Validation of sea ice concentration - European sector
Bulletin date: 2025-07-03
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-06-27:
| 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 |
72304 |
9728 |
72 |
48 |
0 |
0 |
0 |
0 |
| OW |
1181 |
2111 |
256 |
265 |
33 |
5 |
0 |
0 |
| VODI |
3192 |
316 |
276 |
796 |
265 |
57 |
2 |
0 |
| ODI |
0 |
40 |
36 |
311 |
863 |
185 |
30 |
0 |
| CDI |
0 |
32 |
45 |
228 |
782 |
1340 |
571 |
1 |
| VCDI |
0 |
0 |
0 |
2 |
55 |
2012 |
4601 |
821 |
|
...date precedes bulletin
|
Date: 2025-06-29:
| 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 |
73273 |
9435 |
68 |
43 |
0 |
0 |
0 |
0 |
| OW |
1238 |
1900 |
199 |
201 |
24 |
4 |
0 |
0 |
| VODI |
3176 |
463 |
211 |
576 |
233 |
46 |
1 |
0 |
| ODI |
0 |
81 |
60 |
361 |
763 |
184 |
15 |
0 |
| CDI |
0 |
36 |
63 |
265 |
945 |
1075 |
466 |
0 |
| VCDI |
0 |
0 |
0 |
20 |
83 |
1326 |
5968 |
60 |
|
...date precedes bulletin
|
Date: 2025-07-01:
| 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 |
74214 |
9851 |
54 |
35 |
0 |
0 |
0 |
0 |
| OW |
1204 |
1625 |
308 |
253 |
22 |
0 |
0 |
0 |
| VODI |
3117 |
92 |
169 |
706 |
311 |
6 |
0 |
0 |
| ODI |
0 |
6 |
23 |
234 |
934 |
194 |
9 |
0 |
| CDI |
0 |
0 |
10 |
69 |
898 |
1629 |
142 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
14 |
1380 |
5353 |
0 |
|
...date precedes bulletin
|
Date: 2025-07-03:
| 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 |
75248 |
9204 |
36 |
15 |
0 |
0 |
0 |
0 |
| OW |
1257 |
1382 |
274 |
205 |
31 |
0 |
0 |
0 |
| VODI |
2954 |
250 |
181 |
614 |
351 |
15 |
0 |
0 |
| ODI |
0 |
50 |
56 |
342 |
1148 |
269 |
9 |
0 |
| CDI |
0 |
18 |
40 |
142 |
1207 |
894 |
117 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
574 |
1961 |
3878 |
140 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
75250 |
9256 |
36 |
19 |
3 |
0 |
0 |
0 |
| OW |
1249 |
1328 |
284 |
208 |
28 |
0 |
0 |
0 |
| VODI |
2960 |
258 |
172 |
596 |
333 |
16 |
0 |
0 |
| ODI |
0 |
51 |
59 |
362 |
1115 |
251 |
11 |
0 |
| CDI |
0 |
11 |
36 |
133 |
1237 |
959 |
128 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
595 |
1913 |
3865 |
140 |
|
Date: 2025-07-05:
| 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 |
75704 |
8632 |
44 |
12 |
0 |
0 |
0 |
0 |
| OW |
1324 |
1257 |
256 |
247 |
27 |
0 |
0 |
0 |
| VODI |
2933 |
338 |
221 |
733 |
324 |
23 |
0 |
1 |
| ODI |
0 |
102 |
59 |
567 |
1042 |
260 |
9 |
11 |
| CDI |
0 |
35 |
36 |
154 |
1149 |
1045 |
200 |
11 |
| VCDI |
0 |
0 |
0 |
0 |
443 |
3263 |
2196 |
204 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
75668 |
8697 |
47 |
19 |
4 |
0 |
0 |
0 |
| OW |
1356 |
1211 |
256 |
255 |
36 |
0 |
0 |
0 |
| VODI |
2937 |
330 |
216 |
687 |
308 |
32 |
0 |
0 |
| ODI |
0 |
98 |
63 |
598 |
973 |
256 |
12 |
12 |
| CDI |
0 |
28 |
34 |
154 |
1185 |
1077 |
284 |
12 |
| VCDI |
0 |
0 |
0 |
0 |
479 |
3226 |
2109 |
203 |
|
Date: 2025-07-07:
| 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 |
74384 |
10542 |
84 |
56 |
0 |
0 |
0 |
0 |
| OW |
1353 |
1471 |
443 |
341 |
15 |
0 |
0 |
0 |
| VODI |
2855 |
52 |
148 |
1233 |
474 |
1 |
0 |
0 |
| ODI |
0 |
5 |
18 |
211 |
1210 |
212 |
3 |
0 |
| CDI |
0 |
0 |
0 |
3 |
877 |
2796 |
77 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
20 |
1759 |
2219 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
74328 |
10044 |
86 |
62 |
4 |
0 |
0 |
0 |
| OW |
1350 |
1310 |
226 |
262 |
48 |
0 |
0 |
0 |
| VODI |
2914 |
477 |
232 |
672 |
321 |
14 |
1 |
0 |
| ODI |
0 |
164 |
112 |
662 |
869 |
199 |
11 |
0 |
| CDI |
0 |
75 |
37 |
186 |
973 |
1146 |
344 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
381 |
3409 |
1943 |
0 |
|
Date: 2025-07-09:
| 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 |
76576 |
8398 |
71 |
35 |
2 |
0 |
0 |
0 |
| OW |
1393 |
1541 |
373 |
318 |
40 |
0 |
1 |
0 |
| VODI |
2831 |
228 |
270 |
1164 |
355 |
20 |
1 |
0 |
| ODI |
0 |
12 |
40 |
248 |
967 |
304 |
15 |
0 |
| CDI |
0 |
0 |
0 |
49 |
737 |
2426 |
437 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
89 |
2604 |
1317 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
76519 |
7876 |
57 |
36 |
4 |
0 |
0 |
0 |
| OW |
1381 |
1369 |
215 |
229 |
44 |
0 |
1 |
0 |
| VODI |
2900 |
684 |
301 |
701 |
253 |
28 |
4 |
0 |
| ODI |
0 |
196 |
125 |
596 |
760 |
281 |
41 |
0 |
| CDI |
0 |
54 |
56 |
252 |
766 |
1253 |
416 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
363 |
3792 |
1309 |
0 |
|
Date: 2025-07-11:
| 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 |
76021 |
8601 |
112 |
121 |
7 |
0 |
0 |
0 |
| OW |
1369 |
1697 |
345 |
323 |
26 |
0 |
0 |
0 |
| VODI |
2812 |
406 |
312 |
1190 |
243 |
21 |
2 |
0 |
| ODI |
0 |
19 |
34 |
465 |
1099 |
188 |
17 |
0 |
| CDI |
0 |
0 |
0 |
40 |
1496 |
2266 |
425 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
6 |
2538 |
661 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
75975 |
8283 |
128 |
127 |
8 |
0 |
0 |
0 |
| OW |
1357 |
1307 |
230 |
321 |
21 |
0 |
0 |
0 |
| VODI |
2870 |
794 |
302 |
816 |
153 |
2 |
3 |
0 |
| ODI |
0 |
259 |
89 |
601 |
948 |
179 |
55 |
0 |
| CDI |
0 |
80 |
54 |
274 |
1274 |
1246 |
398 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
473 |
3586 |
649 |
0 |
|
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