Validation of sea ice concentration
Bulletin date: 2025-08-14
Model vs. observations, sea ice class contingency tables
Date: 2025-08-08:
| 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 |
102563 |
21615 |
5026 |
430 |
81 |
36 |
93 |
0 |
| OW |
0 |
711 |
2365 |
2583 |
552 |
194 |
248 |
0 |
| VODI |
0 |
21 |
499 |
652 |
539 |
667 |
542 |
0 |
| ODI |
0 |
0 |
9 |
207 |
279 |
648 |
4496 |
1367 |
| CDI |
0 |
0 |
0 |
12 |
36 |
112 |
4863 |
6433 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
552 |
413 |
|
...date precedes bulletin
|
Date: 2025-08-12:
| 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 |
106873 |
18517 |
5641 |
605 |
177 |
62 |
113 |
0 |
| OW |
0 |
1195 |
2214 |
1529 |
559 |
140 |
362 |
0 |
| VODI |
0 |
91 |
423 |
297 |
453 |
574 |
619 |
0 |
| ODI |
0 |
0 |
154 |
71 |
211 |
876 |
3923 |
738 |
| CDI |
0 |
0 |
3 |
9 |
32 |
157 |
5729 |
6016 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
403 |
78 |
|
...date precedes bulletin
|
Date: 2025-08-14:
| 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 |
104878 |
21942 |
6112 |
1108 |
310 |
72 |
66 |
0 |
| OW |
0 |
899 |
1423 |
1195 |
398 |
148 |
276 |
0 |
| VODI |
0 |
0 |
64 |
470 |
627 |
582 |
627 |
0 |
| ODI |
0 |
0 |
7 |
60 |
113 |
1224 |
7201 |
779 |
| CDI |
0 |
0 |
2 |
5 |
20 |
134 |
3616 |
3382 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
1 |
840 |
263 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
104878 |
21942 |
6112 |
1108 |
310 |
72 |
66 |
0 |
| OW |
0 |
899 |
1423 |
1195 |
398 |
148 |
276 |
0 |
| VODI |
0 |
0 |
64 |
470 |
627 |
582 |
627 |
0 |
| ODI |
0 |
0 |
7 |
60 |
113 |
1224 |
7201 |
779 |
| CDI |
0 |
0 |
2 |
5 |
20 |
134 |
3616 |
3382 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
1 |
840 |
263 |
|
Date: 2025-08-18:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-08-20:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-08-22:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
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