Validation of sea ice concentration - European sector
Bulletin date: 2025-10-16
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-10-10:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-10-12:
| 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 |
88199 |
3534 |
154 |
74 |
0 |
0 |
0 |
0 |
| OW |
0 |
83 |
131 |
281 |
32 |
0 |
0 |
0 |
| VODI |
0 |
3 |
11 |
277 |
61 |
15 |
0 |
0 |
| ODI |
0 |
0 |
0 |
91 |
208 |
30 |
0 |
0 |
| CDI |
0 |
0 |
0 |
23 |
292 |
186 |
75 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
85 |
2556 |
3935 |
80 |
|
...date precedes bulletin
|
Date: 2025-10-14:
| 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 |
87102 |
4308 |
376 |
100 |
5 |
0 |
0 |
0 |
| OW |
0 |
173 |
139 |
258 |
36 |
0 |
0 |
0 |
| VODI |
0 |
3 |
26 |
240 |
81 |
4 |
0 |
0 |
| ODI |
0 |
0 |
0 |
152 |
125 |
15 |
0 |
0 |
| CDI |
0 |
0 |
0 |
87 |
319 |
320 |
11 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
154 |
2831 |
2949 |
602 |
|
...date precedes bulletin
|
Date: 2025-10-16:
| 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 |
86868 |
4012 |
203 |
312 |
11 |
4 |
0 |
0 |
| OW |
0 |
68 |
68 |
319 |
102 |
33 |
0 |
0 |
| VODI |
0 |
4 |
10 |
190 |
256 |
81 |
0 |
0 |
| ODI |
0 |
0 |
2 |
58 |
228 |
90 |
0 |
0 |
| CDI |
0 |
0 |
0 |
34 |
225 |
569 |
50 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
52 |
4138 |
2146 |
283 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
86868 |
4004 |
208 |
353 |
42 |
9 |
0 |
0 |
| OW |
0 |
80 |
63 |
280 |
86 |
33 |
0 |
0 |
| VODI |
0 |
0 |
12 |
191 |
239 |
99 |
0 |
0 |
| ODI |
0 |
0 |
0 |
54 |
218 |
70 |
0 |
0 |
| CDI |
0 |
0 |
0 |
35 |
247 |
553 |
65 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
42 |
4151 |
2131 |
283 |
|
Date: 2025-10-18:
| 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 |
86741 |
3605 |
186 |
297 |
47 |
0 |
0 |
0 |
| OW |
0 |
70 |
50 |
331 |
131 |
4 |
0 |
0 |
| VODI |
0 |
0 |
5 |
220 |
236 |
100 |
0 |
0 |
| ODI |
0 |
0 |
0 |
24 |
327 |
230 |
0 |
0 |
| CDI |
0 |
0 |
0 |
12 |
192 |
641 |
35 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
76 |
4814 |
2017 |
25 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
86741 |
3580 |
183 |
297 |
73 |
0 |
0 |
0 |
| OW |
0 |
93 |
48 |
318 |
127 |
4 |
0 |
0 |
| VODI |
0 |
2 |
10 |
233 |
219 |
103 |
0 |
0 |
| ODI |
0 |
0 |
0 |
21 |
322 |
240 |
0 |
0 |
| CDI |
0 |
0 |
0 |
15 |
194 |
555 |
53 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
74 |
4887 |
1999 |
25 |
|
Date: 2025-10-20:
| 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 |
86543 |
3676 |
174 |
162 |
4 |
5 |
0 |
0 |
| OW |
0 |
38 |
71 |
317 |
46 |
1 |
0 |
0 |
| VODI |
0 |
0 |
0 |
347 |
203 |
6 |
0 |
0 |
| ODI |
0 |
0 |
0 |
11 |
539 |
21 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
455 |
1000 |
0 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
28 |
4944 |
1619 |
206 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
86543 |
3544 |
127 |
221 |
49 |
4 |
0 |
0 |
| OW |
0 |
168 |
95 |
245 |
126 |
3 |
0 |
0 |
| VODI |
0 |
2 |
23 |
298 |
309 |
14 |
0 |
0 |
| ODI |
0 |
0 |
0 |
70 |
392 |
101 |
0 |
0 |
| CDI |
0 |
0 |
0 |
3 |
306 |
645 |
0 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
93 |
5210 |
1619 |
206 |
|
Date: 2025-10-22:
| 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 |
86088 |
3963 |
136 |
316 |
0 |
1 |
0 |
0 |
| OW |
0 |
67 |
101 |
266 |
57 |
2 |
0 |
0 |
| VODI |
0 |
0 |
10 |
197 |
271 |
9 |
0 |
0 |
| ODI |
0 |
0 |
0 |
62 |
328 |
31 |
0 |
0 |
| CDI |
0 |
0 |
0 |
1 |
333 |
899 |
16 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
3 |
3865 |
3288 |
106 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
86088 |
3765 |
127 |
350 |
39 |
2 |
0 |
0 |
| OW |
0 |
251 |
59 |
202 |
126 |
20 |
0 |
0 |
| VODI |
0 |
14 |
61 |
183 |
284 |
48 |
0 |
0 |
| ODI |
0 |
0 |
0 |
101 |
224 |
141 |
0 |
0 |
| CDI |
0 |
0 |
0 |
6 |
288 |
639 |
0 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
31 |
3957 |
3304 |
106 |
|
Date: 2025-10-24:
| 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 |
85818 |
4090 |
154 |
304 |
7 |
0 |
0 |
0 |
| OW |
0 |
49 |
97 |
267 |
85 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
181 |
228 |
25 |
0 |
0 |
| ODI |
0 |
0 |
0 |
42 |
244 |
85 |
0 |
0 |
| CDI |
0 |
0 |
0 |
4 |
377 |
493 |
56 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
19 |
2951 |
4404 |
436 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
85818 |
3986 |
160 |
346 |
31 |
0 |
0 |
0 |
| OW |
0 |
144 |
72 |
209 |
141 |
1 |
0 |
0 |
| VODI |
0 |
9 |
19 |
201 |
247 |
38 |
0 |
0 |
| ODI |
0 |
0 |
0 |
42 |
328 |
153 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
201 |
590 |
74 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
12 |
2772 |
4386 |
436 |
|
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