Air Freezing and Thawing Indices in Yakutia and Their Mapping

I. S. Vasil’ev, A. I. Vasil’ev, and Ya. I. Torgovkin

The spatial distribution of long-term average air freezing and thawing indices in Yakutia was investigated using the data of 156 meteorological stations located in this region. The regularities of variations of air freezing and thawing indices are revealed depending on the impact of zonal, regional, and local environmental factors. The concrete correlations with the latitude, longitude, and altitude are obtained. The effects of climatic processes and relief of regional and local levels are estimated. Based on the revealed relationships, the 1 : 5000000-scale maps are plotted to demonstrate the spatial variations of air freezing and thawing indices.