Analysis of the daily minimum temperatures for Belgrade and Ni

The present work is an analysis of the daily minimum temperatures during the period 1949-2009 in Belgrade and Ni using the climate indice TN10p, i.e. a number of days per year with the minimum temperature less than the 10th percentile (cold nights). A positive trend of the absolute minimum temperatures is found in Belgrade and Ni . It is calculated that the TN10p, i.e. number of cold nights decreases. A greater decrease of number of cold nights is recorded in Belgrade than one in Ni . The greatest decrease is observed on the annual basis, while smaller decrease is observed in autumn.