Validation of sea ice concentration - European sector
Bulletin date: 2025-06-05
Data source: OSI SAF N.H. multi-product 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 |
66904 |
10766 |
83 |
47 |
0 |
0 |
0 |
0 |
| OW |
41 |
1476 |
594 |
740 |
71 |
1 |
0 |
0 |
| VODI |
0 |
54 |
166 |
2057 |
654 |
14 |
0 |
0 |
| ODI |
0 |
4 |
4 |
382 |
2442 |
250 |
0 |
0 |
| CDI |
0 |
0 |
1 |
79 |
1437 |
2781 |
1694 |
62 |
| VCDI |
0 |
0 |
0 |
5 |
11 |
643 |
4156 |
2797 |
|
...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 |
67424 |
10169 |
58 |
27 |
0 |
0 |
0 |
0 |
| OW |
27 |
1802 |
511 |
874 |
65 |
0 |
0 |
0 |
| VODI |
0 |
203 |
252 |
1881 |
717 |
1 |
0 |
0 |
| ODI |
0 |
7 |
22 |
565 |
2040 |
202 |
0 |
0 |
| CDI |
0 |
0 |
4 |
132 |
1950 |
2664 |
1557 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
35 |
1205 |
4117 |
1904 |
|
...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 |
67922 |
10783 |
78 |
20 |
0 |
0 |
0 |
0 |
| OW |
0 |
1431 |
708 |
790 |
11 |
0 |
0 |
0 |
| VODI |
0 |
23 |
112 |
2375 |
459 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
288 |
2537 |
71 |
0 |
0 |
| CDI |
0 |
0 |
0 |
43 |
1623 |
4149 |
869 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
525 |
4613 |
986 |
|
...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 |
68849 |
10339 |
37 |
11 |
0 |
0 |
0 |
0 |
| OW |
0 |
1716 |
616 |
684 |
21 |
0 |
0 |
0 |
| VODI |
0 |
169 |
206 |
1947 |
542 |
17 |
0 |
0 |
| ODI |
0 |
0 |
1 |
301 |
2340 |
206 |
4 |
0 |
| CDI |
0 |
0 |
0 |
37 |
1257 |
4239 |
1352 |
19 |
| VCDI |
0 |
0 |
0 |
0 |
20 |
602 |
3655 |
1229 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
68849 |
10384 |
51 |
19 |
0 |
0 |
0 |
0 |
| OW |
0 |
1681 |
602 |
740 |
24 |
0 |
0 |
0 |
| VODI |
0 |
159 |
205 |
1870 |
537 |
16 |
0 |
0 |
| ODI |
0 |
0 |
2 |
320 |
2226 |
231 |
4 |
0 |
| CDI |
0 |
0 |
0 |
31 |
1374 |
4163 |
1317 |
10 |
| VCDI |
0 |
0 |
0 |
0 |
19 |
654 |
3690 |
1238 |
|
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 |
69873 |
9649 |
35 |
7 |
3 |
0 |
0 |
0 |
| OW |
58 |
1929 |
444 |
680 |
20 |
1 |
0 |
0 |
| VODI |
0 |
257 |
219 |
1709 |
663 |
15 |
0 |
0 |
| ODI |
0 |
2 |
6 |
520 |
1970 |
245 |
10 |
0 |
| CDI |
0 |
0 |
0 |
37 |
1006 |
3582 |
2051 |
9 |
| VCDI |
0 |
0 |
0 |
0 |
68 |
411 |
3948 |
989 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
69861 |
9697 |
67 |
23 |
7 |
0 |
0 |
0 |
| OW |
70 |
1864 |
416 |
754 |
23 |
1 |
0 |
0 |
| VODI |
0 |
273 |
214 |
1640 |
653 |
20 |
0 |
0 |
| ODI |
0 |
3 |
7 |
500 |
1827 |
240 |
9 |
0 |
| CDI |
0 |
0 |
0 |
36 |
1199 |
3571 |
2029 |
2 |
| VCDI |
0 |
0 |
0 |
0 |
21 |
422 |
3971 |
996 |
|
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 |
70025 |
10568 |
36 |
22 |
5 |
0 |
0 |
0 |
| OW |
0 |
1343 |
618 |
572 |
21 |
0 |
0 |
0 |
| VODI |
0 |
12 |
64 |
2180 |
442 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
169 |
2335 |
133 |
0 |
0 |
| CDI |
0 |
0 |
0 |
2 |
669 |
3075 |
503 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
33 |
159 |
3906 |
3523 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
70024 |
9732 |
50 |
23 |
12 |
0 |
0 |
0 |
| OW |
1 |
1952 |
451 |
800 |
43 |
0 |
0 |
0 |
| VODI |
0 |
228 |
180 |
1592 |
741 |
21 |
0 |
0 |
| ODI |
0 |
11 |
37 |
458 |
1550 |
246 |
10 |
0 |
| CDI |
0 |
0 |
0 |
72 |
1137 |
2871 |
2613 |
191 |
| VCDI |
0 |
0 |
0 |
0 |
22 |
230 |
1786 |
3332 |
|
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 |
70777 |
9976 |
62 |
48 |
0 |
0 |
0 |
0 |
| OW |
86 |
1434 |
550 |
547 |
25 |
0 |
0 |
0 |
| VODI |
0 |
95 |
161 |
1948 |
682 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
252 |
1801 |
175 |
0 |
1 |
| CDI |
0 |
0 |
0 |
27 |
814 |
2591 |
683 |
8 |
| VCDI |
0 |
0 |
0 |
0 |
27 |
370 |
3273 |
4003 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
70732 |
9231 |
62 |
94 |
3 |
0 |
0 |
0 |
| OW |
131 |
1933 |
407 |
667 |
50 |
0 |
0 |
0 |
| VODI |
0 |
300 |
253 |
1498 |
907 |
16 |
0 |
0 |
| ODI |
0 |
41 |
42 |
457 |
1244 |
218 |
5 |
1 |
| CDI |
0 |
0 |
9 |
106 |
1118 |
2674 |
2294 |
26 |
| VCDI |
0 |
0 |
0 |
0 |
27 |
228 |
1657 |
3985 |
|
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 |
69380 |
11663 |
98 |
85 |
6 |
0 |
0 |
0 |
| OW |
81 |
1968 |
388 |
313 |
34 |
0 |
0 |
0 |
| VODI |
0 |
180 |
263 |
1827 |
529 |
2 |
0 |
0 |
| ODI |
0 |
2 |
13 |
417 |
1285 |
226 |
0 |
0 |
| CDI |
0 |
0 |
0 |
61 |
738 |
1846 |
1310 |
29 |
| VCDI |
0 |
0 |
0 |
0 |
24 |
395 |
3629 |
3624 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
69394 |
10939 |
119 |
115 |
21 |
0 |
0 |
0 |
| OW |
67 |
2306 |
294 |
387 |
66 |
0 |
0 |
0 |
| VODI |
0 |
456 |
292 |
1394 |
618 |
34 |
0 |
0 |
| ODI |
0 |
92 |
21 |
632 |
921 |
229 |
7 |
1 |
| CDI |
0 |
20 |
36 |
175 |
965 |
1982 |
2504 |
254 |
| VCDI |
0 |
0 |
0 |
0 |
25 |
224 |
2428 |
3398 |
|
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