Validation of sea ice concentration - European sector
Bulletin date: 2025-06-19
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-06-13:
| 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 |
69380 |
11663 |
98 |
85 |
6 |
0 |
0 |
0 |
| OW |
81 |
1968 |
388 |
313 |
34 |
0 |
0 |
0 |
| VODI |
0 |
180 |
263 |
1827 |
529 |
2 |
0 |
0 |
| ODI |
0 |
2 |
13 |
417 |
1285 |
226 |
0 |
0 |
| CDI |
0 |
0 |
0 |
61 |
738 |
1846 |
1310 |
29 |
| VCDI |
0 |
0 |
0 |
0 |
24 |
395 |
3629 |
3624 |
|
...date precedes bulletin
|
Date: 2025-06-15:
| 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 |
70844 |
10117 |
72 |
52 |
7 |
0 |
0 |
0 |
| OW |
0 |
2124 |
351 |
385 |
61 |
0 |
0 |
0 |
| VODI |
0 |
307 |
277 |
1829 |
497 |
9 |
0 |
0 |
| ODI |
0 |
4 |
27 |
539 |
1118 |
228 |
4 |
0 |
| CDI |
0 |
0 |
0 |
77 |
852 |
1935 |
1592 |
42 |
| VCDI |
0 |
0 |
0 |
0 |
7 |
106 |
3009 |
3944 |
|
...date precedes bulletin
|
Date: 2025-06-17:
| 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 |
71454 |
10581 |
69 |
58 |
1 |
0 |
0 |
0 |
| OW |
84 |
1574 |
510 |
493 |
20 |
1 |
0 |
0 |
| VODI |
0 |
38 |
113 |
2153 |
404 |
6 |
1 |
0 |
| ODI |
0 |
0 |
0 |
193 |
1353 |
111 |
0 |
0 |
| CDI |
0 |
0 |
0 |
5 |
621 |
1457 |
294 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
460 |
4486 |
3874 |
|
...date precedes bulletin
|
Date: 2025-06-19:
| 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 |
72488 |
9748 |
60 |
32 |
0 |
0 |
0 |
0 |
| OW |
93 |
1748 |
454 |
387 |
10 |
0 |
0 |
0 |
| VODI |
0 |
229 |
245 |
1799 |
389 |
5 |
0 |
0 |
| ODI |
0 |
0 |
2 |
335 |
1014 |
132 |
0 |
1 |
| CDI |
0 |
0 |
0 |
35 |
840 |
1363 |
292 |
48 |
| VCDI |
0 |
0 |
0 |
0 |
37 |
436 |
4394 |
3800 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
72401 |
9948 |
85 |
42 |
0 |
0 |
0 |
0 |
| OW |
180 |
1529 |
428 |
440 |
14 |
1 |
0 |
0 |
| VODI |
0 |
248 |
244 |
1733 |
435 |
4 |
0 |
0 |
| ODI |
0 |
0 |
4 |
324 |
904 |
130 |
0 |
1 |
| CDI |
0 |
0 |
0 |
49 |
890 |
1326 |
354 |
42 |
| VCDI |
0 |
0 |
0 |
0 |
47 |
475 |
4332 |
3806 |
|
Date: 2025-06-21:
| 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 |
73312 |
8907 |
42 |
31 |
1 |
0 |
0 |
0 |
| OW |
213 |
1933 |
350 |
322 |
9 |
0 |
0 |
0 |
| VODI |
1 |
477 |
292 |
1592 |
252 |
0 |
0 |
0 |
| ODI |
0 |
2 |
18 |
437 |
941 |
54 |
1 |
0 |
| CDI |
0 |
0 |
0 |
88 |
923 |
1359 |
362 |
0 |
| VCDI |
0 |
0 |
0 |
6 |
69 |
1018 |
3823 |
3581 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
73248 |
9115 |
67 |
40 |
0 |
0 |
0 |
0 |
| OW |
270 |
1737 |
334 |
369 |
9 |
0 |
0 |
0 |
| VODI |
8 |
464 |
273 |
1522 |
320 |
1 |
0 |
0 |
| ODI |
0 |
3 |
28 |
413 |
777 |
68 |
5 |
0 |
| CDI |
0 |
0 |
0 |
126 |
1004 |
1294 |
373 |
0 |
| VCDI |
0 |
0 |
0 |
6 |
85 |
1068 |
3808 |
3581 |
|
Date: 2025-06-23:
| 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 |
73577 |
8820 |
114 |
65 |
0 |
0 |
0 |
0 |
| OW |
212 |
1923 |
319 |
386 |
15 |
0 |
0 |
0 |
| VODI |
0 |
465 |
257 |
1268 |
333 |
1 |
0 |
0 |
| ODI |
0 |
16 |
38 |
397 |
812 |
39 |
25 |
1 |
| CDI |
0 |
0 |
13 |
230 |
1062 |
1285 |
449 |
277 |
| VCDI |
0 |
0 |
0 |
17 |
105 |
882 |
3095 |
3918 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
73568 |
8720 |
109 |
61 |
3 |
0 |
0 |
0 |
| OW |
218 |
2021 |
293 |
370 |
10 |
0 |
0 |
0 |
| VODI |
3 |
472 |
284 |
1285 |
346 |
4 |
3 |
0 |
| ODI |
0 |
11 |
52 |
421 |
814 |
61 |
45 |
1 |
| CDI |
0 |
0 |
3 |
209 |
1051 |
1269 |
390 |
193 |
| VCDI |
0 |
0 |
0 |
17 |
103 |
873 |
3131 |
4002 |
|
Date: 2025-06-25:
| 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 |
73949 |
9438 |
73 |
36 |
0 |
0 |
0 |
0 |
| OW |
61 |
1856 |
450 |
334 |
7 |
0 |
0 |
0 |
| VODI |
0 |
57 |
192 |
1497 |
316 |
5 |
0 |
0 |
| ODI |
0 |
0 |
0 |
233 |
1208 |
105 |
7 |
0 |
| CDI |
0 |
0 |
0 |
97 |
679 |
1412 |
596 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
21 |
937 |
5693 |
1157 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
73872 |
8500 |
96 |
70 |
1 |
0 |
0 |
0 |
| OW |
138 |
2270 |
324 |
344 |
17 |
0 |
0 |
0 |
| VODI |
0 |
545 |
230 |
1080 |
374 |
3 |
16 |
0 |
| ODI |
0 |
36 |
48 |
443 |
738 |
69 |
80 |
0 |
| CDI |
0 |
0 |
17 |
236 |
958 |
1453 |
1549 |
58 |
| VCDI |
0 |
0 |
0 |
24 |
143 |
934 |
4651 |
1099 |
|
Date: 2025-06-27:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
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