Validation of sea ice concentration
Bulletin date: 2025-07-03
Model vs. observations, sea ice class contingency tables
Date: 2025-06-27:
| 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 |
77556 |
19139 |
12074 |
1144 |
181 |
56 |
374 |
11 |
| OW |
0 |
365 |
3442 |
2804 |
512 |
131 |
451 |
35 |
| VODI |
0 |
8 |
690 |
2294 |
1378 |
803 |
1495 |
93 |
| ODI |
0 |
0 |
211 |
463 |
625 |
825 |
3077 |
67 |
| CDI |
0 |
0 |
139 |
342 |
362 |
431 |
6430 |
808 |
| VCDI |
0 |
0 |
0 |
26 |
18 |
115 |
8341 |
11528 |
|
...date precedes bulletin
|
Date: 2025-07-01:
| 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 |
79868 |
18739 |
13605 |
1543 |
236 |
150 |
253 |
0 |
| OW |
0 |
561 |
2956 |
2386 |
514 |
134 |
454 |
0 |
| VODI |
0 |
3 |
1015 |
1346 |
811 |
542 |
1319 |
0 |
| ODI |
0 |
0 |
359 |
483 |
560 |
755 |
2467 |
0 |
| CDI |
0 |
0 |
94 |
853 |
562 |
545 |
5584 |
3 |
| VCDI |
0 |
0 |
0 |
71 |
73 |
160 |
8322 |
11518 |
|
...date precedes bulletin
|
Date: 2025-07-03:
| 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 |
80395 |
19689 |
14900 |
1161 |
188 |
105 |
265 |
0 |
| OW |
0 |
185 |
3155 |
2127 |
409 |
202 |
476 |
0 |
| VODI |
0 |
5 |
909 |
1306 |
729 |
542 |
1262 |
0 |
| ODI |
0 |
0 |
283 |
678 |
610 |
925 |
2880 |
0 |
| CDI |
0 |
0 |
106 |
370 |
366 |
490 |
5221 |
15 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
18 |
8032 |
10836 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
80395 |
19689 |
14900 |
1161 |
188 |
105 |
265 |
0 |
| OW |
0 |
185 |
3155 |
2127 |
409 |
202 |
476 |
0 |
| VODI |
0 |
5 |
909 |
1306 |
729 |
542 |
1262 |
0 |
| ODI |
0 |
0 |
283 |
678 |
610 |
925 |
2880 |
0 |
| CDI |
0 |
0 |
106 |
370 |
366 |
490 |
5221 |
15 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
18 |
8032 |
10836 |
|
Date: 2025-07-07:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-07-09:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-07-11:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
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