Use of new indices for the quantification of climate change based on air temperature variability

The current study attempted to investigate the temperature’s variability through the selection of indicators that refer mostly to the increases and decreases of three typical values of daily temperature (mean, maximum, minimum). The primary meteorological data that has been used come from the station of the Hellenic National Meteorological Service in Tatoi, the time period 1955-2001. The time series of the maximum and the mean number of days with a continuous increase or decrease in the daily temperature was investigated seasonally and annually. In addition, the number of switches (increases/decreases) on annual and seasonal scales was analyzed. The results of the time series analysis led to the indication that as time passes temperature’s variability grows with more switches (ups and downs), while its variations become a bit milder.