Validation of sea ice concentration - American sector
Bulletin date: 2025-10-02
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-09-26:
| 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 |
17085 |
5610 |
68 |
51 |
9 |
0 |
0 |
0 |
| OW |
155 |
1924 |
221 |
313 |
136 |
28 |
0 |
0 |
| VODI |
0 |
283 |
131 |
410 |
573 |
491 |
29 |
0 |
| ODI |
0 |
33 |
21 |
171 |
251 |
865 |
380 |
0 |
| CDI |
0 |
4 |
11 |
118 |
365 |
1799 |
1871 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
12 |
595 |
6525 |
5328 |
|
...date precedes bulletin
|
Date: 2025-09-28:
| 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 |
15843 |
5991 |
117 |
87 |
1 |
0 |
0 |
0 |
| OW |
0 |
1867 |
378 |
568 |
129 |
26 |
0 |
0 |
| VODI |
0 |
199 |
125 |
473 |
447 |
364 |
51 |
0 |
| ODI |
0 |
15 |
21 |
180 |
411 |
577 |
210 |
0 |
| CDI |
0 |
3 |
2 |
60 |
330 |
1133 |
1633 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
13 |
945 |
9178 |
4489 |
|
...date precedes bulletin
|
Date: 2025-09-30:
| 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 |
15552 |
5907 |
120 |
153 |
78 |
9 |
0 |
0 |
| OW |
0 |
1229 |
355 |
455 |
242 |
37 |
12 |
0 |
| VODI |
0 |
216 |
124 |
466 |
665 |
280 |
15 |
0 |
| ODI |
0 |
13 |
36 |
238 |
389 |
453 |
89 |
0 |
| CDI |
0 |
2 |
7 |
103 |
366 |
1073 |
575 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
66 |
1461 |
10931 |
4149 |
|
...date precedes bulletin
|
Date: 2025-10-02:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-10-04:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-10-06:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-10-08:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-10-10:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
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