The influence of the North Atlantic Oscillations (NAO) on the climate of Warsaw and Lviv

The objective of the work is to determine the periodicity and trends of change in air temperature in Warsaw and in Lviv during the 18th-20thcenturies, together with the forecast for the years 2000-2100. There are interesting diagrams of temporal changes of the North Atlantic Oscillation (NAO) indicator and air temperature, with the forecast reaching the year 2100. The forecasts were obtained on the basis of interpretations of the Sun activity and the NAO indicator cycles, determined with the method of ”regression sinusoids”. The fluctuations of air temperature and North Atlantic Oscillation during winter in Warsaw and in Lviv are closely correlated.