ИСТИНА

The long-term changes of the lower troposphere air temperature in Moscow is discussed by the data of Ostankino TV tower in Moscow (540 m); aerological station in Dolgoprudny town (on a distance 2 km apart the city) and high meteorological mast in Obninsk town (310 m) which is located on about 100 km to the South from Moscow centre. The dynamics of the air temperature has been studied for the period from 1991 to 2013 at levels of 2, 121 and 301 m by the data of high mast in Obninsk; at 2, 128, 305, 385 and 503 m by the data of TV tower; and from 2 to 4000 m by the data of radiosondes in Dolgoprudny. As a result of analysis, a total increase of the mean-annual air temperature has been detected at all heights everywhere during last a quarter of century. The growth of mean-annual air temperature was equal to 0.06-0.13 °C/year. A warming in the lower troposphere for this period was more intensive in Dolgoprudny (close to the Northern margin of Moscow) than in Obninsk due to, probably, an intensive urbanization at Northern suburbs of Moscow city during last two decades. However, an increase of the air temperature at recent time (several last years) became slower so that a warming deceleration occurs. At the annual course a weak cooling is observed in average from January to March because of cold winters during recent years whereas a clear warming took place at all the rest months.