Validation of sea ice concentration - European sector
Bulletin date: 2025-07-10
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-07-04:
| 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 |
75784 |
8646 |
32 |
13 |
1 |
0 |
0 |
0 |
| OW |
1318 |
1266 |
245 |
221 |
24 |
0 |
0 |
0 |
| VODI |
2946 |
301 |
206 |
699 |
324 |
18 |
1 |
0 |
| ODI |
0 |
78 |
47 |
435 |
1163 |
275 |
14 |
0 |
| CDI |
0 |
27 |
42 |
144 |
1015 |
1031 |
176 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
786 |
2761 |
2823 |
0 |
|
...date precedes bulletin
|
Date: 2025-07-06:
| 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 |
74803 |
9467 |
74 |
52 |
17 |
0 |
0 |
0 |
| OW |
1277 |
1337 |
219 |
271 |
28 |
0 |
0 |
0 |
| VODI |
2924 |
405 |
255 |
697 |
373 |
18 |
1 |
0 |
| ODI |
0 |
113 |
83 |
596 |
960 |
278 |
15 |
0 |
| CDI |
0 |
48 |
39 |
171 |
1254 |
941 |
230 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
313 |
3438 |
2165 |
0 |
|
...date precedes bulletin
|
Date: 2025-07-08:
| 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 |
75695 |
9335 |
76 |
26 |
1 |
0 |
0 |
0 |
| OW |
1374 |
1510 |
396 |
333 |
32 |
0 |
0 |
0 |
| VODI |
2844 |
131 |
241 |
1220 |
380 |
2 |
1 |
0 |
| ODI |
0 |
8 |
25 |
253 |
1084 |
222 |
5 |
0 |
| CDI |
0 |
0 |
0 |
27 |
1383 |
1979 |
224 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
16 |
2219 |
1820 |
0 |
|
...date precedes bulletin
|
Date: 2025-07-10:
| 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 |
76632 |
8229 |
71 |
37 |
2 |
0 |
0 |
0 |
| OW |
1377 |
1614 |
335 |
319 |
43 |
0 |
0 |
0 |
| VODI |
2821 |
271 |
304 |
1192 |
290 |
18 |
2 |
0 |
| ODI |
0 |
14 |
31 |
337 |
1046 |
241 |
15 |
0 |
| CDI |
0 |
1 |
0 |
39 |
571 |
2903 |
678 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
2226 |
1199 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
76620 |
8351 |
85 |
45 |
1 |
0 |
0 |
0 |
| OW |
1389 |
1507 |
335 |
328 |
44 |
1 |
0 |
0 |
| VODI |
2821 |
253 |
295 |
1150 |
300 |
19 |
2 |
0 |
| ODI |
0 |
18 |
26 |
366 |
1011 |
274 |
14 |
0 |
| CDI |
0 |
0 |
0 |
35 |
595 |
2965 |
693 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
5 |
2129 |
1185 |
0 |
|
Date: 2025-07-12:
| 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 |
77363 |
7272 |
53 |
34 |
1 |
0 |
0 |
0 |
| OW |
1382 |
1763 |
360 |
307 |
28 |
2 |
1 |
0 |
| VODI |
2797 |
477 |
354 |
1134 |
272 |
34 |
2 |
0 |
| ODI |
0 |
40 |
58 |
552 |
1037 |
235 |
35 |
0 |
| CDI |
0 |
1 |
7 |
84 |
1344 |
3256 |
473 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
21 |
1812 |
271 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
77360 |
7319 |
77 |
34 |
1 |
0 |
0 |
0 |
| OW |
1383 |
1728 |
336 |
349 |
34 |
2 |
1 |
0 |
| VODI |
2799 |
469 |
359 |
1066 |
283 |
36 |
2 |
0 |
| ODI |
0 |
36 |
48 |
565 |
1028 |
252 |
38 |
0 |
| CDI |
0 |
1 |
12 |
97 |
1200 |
3203 |
421 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
157 |
1846 |
320 |
0 |
|
Date: 2025-07-14:
| 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 |
77533 |
7588 |
73 |
28 |
2 |
0 |
0 |
0 |
| OW |
1534 |
2026 |
559 |
441 |
33 |
0 |
0 |
0 |
| VODI |
2549 |
36 |
139 |
1449 |
443 |
8 |
2 |
0 |
| ODI |
0 |
0 |
3 |
222 |
1387 |
160 |
4 |
0 |
| CDI |
0 |
0 |
0 |
5 |
726 |
5404 |
196 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
6 |
79 |
227 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
77426 |
6994 |
46 |
27 |
2 |
0 |
0 |
0 |
| OW |
1415 |
1875 |
321 |
379 |
55 |
6 |
1 |
0 |
| VODI |
2775 |
721 |
323 |
991 |
351 |
63 |
13 |
0 |
| ODI |
0 |
51 |
72 |
649 |
973 |
214 |
101 |
0 |
| CDI |
0 |
9 |
12 |
99 |
1140 |
4771 |
274 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
76 |
597 |
40 |
0 |
|
Date: 2025-07-16:
| 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 |
77087 |
8010 |
58 |
34 |
2 |
0 |
0 |
0 |
| OW |
1601 |
2075 |
406 |
441 |
21 |
0 |
0 |
0 |
| VODI |
2525 |
207 |
373 |
1328 |
287 |
12 |
0 |
0 |
| ODI |
0 |
2 |
12 |
393 |
1237 |
138 |
1 |
0 |
| CDI |
0 |
0 |
1 |
24 |
771 |
5643 |
30 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
121 |
22 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
76912 |
7366 |
26 |
12 |
0 |
0 |
0 |
0 |
| OW |
1551 |
2050 |
258 |
356 |
29 |
7 |
0 |
0 |
| VODI |
2750 |
808 |
438 |
878 |
299 |
57 |
0 |
0 |
| ODI |
0 |
61 |
118 |
865 |
964 |
181 |
19 |
0 |
| CDI |
0 |
9 |
10 |
109 |
1008 |
5019 |
32 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
18 |
650 |
2 |
0 |
|
Date: 2025-07-18:
| 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 |
78480 |
6845 |
49 |
28 |
1 |
0 |
0 |
0 |
| OW |
1672 |
1992 |
389 |
356 |
36 |
0 |
0 |
0 |
| VODI |
2494 |
262 |
381 |
1187 |
322 |
28 |
0 |
0 |
| ODI |
0 |
3 |
18 |
386 |
1038 |
232 |
18 |
0 |
| CDI |
0 |
0 |
0 |
4 |
712 |
5187 |
620 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
93 |
29 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
78239 |
5769 |
26 |
21 |
0 |
0 |
0 |
0 |
| OW |
1684 |
2273 |
255 |
279 |
39 |
9 |
0 |
0 |
| VODI |
2723 |
993 |
435 |
797 |
327 |
87 |
18 |
0 |
| ODI |
0 |
60 |
113 |
805 |
842 |
225 |
51 |
0 |
| CDI |
0 |
7 |
8 |
59 |
901 |
4535 |
487 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
684 |
111 |
0 |
|
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