Spells of drought :climatological treatment

Abstract

Method of delimiting of duration of spells of drought and method of evaluation of drought severity within individual spells of drought are proposed. Only input data within easy reach are used in the methods. The proposed procedure enables to indicate cases of drought that occur with chosen probability, e. g. "once a two years", "once a ten years" and so on, and to recognize their properties. Some long-terrn climatic characteristics of spells of drought in Prague are given.