Validation of sea ice concentration - Full domain
Bulletin date: 2025-07-17
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
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 |
84554 |
17569 |
224 |
186 |
22 |
0 |
0 |
0 |
| OW |
1419 |
4265 |
760 |
838 |
132 |
10 |
0 |
0 |
| VODI |
2813 |
999 |
740 |
2977 |
1610 |
78 |
6 |
0 |
| ODI |
0 |
123 |
153 |
1076 |
4870 |
2196 |
18 |
0 |
| CDI |
0 |
66 |
51 |
317 |
9560 |
24754 |
1154 |
0 |
| VCDI |
0 |
0 |
0 |
10 |
795 |
12637 |
3828 |
0 |
|
...date precedes bulletin
|
Date: 2025-07-13:
| 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 |
85716 |
16418 |
116 |
98 |
25 |
2 |
0 |
0 |
| OW |
1462 |
4696 |
743 |
877 |
155 |
23 |
5 |
0 |
| VODI |
2785 |
1483 |
835 |
2824 |
1624 |
151 |
19 |
0 |
| ODI |
0 |
256 |
211 |
1407 |
4899 |
1576 |
133 |
0 |
| CDI |
0 |
117 |
63 |
369 |
7754 |
29160 |
2353 |
0 |
| VCDI |
0 |
3 |
2 |
20 |
817 |
10020 |
1593 |
0 |
|
...date precedes bulletin
|
Date: 2025-07-15:
| 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 |
87903 |
16398 |
137 |
90 |
14 |
3 |
0 |
0 |
| OW |
1616 |
4780 |
1279 |
1122 |
89 |
15 |
0 |
0 |
| VODI |
2536 |
294 |
692 |
3954 |
1522 |
41 |
0 |
0 |
| ODI |
0 |
8 |
23 |
746 |
9037 |
1161 |
3 |
0 |
| CDI |
0 |
4 |
8 |
78 |
6624 |
33130 |
1488 |
0 |
| VCDI |
0 |
0 |
0 |
5 |
474 |
3642 |
1894 |
0 |
|
...date precedes bulletin
|
Date: 2025-07-17:
| 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 |
87668 |
17030 |
139 |
99 |
9 |
6 |
0 |
0 |
| OW |
1605 |
5031 |
1119 |
1138 |
106 |
9 |
0 |
0 |
| VODI |
2513 |
702 |
904 |
3807 |
1577 |
54 |
0 |
0 |
| ODI |
0 |
31 |
79 |
1056 |
8536 |
1026 |
14 |
0 |
| CDI |
0 |
20 |
9 |
141 |
6662 |
32311 |
2195 |
0 |
| VCDI |
0 |
0 |
0 |
40 |
551 |
3046 |
1577 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
87659 |
17425 |
162 |
108 |
8 |
6 |
0 |
0 |
| OW |
1613 |
4633 |
1087 |
1157 |
113 |
12 |
0 |
0 |
| VODI |
2514 |
699 |
898 |
3722 |
1614 |
55 |
1 |
0 |
| ODI |
0 |
37 |
92 |
1086 |
8433 |
1305 |
14 |
0 |
| CDI |
0 |
20 |
10 |
166 |
6724 |
32048 |
2189 |
0 |
| VCDI |
0 |
0 |
1 |
42 |
549 |
3026 |
1582 |
0 |
|
Date: 2025-07-19:
| 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 |
90305 |
15065 |
138 |
57 |
4 |
0 |
0 |
0 |
| OW |
1739 |
5342 |
1076 |
1044 |
102 |
9 |
0 |
0 |
| VODI |
2481 |
1154 |
939 |
3500 |
1872 |
87 |
4 |
0 |
| ODI |
0 |
112 |
147 |
1247 |
6809 |
1120 |
18 |
0 |
| CDI |
0 |
25 |
22 |
160 |
7768 |
32538 |
2018 |
0 |
| VCDI |
0 |
0 |
0 |
48 |
443 |
3252 |
165 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
90298 |
15396 |
155 |
77 |
11 |
0 |
0 |
0 |
| OW |
1740 |
4964 |
1051 |
1081 |
99 |
12 |
0 |
0 |
| VODI |
2487 |
1169 |
922 |
3349 |
1929 |
79 |
7 |
0 |
| ODI |
0 |
143 |
165 |
1307 |
6917 |
1735 |
27 |
0 |
| CDI |
0 |
26 |
28 |
194 |
7597 |
31938 |
1936 |
0 |
| VCDI |
0 |
0 |
1 |
48 |
445 |
3242 |
235 |
0 |
|
Date: 2025-07-21:
| 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 |
91393 |
17250 |
183 |
82 |
9 |
0 |
0 |
0 |
| OW |
1717 |
5013 |
1787 |
1270 |
53 |
0 |
0 |
0 |
| VODI |
2359 |
61 |
319 |
4354 |
1967 |
15 |
0 |
0 |
| ODI |
0 |
15 |
8 |
338 |
11581 |
1055 |
0 |
0 |
| CDI |
0 |
16 |
18 |
115 |
3638 |
31155 |
583 |
0 |
| VCDI |
0 |
0 |
0 |
14 |
247 |
1377 |
2818 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
91250 |
15372 |
135 |
80 |
13 |
0 |
0 |
0 |
| OW |
1772 |
5402 |
1032 |
1117 |
144 |
13 |
0 |
0 |
| VODI |
2447 |
1310 |
895 |
3396 |
2103 |
133 |
0 |
0 |
| ODI |
0 |
224 |
194 |
1288 |
6273 |
1415 |
42 |
0 |
| CDI |
0 |
39 |
44 |
189 |
8552 |
29395 |
2380 |
0 |
| VCDI |
0 |
8 |
15 |
103 |
410 |
2646 |
979 |
0 |
|
Date: 2025-07-23:
| 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 |
93718 |
15665 |
197 |
68 |
7 |
0 |
0 |
0 |
| OW |
1914 |
5003 |
1490 |
1329 |
105 |
0 |
0 |
0 |
| VODI |
2330 |
264 |
526 |
4549 |
1893 |
25 |
0 |
0 |
| ODI |
0 |
17 |
14 |
577 |
10297 |
1110 |
10 |
0 |
| CDI |
0 |
36 |
25 |
103 |
8731 |
24181 |
648 |
0 |
| VCDI |
0 |
0 |
3 |
29 |
373 |
4133 |
1440 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
93347 |
13561 |
127 |
73 |
20 |
0 |
0 |
0 |
| OW |
2194 |
5655 |
975 |
1160 |
145 |
9 |
0 |
0 |
| VODI |
2421 |
1386 |
899 |
3700 |
1994 |
95 |
3 |
0 |
| ODI |
0 |
308 |
198 |
1391 |
6674 |
1222 |
75 |
0 |
| CDI |
0 |
52 |
37 |
226 |
12045 |
23912 |
1054 |
0 |
| VCDI |
0 |
23 |
19 |
105 |
528 |
4211 |
966 |
0 |
|
Date: 2025-07-25:
| 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 |
95598 |
14941 |
174 |
51 |
11 |
0 |
0 |
0 |
| OW |
1925 |
5201 |
1192 |
1326 |
108 |
2 |
0 |
0 |
| VODI |
2295 |
658 |
674 |
4026 |
2245 |
51 |
0 |
0 |
| ODI |
0 |
26 |
36 |
684 |
7950 |
2427 |
9 |
0 |
| CDI |
0 |
62 |
33 |
83 |
8130 |
24937 |
266 |
0 |
| VCDI |
0 |
6 |
18 |
96 |
979 |
4392 |
198 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
95245 |
12447 |
152 |
91 |
41 |
2 |
0 |
0 |
| OW |
2185 |
5809 |
881 |
1156 |
221 |
6 |
0 |
0 |
| VODI |
2388 |
1968 |
745 |
3105 |
1968 |
271 |
14 |
0 |
| ODI |
0 |
516 |
264 |
1498 |
5043 |
2622 |
67 |
0 |
| CDI |
0 |
87 |
40 |
291 |
10772 |
24087 |
178 |
0 |
| VCDI |
0 |
67 |
45 |
125 |
1378 |
4821 |
214 |
0 |
|
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