Abstract
Paper presents the results of comparative analysis of the satellite images data about the glacier state in glacier systems of Byrranga, Suntar-Khayata, and Chersky ranges (2003) with the data given in the Glacier Inventory of the USSR (1945, 1967 and 1970). We studied change of glacier area since the Glacier inventory compilation, which was based mainly on areal-photo and visual services with the satellite (LANDSAT) images data. The retreated glaciers have been analyzed by groups, sorted by the same aspect and morphological type of a glacier in terms of the rate of reduction. In total glacierization of Chersky Range reduced by about 30% (1970–2003), Suntar-Khayata by 20% (1945–2003), Byrranga—by 17% (1967–2003). The method for projection of glacier systems development in 2049–60 is applied for NE Asia Mountains using the ECHAM 4,5 and some other climatic scenarios. We have considered continental glacier systems (Suntar-Khayata, Chersky, Orulgan) and temperate-marine ones (Kamchatka). The method involves construction of vertical balance profiles for baseline and projected period, hypsographic schemes of ice distribution via altitude in a glacier system. The results of the method application to the glacier systems of the NE Asia are discussed in the paper.
Highlights
Northern Siberia is a very poorly studied region in terms of glacier state
The NE Siberia region is anomalous enough regarding climate warming started in the end of 20th century that has had an effect on essential retreat of glaciers
We developed method of projection and reconstruction the areas, altitudinal distribution and mass balance of glacier systems as a whole according the climate scenarios using calculation of equilibrium line altitude (ELA) changes and altitudinal distribution of ice in a changing system by linear and non-linear variants
Summary
Northern Siberia (subarctic zone of Eurasia) is a very poorly studied region in terms of glacier state (change). Reduction of the glacier area for the groups selected by morphological type and aspect The overwhelming majority of the NE Siberia glaciers reduced their extent for the considered time period due to climate warming, which keeps up to now.
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