coefficient of linear trend

To the article the estimation of dynamic of annual precipitation is driven, maximally possible and total evaporation in the different soil-climatic zones of the Saratov area in the conditions of the global warming of climate. It is shown that in a period from 1981 to 2014 year noted a statistically significant increase in the maximum possible evaporation, which leads to an increase of deficit of evaporation. As a result of the observed tendencies the climate norms of gidromelioration in the area were increased on 200–300 м3 / hectare.

In the article the tendencies of change of relative humidity and deficit of humidity of air, numbers of days are shown with relative humidity of air ?of 30% and ?80%, number of dry and moist days, to maximal duration of dry and moist periods during the vegetation of agricultural cultures, and also monthly and annual rainfalls and number of days with the different amount of fallouts. Speed over and meaningfulness of these changes are brought in a period from 1981 to 2014 on the station Saratov South-East.