Stathopoulos, V., Fotiadi, A., Houssos, E.E., Hatzianastassiou N. and Vardavas I. (2012)
Helmis, C.G. and Nastos, P.T. (eds), Advances in Meteorology Climatology and Atmospheric Physics, Springer Atmospheric Sciences, 737-742. DOI:10.1007/978-3-642-29172-2_104
Abstract
In the ongoing discussion of global warming and current climatic changes, an open issue is the increased variability of climatic parameters and the changing frequency and intensity of their extreme values. In this framework, the present work deals with the day-to-day variability of maximum (ΔΤmax) and min-imum (ΔΤmin) air temperature and diurnal temperature range (Δ(DTR)) over the Greek area for the period 1957 – 2002. The data used are daily values from 10 sta-tions of the National Hellenic Meteorological Service (N.H.M.S.) which are uni-formly distributed over the study area. The absolute values of the considered pa-rameters, for each station, are analyzed in terms of intra-annual and inter-annual variation, whereas the existence of statistically significant trends on a seasonal and annual basis is also examined. The analysis reveals stations with common behav-iour regarding temperature variability mainly determined by their geographical lo-cation and other geophysical characteristics. In many cases, especially for day-to-day variability of ΔΤmin and Δ(DTR) there appear statistically significant trends, mainly increasing, either on a seasonal basis or annual.