Validation of sea ice concentration - American sector
Bulletin date: 2025-11-04
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-11-04:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9910 |
3077 |
10 |
135 |
30 |
5 |
0 |
0 |
| OW |
20 |
260 |
2 |
25 |
2 |
5 |
0 |
0 |
| VODI |
23 |
413 |
6 |
57 |
18 |
5 |
0 |
0 |
| ODI |
17 |
499 |
17 |
183 |
61 |
0 |
6 |
0 |
| CDI |
2 |
505 |
23 |
430 |
327 |
36 |
86 |
0 |
| VCDI |
0 |
380 |
38 |
522 |
1053 |
2271 |
13455 |
11643 |
|
Date: 2025-11-06:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9546 |
3201 |
29 |
225 |
99 |
29 |
6 |
0 |
| OW |
28 |
148 |
4 |
39 |
39 |
3 |
4 |
0 |
| VODI |
34 |
187 |
4 |
75 |
89 |
3 |
1 |
0 |
| ODI |
12 |
290 |
8 |
141 |
138 |
9 |
4 |
0 |
| CDI |
1 |
359 |
30 |
365 |
310 |
101 |
116 |
69 |
| VCDI |
0 |
247 |
33 |
572 |
1342 |
2215 |
11088 |
14314 |
|
Date: 2025-11-08:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9400 |
2994 |
13 |
151 |
117 |
75 |
10 |
0 |
| OW |
17 |
168 |
5 |
31 |
8 |
14 |
0 |
0 |
| VODI |
22 |
246 |
13 |
59 |
24 |
22 |
3 |
0 |
| ODI |
1 |
240 |
18 |
110 |
69 |
24 |
5 |
0 |
| CDI |
0 |
366 |
31 |
471 |
365 |
161 |
134 |
21 |
| VCDI |
0 |
236 |
27 |
637 |
1118 |
2336 |
10811 |
14984 |
|
Date: 2025-11-10:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9258 |
2799 |
32 |
175 |
103 |
62 |
8 |
0 |
| OW |
10 |
97 |
5 |
23 |
20 |
8 |
1 |
0 |
| VODI |
18 |
162 |
3 |
69 |
28 |
12 |
3 |
0 |
| ODI |
38 |
184 |
10 |
108 |
76 |
26 |
7 |
0 |
| CDI |
4 |
290 |
20 |
356 |
443 |
177 |
158 |
98 |
| VCDI |
0 |
411 |
21 |
380 |
1219 |
2049 |
9401 |
17185 |
|
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