Академическое издательство «Гео»

Keywords: landscape-interpretation mapping, mountain-depression landscapes, microclimate, mean monthly air temperature, daily amplitude of air temperature.



GEOGRAPHY AND NATURAL RESOURCES, 2017, № 2, p. 182-189

Landscape-based mapping of the air temperature field in the Tunkinskaya depression

O.V. Vasilenko*, E.A. Istomina*, N.N. Voropai*,**

*Sochava Institute of Geography, SB RAS,
ul. Ulan-Batorskaya, 1, Irkutsk, 664033, Russia, oksa_na85@mail.ru, elena@irigs.irk.ru
**Institute of Monitoring of Climatic and Ecological Systems, SB RAS,
pr. Akademicheskii, 10/3, Tomsk, 634055, Russia, nadya@irigs.irk.ru

We investigated and mapped the characteristic features of the seasonal and daily air temperature variation for different landscapes of the Tunkinskaya depression by using the landscape map at the level of facies groups as well as thermochron sensors. In the analysis of the microclimatic characteristics of air temperature regime for different landscapes, we used year-round air temperature data obtained at fixed hours in 2013 at 37 observation sites. For each class of facies, we calculated the mean monthly values of air temperature, the maximum and minimum daily temperature as well as the daily amplitude for definite dates in the summer and winter periods and are presented in the form of maps of mean monthly air temperature values for the coldest (January) and the warmest (July) months and daily amplitudes. It is shown that the landscapes lying in the middle part of the depression are colder than the landscapes along its sides as regards mean annual values; however, the temperature regime differ dramatically for the summer and winter periods. It is established that the lowest and highest values of temperature in the wintertime correspond to the landscapes in the middle part of the depression and to the slopes of the mountain ridges, respectively, which is due to the occurrence of winter temperature inversions. Maximum amplitudes of daily temperature in summer and in winter were recorded in the landscapes of the middle part of the Tunkinskaya depression.

Keywords: landscape-interpretation mapping, mountain-depression landscapes, microclimate, mean monthly air temperature, daily amplitude of air temperature.

DOI: 10.21782/GiPR0206-1619-2017-2(182-189)

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