Validation of sea ice concentration - European sector
Bulletin date: 2025-06-12
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-06-06:
| 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 |
66843 |
10879 |
28 |
5 |
1 |
0 |
0 |
0 |
| OW |
907 |
2067 |
446 |
432 |
79 |
12 |
0 |
0 |
| VODI |
3511 |
368 |
305 |
1301 |
759 |
59 |
1 |
0 |
| ODI |
0 |
13 |
39 |
415 |
1834 |
527 |
24 |
0 |
| CDI |
0 |
0 |
0 |
50 |
917 |
3807 |
1778 |
0 |
| VCDI |
0 |
10 |
10 |
14 |
31 |
763 |
4365 |
262 |
|
...date precedes bulletin
|
Date: 2025-06-08:
| 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 |
67157 |
10787 |
27 |
10 |
4 |
0 |
0 |
0 |
| OW |
916 |
2137 |
376 |
509 |
101 |
6 |
0 |
0 |
| VODI |
3500 |
421 |
297 |
1232 |
804 |
63 |
0 |
0 |
| ODI |
0 |
52 |
52 |
530 |
1407 |
462 |
29 |
0 |
| CDI |
0 |
0 |
5 |
94 |
785 |
3594 |
2281 |
0 |
| VCDI |
0 |
0 |
7 |
28 |
32 |
495 |
4349 |
313 |
|
...date precedes bulletin
|
Date: 2025-06-10:
| 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 |
66610 |
12374 |
75 |
48 |
1 |
0 |
0 |
0 |
| OW |
932 |
1509 |
421 |
459 |
58 |
3 |
0 |
0 |
| VODI |
3481 |
199 |
247 |
1545 |
755 |
24 |
0 |
0 |
| ODI |
0 |
4 |
15 |
338 |
1509 |
546 |
10 |
0 |
| CDI |
0 |
0 |
0 |
36 |
605 |
2590 |
1165 |
0 |
| VCDI |
0 |
0 |
0 |
13 |
53 |
652 |
5943 |
642 |
|
...date precedes bulletin
|
Date: 2025-06-12:
| 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 |
67393 |
11821 |
59 |
55 |
5 |
0 |
0 |
0 |
| OW |
938 |
1886 |
366 |
370 |
69 |
4 |
0 |
0 |
| VODI |
3473 |
326 |
283 |
1533 |
668 |
26 |
0 |
0 |
| ODI |
0 |
20 |
35 |
351 |
1174 |
443 |
11 |
0 |
| CDI |
0 |
0 |
1 |
62 |
468 |
1857 |
1482 |
0 |
| VCDI |
0 |
0 |
0 |
7 |
31 |
667 |
5814 |
1164 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67393 |
11998 |
71 |
65 |
5 |
0 |
0 |
0 |
| OW |
937 |
1714 |
362 |
377 |
68 |
3 |
0 |
0 |
| VODI |
3474 |
313 |
281 |
1500 |
639 |
21 |
0 |
0 |
| ODI |
0 |
28 |
21 |
351 |
1186 |
449 |
19 |
0 |
| CDI |
0 |
0 |
9 |
77 |
483 |
1862 |
1692 |
0 |
| VCDI |
0 |
0 |
0 |
8 |
34 |
662 |
5596 |
1164 |
|
Date: 2025-06-14:
| 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 |
67874 |
11597 |
91 |
48 |
6 |
0 |
0 |
0 |
| OW |
1028 |
1994 |
335 |
347 |
79 |
5 |
0 |
0 |
| VODI |
3314 |
402 |
266 |
1428 |
654 |
68 |
3 |
0 |
| ODI |
0 |
48 |
58 |
393 |
931 |
356 |
59 |
0 |
| CDI |
0 |
2 |
3 |
105 |
548 |
1385 |
2116 |
1 |
| VCDI |
0 |
0 |
0 |
10 |
19 |
438 |
4184 |
2667 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67874 |
11770 |
95 |
61 |
1 |
0 |
0 |
0 |
| OW |
1028 |
1811 |
331 |
359 |
75 |
2 |
0 |
0 |
| VODI |
3314 |
392 |
273 |
1357 |
594 |
69 |
2 |
0 |
| ODI |
0 |
61 |
43 |
413 |
964 |
362 |
67 |
0 |
| CDI |
0 |
9 |
11 |
126 |
592 |
1385 |
2662 |
5 |
| VCDI |
0 |
0 |
0 |
15 |
11 |
434 |
3631 |
2663 |
|
Date: 2025-06-16:
| 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 |
68651 |
11625 |
105 |
62 |
7 |
0 |
0 |
0 |
| OW |
1040 |
1664 |
467 |
391 |
28 |
2 |
0 |
0 |
| VODI |
3299 |
160 |
225 |
1637 |
560 |
27 |
0 |
0 |
| ODI |
0 |
5 |
4 |
279 |
1188 |
369 |
26 |
0 |
| CDI |
0 |
0 |
3 |
38 |
366 |
1134 |
714 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
33 |
337 |
6566 |
1850 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
68651 |
10845 |
84 |
54 |
2 |
0 |
0 |
0 |
| OW |
1040 |
1915 |
341 |
347 |
66 |
5 |
0 |
0 |
| VODI |
3299 |
604 |
324 |
1322 |
513 |
71 |
0 |
0 |
| ODI |
0 |
72 |
40 |
497 |
893 |
443 |
112 |
0 |
| CDI |
0 |
18 |
15 |
187 |
707 |
1155 |
2663 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
195 |
4531 |
1850 |
|
Date: 2025-06-18:
| 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 |
69106 |
11330 |
80 |
38 |
4 |
2 |
0 |
0 |
| OW |
1045 |
1793 |
415 |
383 |
24 |
0 |
0 |
0 |
| VODI |
3291 |
290 |
338 |
1505 |
551 |
40 |
0 |
0 |
| ODI |
0 |
10 |
19 |
322 |
766 |
362 |
9 |
0 |
| CDI |
0 |
6 |
8 |
82 |
468 |
1132 |
856 |
0 |
| VCDI |
0 |
0 |
0 |
7 |
56 |
311 |
5632 |
2581 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
69107 |
10593 |
75 |
29 |
6 |
0 |
0 |
0 |
| OW |
1048 |
2145 |
357 |
360 |
58 |
3 |
0 |
0 |
| VODI |
3287 |
588 |
342 |
1237 |
524 |
149 |
7 |
0 |
| ODI |
0 |
77 |
59 |
506 |
698 |
441 |
63 |
0 |
| CDI |
0 |
26 |
27 |
204 |
548 |
945 |
2281 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
35 |
309 |
4146 |
2581 |
|
Date: 2025-06-20:
| 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 |
70279 |
10396 |
51 |
17 |
2 |
0 |
0 |
0 |
| OW |
1082 |
1825 |
409 |
378 |
22 |
0 |
0 |
0 |
| VODI |
3275 |
432 |
322 |
1322 |
483 |
42 |
0 |
0 |
| ODI |
0 |
33 |
39 |
334 |
757 |
272 |
21 |
0 |
| CDI |
0 |
11 |
17 |
127 |
480 |
1115 |
762 |
0 |
| VCDI |
0 |
3 |
6 |
20 |
63 |
389 |
5175 |
2901 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
70156 |
9736 |
69 |
27 |
2 |
0 |
0 |
0 |
| OW |
1206 |
2148 |
350 |
398 |
40 |
0 |
0 |
0 |
| VODI |
3274 |
655 |
305 |
1063 |
520 |
141 |
11 |
0 |
| ODI |
0 |
114 |
83 |
451 |
657 |
369 |
113 |
0 |
| CDI |
0 |
47 |
37 |
240 |
534 |
1003 |
2022 |
81 |
| VCDI |
0 |
0 |
0 |
19 |
54 |
305 |
3812 |
2820 |
|
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