Validation of sea ice concentration - European sector
Bulletin date: 2025-06-26
Data source: OSI SAF N.H. AMSR 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 |
70279 |
10396 |
51 |
17 |
2 |
0 |
0 |
0 |
| OW |
1082 |
1825 |
409 |
378 |
22 |
0 |
0 |
0 |
| VODI |
3275 |
432 |
322 |
1322 |
483 |
42 |
0 |
0 |
| ODI |
0 |
33 |
39 |
334 |
757 |
272 |
21 |
0 |
| CDI |
0 |
11 |
17 |
127 |
480 |
1115 |
762 |
0 |
| VCDI |
0 |
3 |
6 |
20 |
63 |
389 |
5175 |
2901 |
|
...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 |
70105 |
10330 |
50 |
24 |
3 |
0 |
0 |
0 |
| OW |
1081 |
2254 |
343 |
299 |
31 |
0 |
0 |
0 |
| VODI |
3257 |
574 |
449 |
1078 |
376 |
31 |
0 |
0 |
| ODI |
0 |
50 |
49 |
359 |
738 |
252 |
26 |
0 |
| CDI |
0 |
18 |
25 |
156 |
610 |
1331 |
643 |
0 |
| VCDI |
0 |
4 |
10 |
26 |
70 |
945 |
5771 |
1494 |
|
...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 |
71358 |
10060 |
76 |
33 |
5 |
1 |
0 |
0 |
| OW |
1100 |
2108 |
424 |
361 |
21 |
0 |
0 |
0 |
| VODI |
3225 |
167 |
243 |
1122 |
407 |
30 |
1 |
0 |
| ODI |
0 |
12 |
16 |
290 |
953 |
306 |
21 |
0 |
| CDI |
0 |
27 |
20 |
110 |
425 |
1297 |
610 |
0 |
| VCDI |
0 |
0 |
2 |
7 |
30 |
523 |
6023 |
1448 |
|
...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 |
72090 |
9668 |
57 |
35 |
5 |
0 |
0 |
0 |
| OW |
1195 |
2122 |
300 |
294 |
33 |
1 |
0 |
0 |
| VODI |
3203 |
274 |
279 |
946 |
319 |
52 |
6 |
0 |
| ODI |
0 |
32 |
34 |
296 |
798 |
227 |
45 |
0 |
| CDI |
0 |
38 |
56 |
173 |
614 |
1619 |
477 |
0 |
| VCDI |
0 |
0 |
1 |
6 |
40 |
2151 |
4441 |
935 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
72100 |
9760 |
74 |
50 |
6 |
0 |
0 |
0 |
| OW |
1184 |
2004 |
282 |
264 |
23 |
1 |
1 |
0 |
| VODI |
3204 |
303 |
281 |
956 |
366 |
64 |
4 |
0 |
| ODI |
0 |
33 |
33 |
299 |
782 |
232 |
52 |
0 |
| CDI |
0 |
33 |
55 |
173 |
589 |
1682 |
610 |
0 |
| VCDI |
0 |
1 |
2 |
8 |
43 |
2071 |
4302 |
935 |
|
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 |
72820 |
9586 |
73 |
20 |
5 |
0 |
0 |
0 |
| OW |
1212 |
2013 |
243 |
213 |
28 |
5 |
0 |
0 |
| VODI |
3185 |
347 |
272 |
709 |
210 |
46 |
2 |
0 |
| ODI |
0 |
46 |
47 |
350 |
835 |
153 |
15 |
0 |
| CDI |
0 |
30 |
51 |
252 |
951 |
1064 |
508 |
0 |
| VCDI |
0 |
0 |
0 |
8 |
71 |
2079 |
4948 |
465 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
72801 |
9626 |
86 |
29 |
5 |
0 |
0 |
0 |
| OW |
1230 |
1958 |
238 |
178 |
22 |
5 |
0 |
0 |
| VODI |
3186 |
370 |
259 |
767 |
232 |
47 |
2 |
0 |
| ODI |
0 |
39 |
44 |
312 |
843 |
166 |
28 |
0 |
| CDI |
0 |
29 |
59 |
253 |
840 |
1127 |
667 |
0 |
| VCDI |
0 |
0 |
0 |
13 |
158 |
2002 |
4776 |
465 |
|
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 |
72027 |
11797 |
82 |
58 |
1 |
0 |
0 |
0 |
| OW |
1204 |
1641 |
373 |
280 |
22 |
0 |
0 |
0 |
| VODI |
3126 |
48 |
115 |
809 |
301 |
5 |
0 |
0 |
| ODI |
0 |
2 |
13 |
218 |
1066 |
146 |
3 |
0 |
| CDI |
0 |
0 |
0 |
51 |
522 |
1994 |
126 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
618 |
6137 |
77 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
71953 |
11014 |
64 |
54 |
2 |
0 |
0 |
0 |
| OW |
1234 |
1813 |
172 |
178 |
14 |
0 |
0 |
0 |
| VODI |
3170 |
516 |
226 |
568 |
259 |
37 |
1 |
0 |
| ODI |
0 |
91 |
52 |
324 |
778 |
187 |
13 |
0 |
| CDI |
0 |
54 |
69 |
276 |
783 |
1337 |
558 |
0 |
| VCDI |
0 |
0 |
0 |
16 |
76 |
1202 |
5694 |
77 |
|
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 |
74421 |
9823 |
56 |
23 |
0 |
0 |
0 |
0 |
| OW |
1204 |
1495 |
297 |
220 |
27 |
0 |
0 |
0 |
| VODI |
3108 |
156 |
184 |
664 |
335 |
9 |
0 |
0 |
| ODI |
0 |
13 |
35 |
301 |
940 |
195 |
8 |
0 |
| CDI |
0 |
6 |
33 |
100 |
1067 |
1308 |
140 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
184 |
1929 |
4407 |
174 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
74394 |
8871 |
49 |
20 |
5 |
0 |
0 |
0 |
| OW |
1194 |
1764 |
157 |
155 |
35 |
0 |
0 |
0 |
| VODI |
3145 |
625 |
213 |
467 |
271 |
22 |
3 |
0 |
| ODI |
0 |
159 |
91 |
314 |
653 |
361 |
10 |
0 |
| CDI |
0 |
73 |
89 |
321 |
1190 |
1125 |
443 |
0 |
| VCDI |
0 |
1 |
6 |
31 |
399 |
1933 |
4099 |
174 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
75545 |
7922 |
70 |
37 |
1 |
0 |
0 |
0 |
| OW |
1374 |
1475 |
144 |
222 |
50 |
0 |
0 |
0 |
| VODI |
3129 |
598 |
174 |
550 |
305 |
16 |
1 |
0 |
| ODI |
0 |
221 |
90 |
336 |
797 |
303 |
16 |
0 |
| CDI |
0 |
102 |
93 |
347 |
1575 |
1108 |
353 |
0 |
| VCDI |
0 |
0 |
1 |
20 |
585 |
2658 |
2644 |
0 |
|
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