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The analysis of regional climate changes and variability of heat balance components was carried out for the territory of West Siberia over the period of 1976-2014. It was revealed that the beginning of XXI century is characterized by decelerating of warming rates, and in winter season the temperature decrease is accompanied with the tendency of pressure rise. Dominating role in the variability of understudy parameters belongs to heat balance components: effective radiation and heat fluxes. According to numeric modelling results, CO2 radiaton forcing became less during last two decades.

The paper studies structure, mechanical properties, and deformation behavior of ultrafine-grained Zr-2.5Nb alloy obtained via pressing with the change of deformation axis and gradual temperature decrease. Formation of ultrafine-grained structure in Zr-2.5Nb alloy is found to result in the increase in its yield strength and ultimate strength, decrease in values of uniform deformation and deformation to failure, as well as simultaneous rise in the tendency to plastic strain localization at macrolevel within the temperature range of 293–673 K.The paper studies structure, mechanical properties, and deformation behavior of ultrafine-grained Zr-2.5Nb alloy obtained via pressing with the change of deformation axis and gradual temperature decrease. Formation of ultrafine-grained structure in Zr-2.5Nb alloy is found to result in the increase in its yield strength and ultimate strength, decrease in values of uniform deformation and deformation to failure, as well as simultaneous rise in the tendency to plastic strain localization at macrolevel within the temperature range of 293–673 K.

A negative trend of the average autumn temperature in the region of Stara Zagora, Bulgaria for the last 109 years was found. The autumn temperature was calculated from data in ten‐day average temperatures for the period of astronomical autumn—from the last ten‐day period of September to the second ten‐day period in December. There is literature confirmation that such decrease of autumn temperatures was found elsewhere in Bulgaria. Dependence between a series of average autumn temperature and several climatic indices was sought for an explanation of this phenomenon. Significant negative correlation of average autumn temperature with increasing branch of the cycles of solar activity over the same interval of time was found.