Validation of sea ice concentration - Full domain
Bulletin date: 2025-10-16
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-10-10:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-10-12:
| 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 |
127161 |
13321 |
391 |
442 |
14 |
0 |
0 |
0 |
| OW |
121 |
1324 |
427 |
1059 |
293 |
12 |
0 |
0 |
| VODI |
12 |
208 |
154 |
1109 |
903 |
231 |
0 |
0 |
| ODI |
0 |
103 |
25 |
319 |
913 |
721 |
59 |
0 |
| CDI |
0 |
84 |
60 |
230 |
1158 |
2230 |
651 |
0 |
| VCDI |
0 |
0 |
0 |
13 |
189 |
12444 |
21398 |
6964 |
|
...date precedes bulletin
|
Date: 2025-10-14:
| 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 |
129040 |
10177 |
1410 |
332 |
5 |
0 |
0 |
0 |
| OW |
299 |
818 |
1529 |
761 |
77 |
2 |
0 |
0 |
| VODI |
14 |
111 |
905 |
615 |
375 |
9 |
0 |
0 |
| ODI |
0 |
10 |
858 |
470 |
402 |
110 |
0 |
0 |
| CDI |
1 |
0 |
2379 |
715 |
772 |
1219 |
91 |
0 |
| VCDI |
0 |
0 |
13551 |
4699 |
3026 |
9352 |
8355 |
2254 |
|
...date precedes bulletin
|
Date: 2025-10-16:
| 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 |
124169 |
13898 |
633 |
694 |
86 |
4 |
0 |
0 |
| OW |
254 |
1146 |
399 |
1620 |
264 |
37 |
0 |
0 |
| VODI |
67 |
153 |
70 |
1017 |
1303 |
122 |
0 |
0 |
| ODI |
1 |
40 |
51 |
199 |
1204 |
466 |
27 |
0 |
| CDI |
0 |
5 |
30 |
279 |
767 |
2759 |
817 |
0 |
| VCDI |
1 |
0 |
0 |
12 |
284 |
12968 |
16952 |
11945 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
124228 |
14124 |
679 |
867 |
144 |
11 |
0 |
0 |
| OW |
201 |
917 |
366 |
1484 |
271 |
37 |
0 |
0 |
| VODI |
61 |
151 |
60 |
985 |
1266 |
149 |
0 |
0 |
| ODI |
1 |
39 |
47 |
202 |
1212 |
525 |
39 |
0 |
| CDI |
1 |
11 |
31 |
279 |
743 |
2677 |
886 |
0 |
| VCDI |
0 |
0 |
0 |
4 |
272 |
12957 |
16871 |
11945 |
|
Date: 2025-10-18:
| 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 |
123438 |
13178 |
562 |
778 |
142 |
0 |
0 |
0 |
| OW |
174 |
1488 |
436 |
1365 |
504 |
38 |
0 |
0 |
| VODI |
5 |
341 |
146 |
994 |
1189 |
375 |
0 |
0 |
| ODI |
0 |
34 |
31 |
279 |
1047 |
824 |
22 |
0 |
| CDI |
0 |
3 |
26 |
266 |
850 |
2323 |
687 |
0 |
| VCDI |
1 |
0 |
0 |
5 |
257 |
12944 |
19340 |
10651 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
123482 |
13384 |
626 |
924 |
218 |
2 |
0 |
0 |
| OW |
111 |
1210 |
357 |
1241 |
534 |
60 |
0 |
0 |
| VODI |
23 |
420 |
153 |
941 |
1092 |
395 |
0 |
0 |
| ODI |
1 |
30 |
44 |
292 |
1110 |
796 |
57 |
0 |
| CDI |
1 |
0 |
21 |
279 |
772 |
2377 |
808 |
0 |
| VCDI |
0 |
0 |
0 |
10 |
263 |
12874 |
19184 |
10651 |
|
Date: 2025-10-20:
| 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 |
122445 |
12959 |
695 |
777 |
16 |
5 |
0 |
0 |
| OW |
34 |
1076 |
505 |
1641 |
227 |
1 |
0 |
0 |
| VODI |
25 |
56 |
58 |
1796 |
894 |
57 |
5 |
0 |
| ODI |
1 |
0 |
0 |
246 |
1628 |
246 |
142 |
0 |
| CDI |
0 |
0 |
0 |
27 |
1309 |
3789 |
222 |
0 |
| VCDI |
1 |
0 |
0 |
0 |
56 |
12470 |
16271 |
15063 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
122392 |
12316 |
658 |
1241 |
295 |
10 |
0 |
0 |
| OW |
83 |
1263 |
350 |
1259 |
710 |
126 |
0 |
0 |
| VODI |
29 |
472 |
177 |
1229 |
1100 |
668 |
33 |
0 |
| ODI |
1 |
35 |
71 |
459 |
968 |
813 |
175 |
0 |
| CDI |
0 |
5 |
2 |
245 |
650 |
2153 |
942 |
0 |
| VCDI |
1 |
0 |
0 |
54 |
407 |
12798 |
15490 |
15063 |
|
Date: 2025-10-22:
| 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 |
121690 |
11233 |
866 |
1474 |
232 |
12 |
0 |
0 |
| OW |
25 |
425 |
350 |
1639 |
682 |
146 |
0 |
0 |
| VODI |
19 |
96 |
60 |
1380 |
1144 |
411 |
2 |
0 |
| ODI |
0 |
12 |
4 |
293 |
1271 |
692 |
81 |
0 |
| CDI |
1 |
0 |
0 |
37 |
1209 |
2793 |
650 |
0 |
| VCDI |
1 |
0 |
0 |
1 |
103 |
10984 |
18559 |
16166 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
121673 |
10426 |
707 |
1511 |
621 |
145 |
0 |
0 |
| OW |
41 |
962 |
297 |
1096 |
699 |
581 |
15 |
0 |
| VODI |
18 |
327 |
252 |
1312 |
974 |
851 |
249 |
0 |
| ODI |
2 |
42 |
22 |
644 |
982 |
712 |
434 |
0 |
| CDI |
1 |
8 |
2 |
205 |
840 |
1713 |
954 |
3 |
| VCDI |
1 |
1 |
0 |
56 |
525 |
11036 |
17640 |
16163 |
|
Date: 2025-10-24:
| 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 |
120721 |
10135 |
741 |
1486 |
164 |
12 |
0 |
0 |
| OW |
30 |
301 |
279 |
1462 |
822 |
205 |
4 |
0 |
| VODI |
20 |
59 |
62 |
980 |
1562 |
632 |
91 |
0 |
| ODI |
1 |
2 |
3 |
218 |
1372 |
750 |
162 |
0 |
| CDI |
0 |
0 |
0 |
89 |
1465 |
2176 |
691 |
0 |
| VCDI |
1 |
0 |
0 |
3 |
205 |
11065 |
19838 |
16934 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
120732 |
9622 |
657 |
1225 |
470 |
131 |
3 |
0 |
| OW |
16 |
762 |
320 |
1143 |
701 |
554 |
96 |
0 |
| VODI |
23 |
81 |
101 |
1336 |
1189 |
906 |
370 |
0 |
| ODI |
1 |
19 |
5 |
488 |
1468 |
892 |
555 |
0 |
| CDI |
0 |
11 |
2 |
46 |
1120 |
1692 |
938 |
0 |
| VCDI |
1 |
2 |
0 |
0 |
642 |
10665 |
18824 |
16934 |
|
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