Validation of sea ice concentration - European sector
Bulletin date: 2025-03-27
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-03-21:
| 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 |
59080 |
13874 |
270 |
373 |
65 |
0 |
0 |
0 |
| OW |
0 |
802 |
250 |
723 |
228 |
8 |
0 |
0 |
| VODI |
0 |
242 |
115 |
705 |
691 |
47 |
0 |
0 |
| ODI |
0 |
26 |
36 |
365 |
911 |
301 |
8 |
0 |
| CDI |
0 |
7 |
10 |
196 |
1494 |
2486 |
1368 |
0 |
| VCDI |
0 |
0 |
0 |
101 |
619 |
3940 |
7593 |
3482 |
|
...date precedes bulletin
|
Date: 2025-03-23:
| 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 |
59314 |
14185 |
229 |
263 |
32 |
0 |
0 |
0 |
| OW |
0 |
830 |
319 |
758 |
156 |
2 |
0 |
0 |
| VODI |
0 |
259 |
98 |
773 |
470 |
67 |
0 |
0 |
| ODI |
0 |
56 |
27 |
390 |
669 |
323 |
18 |
0 |
| CDI |
0 |
27 |
19 |
225 |
1481 |
1449 |
1230 |
150 |
| VCDI |
0 |
14 |
6 |
141 |
357 |
4514 |
6972 |
4593 |
|
...date precedes bulletin
|
Date: 2025-03-25:
| 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 |
60226 |
13726 |
107 |
721 |
1 |
0 |
0 |
0 |
| OW |
0 |
779 |
264 |
956 |
30 |
0 |
0 |
0 |
| VODI |
0 |
122 |
113 |
1092 |
189 |
5 |
0 |
0 |
| ODI |
0 |
15 |
13 |
925 |
515 |
73 |
0 |
0 |
| CDI |
0 |
17 |
2 |
1835 |
391 |
1338 |
105 |
0 |
| VCDI |
0 |
1 |
0 |
6465 |
1001 |
2323 |
5286 |
1780 |
|
...date precedes bulletin
|
Date: 2025-03-27:
| 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 |
61438 |
12623 |
334 |
295 |
31 |
0 |
0 |
0 |
| OW |
1 |
821 |
327 |
650 |
146 |
4 |
0 |
0 |
| VODI |
0 |
129 |
102 |
795 |
389 |
53 |
0 |
0 |
| ODI |
0 |
28 |
11 |
374 |
879 |
253 |
5 |
0 |
| CDI |
0 |
22 |
5 |
128 |
992 |
2440 |
318 |
0 |
| VCDI |
0 |
3 |
2 |
46 |
360 |
3796 |
8360 |
4256 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
61438 |
12729 |
351 |
297 |
34 |
0 |
0 |
0 |
| OW |
1 |
706 |
329 |
683 |
148 |
7 |
0 |
0 |
| VODI |
0 |
138 |
83 |
807 |
430 |
51 |
0 |
0 |
| ODI |
0 |
31 |
10 |
332 |
879 |
263 |
8 |
0 |
| CDI |
0 |
19 |
7 |
123 |
914 |
2392 |
368 |
0 |
| VCDI |
0 |
3 |
1 |
46 |
392 |
3833 |
8307 |
4256 |
|
Date: 2025-03-29:
| 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 |
61057 |
12845 |
331 |
305 |
40 |
0 |
0 |
0 |
| OW |
11 |
850 |
303 |
651 |
184 |
10 |
0 |
0 |
| VODI |
2 |
110 |
98 |
824 |
389 |
59 |
0 |
0 |
| ODI |
3 |
33 |
1 |
280 |
893 |
259 |
0 |
0 |
| CDI |
1 |
28 |
0 |
112 |
851 |
2436 |
617 |
1 |
| VCDI |
4 |
20 |
0 |
19 |
273 |
2955 |
8801 |
4760 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
61057 |
12977 |
343 |
326 |
45 |
0 |
0 |
0 |
| OW |
11 |
720 |
306 |
647 |
186 |
12 |
0 |
0 |
| VODI |
2 |
113 |
84 |
821 |
417 |
54 |
0 |
0 |
| ODI |
3 |
31 |
0 |
276 |
906 |
303 |
0 |
0 |
| CDI |
1 |
26 |
0 |
97 |
767 |
2315 |
722 |
0 |
| VCDI |
4 |
19 |
0 |
24 |
309 |
3035 |
8696 |
4761 |
|
Date: 2025-03-31:
| 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 |
60436 |
13510 |
333 |
444 |
51 |
6 |
0 |
0 |
| OW |
34 |
506 |
235 |
784 |
227 |
5 |
0 |
0 |
| VODI |
1 |
65 |
30 |
692 |
687 |
43 |
0 |
0 |
| ODI |
0 |
16 |
2 |
113 |
903 |
361 |
0 |
0 |
| CDI |
0 |
8 |
1 |
24 |
527 |
2928 |
496 |
0 |
| VCDI |
0 |
3 |
0 |
3 |
164 |
2433 |
9273 |
5072 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
60443 |
13316 |
314 |
396 |
56 |
0 |
0 |
0 |
| OW |
26 |
644 |
230 |
769 |
210 |
12 |
0 |
0 |
| VODI |
2 |
92 |
44 |
634 |
599 |
71 |
0 |
0 |
| ODI |
0 |
27 |
11 |
182 |
734 |
528 |
9 |
0 |
| CDI |
0 |
26 |
2 |
73 |
654 |
2200 |
909 |
1 |
| VCDI |
0 |
3 |
0 |
6 |
306 |
2965 |
8851 |
5071 |
|
Date: 2025-04-02:
| 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 |
60256 |
13641 |
353 |
373 |
87 |
1 |
0 |
0 |
| OW |
8 |
588 |
269 |
716 |
228 |
16 |
0 |
0 |
| VODI |
3 |
155 |
71 |
640 |
527 |
56 |
1 |
0 |
| ODI |
1 |
21 |
20 |
192 |
748 |
212 |
8 |
0 |
| CDI |
1 |
6 |
1 |
97 |
657 |
1867 |
779 |
3 |
| VCDI |
4 |
0 |
0 |
25 |
197 |
2795 |
8455 |
6338 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
60262 |
13099 |
366 |
473 |
119 |
0 |
0 |
0 |
| OW |
1 |
847 |
204 |
577 |
258 |
18 |
0 |
0 |
| VODI |
4 |
328 |
84 |
554 |
511 |
104 |
1 |
0 |
| ODI |
1 |
103 |
32 |
229 |
703 |
400 |
37 |
0 |
| CDI |
1 |
34 |
24 |
160 |
669 |
1777 |
1190 |
4 |
| VCDI |
4 |
0 |
4 |
50 |
184 |
2648 |
8015 |
6337 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59839 |
12670 |
443 |
831 |
174 |
0 |
0 |
0 |
| OW |
0 |
991 |
111 |
463 |
356 |
43 |
0 |
0 |
| VODI |
0 |
445 |
89 |
356 |
558 |
168 |
12 |
0 |
| ODI |
0 |
148 |
29 |
232 |
549 |
534 |
22 |
0 |
| CDI |
0 |
71 |
44 |
271 |
754 |
2294 |
988 |
0 |
| VCDI |
0 |
31 |
12 |
53 |
252 |
3424 |
7413 |
5746 |
|
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