ИСТИНА

The phenomenon of ‘heat island’ exists in cities almost all over the world except only some specific conditions. It may be found in a space field of a lot of meteorological parameters, including air temperature, soil temperature, snow cover depth, dates of frosts, etc. Due to quick growth of big cities the air temperature inside them increases faster than at rural zones. The mean intensity of the urban ‘heat island’ in Moscow (i.e. a difference between air temperature inside and outside the city) was nearly of 1.0-1.5 ºC one century ago and nearly of 1.5-2.0 ºC in the middle of XX century. In the diurnal course the ‘heat island’ intensity usually is maximal at night.