Validation of sea ice concentration - European sector
Bulletin date: 2025-06-12
Data source: OSI SAF N.H. multi-product 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 |
68918 |
10471 |
24 |
6 |
1 |
0 |
0 |
0 |
| OW |
0 |
1921 |
552 |
593 |
22 |
0 |
0 |
0 |
| VODI |
0 |
229 |
216 |
1756 |
644 |
20 |
0 |
0 |
| ODI |
0 |
0 |
0 |
416 |
2194 |
285 |
4 |
0 |
| CDI |
0 |
0 |
0 |
33 |
1062 |
3604 |
1896 |
9 |
| VCDI |
0 |
0 |
0 |
4 |
47 |
523 |
4466 |
500 |
|
...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 |
69824 |
9790 |
32 |
5 |
3 |
0 |
0 |
0 |
| OW |
1 |
2001 |
478 |
682 |
39 |
0 |
0 |
0 |
| VODI |
0 |
250 |
208 |
1675 |
719 |
12 |
0 |
0 |
| ODI |
0 |
4 |
23 |
482 |
1807 |
250 |
4 |
0 |
| CDI |
0 |
0 |
0 |
58 |
958 |
3169 |
2640 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
73 |
261 |
3644 |
1324 |
|
...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 |
70455 |
10242 |
47 |
34 |
0 |
0 |
0 |
0 |
| OW |
32 |
1393 |
582 |
525 |
9 |
0 |
0 |
0 |
| VODI |
0 |
20 |
109 |
2112 |
551 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
250 |
2056 |
158 |
0 |
1 |
| CDI |
0 |
0 |
0 |
16 |
873 |
2729 |
820 |
5 |
| VCDI |
0 |
0 |
0 |
0 |
52 |
538 |
2939 |
3867 |
|
...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 |
69388 |
11441 |
91 |
84 |
1 |
0 |
0 |
0 |
| OW |
79 |
1711 |
445 |
506 |
36 |
0 |
0 |
0 |
| VODI |
0 |
102 |
195 |
1929 |
645 |
2 |
0 |
0 |
| ODI |
0 |
0 |
1 |
321 |
1532 |
213 |
0 |
0 |
| CDI |
0 |
0 |
0 |
34 |
670 |
2112 |
1098 |
4 |
| VCDI |
0 |
0 |
0 |
0 |
20 |
416 |
3842 |
3498 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
69405 |
11596 |
129 |
83 |
1 |
0 |
0 |
0 |
| OW |
62 |
1560 |
407 |
539 |
31 |
0 |
0 |
0 |
| VODI |
0 |
98 |
190 |
1868 |
625 |
5 |
0 |
0 |
| ODI |
0 |
0 |
6 |
332 |
1511 |
240 |
0 |
0 |
| CDI |
0 |
0 |
0 |
52 |
717 |
2073 |
1328 |
4 |
| VCDI |
0 |
0 |
0 |
0 |
19 |
425 |
3612 |
3498 |
|
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 |
69874 |
11181 |
76 |
86 |
10 |
0 |
0 |
0 |
| OW |
0 |
2040 |
346 |
401 |
52 |
0 |
0 |
0 |
| VODI |
0 |
199 |
245 |
1784 |
623 |
11 |
0 |
0 |
| ODI |
0 |
1 |
6 |
498 |
1135 |
239 |
2 |
0 |
| CDI |
0 |
0 |
0 |
40 |
765 |
1831 |
1596 |
12 |
| VCDI |
0 |
0 |
0 |
0 |
21 |
303 |
3757 |
3282 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
69874 |
11373 |
86 |
86 |
2 |
0 |
0 |
0 |
| OW |
0 |
1831 |
346 |
423 |
51 |
0 |
0 |
0 |
| VODI |
0 |
210 |
225 |
1716 |
554 |
16 |
0 |
0 |
| ODI |
0 |
7 |
15 |
516 |
1135 |
268 |
8 |
0 |
| CDI |
0 |
0 |
1 |
68 |
841 |
1815 |
2117 |
43 |
| VCDI |
0 |
0 |
0 |
0 |
23 |
285 |
3230 |
3251 |
|
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 |
71473 |
10499 |
50 |
80 |
1 |
0 |
0 |
0 |
| OW |
73 |
1576 |
566 |
358 |
25 |
0 |
0 |
0 |
| VODI |
0 |
10 |
60 |
2183 |
400 |
3 |
1 |
0 |
| ODI |
0 |
0 |
0 |
150 |
1654 |
91 |
0 |
0 |
| CDI |
0 |
0 |
0 |
1 |
488 |
1622 |
185 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
212 |
4369 |
4286 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
71333 |
9811 |
54 |
70 |
0 |
0 |
0 |
0 |
| OW |
201 |
1807 |
276 |
396 |
57 |
0 |
0 |
0 |
| VODI |
12 |
441 |
304 |
1613 |
486 |
29 |
1 |
0 |
| ODI |
0 |
24 |
31 |
550 |
1090 |
350 |
47 |
0 |
| CDI |
0 |
2 |
11 |
143 |
934 |
1462 |
2205 |
59 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
87 |
2302 |
4227 |
|
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 |
72503 |
9636 |
39 |
38 |
0 |
0 |
0 |
0 |
| OW |
256 |
1518 |
486 |
397 |
9 |
0 |
0 |
0 |
| VODI |
0 |
202 |
180 |
2017 |
359 |
3 |
0 |
0 |
| ODI |
0 |
0 |
1 |
267 |
1093 |
145 |
1 |
0 |
| CDI |
0 |
0 |
0 |
14 |
747 |
1498 |
354 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
24 |
354 |
4802 |
3473 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
72292 |
9056 |
66 |
37 |
0 |
0 |
0 |
0 |
| OW |
417 |
1727 |
323 |
493 |
19 |
0 |
0 |
0 |
| VODI |
50 |
535 |
263 |
1517 |
476 |
51 |
1 |
0 |
| ODI |
0 |
37 |
41 |
563 |
899 |
325 |
9 |
0 |
| CDI |
0 |
1 |
13 |
123 |
818 |
1353 |
1795 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
20 |
271 |
3352 |
3473 |
|
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 |
72654 |
9673 |
57 |
21 |
0 |
0 |
0 |
0 |
| OW |
52 |
1905 |
387 |
347 |
12 |
0 |
0 |
0 |
| VODI |
0 |
342 |
297 |
1695 |
304 |
3 |
0 |
0 |
| ODI |
0 |
0 |
8 |
408 |
940 |
120 |
0 |
1 |
| CDI |
0 |
0 |
0 |
73 |
787 |
1340 |
329 |
41 |
| VCDI |
0 |
0 |
0 |
3 |
59 |
574 |
4065 |
3919 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
72471 |
9057 |
80 |
31 |
0 |
0 |
0 |
0 |
| OW |
235 |
2161 |
306 |
402 |
39 |
0 |
0 |
0 |
| VODI |
0 |
634 |
278 |
1334 |
435 |
50 |
0 |
0 |
| ODI |
0 |
61 |
68 |
553 |
792 |
313 |
37 |
1 |
| CDI |
0 |
7 |
17 |
227 |
748 |
1328 |
1599 |
105 |
| VCDI |
0 |
0 |
0 |
0 |
88 |
346 |
2758 |
3855 |
|
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