Validation of sea ice concentration - European sector
Bulletin date: 2025-08-07
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-08-01:
| 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 |
83095 |
4832 |
48 |
29 |
3 |
0 |
0 |
0 |
| OW |
1979 |
1255 |
315 |
246 |
12 |
0 |
0 |
0 |
| VODI |
1947 |
226 |
281 |
764 |
166 |
2 |
1 |
0 |
| ODI |
0 |
3 |
20 |
192 |
1976 |
259 |
2 |
0 |
| CDI |
0 |
0 |
3 |
15 |
853 |
2774 |
396 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
973 |
195 |
0 |
|
...date precedes bulletin
|
Date: 2025-08-03:
| 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 |
83810 |
4007 |
46 |
17 |
3 |
0 |
0 |
0 |
| OW |
2014 |
1445 |
287 |
232 |
17 |
0 |
0 |
0 |
| VODI |
1907 |
439 |
269 |
649 |
131 |
5 |
1 |
0 |
| ODI |
0 |
13 |
16 |
226 |
1816 |
356 |
1 |
0 |
| CDI |
0 |
0 |
4 |
18 |
946 |
2475 |
721 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
710 |
281 |
0 |
|
...date precedes bulletin
|
Date: 2025-08-05:
| 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 |
85532 |
2881 |
61 |
18 |
1 |
0 |
0 |
0 |
| OW |
2178 |
1738 |
342 |
282 |
14 |
0 |
0 |
0 |
| VODI |
1899 |
71 |
142 |
527 |
195 |
3 |
0 |
0 |
| ODI |
0 |
0 |
3 |
75 |
2342 |
193 |
0 |
0 |
| CDI |
0 |
0 |
0 |
4 |
793 |
2456 |
591 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
8 |
513 |
0 |
|
...date precedes bulletin
|
Date: 2025-08-07:
| 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 |
84646 |
4086 |
43 |
22 |
1 |
0 |
0 |
0 |
| OW |
2043 |
1912 |
267 |
271 |
20 |
2 |
0 |
0 |
| VODI |
1869 |
211 |
112 |
403 |
160 |
13 |
0 |
0 |
| ODI |
0 |
7 |
24 |
119 |
1941 |
230 |
4 |
0 |
| CDI |
0 |
0 |
0 |
9 |
820 |
2145 |
1188 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
19 |
275 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
84647 |
4186 |
55 |
31 |
1 |
0 |
0 |
0 |
| OW |
2042 |
1810 |
260 |
310 |
24 |
2 |
0 |
0 |
| VODI |
1869 |
203 |
104 |
348 |
165 |
18 |
0 |
0 |
| ODI |
0 |
17 |
27 |
125 |
1791 |
248 |
3 |
0 |
| CDI |
0 |
0 |
0 |
10 |
961 |
2125 |
1099 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
16 |
365 |
0 |
|
Date: 2025-08-09:
| 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 |
85741 |
3332 |
37 |
20 |
0 |
0 |
0 |
0 |
| OW |
2155 |
1766 |
250 |
246 |
32 |
4 |
0 |
0 |
| VODI |
1832 |
246 |
68 |
318 |
185 |
42 |
0 |
0 |
| ODI |
0 |
30 |
29 |
121 |
1988 |
103 |
0 |
0 |
| CDI |
0 |
0 |
0 |
8 |
1108 |
2816 |
190 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
124 |
69 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
85739 |
3403 |
56 |
36 |
1 |
0 |
0 |
0 |
| OW |
2157 |
1696 |
229 |
281 |
41 |
10 |
0 |
0 |
| VODI |
1832 |
235 |
70 |
263 |
168 |
41 |
0 |
0 |
| ODI |
0 |
40 |
29 |
124 |
1877 |
130 |
0 |
0 |
| CDI |
0 |
0 |
0 |
9 |
1225 |
2744 |
192 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
3 |
164 |
67 |
0 |
|
Date: 2025-08-11:
| 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 |
85520 |
3905 |
113 |
56 |
6 |
2 |
0 |
0 |
| OW |
2195 |
1666 |
176 |
219 |
58 |
26 |
1 |
0 |
| VODI |
1796 |
191 |
62 |
207 |
152 |
54 |
0 |
0 |
| ODI |
0 |
46 |
28 |
164 |
1717 |
108 |
0 |
0 |
| CDI |
0 |
0 |
0 |
16 |
1542 |
2588 |
143 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
25 |
78 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
85520 |
3881 |
98 |
48 |
7 |
2 |
0 |
0 |
| OW |
2196 |
1666 |
185 |
218 |
52 |
23 |
0 |
0 |
| VODI |
1795 |
221 |
67 |
213 |
144 |
50 |
1 |
0 |
| ODI |
0 |
40 |
29 |
168 |
1720 |
116 |
0 |
0 |
| CDI |
0 |
0 |
0 |
15 |
1550 |
2597 |
145 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
15 |
76 |
0 |
|
Date: 2025-08-13:
| 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 |
86887 |
3600 |
122 |
45 |
2 |
0 |
0 |
0 |
| OW |
2264 |
1133 |
133 |
169 |
42 |
2 |
0 |
0 |
| VODI |
1706 |
16 |
43 |
272 |
173 |
22 |
0 |
0 |
| ODI |
0 |
0 |
0 |
106 |
2688 |
352 |
0 |
0 |
| CDI |
0 |
0 |
0 |
1 |
557 |
2143 |
232 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
118 |
32 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
86847 |
2880 |
81 |
36 |
11 |
0 |
0 |
0 |
| OW |
2249 |
1625 |
136 |
189 |
60 |
23 |
0 |
0 |
| VODI |
1761 |
202 |
58 |
177 |
132 |
47 |
0 |
0 |
| ODI |
0 |
42 |
23 |
160 |
1419 |
167 |
0 |
0 |
| CDI |
0 |
0 |
0 |
31 |
1840 |
2350 |
243 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
50 |
21 |
0 |
|
Date: 2025-08-15:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
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