Validation of sea ice concentration - Full domain
Bulletin date: 2025-07-03
Data source: OSI SAF N.H. multi-product 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 |
91913 |
15882 |
117 |
176 |
20 |
0 |
0 |
0 |
| OW |
250 |
5012 |
803 |
913 |
116 |
13 |
0 |
0 |
| VODI |
16 |
868 |
566 |
3496 |
1376 |
178 |
2 |
0 |
| ODI |
3 |
21 |
25 |
2063 |
3961 |
1054 |
32 |
0 |
| CDI |
0 |
36 |
3 |
538 |
4033 |
14398 |
2038 |
73 |
| VCDI |
0 |
1 |
0 |
0 |
1202 |
19396 |
18005 |
6144 |
|
...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 |
93845 |
15174 |
108 |
217 |
19 |
0 |
0 |
0 |
| OW |
484 |
4786 |
753 |
836 |
157 |
37 |
0 |
0 |
| VODI |
32 |
1165 |
574 |
3392 |
1232 |
282 |
2 |
0 |
| ODI |
9 |
98 |
109 |
2328 |
3280 |
1231 |
23 |
8 |
| CDI |
0 |
38 |
5 |
617 |
4766 |
13555 |
1740 |
13 |
| VCDI |
0 |
0 |
0 |
0 |
1593 |
20010 |
16574 |
5651 |
|
...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 |
95185 |
17026 |
160 |
149 |
7 |
0 |
0 |
0 |
| OW |
318 |
4307 |
1167 |
2183 |
164 |
2 |
1 |
0 |
| VODI |
18 |
224 |
201 |
3853 |
1438 |
65 |
0 |
0 |
| ODI |
0 |
21 |
5 |
543 |
5511 |
831 |
1 |
8 |
| CDI |
0 |
2 |
0 |
29 |
6299 |
15788 |
1791 |
14 |
| VCDI |
0 |
0 |
0 |
0 |
900 |
14684 |
15028 |
6820 |
|
...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 |
95346 |
17243 |
215 |
304 |
36 |
0 |
0 |
0 |
| OW |
275 |
4595 |
1043 |
2192 |
205 |
25 |
0 |
0 |
| VODI |
41 |
328 |
303 |
3146 |
1646 |
94 |
3 |
0 |
| ODI |
0 |
33 |
31 |
935 |
6050 |
872 |
11 |
3 |
| CDI |
0 |
1 |
3 |
183 |
7878 |
13315 |
741 |
8 |
| VCDI |
0 |
0 |
0 |
0 |
1335 |
17331 |
16363 |
2610 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
95267 |
17478 |
261 |
332 |
52 |
3 |
0 |
0 |
| OW |
354 |
4325 |
1021 |
2106 |
189 |
31 |
0 |
0 |
| VODI |
41 |
363 |
284 |
3172 |
1535 |
98 |
3 |
0 |
| ODI |
0 |
31 |
28 |
985 |
5990 |
797 |
13 |
2 |
| CDI |
0 |
3 |
1 |
165 |
8003 |
13126 |
798 |
9 |
| VCDI |
0 |
0 |
0 |
0 |
1381 |
17582 |
16304 |
2610 |
|
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 |
96886 |
15319 |
591 |
931 |
132 |
5 |
0 |
0 |
| OW |
328 |
4949 |
803 |
2021 |
280 |
44 |
0 |
0 |
| VODI |
27 |
421 |
397 |
3119 |
1466 |
190 |
1 |
1 |
| ODI |
0 |
53 |
58 |
1340 |
6118 |
671 |
10 |
13 |
| CDI |
0 |
0 |
7 |
235 |
7751 |
11799 |
843 |
16 |
| VCDI |
0 |
0 |
0 |
0 |
3516 |
18805 |
13957 |
1640 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
96820 |
15510 |
638 |
995 |
148 |
17 |
0 |
0 |
| OW |
390 |
4800 |
778 |
1926 |
257 |
58 |
0 |
0 |
| VODI |
31 |
386 |
388 |
3088 |
1338 |
162 |
1 |
0 |
| ODI |
0 |
46 |
47 |
1414 |
6004 |
634 |
12 |
13 |
| CDI |
0 |
0 |
5 |
223 |
8138 |
11628 |
1025 |
18 |
| VCDI |
0 |
0 |
0 |
0 |
3378 |
19015 |
13773 |
1639 |
|
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 |
100322 |
17602 |
248 |
204 |
21 |
0 |
0 |
0 |
| OW |
305 |
2940 |
1074 |
2202 |
87 |
7 |
0 |
0 |
| VODI |
15 |
72 |
99 |
3767 |
1619 |
44 |
0 |
0 |
| ODI |
0 |
2 |
1 |
296 |
9058 |
317 |
1 |
0 |
| CDI |
0 |
0 |
1 |
32 |
6993 |
23591 |
304 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
574 |
8962 |
13253 |
730 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
99793 |
15458 |
166 |
157 |
53 |
28 |
0 |
0 |
| OW |
811 |
4272 |
628 |
1297 |
222 |
64 |
0 |
0 |
| VODI |
37 |
729 |
498 |
2931 |
1235 |
142 |
4 |
0 |
| ODI |
1 |
139 |
85 |
1693 |
5603 |
545 |
20 |
0 |
| CDI |
0 |
18 |
45 |
408 |
8755 |
13041 |
746 |
0 |
| VCDI |
0 |
0 |
1 |
15 |
2484 |
19101 |
12788 |
730 |
|
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 |
102544 |
16207 |
173 |
197 |
17 |
0 |
0 |
0 |
| OW |
267 |
3234 |
863 |
1718 |
98 |
3 |
0 |
0 |
| VODI |
18 |
290 |
353 |
4042 |
1407 |
55 |
0 |
0 |
| ODI |
0 |
5 |
5 |
584 |
6956 |
1325 |
13 |
0 |
| CDI |
0 |
0 |
0 |
95 |
5803 |
26356 |
635 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
4081 |
12505 |
4892 |
2 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
101925 |
14316 |
109 |
138 |
44 |
0 |
0 |
0 |
| OW |
842 |
3986 |
494 |
1164 |
198 |
63 |
0 |
0 |
| VODI |
59 |
1256 |
591 |
2965 |
1203 |
135 |
0 |
0 |
| ODI |
3 |
166 |
165 |
1763 |
4599 |
921 |
39 |
0 |
| CDI |
0 |
12 |
35 |
593 |
6281 |
18077 |
679 |
0 |
| VCDI |
0 |
0 |
0 |
13 |
6037 |
21048 |
4822 |
2 |
|
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 |
103364 |
15390 |
83 |
194 |
21 |
0 |
0 |
0 |
| OW |
199 |
3685 |
710 |
1573 |
144 |
5 |
0 |
0 |
| VODI |
8 |
714 |
378 |
3830 |
1775 |
36 |
0 |
0 |
| ODI |
0 |
34 |
33 |
1066 |
6367 |
1278 |
17 |
0 |
| CDI |
0 |
1 |
10 |
269 |
10918 |
23697 |
1353 |
0 |
| VCDI |
0 |
0 |
0 |
15 |
1615 |
11248 |
4713 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
102843 |
13768 |
67 |
203 |
16 |
0 |
0 |
0 |
| OW |
646 |
4204 |
399 |
989 |
305 |
18 |
0 |
0 |
| VODI |
81 |
1432 |
571 |
3236 |
1389 |
68 |
0 |
0 |
| ODI |
1 |
314 |
106 |
1692 |
4927 |
587 |
48 |
0 |
| CDI |
0 |
104 |
71 |
802 |
11081 |
18533 |
995 |
0 |
| VCDI |
0 |
2 |
0 |
25 |
3122 |
17058 |
5040 |
0 |
|
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