Validation of sea ice concentration - American sector
Bulletin date: 2025-07-29
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-07-29:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10577 |
3455 |
11 |
52 |
19 |
0 |
0 |
0 |
| OW |
74 |
501 |
7 |
78 |
26 |
14 |
2 |
0 |
| VODI |
27 |
893 |
39 |
251 |
216 |
168 |
18 |
0 |
| ODI |
3 |
602 |
49 |
859 |
1067 |
565 |
33 |
0 |
| CDI |
5 |
291 |
36 |
1314 |
3150 |
2140 |
171 |
0 |
| VCDI |
5 |
163 |
25 |
837 |
5482 |
11339 |
993 |
0 |
|
Date: 2025-07-31:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10924 |
4671 |
47 |
350 |
78 |
7 |
0 |
0 |
| OW |
1 |
140 |
7 |
106 |
39 |
16 |
0 |
0 |
| VODI |
0 |
247 |
10 |
189 |
228 |
168 |
0 |
0 |
| ODI |
2 |
321 |
47 |
697 |
1176 |
657 |
13 |
0 |
| CDI |
4 |
269 |
50 |
1068 |
3365 |
2729 |
170 |
0 |
| VCDI |
0 |
221 |
33 |
612 |
5142 |
10423 |
1330 |
0 |
|
Date: 2025-08-02:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10934 |
5166 |
65 |
537 |
119 |
10 |
2 |
0 |
| OW |
0 |
98 |
5 |
64 |
31 |
28 |
6 |
0 |
| VODI |
1 |
191 |
10 |
171 |
129 |
184 |
25 |
0 |
| ODI |
2 |
280 |
44 |
811 |
711 |
865 |
177 |
0 |
| CDI |
7 |
337 |
73 |
1465 |
1953 |
2489 |
1153 |
9 |
| VCDI |
1 |
255 |
42 |
1216 |
2909 |
7159 |
5716 |
107 |
|
Date: 2025-08-04:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11042 |
5203 |
65 |
542 |
106 |
3 |
1 |
0 |
| OW |
0 |
68 |
3 |
53 |
19 |
20 |
9 |
0 |
| VODI |
0 |
176 |
18 |
242 |
120 |
172 |
38 |
0 |
| ODI |
0 |
270 |
29 |
926 |
759 |
818 |
221 |
3 |
| CDI |
0 |
381 |
54 |
1744 |
2179 |
2360 |
1237 |
69 |
| VCDI |
0 |
300 |
28 |
1468 |
2875 |
6902 |
4604 |
430 |
|
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