Validation of sea ice concentration
Bulletin date: 2025-12-11
Model vs. observations, sea ice class contingency tables
Date: 2025-12-05:
| 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 |
72711 |
28280 |
3022 |
416 |
70 |
40 |
0 |
0 |
| OW |
0 |
747 |
1858 |
911 |
410 |
116 |
7 |
0 |
| VODI |
0 |
68 |
610 |
933 |
936 |
706 |
272 |
0 |
| ODI |
0 |
1 |
198 |
421 |
916 |
1106 |
496 |
0 |
| CDI |
0 |
0 |
84 |
261 |
1041 |
2535 |
2758 |
2 |
| VCDI |
0 |
0 |
0 |
448 |
854 |
3898 |
19449 |
12263 |
|
...date precedes bulletin
|
Date: 2025-12-09:
| 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 |
69386 |
29192 |
3840 |
533 |
159 |
58 |
3 |
0 |
| OW |
0 |
738 |
1489 |
513 |
350 |
171 |
23 |
0 |
| VODI |
0 |
232 |
964 |
703 |
490 |
461 |
231 |
0 |
| ODI |
0 |
0 |
395 |
497 |
496 |
659 |
301 |
0 |
| CDI |
0 |
0 |
170 |
793 |
834 |
1812 |
2812 |
16 |
| VCDI |
0 |
0 |
6 |
163 |
242 |
1469 |
20543 |
18100 |
|
...date precedes bulletin
|
Date: 2025-12-11:
| 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 |
69056 |
29792 |
2715 |
899 |
130 |
24 |
0 |
0 |
| OW |
0 |
894 |
1066 |
702 |
297 |
81 |
6 |
0 |
| VODI |
0 |
303 |
712 |
799 |
739 |
436 |
101 |
0 |
| ODI |
0 |
8 |
119 |
366 |
606 |
901 |
440 |
0 |
| CDI |
0 |
4 |
40 |
315 |
571 |
1771 |
3250 |
45 |
| VCDI |
0 |
0 |
0 |
141 |
385 |
2578 |
24831 |
13721 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
69056 |
29792 |
2715 |
899 |
130 |
24 |
0 |
0 |
| OW |
0 |
894 |
1066 |
702 |
297 |
81 |
6 |
0 |
| VODI |
0 |
303 |
712 |
799 |
739 |
436 |
101 |
0 |
| ODI |
0 |
8 |
119 |
366 |
606 |
901 |
440 |
0 |
| CDI |
0 |
4 |
40 |
315 |
571 |
1771 |
3250 |
45 |
| VCDI |
0 |
0 |
0 |
141 |
385 |
2578 |
24831 |
13721 |
|
Date: 2025-12-15:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-12-17:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-12-19:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
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