 125-139. https://doi.org/10.4081/aiol.2011.5321