Validation of sea ice concentration - Full domain
Bulletin date: 2025-09-30
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-09-30:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
72227 |
9799 |
4 |
10 |
2 |
0 |
0 |
0 |
| OW |
55 |
769 |
2 |
17 |
2 |
0 |
0 |
0 |
| VODI |
122 |
2074 |
28 |
171 |
57 |
1 |
0 |
0 |
| ODI |
84 |
3411 |
141 |
1016 |
666 |
49 |
8 |
1 |
| CDI |
0 |
1162 |
65 |
949 |
1237 |
1202 |
584 |
52 |
| VCDI |
0 |
145 |
17 |
277 |
1219 |
6884 |
27215 |
2709 |
|
Date: 2025-10-02:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
70852 |
11803 |
6 |
73 |
15 |
0 |
0 |
0 |
| OW |
43 |
687 |
3 |
51 |
19 |
1 |
0 |
0 |
| VODI |
26 |
1448 |
22 |
162 |
66 |
7 |
0 |
0 |
| ODI |
17 |
2177 |
64 |
693 |
216 |
93 |
14 |
0 |
| CDI |
0 |
1444 |
80 |
1208 |
1377 |
1051 |
438 |
66 |
| VCDI |
0 |
224 |
33 |
502 |
1262 |
6884 |
23636 |
7670 |
|
Date: 2025-10-04:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
69871 |
13418 |
20 |
155 |
64 |
6 |
1 |
0 |
| OW |
13 |
458 |
10 |
78 |
39 |
6 |
0 |
0 |
| VODI |
6 |
829 |
16 |
220 |
56 |
20 |
2 |
0 |
| ODI |
2 |
1090 |
59 |
683 |
213 |
81 |
9 |
0 |
| CDI |
0 |
1029 |
55 |
1167 |
1025 |
1187 |
624 |
11 |
| VCDI |
0 |
183 |
15 |
773 |
1294 |
9283 |
27100 |
3262 |
|
Date: 2025-10-06:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
68985 |
14077 |
44 |
362 |
98 |
9 |
0 |
0 |
| OW |
1 |
402 |
8 |
70 |
49 |
12 |
0 |
0 |
| VODI |
0 |
651 |
12 |
167 |
96 |
31 |
0 |
0 |
| ODI |
0 |
665 |
26 |
400 |
235 |
87 |
7 |
0 |
| CDI |
0 |
711 |
56 |
1043 |
770 |
1031 |
463 |
14 |
| VCDI |
0 |
360 |
36 |
721 |
1731 |
10766 |
29003 |
1234 |
|
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