SIBERIAN PERMAFROST AND SEASONALLY FROZEN GROUNDS: PARAMETERS RETRIEVAL USING MICROWAVE SATELLITE DATA

摘要

Pilot experience of satellite microwave diagnosis of the parameters of Siberian permafrost (PF) and seasonally frozen grounds (SFG) is provided. Satellite SMMR/SSMI survey have been used for quantitative assessment of the thermal regime and moistening on tundra/PF/boreal forest zone for the Jamal Peninsula and the northern part of Western Siberia in outline 75°N/40°E-75°N/80°E-55oN/40°E-55°N/80°E. Traditional in situ observations including the Circumpolar Active-Layer Permafrost System (CAPS) data are involved for validation. Results of the retrieving of seasonal/annual parameters modification, including the location of the outer border of permafrost zone are presented. Effect of climate change is determined for meridian 70°E that intersect the Jamal Peninsula and the north part of Western Siberia - a top-ranged climate sensitive region in Siberia.