Validation of sea ice concentration
Bulletin date: 2025-11-13
Model vs. observations, sea ice class contingency tables
Date: 2025-11-07:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
89450 |
28983 |
2678 |
900 |
272 |
42 |
0 |
0 |
| OW |
67 |
1218 |
613 |
700 |
606 |
117 |
19 |
0 |
| VODI |
0 |
164 |
286 |
476 |
463 |
165 |
77 |
0 |
| ODI |
0 |
10 |
84 |
223 |
346 |
176 |
253 |
0 |
| CDI |
0 |
11 |
28 |
232 |
401 |
453 |
1314 |
0 |
| VCDI |
0 |
0 |
10 |
569 |
453 |
1972 |
17662 |
7351 |
|
...date precedes bulletin
|
Date: 2025-11-11:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
85818 |
27814 |
3100 |
1033 |
438 |
147 |
65 |
0 |
| OW |
1 |
1297 |
921 |
1030 |
550 |
242 |
49 |
0 |
| VODI |
0 |
164 |
535 |
717 |
529 |
503 |
62 |
0 |
| ODI |
0 |
25 |
132 |
348 |
426 |
292 |
187 |
0 |
| CDI |
0 |
3 |
95 |
208 |
488 |
690 |
1353 |
4 |
| VCDI |
0 |
0 |
31 |
230 |
318 |
1173 |
15493 |
12333 |
|
...date precedes bulletin
|
Date: 2025-11-13:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
81237 |
27143 |
3230 |
1003 |
400 |
211 |
24 |
0 |
| OW |
0 |
1312 |
1233 |
557 |
366 |
600 |
103 |
0 |
| VODI |
0 |
1567 |
1063 |
875 |
939 |
1122 |
205 |
0 |
| ODI |
0 |
263 |
282 |
300 |
503 |
574 |
458 |
0 |
| CDI |
0 |
0 |
30 |
102 |
207 |
659 |
2177 |
5 |
| VCDI |
0 |
0 |
7 |
90 |
94 |
684 |
14930 |
14289 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
81237 |
27143 |
3230 |
1003 |
400 |
211 |
24 |
0 |
| OW |
0 |
1312 |
1233 |
557 |
366 |
600 |
103 |
0 |
| VODI |
0 |
1567 |
1063 |
875 |
939 |
1122 |
205 |
0 |
| ODI |
0 |
263 |
282 |
300 |
503 |
574 |
458 |
0 |
| CDI |
0 |
0 |
30 |
102 |
207 |
659 |
2177 |
5 |
| VCDI |
0 |
0 |
7 |
90 |
94 |
684 |
14930 |
14289 |
|
Date: 2025-11-17:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-11-19:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-11-21:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
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