Validation of sea ice concentration - American sector
Bulletin date: 2025-12-02
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-12-02:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
3719 |
3751 |
7 |
25 |
6 |
0 |
0 |
0 |
| OW |
30 |
100 |
1 |
29 |
9 |
0 |
0 |
0 |
| VODI |
27 |
168 |
2 |
47 |
36 |
3 |
0 |
0 |
| ODI |
19 |
271 |
5 |
86 |
73 |
3 |
0 |
0 |
| CDI |
1 |
408 |
12 |
207 |
409 |
165 |
140 |
76 |
| VCDI |
0 |
110 |
16 |
324 |
967 |
3258 |
15841 |
15206 |
|
Date: 2025-12-04:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
3075 |
3869 |
4 |
75 |
40 |
20 |
0 |
0 |
| OW |
39 |
93 |
1 |
22 |
17 |
11 |
0 |
0 |
| VODI |
52 |
133 |
0 |
38 |
31 |
13 |
0 |
0 |
| ODI |
41 |
168 |
1 |
41 |
55 |
7 |
0 |
0 |
| CDI |
9 |
207 |
5 |
54 |
143 |
112 |
118 |
36 |
| VCDI |
1 |
472 |
34 |
495 |
1122 |
2754 |
16822 |
15327 |
|
Date: 2025-12-06:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
2745 |
3596 |
6 |
119 |
89 |
39 |
0 |
0 |
| OW |
46 |
100 |
0 |
10 |
8 |
6 |
1 |
0 |
| VODI |
80 |
172 |
0 |
16 |
27 |
4 |
1 |
0 |
| ODI |
78 |
191 |
2 |
18 |
33 |
21 |
2 |
0 |
| CDI |
60 |
175 |
2 |
31 |
70 |
73 |
139 |
32 |
| VCDI |
30 |
660 |
15 |
408 |
1197 |
2740 |
13090 |
19425 |
|
Date: 2025-12-08:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
2630 |
3188 |
15 |
97 |
91 |
13 |
0 |
0 |
| OW |
89 |
118 |
5 |
19 |
9 |
7 |
0 |
0 |
| VODI |
108 |
182 |
3 |
26 |
15 |
21 |
0 |
0 |
| ODI |
88 |
176 |
1 |
23 |
16 |
25 |
1 |
0 |
| CDI |
111 |
224 |
2 |
42 |
73 |
120 |
207 |
70 |
| VCDI |
78 |
700 |
18 |
346 |
1417 |
3027 |
7762 |
24394 |
|
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