Validation of sea ice concentration - Full domain
Bulletin date: 2025-09-23
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-09-23:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
74202 |
12360 |
6 |
27 |
5 |
1 |
0 |
0 |
| OW |
79 |
694 |
12 |
50 |
9 |
4 |
0 |
0 |
| VODI |
333 |
1825 |
43 |
393 |
111 |
50 |
12 |
0 |
| ODI |
253 |
2797 |
103 |
1214 |
770 |
456 |
105 |
0 |
| CDI |
3 |
232 |
37 |
883 |
1883 |
2228 |
1468 |
10 |
| VCDI |
0 |
9 |
1 |
124 |
935 |
5922 |
21905 |
2879 |
|
Date: 2025-09-25:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
73715 |
13964 |
29 |
142 |
64 |
9 |
0 |
0 |
| OW |
31 |
759 |
19 |
82 |
49 |
10 |
0 |
0 |
| VODI |
60 |
1473 |
34 |
283 |
95 |
33 |
1 |
0 |
| ODI |
14 |
1911 |
81 |
990 |
888 |
341 |
50 |
0 |
| CDI |
0 |
196 |
24 |
735 |
1528 |
2078 |
1385 |
16 |
| VCDI |
0 |
20 |
3 |
154 |
999 |
5959 |
21880 |
4329 |
|
Date: 2025-09-27:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
73293 |
14069 |
37 |
237 |
117 |
35 |
3 |
0 |
| OW |
4 |
911 |
12 |
98 |
39 |
14 |
3 |
0 |
| VODI |
6 |
1318 |
39 |
266 |
128 |
31 |
5 |
0 |
| ODI |
3 |
1710 |
54 |
673 |
583 |
353 |
124 |
2 |
| CDI |
0 |
241 |
23 |
460 |
1091 |
1826 |
2017 |
150 |
| VCDI |
0 |
41 |
4 |
128 |
766 |
5153 |
22190 |
6176 |
|
Date: 2025-09-29:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
72567 |
13431 |
56 |
372 |
204 |
31 |
25 |
0 |
| OW |
0 |
761 |
9 |
97 |
34 |
8 |
1 |
0 |
| VODI |
0 |
1366 |
28 |
274 |
135 |
34 |
5 |
0 |
| ODI |
0 |
1345 |
51 |
920 |
495 |
168 |
43 |
0 |
| CDI |
0 |
595 |
27 |
662 |
1124 |
1601 |
1510 |
63 |
| VCDI |
0 |
149 |
8 |
297 |
943 |
5796 |
26907 |
2291 |
|
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