Validation of sea ice concentration - European sector
Bulletin date: 2025-06-26
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
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 |
|
...date precedes bulletin
|
Date: 2025-06-22:
| 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 |
73405 |
8699 |
52 |
21 |
0 |
0 |
0 |
0 |
| OW |
180 |
2144 |
315 |
340 |
7 |
0 |
0 |
0 |
| VODI |
0 |
460 |
295 |
1489 |
294 |
1 |
0 |
0 |
| ODI |
0 |
2 |
21 |
418 |
980 |
71 |
9 |
0 |
| CDI |
0 |
0 |
0 |
123 |
903 |
1427 |
370 |
1 |
| VCDI |
0 |
0 |
0 |
4 |
78 |
1174 |
4289 |
2844 |
|
...date precedes bulletin
|
Date: 2025-06-24:
| 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 |
73685 |
9431 |
54 |
34 |
0 |
0 |
0 |
0 |
| OW |
77 |
1962 |
528 |
389 |
4 |
0 |
0 |
0 |
| VODI |
0 |
16 |
91 |
1586 |
311 |
1 |
0 |
1 |
| ODI |
0 |
0 |
0 |
196 |
1357 |
64 |
1 |
0 |
| CDI |
0 |
0 |
0 |
74 |
622 |
1531 |
285 |
7 |
| VCDI |
0 |
0 |
0 |
1 |
17 |
423 |
3691 |
3977 |
|
...date precedes bulletin
|
Date: 2025-06-26:
| 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 |
74404 |
9027 |
56 |
34 |
0 |
0 |
0 |
0 |
| OW |
81 |
2073 |
370 |
332 |
14 |
2 |
0 |
0 |
| VODI |
0 |
113 |
198 |
1270 |
329 |
8 |
0 |
0 |
| ODI |
0 |
0 |
7 |
297 |
1075 |
62 |
14 |
0 |
| CDI |
0 |
0 |
0 |
175 |
974 |
1619 |
241 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
18 |
2136 |
3852 |
1635 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
74419 |
9125 |
63 |
47 |
0 |
0 |
0 |
0 |
| OW |
66 |
1958 |
343 |
300 |
16 |
1 |
0 |
0 |
| VODI |
0 |
130 |
220 |
1298 |
363 |
9 |
0 |
0 |
| ODI |
0 |
0 |
5 |
288 |
1074 |
73 |
20 |
0 |
| CDI |
0 |
0 |
0 |
174 |
924 |
1637 |
429 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
33 |
2107 |
3658 |
1635 |
|
Date: 2025-06-28:
| 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 |
75680 |
8426 |
52 |
13 |
0 |
0 |
0 |
0 |
| OW |
122 |
1941 |
295 |
256 |
9 |
0 |
0 |
0 |
| VODI |
0 |
239 |
200 |
987 |
185 |
2 |
1 |
0 |
| ODI |
0 |
4 |
25 |
424 |
990 |
30 |
13 |
5 |
| CDI |
0 |
0 |
0 |
267 |
1368 |
952 |
308 |
8 |
| VCDI |
0 |
0 |
0 |
0 |
56 |
1915 |
4034 |
1609 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
75682 |
8446 |
64 |
22 |
0 |
0 |
0 |
0 |
| OW |
120 |
1893 |
277 |
240 |
8 |
0 |
0 |
0 |
| VODI |
0 |
271 |
210 |
1024 |
200 |
2 |
1 |
0 |
| ODI |
0 |
0 |
21 |
381 |
1007 |
42 |
25 |
6 |
| CDI |
0 |
0 |
0 |
280 |
1210 |
1041 |
477 |
5 |
| VCDI |
0 |
0 |
0 |
0 |
183 |
1814 |
3853 |
1611 |
|
Date: 2025-06-30:
| 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 |
76326 |
8462 |
35 |
37 |
0 |
0 |
0 |
0 |
| OW |
346 |
1447 |
247 |
210 |
10 |
2 |
0 |
0 |
| VODI |
27 |
331 |
187 |
785 |
236 |
2 |
1 |
0 |
| ODI |
0 |
34 |
59 |
351 |
849 |
74 |
1 |
10 |
| CDI |
0 |
0 |
8 |
346 |
1201 |
1234 |
252 |
8 |
| VCDI |
0 |
0 |
0 |
6 |
84 |
1115 |
3282 |
2811 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
76343 |
8354 |
26 |
32 |
0 |
0 |
0 |
0 |
| OW |
334 |
1509 |
236 |
221 |
7 |
3 |
0 |
0 |
| VODI |
22 |
370 |
205 |
797 |
234 |
1 |
1 |
0 |
| ODI |
0 |
41 |
60 |
351 |
920 |
91 |
4 |
9 |
| CDI |
0 |
0 |
9 |
329 |
1145 |
1283 |
371 |
14 |
| VCDI |
0 |
0 |
0 |
5 |
74 |
1049 |
3160 |
2806 |
|
Date: 2025-07-02:
| 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 |
76438 |
9563 |
86 |
41 |
0 |
0 |
0 |
0 |
| OW |
14 |
1177 |
397 |
398 |
7 |
0 |
0 |
0 |
| VODI |
0 |
22 |
95 |
931 |
254 |
1 |
1 |
0 |
| ODI |
0 |
0 |
0 |
303 |
1177 |
23 |
11 |
0 |
| CDI |
0 |
0 |
0 |
39 |
1550 |
1066 |
82 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
209 |
1685 |
4133 |
713 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
76405 |
8538 |
46 |
22 |
0 |
0 |
0 |
0 |
| OW |
47 |
1712 |
201 |
200 |
19 |
1 |
0 |
0 |
| VODI |
0 |
454 |
249 |
677 |
241 |
0 |
5 |
0 |
| ODI |
0 |
53 |
61 |
430 |
901 |
179 |
10 |
0 |
| CDI |
0 |
5 |
21 |
365 |
1624 |
961 |
325 |
0 |
| VCDI |
0 |
0 |
0 |
18 |
412 |
1634 |
3887 |
713 |
|
Date: 2025-07-04:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
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