Περίληψη:
This study shed light on the long term air temperature changes in the
troposphere over the Mediterranean. For this purpose, we utilized the
radiosonde datasets for the barometric levels at 850, 700, 500, 300,
200, 150, and 100 hPa from seventeen meteorological stations within the
Mediterranean, for the period 1965-2015. Besides, the gridded reanalysis
products of upper air temperature for the respective barometric pressure
levels from the European Centre for Medium-Range Weather Forecasts
(ECMWF, ERA-Interim) and the National Center for Environmental
Prediction-National Center for Atmospheric Research (NCEPNCAR) were used
and compared to stations' datasets. We analyzed the trends and
variability of upper air temperature on seasonal and annual basis. The
impact of atmospheric circulation, by means of specific climatic indices
such as Mediterranean Oscillation Index (MOI), North Sea Caspian Pattern
Index (NCPI) and North Atlantic Oscillation Index (NAOI), was also
examined. The results of our analysis indicate the anthropogenic forcing
to climate variability, especially in lower/middle troposphere against
upper troposphere over the Mediterranean.
Συγγραφείς:
Philandras, C. M.
Kapsomenakis, J.
Nastos, P. T.
Repapis, C.
and Zerefos, C. S.
