Validation of sea ice concentration - European sector
Bulletin date: 2025-06-05
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-05-30:
| 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 |
64928 |
11159 |
44 |
16 |
2 |
0 |
0 |
0 |
| OW |
881 |
1736 |
474 |
556 |
104 |
8 |
1 |
0 |
| VODI |
2469 |
369 |
321 |
1362 |
692 |
117 |
2 |
0 |
| ODI |
1082 |
34 |
41 |
545 |
1701 |
638 |
54 |
0 |
| CDI |
0 |
8 |
18 |
135 |
1035 |
2777 |
2026 |
0 |
| VCDI |
0 |
4 |
2 |
1 |
10 |
966 |
5817 |
727 |
|
...date precedes bulletin
|
Date: 2025-06-01:
| 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 |
64902 |
11022 |
67 |
29 |
9 |
0 |
0 |
0 |
| OW |
915 |
1820 |
586 |
673 |
108 |
2 |
0 |
0 |
| VODI |
2567 |
435 |
296 |
1404 |
779 |
66 |
1 |
0 |
| ODI |
977 |
52 |
65 |
629 |
1530 |
449 |
52 |
0 |
| CDI |
0 |
9 |
18 |
166 |
1567 |
2791 |
1685 |
0 |
| VCDI |
0 |
0 |
1 |
0 |
2 |
1433 |
5125 |
630 |
|
...date precedes bulletin
|
Date: 2025-06-03:
| 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 |
64678 |
12303 |
105 |
52 |
2 |
0 |
0 |
0 |
| OW |
894 |
1595 |
585 |
646 |
61 |
1 |
0 |
0 |
| VODI |
2769 |
135 |
261 |
1795 |
670 |
38 |
0 |
0 |
| ODI |
759 |
2 |
16 |
348 |
2075 |
409 |
15 |
0 |
| CDI |
0 |
9 |
10 |
65 |
1289 |
4197 |
1043 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
807 |
5067 |
157 |
|
...date precedes bulletin
|
Date: 2025-06-05:
| 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 |
66022 |
11479 |
61 |
15 |
1 |
0 |
0 |
0 |
| OW |
900 |
1924 |
452 |
532 |
65 |
5 |
1 |
0 |
| VODI |
3013 |
318 |
329 |
1405 |
718 |
47 |
2 |
0 |
| ODI |
506 |
11 |
21 |
366 |
1880 |
489 |
30 |
0 |
| CDI |
0 |
9 |
7 |
65 |
1054 |
4240 |
1474 |
2 |
| VCDI |
0 |
2 |
1 |
2 |
30 |
751 |
4201 |
432 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
66022 |
11541 |
65 |
15 |
0 |
0 |
0 |
0 |
| OW |
900 |
1869 |
461 |
578 |
75 |
6 |
1 |
0 |
| VODI |
2995 |
312 |
317 |
1337 |
705 |
51 |
1 |
0 |
| ODI |
524 |
10 |
20 |
382 |
1817 |
470 |
30 |
0 |
| CDI |
0 |
11 |
8 |
73 |
1117 |
4213 |
1422 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
34 |
792 |
4254 |
434 |
|
Date: 2025-06-07:
| 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 |
67150 |
10705 |
17 |
20 |
4 |
0 |
0 |
0 |
| OW |
908 |
2084 |
394 |
497 |
95 |
8 |
0 |
0 |
| VODI |
3509 |
377 |
334 |
1296 |
732 |
56 |
0 |
0 |
| ODI |
0 |
44 |
41 |
529 |
1559 |
514 |
27 |
0 |
| CDI |
0 |
0 |
2 |
68 |
819 |
3942 |
1803 |
0 |
| VCDI |
0 |
2 |
11 |
24 |
25 |
726 |
4399 |
141 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67150 |
10767 |
32 |
27 |
8 |
0 |
0 |
0 |
| OW |
908 |
2018 |
393 |
533 |
112 |
10 |
0 |
0 |
| VODI |
3509 |
392 |
319 |
1264 |
701 |
59 |
0 |
0 |
| ODI |
0 |
33 |
41 |
516 |
1478 |
459 |
28 |
0 |
| CDI |
0 |
0 |
8 |
89 |
929 |
3946 |
1806 |
0 |
| VCDI |
0 |
2 |
6 |
5 |
6 |
772 |
4395 |
141 |
|
Date: 2025-06-09:
| 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 |
67308 |
11569 |
66 |
31 |
5 |
0 |
0 |
0 |
| OW |
927 |
1473 |
464 |
471 |
71 |
3 |
0 |
0 |
| VODI |
3488 |
141 |
247 |
1530 |
728 |
16 |
0 |
0 |
| ODI |
0 |
0 |
8 |
397 |
1703 |
484 |
11 |
0 |
| CDI |
0 |
0 |
1 |
38 |
542 |
2863 |
755 |
0 |
| VCDI |
0 |
0 |
0 |
12 |
19 |
746 |
6098 |
647 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67307 |
10799 |
48 |
14 |
8 |
0 |
0 |
0 |
| OW |
925 |
1954 |
458 |
638 |
109 |
2 |
0 |
0 |
| VODI |
3491 |
364 |
221 |
1208 |
843 |
81 |
0 |
0 |
| ODI |
0 |
63 |
51 |
487 |
1200 |
440 |
34 |
0 |
| CDI |
0 |
3 |
8 |
121 |
890 |
3200 |
2605 |
0 |
| VCDI |
0 |
0 |
0 |
11 |
18 |
389 |
4225 |
647 |
|
Date: 2025-06-11:
| 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 |
67290 |
11786 |
59 |
52 |
5 |
0 |
0 |
0 |
| OW |
936 |
1678 |
369 |
440 |
63 |
4 |
0 |
0 |
| VODI |
3476 |
301 |
278 |
1542 |
702 |
29 |
0 |
0 |
| ODI |
0 |
28 |
31 |
338 |
1307 |
476 |
12 |
0 |
| CDI |
0 |
0 |
3 |
35 |
563 |
2320 |
1155 |
0 |
| VCDI |
0 |
0 |
0 |
11 |
45 |
664 |
6279 |
585 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67289 |
11025 |
54 |
67 |
11 |
0 |
0 |
0 |
| OW |
934 |
2113 |
328 |
560 |
102 |
4 |
0 |
0 |
| VODI |
3479 |
528 |
288 |
1263 |
713 |
137 |
0 |
0 |
| ODI |
0 |
101 |
42 |
412 |
989 |
376 |
51 |
0 |
| CDI |
0 |
26 |
28 |
106 |
828 |
2629 |
2554 |
0 |
| VCDI |
0 |
0 |
0 |
10 |
42 |
347 |
4841 |
585 |
|
Date: 2025-06-13:
| 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 |
67092 |
12315 |
88 |
56 |
4 |
0 |
0 |
0 |
| OW |
945 |
1942 |
325 |
364 |
70 |
4 |
0 |
0 |
| VODI |
3466 |
350 |
284 |
1428 |
643 |
61 |
0 |
0 |
| ODI |
0 |
37 |
47 |
350 |
969 |
471 |
31 |
0 |
| CDI |
0 |
0 |
5 |
85 |
534 |
1439 |
1847 |
3 |
| VCDI |
0 |
0 |
0 |
9 |
19 |
771 |
5767 |
1041 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67091 |
11607 |
106 |
91 |
16 |
0 |
0 |
0 |
| OW |
941 |
2216 |
289 |
427 |
94 |
12 |
0 |
0 |
| VODI |
3471 |
608 |
255 |
1107 |
630 |
144 |
8 |
0 |
| ODI |
0 |
138 |
74 |
510 |
760 |
313 |
68 |
0 |
| CDI |
0 |
75 |
25 |
149 |
721 |
1673 |
3198 |
4 |
| VCDI |
0 |
0 |
0 |
8 |
18 |
604 |
4371 |
1040 |
|
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