Validation of sea ice concentration - European sector
Bulletin date: 2025-04-10
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-04-04:
| 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 |
59839 |
13550 |
434 |
446 |
70 |
0 |
0 |
0 |
| OW |
0 |
568 |
165 |
824 |
199 |
13 |
0 |
0 |
| VODI |
0 |
189 |
74 |
541 |
620 |
60 |
0 |
0 |
| ODI |
0 |
33 |
31 |
167 |
680 |
306 |
0 |
0 |
| CDI |
0 |
12 |
19 |
189 |
791 |
2315 |
489 |
0 |
| VCDI |
0 |
4 |
5 |
39 |
283 |
3769 |
7946 |
5746 |
|
...date precedes bulletin
|
Date: 2025-04-06:
| 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 |
59305 |
13770 |
336 |
436 |
78 |
1 |
0 |
0 |
| OW |
29 |
578 |
234 |
714 |
217 |
15 |
0 |
0 |
| VODI |
3 |
195 |
76 |
598 |
593 |
63 |
4 |
0 |
| ODI |
3 |
34 |
39 |
250 |
641 |
277 |
19 |
0 |
| CDI |
1 |
25 |
9 |
178 |
1119 |
2623 |
706 |
0 |
| VCDI |
5 |
1 |
5 |
25 |
101 |
1924 |
8896 |
6290 |
|
...date precedes bulletin
|
Date: 2025-04-08:
| 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 |
59267 |
14060 |
269 |
626 |
91 |
0 |
0 |
0 |
| OW |
9 |
607 |
222 |
720 |
299 |
8 |
0 |
0 |
| VODI |
0 |
56 |
96 |
659 |
711 |
81 |
0 |
0 |
| ODI |
0 |
3 |
2 |
257 |
973 |
350 |
0 |
0 |
| CDI |
0 |
1 |
0 |
71 |
961 |
2741 |
424 |
0 |
| VCDI |
0 |
4 |
0 |
0 |
173 |
2631 |
8557 |
5487 |
|
...date precedes bulletin
|
Date: 2025-04-10:
| 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 |
59681 |
13891 |
330 |
443 |
22 |
0 |
0 |
0 |
| OW |
21 |
627 |
239 |
745 |
239 |
13 |
0 |
0 |
| VODI |
9 |
121 |
107 |
621 |
702 |
72 |
0 |
0 |
| ODI |
7 |
9 |
17 |
287 |
926 |
336 |
1 |
0 |
| CDI |
4 |
0 |
0 |
116 |
1132 |
2330 |
260 |
0 |
| VCDI |
5 |
0 |
0 |
30 |
250 |
2830 |
8482 |
5511 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59689 |
13957 |
330 |
442 |
28 |
0 |
0 |
0 |
| OW |
13 |
592 |
254 |
781 |
246 |
12 |
0 |
0 |
| VODI |
9 |
90 |
92 |
610 |
705 |
63 |
0 |
0 |
| ODI |
6 |
9 |
17 |
276 |
965 |
368 |
1 |
0 |
| CDI |
5 |
0 |
0 |
101 |
1079 |
2418 |
279 |
0 |
| VCDI |
5 |
0 |
0 |
32 |
248 |
2720 |
8463 |
5511 |
|
Date: 2025-04-12:
| 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 |
58963 |
14366 |
328 |
468 |
80 |
1 |
0 |
0 |
| OW |
19 |
511 |
248 |
792 |
337 |
17 |
0 |
0 |
| VODI |
11 |
97 |
87 |
610 |
628 |
124 |
1 |
0 |
| ODI |
9 |
13 |
12 |
330 |
802 |
489 |
14 |
0 |
| CDI |
6 |
0 |
0 |
109 |
1186 |
2321 |
739 |
0 |
| VCDI |
2 |
0 |
0 |
2 |
255 |
2456 |
8113 |
5870 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
58970 |
14424 |
340 |
484 |
83 |
1 |
0 |
0 |
| OW |
13 |
475 |
259 |
785 |
343 |
15 |
0 |
0 |
| VODI |
9 |
76 |
66 |
630 |
644 |
124 |
1 |
0 |
| ODI |
8 |
12 |
10 |
307 |
861 |
538 |
57 |
0 |
| CDI |
8 |
0 |
0 |
103 |
1127 |
2379 |
716 |
0 |
| VCDI |
2 |
0 |
0 |
2 |
230 |
2351 |
8093 |
5870 |
|
Date: 2025-04-14:
| 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 |
59060 |
14427 |
410 |
471 |
74 |
0 |
0 |
0 |
| OW |
15 |
447 |
236 |
786 |
331 |
8 |
0 |
0 |
| VODI |
8 |
105 |
38 |
572 |
569 |
123 |
0 |
0 |
| ODI |
5 |
15 |
19 |
330 |
819 |
594 |
72 |
0 |
| CDI |
6 |
1 |
2 |
162 |
1196 |
2376 |
963 |
0 |
| VCDI |
2 |
0 |
0 |
8 |
285 |
1802 |
7727 |
6352 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59052 |
14362 |
352 |
421 |
62 |
0 |
0 |
0 |
| OW |
21 |
523 |
289 |
770 |
297 |
5 |
0 |
0 |
| VODI |
10 |
89 |
50 |
675 |
627 |
107 |
0 |
0 |
| ODI |
5 |
19 |
11 |
313 |
888 |
644 |
25 |
0 |
| CDI |
6 |
2 |
3 |
136 |
1116 |
2319 |
1097 |
0 |
| VCDI |
2 |
0 |
0 |
14 |
284 |
1828 |
7640 |
6352 |
|
Date: 2025-04-16:
| 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 |
59942 |
13895 |
447 |
466 |
27 |
0 |
0 |
0 |
| OW |
7 |
418 |
258 |
676 |
247 |
3 |
0 |
0 |
| VODI |
7 |
101 |
64 |
720 |
646 |
112 |
1 |
0 |
| ODI |
4 |
11 |
5 |
376 |
1005 |
517 |
9 |
0 |
| CDI |
4 |
0 |
0 |
57 |
752 |
2667 |
1153 |
0 |
| VCDI |
2 |
0 |
0 |
0 |
36 |
1309 |
7991 |
6481 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59933 |
13533 |
370 |
406 |
55 |
0 |
0 |
0 |
| OW |
12 |
616 |
231 |
622 |
347 |
24 |
0 |
0 |
| VODI |
10 |
192 |
132 |
549 |
595 |
203 |
2 |
0 |
| ODI |
5 |
54 |
25 |
499 |
759 |
663 |
34 |
0 |
| CDI |
4 |
29 |
16 |
207 |
780 |
2154 |
1084 |
1 |
| VCDI |
2 |
1 |
0 |
12 |
177 |
1564 |
8034 |
6480 |
|
Date: 2025-04-18:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
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