CLIMATIC REGULARITIES OF EVAPORATION IN MOSCOW

M. A. Lokoshchenko

Results of evaporation measurements at Moscow State University for half a century are studied. Statistical estimates of semidiurnal and total diurnal precipitation in the warm season are made. The asymmetry of the seasonal cycle of evaporation is found, which is reflected in larger evaporation values in May than in August and September and is associated with a minimum of relative humidity in May. The dynamics of evaporation in Moscow in the second half of the 20th century is considered in detail. It is shown that there was a relative decrease in total evaporation in the 1970s and 1980s and an increase in evaporation in the last decade. The ratios between nocturnal and daytime evaporation, connections with the basic meteorological elements, and some measurement problems are discussed.