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Contemporary Problems of Ecology

2015 year, number 4

Extreme Climatic Events in the Tuva Republic Described on the Basis of Tree-Ring Analysis

V. V. BARINOV1, V. S. MYGLAN1, A. V. TAYNIK1, O. Ch. OYDUPA2, E. A. VAGANOV1
1Siberiаn Federal University, 660041, Krasnoyarsk, Svobodny ave., 79
2Tuvan State University, 667000, Kyzyl, Leninа str., 36
Keywords: upper boundary of the forest, anomalies in the structure of annual rings, frost rings, climatic extremes, the Tuva Republic

Abstract

The study of spatial distribution of anomalies in anatomical structure of annual rings of the Siberian larch was carried out on the upper boundary of a forest in the Tuva Republic. The spatial analysis of dendrochronological data was conducted in six areas: Mongun, Kolchan, Tan, Derzik, Kungur, Taris. The results helped to single out extreme climatic events of three categories: local (years 1662, 1699, 1792, 1804, 1814, 1821, 1847, 1867, 1993), regional (years 1698, 1754, 1775, 1779, 1785, 1788, 1789, 1797, 1813, 1819, 1843, 1854, 1869, 1870, 1882, 1911, 1923) and transregional (years 1783, 1784, 1812, 1884). The latter correspond well with the dates of large volcanic eruptions (Grimsvotn, Lakagigar, Soufriere St.Vincent and Krakatau volcanoes) and with historical data.