Validation of sea ice concentration - European sector
Bulletin date: 2025-07-10
Data source: OSI SAF N.H. multi-product 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 |
80919 |
4937 |
191 |
12 |
0 |
0 |
0 |
0 |
| OW |
506 |
710 |
361 |
266 |
3 |
0 |
0 |
0 |
| VODI |
21 |
92 |
673 |
649 |
140 |
0 |
1 |
1 |
| ODI |
0 |
14 |
672 |
400 |
906 |
42 |
5 |
12 |
| CDI |
0 |
0 |
763 |
171 |
1113 |
346 |
75 |
17 |
| VCDI |
0 |
0 |
0 |
99 |
1098 |
2781 |
2116 |
304 |
|
...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 |
77678 |
8251 |
50 |
23 |
0 |
0 |
0 |
0 |
| OW |
74 |
1195 |
194 |
386 |
29 |
0 |
0 |
0 |
| VODI |
1 |
214 |
187 |
1039 |
331 |
2 |
0 |
0 |
| ODI |
0 |
24 |
60 |
635 |
1198 |
151 |
13 |
0 |
| CDI |
0 |
2 |
11 |
132 |
1557 |
865 |
179 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
226 |
3301 |
2408 |
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 |
78339 |
8303 |
44 |
26 |
5 |
0 |
0 |
0 |
| OW |
34 |
1395 |
372 |
519 |
11 |
0 |
0 |
0 |
| VODI |
0 |
60 |
129 |
1486 |
327 |
3 |
0 |
0 |
| ODI |
0 |
0 |
0 |
201 |
1357 |
64 |
4 |
0 |
| CDI |
0 |
0 |
0 |
7 |
1607 |
1858 |
192 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
9 |
2108 |
1956 |
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 |
79288 |
7195 |
30 |
44 |
2 |
0 |
0 |
0 |
| OW |
93 |
1499 |
270 |
476 |
8 |
0 |
0 |
0 |
| VODI |
0 |
184 |
183 |
1513 |
228 |
5 |
0 |
0 |
| ODI |
0 |
0 |
1 |
275 |
1362 |
66 |
14 |
0 |
| CDI |
0 |
0 |
0 |
3 |
845 |
2677 |
716 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
6 |
1848 |
1585 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
79284 |
7310 |
47 |
47 |
2 |
0 |
0 |
0 |
| OW |
97 |
1397 |
263 |
500 |
9 |
0 |
0 |
0 |
| VODI |
0 |
171 |
173 |
1450 |
252 |
5 |
0 |
0 |
| ODI |
0 |
0 |
1 |
309 |
1324 |
92 |
12 |
0 |
| CDI |
0 |
0 |
0 |
5 |
862 |
2743 |
731 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
1756 |
1572 |
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 |
79957 |
6298 |
25 |
39 |
0 |
0 |
0 |
0 |
| OW |
121 |
1689 |
246 |
406 |
11 |
1 |
0 |
0 |
| VODI |
0 |
376 |
289 |
1418 |
217 |
17 |
0 |
0 |
| ODI |
0 |
0 |
7 |
551 |
1352 |
62 |
27 |
0 |
| CDI |
0 |
0 |
0 |
52 |
1442 |
3285 |
416 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
41 |
1862 |
209 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
79961 |
6359 |
26 |
41 |
0 |
0 |
0 |
0 |
| OW |
117 |
1640 |
261 |
433 |
17 |
1 |
0 |
0 |
| VODI |
0 |
362 |
274 |
1368 |
235 |
16 |
0 |
0 |
| ODI |
0 |
2 |
6 |
539 |
1358 |
77 |
25 |
0 |
| CDI |
0 |
0 |
0 |
85 |
1306 |
3240 |
336 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
147 |
1893 |
291 |
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 |
79893 |
6721 |
59 |
51 |
0 |
0 |
0 |
0 |
| OW |
89 |
1748 |
519 |
736 |
4 |
0 |
0 |
0 |
| VODI |
0 |
22 |
88 |
1712 |
294 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
206 |
1573 |
18 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
907 |
5165 |
290 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
22 |
143 |
156 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
79830 |
6167 |
45 |
43 |
0 |
0 |
0 |
0 |
| OW |
149 |
1744 |
323 |
433 |
35 |
0 |
0 |
0 |
| VODI |
3 |
576 |
282 |
1299 |
303 |
35 |
0 |
0 |
| ODI |
0 |
4 |
16 |
837 |
1069 |
137 |
41 |
0 |
| CDI |
0 |
0 |
0 |
93 |
1325 |
4533 |
372 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
68 |
621 |
33 |
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 |
80654 |
5939 |
28 |
61 |
2 |
0 |
0 |
0 |
| OW |
161 |
1869 |
397 |
603 |
11 |
0 |
0 |
0 |
| VODI |
0 |
189 |
175 |
1666 |
202 |
4 |
0 |
0 |
| ODI |
0 |
0 |
3 |
436 |
1333 |
37 |
0 |
0 |
| CDI |
0 |
0 |
0 |
1 |
929 |
5545 |
20 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
120 |
31 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
80552 |
5286 |
17 |
42 |
0 |
0 |
0 |
0 |
| OW |
239 |
2033 |
215 |
361 |
19 |
0 |
0 |
0 |
| VODI |
24 |
663 |
343 |
1184 |
295 |
12 |
0 |
0 |
| ODI |
0 |
15 |
28 |
1106 |
981 |
113 |
0 |
0 |
| CDI |
0 |
0 |
0 |
74 |
1177 |
4897 |
51 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
5 |
684 |
0 |
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 |
81755 |
5101 |
16 |
17 |
0 |
0 |
0 |
0 |
| OW |
409 |
1750 |
333 |
404 |
13 |
0 |
0 |
0 |
| VODI |
27 |
207 |
212 |
1526 |
237 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
417 |
1201 |
98 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
665 |
4833 |
1055 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
115 |
24 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
81523 |
4050 |
10 |
47 |
0 |
0 |
0 |
0 |
| OW |
595 |
2096 |
175 |
246 |
30 |
2 |
0 |
0 |
| VODI |
73 |
890 |
337 |
1033 |
307 |
47 |
0 |
0 |
| ODI |
0 |
22 |
39 |
1001 |
849 |
213 |
8 |
0 |
| CDI |
0 |
0 |
0 |
37 |
930 |
4161 |
880 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
624 |
191 |
0 |
|
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