Spatio-temporal dynamics in daily amplitude changes of the air temperature at the Russian Far East

To identify the spatial, inter-annual and inter-seasonal dynamics of the daily amplitude of air temperature, the author uses the data from 99 weather stations in the Russian Far East for the period of 2000- 2019. It is shown that the maximum values of the daily amplitude are typical for the continental territories in the north, while the minimum ones - for the continental areas in the south, and for sea stations. For almost all weather stations, the amplitude is minimal in winter - in December and January. In general, a clear annual range and significant differences in values during the year were revealed for continental stations. The maximum at the continental northern stations is shown for April, while at the continental southern stations - in February. Marine areas are characterized by a smoothed seasonal course of the studied parameter, with a certain dimly marked maximum in February-March. A decrease in the day-to-day dynamics of air temperature amplitude over the period of 2000-2019 was revealed due to a faster increase in minimum temperatures as compared to maximum, which is typical for most of the weather stations. At the same time, an increase in the amplitude is shown at some stations, which is associated with a higher positive trend of maximum temperatures.