Summary
The intensification of the greenhouse effect gives as a result the reduction of the Equator-Poles thermal gradient with which the movement towards North of the subtropical anticyclones, including the Azores one, could be associated. In the present work the trend of the surface atmospheric pressure is studied, using the historical series of Brera (Milan), Thalassographic Institute (Trieste) and Pennisi Collegium (Acireale) observatories, which start from the XIX century. In addition, also the geopotential field at 500 hPa in the Mediterranean is examined during the period 1946–1989: data indicate an increasing trend of the pressure on the Central-Western basin of the Mediterranean, with which the reduction of strong cyclogenetic events and an increase of blocking situations are connected. The variations recorded up to now, even if consistent with the forecasts of the climatic scenarios, are still such that they can fall within the normal variability of the phenomena.
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Colacino, M., Conte, M. Greenhouse effect and pressure patterns in the Mediterranean basin. Il Nuovo Cimento C 16, 67–77 (1993). https://doi.org/10.1007/BF02509211
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DOI: https://doi.org/10.1007/BF02509211