Validation of sea ice concentration - American sector
Bulletin date: 2025-11-25
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-11-25:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8374 |
1117 |
7 |
19 |
1 |
0 |
2 |
0 |
| OW |
26 |
88 |
2 |
11 |
4 |
0 |
5 |
0 |
| VODI |
34 |
218 |
5 |
56 |
42 |
1 |
17 |
0 |
| ODI |
6 |
334 |
11 |
149 |
123 |
46 |
33 |
0 |
| CDI |
1 |
373 |
25 |
304 |
258 |
328 |
275 |
18 |
| VCDI |
0 |
85 |
15 |
204 |
881 |
2333 |
13223 |
16502 |
|
Date: 2025-11-27:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8328 |
943 |
7 |
23 |
13 |
21 |
5 |
0 |
| OW |
30 |
107 |
3 |
12 |
8 |
4 |
10 |
0 |
| VODI |
38 |
211 |
2 |
52 |
42 |
4 |
17 |
0 |
| ODI |
23 |
251 |
12 |
86 |
100 |
16 |
21 |
0 |
| CDI |
13 |
277 |
8 |
170 |
190 |
155 |
188 |
17 |
| VCDI |
0 |
248 |
19 |
366 |
875 |
2804 |
14985 |
14852 |
|
Date: 2025-11-29:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6645 |
2091 |
19 |
110 |
118 |
95 |
17 |
0 |
| OW |
51 |
100 |
3 |
29 |
47 |
18 |
6 |
0 |
| VODI |
72 |
162 |
10 |
61 |
60 |
21 |
7 |
0 |
| ODI |
48 |
186 |
6 |
76 |
93 |
39 |
9 |
0 |
| CDI |
36 |
204 |
8 |
98 |
159 |
212 |
193 |
4 |
| VCDI |
13 |
325 |
24 |
265 |
780 |
3399 |
16447 |
13190 |
|
Date: 2025-12-01:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
4038 |
3898 |
10 |
126 |
170 |
71 |
14 |
0 |
| OW |
21 |
96 |
2 |
33 |
72 |
21 |
4 |
0 |
| VODI |
24 |
152 |
5 |
54 |
106 |
52 |
10 |
0 |
| ODI |
2 |
117 |
3 |
77 |
107 |
87 |
9 |
0 |
| CDI |
1 |
206 |
22 |
114 |
153 |
154 |
200 |
72 |
| VCDI |
0 |
363 |
26 |
312 |
722 |
3571 |
16285 |
13974 |
|
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