Climate

Mean Annual Dates of Stable Snow Cover's Formation .

Download GIS-layers

Compilation date:

May 2005.

Scale:

10 km/pix

Map's precision:

The map contains the mean annual dates of stable snow cover's formation for patches of the Earth's surface with the area of 10 x 10 km.

Projection:

"Albers Equal Area for the USSR":
ref. system : Albers Equal Area Conic for Russia
projection : Albers Equal Area Conic
datum : Pulkovo 1942 (S42)
delta WGS84 : 28 -130 -95
ellipsoid : Krasovsky
major s-ax : 6378245.000
minor s-ax : 6356863.019
origin long : 100
origin lat : 0
origin X : 0
origin Y : 0
scale fac : na
units : m
parameters : 2
stand ln 1 : 44
stand ln 2 : 68

Main content:

A bitmapped map containing mean annual dates of stable snow cover's formation.

Classifier precision:

Mean annual dates of stable snow cover's formation are represented as days - the number of days from the first day of the year. The isolines of the dates of stable snow cover's formation on the original map are represented with 10 days' pitch.

Map compilation procedure:

The map has been compiled on the basis of the data obtained from the Map of the Average Date of Stable Snow Cover's Formation from the Climate Atlas of the USSR (Climate Atlas of the USSR, 1960). The maps were vectorized along the isolines of the dates of stable snow cover's formation and rasterized with the interpolation technique.

Data sources:

Climate Atlas of the USSR, vol. 1, Davitay, F.F. ed., Moscow, Gidrometeoizdat, 1960.
Climate Handbooks. Air Humidity, Atmospheric Precipitation and Snow Cover. Issues 1-34. - Leningrad: 1965-1976.

Rights and copyrights not cited.