2011_01
2010_01
2009_01
2008_01
2007_01
Class
Area
%
Area
%
Area
%
Area
%
Area
%
Very low snow
21.9
36.4
21.4
35.7
22.2
37.0
21.7
36.2
24.3
40.6
Low snow
13.4
22.3
13.2
21.9
15.1
25.1
14.8
24.7
13.2
22.1
Medium snow
11.5
19.1
11.2
18.7
11.2
18.7
11.9
19.9
11.4
19.0
High snow
7.5
12.5
8.6
14.4
6.7
11.1
6.7
11.2
6.3
10.5
Very high snow
4.3
7.2
4.4
7.3
3.7
6.1
3.5
5.8
3.6
5.9
Extreme snow
1.5
2.5
1.2
2.0
1.2
1.9
1.3
2.2
1.2
1.9
Total snow
60.0
100.0
60.0
100.0
60.0
100.0
60.0
100.0
60.0
100.0
RPI
264.9
264.9
264.9
264.9
264.9
Total
324.8
324.8
324.8
324.8
324.8
2011_04
2010_04
2009_04
2008_04
2007_04
Class
Area
%
%
Area
%
%
Area
%
%
Area
%
%
Area
%
%
Very low snow
10.7
27.8
17.8
8.6
24.2
14.3
8.8
24.3
14.7
9.5
26.6
15.9
9.6
26.7
16.0
Low snow
9.8
25.6
16.4
8.9
25.1
14.8
8.9
24.5
14.8
8.8
24.6
14.6
9.3
25.8
15.5
Medium snow
7.7
20.0
12.8
8.3
23.5
13.9
8.2
22.6
13.7
7.4
20.6
12.3
7.5
20.9
12.6
High snow
5.5
14.4
9.2
6.0
16.8
9.9
5.9
16.3
9.9
5.9
16.5
9.8
5.3
14.6
8.8
Very high snow
3.5
9.1
5.8
2.9
8.1
4.8
3.3
9.2
5.6
3.2
9.0
5.4
3.3
9.1
5.5
Extreme snow
1.1
3.0
1.9
0.8
2.2
1.3
1.1
3.1
1.9
0.9
2.6
1.6
1.1
2.9
1.8
Total snow
38.4
100.0
64.0
35.4
100.0
59.0
36.2
100.0
60.5
35.8
100.0
59.6
36.1
100.0
60.1
No snow
21.6
36.0
24.6
41.0
23.7
39.5
24.2
40.4
23.9
39.9
Total classes
60.0
100.0
60.0
100.0
60.0
100.0
60.0
100.0
60.0
100.0
RPI
264.9
264.9
264.9
264.9
264.9
Total
324.8
324.8
324.8
324.8
324.8
2011_07
2010_07
2009_07
2008_07
2007_07
Class
Area
%
%
Area
%
%
Area
%
%
Area
%
%
Area
%
%
Low snow
1.5
73.4
2.5
1.1
66.2
1.8
1.3
69.9
2.2
1.1
72.4
1.8
1.1
70.9
1.9
Medium snow
0.4
18.8
0.7
0.3
20.3
0.5
0.3
18.3
0.6
0.3
19.7
0.5
0.3
21.5
0.6
High snow
0.1
5.8
0.2
0.2
9.2
0.2
0.2
8.1
0.2
0.1
5.9
0.1
0.1
5.1
0.1
Very high snow
0.0
1.9
0.1
0.1
4.3
0.1
0.1
3.8
0.1
0.0
2.0
0.0
0.0
2.5
0.1
Total snow
2.1
100.0
3.5
1.6
100.0
2.7
1.9
100.0
3.1
1.5
100.0
2.5
1.6
100.0
2.6
No snow
57.9
96.6
58.4
97.3
58.2
96.9
58.5
97.5
58.4
97.4
Total classes
60.0
100.0
60.0
100.0
60.0
100.0
60.0
100.0
60.0
100.0
RPI
264.8
264.8
264.8
264.8
264.8
Total
324.8
324.8
324.8
324.8
324.8
2011_09
2010_10
2009_10
2008_10
2007_10
Class
Area
%
%
Area
%
%
Area
%
%
Area
%
%
Area
%
%
Low snow
2.6
59.6
4.3
7.4
54.0
12.4
11.0
62.0
18.4
7.3
54.1
12.2
7.4
52.2
12.3
Medium snow
1.2
28.4
2.1
4.4
31.7
7.3
4.4
24.8
7.4
3.5
26.2
5.9
4.4
31.1
7.3
High snow
0.4
8.1
0.6
1.7
12.5
2.9
1.9
10.9
3.2
2.0
15.0
3.4
1.8
12.6
3.0
Very high snow
0.1
2.8
0.2
0.3
1.8
0.4
0.4
2.0
0.6
0.6
4.1
0.9
0.5
3.5
0.8
Extreme snow
0.1
1.2
0.1
0.0
0.0
0.0
0.1
0.3
0.1
0.1
0.5
0.1
0.1
0.6
0.2
Total snow
4.3
100.0
7.2
13.7
100.0
22.9
17.8
100.0
29.7
13.5
100.0
22.5
14.2
100.0
23.6
No snow
55.7
92.8
46.2
77.1
42.2
70.3
46.5
77.5
45.8
76.4
Total classes
60.0
100.0
60.0
100.0
60.0
100.0
60.0
100.0
59.9
100.0
RPI
264.9
264.9
264.9
264.9
264.9
Total
324.8
324.8
324.8
324.8
324.8
Table 2
: Snow classes and snow cover area in million km2 for January, April, July and October months from 2007 to 2011.
