Earth’s Cryosphere, 2019, Vol. XXIII, № 4, p. 56-64
CLIMATIC GEOINFORMATION ANALYSIS OF THE CRYOLITHOZONE IN THE NORTHEAST OF EUROPEAN RUSSIA
D.A. Kaverin1, E.M. Lapteva1, V.M. Shchanov1, A.V. Pastukhov1,
L.S. Sharaya2, P.A. Shary3
1Institute of Biology, Komi Scientific Centre UB RAS, 28, Kommunisticheskaya str., Syktyvkar, 167982, Russia; dkav@mail.ru
2Institute of Ecology of the Volga Basin, RAS, 10, Komzina str., Toliatti, 445003, Russia
3Institute of Physicochemical and Biological Problems in Soil Science, RAS,
2, Institutskaya str., Pushchino, Moscow Region, 142290, Russia
Based on the geoinformation analysis, the main climatic markers (parameters and indices) of the geocryological boundaries of the cryolithozone in the European northeast of Russia have been determined. Calculations of climatic data are based on the analysis of the WorldClim database with high spatial resolution and of regional permafrost map. The analysis of climatic characteristics, stipulating the geographical diferentiation of regional permafrost conditions was carried out for the background period (1960–1990). To assess the efficiency of climatic markers of permafrost boundaries, it is proposed to use the values of their variation coefficients. The decrease in the coefficients of variation from north to south emphasizes the “strengthening” of climate markers application effectiveness towards the southern permafrost limit. To improve the effectiveness of individual climatic markers of permafrost boundaries, a subdivision of the region into two sectors has been proposed. The multiple regression equation, combining air frost number (air frost index), annual amplitude of air temperature and July precipitation, explains the geographic position of regional permafrost boundaries by variation coefficients 83 %.
Geoinformation analysis, climatic parameters and indices, regional permafrost boundaries, multiple regression