Validation of sea ice concentration - European sector
Bulletin date: 2025-04-03
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-03-28:
| 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 |
61042 |
12920 |
315 |
346 |
34 |
0 |
0 |
0 |
| OW |
0 |
787 |
313 |
695 |
188 |
9 |
0 |
0 |
| VODI |
0 |
112 |
78 |
813 |
422 |
48 |
0 |
0 |
| ODI |
0 |
35 |
8 |
353 |
824 |
261 |
0 |
0 |
| CDI |
0 |
19 |
8 |
124 |
870 |
2608 |
278 |
1 |
| VCDI |
0 |
13 |
4 |
42 |
317 |
3440 |
8587 |
4502 |
|
...date precedes bulletin
|
Date: 2025-03-30:
| 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 |
60929 |
12843 |
260 |
412 |
49 |
0 |
0 |
0 |
| OW |
7 |
784 |
335 |
620 |
237 |
6 |
0 |
0 |
| VODI |
4 |
88 |
69 |
780 |
505 |
50 |
0 |
0 |
| ODI |
1 |
29 |
10 |
207 |
895 |
322 |
0 |
0 |
| CDI |
1 |
27 |
6 |
66 |
820 |
2374 |
561 |
1 |
| VCDI |
4 |
14 |
0 |
19 |
249 |
3321 |
8905 |
4606 |
|
...date precedes bulletin
|
Date: 2025-04-01:
| 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 |
60121 |
13801 |
365 |
385 |
72 |
2 |
0 |
0 |
| OW |
28 |
548 |
261 |
748 |
184 |
6 |
0 |
0 |
| VODI |
5 |
90 |
69 |
633 |
589 |
44 |
1 |
0 |
| ODI |
0 |
19 |
3 |
191 |
731 |
286 |
11 |
0 |
| CDI |
0 |
7 |
1 |
72 |
543 |
2381 |
871 |
0 |
| VCDI |
0 |
2 |
0 |
17 |
211 |
2653 |
8144 |
6321 |
|
...date precedes bulletin
|
Date: 2025-04-03:
| 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 |
59836 |
13927 |
370 |
424 |
64 |
0 |
0 |
0 |
| OW |
1 |
575 |
244 |
755 |
187 |
8 |
2 |
0 |
| VODI |
2 |
166 |
88 |
628 |
562 |
47 |
4 |
0 |
| ODI |
2 |
22 |
25 |
196 |
717 |
228 |
8 |
0 |
| CDI |
1 |
5 |
6 |
138 |
749 |
2196 |
384 |
4 |
| VCDI |
4 |
1 |
0 |
37 |
270 |
3727 |
7832 |
5974 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59836 |
13973 |
396 |
450 |
70 |
0 |
0 |
0 |
| OW |
1 |
531 |
220 |
781 |
183 |
9 |
3 |
0 |
| VODI |
2 |
163 |
81 |
572 |
580 |
49 |
4 |
0 |
| ODI |
2 |
24 |
28 |
191 |
699 |
217 |
6 |
0 |
| CDI |
1 |
4 |
8 |
145 |
743 |
2279 |
447 |
4 |
| VCDI |
4 |
1 |
0 |
39 |
274 |
3652 |
7770 |
5974 |
|
Date: 2025-04-05:
| 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 |
59441 |
13754 |
337 |
452 |
69 |
1 |
0 |
0 |
| OW |
0 |
550 |
178 |
833 |
187 |
12 |
0 |
0 |
| VODI |
0 |
197 |
65 |
578 |
617 |
57 |
1 |
0 |
| ODI |
0 |
38 |
31 |
200 |
676 |
280 |
5 |
0 |
| CDI |
0 |
17 |
16 |
179 |
956 |
2778 |
648 |
0 |
| VCDI |
0 |
11 |
9 |
27 |
145 |
2792 |
8342 |
5937 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59441 |
13813 |
339 |
498 |
72 |
0 |
0 |
0 |
| OW |
0 |
470 |
178 |
820 |
207 |
11 |
0 |
0 |
| VODI |
0 |
211 |
63 |
546 |
625 |
56 |
0 |
0 |
| ODI |
0 |
41 |
31 |
190 |
680 |
282 |
5 |
0 |
| CDI |
0 |
20 |
15 |
184 |
909 |
2928 |
793 |
0 |
| VCDI |
0 |
12 |
10 |
31 |
157 |
2643 |
8198 |
5937 |
|
Date: 2025-04-07:
| 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 |
59153 |
14068 |
342 |
537 |
72 |
0 |
0 |
0 |
| OW |
15 |
617 |
298 |
723 |
265 |
6 |
0 |
0 |
| VODI |
0 |
39 |
38 |
712 |
761 |
80 |
0 |
0 |
| ODI |
0 |
12 |
8 |
187 |
901 |
383 |
6 |
0 |
| CDI |
0 |
0 |
0 |
30 |
847 |
3096 |
336 |
0 |
| VCDI |
0 |
5 |
0 |
0 |
70 |
1547 |
9109 |
6153 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59150 |
13787 |
311 |
525 |
95 |
0 |
0 |
0 |
| OW |
17 |
610 |
226 |
610 |
261 |
7 |
0 |
0 |
| VODI |
1 |
272 |
95 |
549 |
595 |
94 |
0 |
0 |
| ODI |
0 |
43 |
39 |
293 |
648 |
419 |
18 |
0 |
| CDI |
0 |
24 |
11 |
191 |
1099 |
2901 |
628 |
8 |
| VCDI |
0 |
5 |
4 |
21 |
218 |
1691 |
8805 |
6145 |
|
Date: 2025-04-09:
| 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 |
59698 |
13914 |
345 |
430 |
15 |
0 |
0 |
0 |
| OW |
23 |
631 |
260 |
763 |
181 |
4 |
0 |
0 |
| VODI |
9 |
105 |
99 |
704 |
656 |
56 |
0 |
0 |
| ODI |
6 |
7 |
7 |
252 |
1032 |
277 |
2 |
0 |
| CDI |
5 |
0 |
0 |
94 |
1101 |
2509 |
224 |
0 |
| VCDI |
3 |
0 |
0 |
12 |
293 |
2990 |
8438 |
5271 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59697 |
13396 |
309 |
403 |
19 |
0 |
0 |
0 |
| OW |
18 |
798 |
203 |
618 |
179 |
6 |
0 |
0 |
| VODI |
12 |
387 |
106 |
583 |
581 |
85 |
0 |
0 |
| ODI |
6 |
60 |
62 |
356 |
793 |
262 |
0 |
0 |
| CDI |
7 |
15 |
23 |
199 |
1234 |
2396 |
337 |
2 |
| VCDI |
4 |
1 |
8 |
96 |
472 |
3087 |
8327 |
5269 |
|
Date: 2025-04-11:
| 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 |
59560 |
13871 |
374 |
430 |
38 |
0 |
0 |
0 |
| OW |
19 |
572 |
261 |
761 |
298 |
11 |
0 |
0 |
| VODI |
11 |
136 |
78 |
622 |
690 |
77 |
0 |
0 |
| ODI |
10 |
14 |
25 |
294 |
877 |
390 |
3 |
0 |
| CDI |
5 |
0 |
2 |
122 |
1146 |
2074 |
423 |
0 |
| VCDI |
3 |
0 |
0 |
10 |
311 |
3336 |
8958 |
4604 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59551 |
12956 |
323 |
532 |
139 |
0 |
0 |
0 |
| OW |
32 |
913 |
177 |
583 |
311 |
13 |
0 |
0 |
| VODI |
10 |
533 |
119 |
469 |
666 |
174 |
3 |
0 |
| ODI |
6 |
188 |
93 |
308 |
679 |
358 |
22 |
0 |
| CDI |
4 |
3 |
28 |
296 |
977 |
2043 |
448 |
0 |
| VCDI |
5 |
0 |
0 |
51 |
588 |
3300 |
8911 |
4604 |
|
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