Validation of sea ice concentration - Full domain
Bulletin date: 2025-06-05
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-05-30:
| 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 |
64933 |
12303 |
67 |
31 |
5 |
0 |
0 |
0 |
| OW |
881 |
3470 |
638 |
738 |
154 |
20 |
2 |
0 |
| VODI |
2469 |
1351 |
681 |
2043 |
1060 |
202 |
24 |
0 |
| ODI |
1082 |
318 |
192 |
1165 |
3028 |
1133 |
191 |
0 |
| CDI |
0 |
154 |
112 |
627 |
3251 |
9081 |
5216 |
1 |
| VCDI |
0 |
56 |
46 |
238 |
663 |
11080 |
39873 |
12231 |
|
...date precedes bulletin
|
Date: 2025-06-01:
| 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 |
64907 |
12213 |
84 |
58 |
13 |
0 |
6 |
0 |
| OW |
915 |
3634 |
768 |
875 |
174 |
10 |
26 |
0 |
| VODI |
2567 |
1554 |
638 |
2083 |
1181 |
185 |
56 |
0 |
| ODI |
977 |
409 |
251 |
1297 |
2799 |
1092 |
267 |
0 |
| CDI |
0 |
201 |
135 |
749 |
3554 |
9088 |
7146 |
0 |
| VCDI |
0 |
12 |
16 |
135 |
670 |
8181 |
35672 |
16212 |
|
...date precedes bulletin
|
Date: 2025-06-03:
| 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 |
64678 |
14073 |
133 |
81 |
14 |
1 |
9 |
0 |
| OW |
894 |
3899 |
869 |
885 |
125 |
20 |
17 |
0 |
| VODI |
2769 |
858 |
746 |
2904 |
1226 |
121 |
16 |
0 |
| ODI |
759 |
79 |
108 |
1172 |
3999 |
1231 |
137 |
0 |
| CDI |
0 |
80 |
56 |
415 |
2761 |
11985 |
3100 |
0 |
| VCDI |
0 |
17 |
17 |
97 |
615 |
7885 |
34861 |
17098 |
|
...date precedes bulletin
|
Date: 2025-06-05:
| 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 |
66106 |
13221 |
85 |
32 |
1 |
0 |
0 |
0 |
| OW |
900 |
4357 |
774 |
809 |
118 |
20 |
5 |
0 |
| VODI |
3013 |
1118 |
796 |
2595 |
1371 |
157 |
31 |
0 |
| ODI |
506 |
129 |
165 |
1270 |
3653 |
1301 |
179 |
0 |
| CDI |
0 |
86 |
66 |
497 |
3574 |
12031 |
4390 |
9 |
| VCDI |
0 |
13 |
10 |
55 |
515 |
5958 |
35982 |
14912 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
66106 |
13268 |
93 |
35 |
0 |
0 |
1 |
0 |
| OW |
900 |
4275 |
751 |
821 |
131 |
19 |
1 |
0 |
| VODI |
2995 |
1149 |
829 |
2564 |
1344 |
165 |
29 |
0 |
| ODI |
524 |
125 |
138 |
1247 |
3618 |
1245 |
201 |
0 |
| CDI |
0 |
89 |
74 |
532 |
3591 |
11865 |
4429 |
8 |
| VCDI |
0 |
18 |
11 |
59 |
548 |
6173 |
35926 |
14913 |
|
Date: 2025-06-07:
| 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 |
67248 |
12603 |
42 |
29 |
4 |
0 |
1 |
0 |
| OW |
908 |
4656 |
675 |
796 |
149 |
14 |
2 |
0 |
| VODI |
3509 |
1428 |
767 |
2483 |
1378 |
147 |
36 |
0 |
| ODI |
7 |
233 |
264 |
1562 |
3525 |
1099 |
209 |
0 |
| CDI |
0 |
84 |
68 |
563 |
3375 |
11000 |
5313 |
13 |
| VCDI |
0 |
25 |
27 |
83 |
382 |
4811 |
29478 |
21814 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67248 |
12626 |
67 |
42 |
9 |
0 |
1 |
0 |
| OW |
908 |
4529 |
656 |
812 |
169 |
17 |
2 |
0 |
| VODI |
3510 |
1530 |
760 |
2454 |
1307 |
144 |
48 |
0 |
| ODI |
6 |
221 |
262 |
1508 |
3512 |
1067 |
217 |
0 |
| CDI |
0 |
90 |
74 |
634 |
3400 |
10800 |
5259 |
14 |
| VCDI |
0 |
33 |
24 |
66 |
416 |
5043 |
29512 |
21813 |
|
Date: 2025-06-09:
| 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 |
67440 |
14398 |
128 |
55 |
7 |
0 |
1 |
0 |
| OW |
927 |
4008 |
813 |
777 |
97 |
7 |
0 |
0 |
| VODI |
3495 |
893 |
797 |
3377 |
1485 |
62 |
11 |
0 |
| ODI |
0 |
136 |
98 |
1333 |
4775 |
1416 |
56 |
0 |
| CDI |
0 |
72 |
19 |
355 |
2412 |
10745 |
2143 |
0 |
| VCDI |
0 |
0 |
6 |
33 |
164 |
4844 |
36253 |
17172 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67439 |
12737 |
87 |
41 |
12 |
0 |
1 |
0 |
| OW |
925 |
4492 |
732 |
998 |
185 |
10 |
1 |
0 |
| VODI |
3494 |
1682 |
677 |
2413 |
1571 |
173 |
51 |
0 |
| ODI |
4 |
363 |
243 |
1626 |
3060 |
1290 |
267 |
0 |
| CDI |
0 |
212 |
107 |
765 |
3816 |
10722 |
5942 |
0 |
| VCDI |
0 |
21 |
15 |
87 |
296 |
4879 |
32202 |
17172 |
|
Date: 2025-06-11:
| 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 |
67486 |
14980 |
106 |
72 |
8 |
0 |
1 |
0 |
| OW |
936 |
4236 |
758 |
805 |
112 |
19 |
2 |
0 |
| VODI |
3485 |
1199 |
850 |
3311 |
1551 |
130 |
21 |
0 |
| ODI |
0 |
142 |
116 |
1082 |
3670 |
1994 |
103 |
0 |
| CDI |
0 |
87 |
79 |
337 |
2145 |
10123 |
5022 |
1 |
| VCDI |
0 |
0 |
0 |
30 |
664 |
7269 |
32655 |
15223 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67485 |
13108 |
110 |
96 |
18 |
1 |
1 |
0 |
| OW |
934 |
4761 |
610 |
970 |
192 |
20 |
2 |
0 |
| VODI |
3488 |
2040 |
759 |
2395 |
1410 |
331 |
92 |
0 |
| ODI |
0 |
474 |
280 |
1487 |
2570 |
1455 |
321 |
0 |
| CDI |
0 |
226 |
130 |
593 |
3142 |
11085 |
7311 |
34 |
| VCDI |
0 |
35 |
20 |
96 |
818 |
6643 |
30077 |
15190 |
|
Date: 2025-06-13:
| 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 |
67305 |
15917 |
165 |
88 |
9 |
0 |
1 |
0 |
| OW |
947 |
4486 |
737 |
817 |
142 |
20 |
1 |
0 |
| VODI |
3477 |
1370 |
851 |
3163 |
1525 |
179 |
36 |
0 |
| ODI |
0 |
184 |
175 |
1176 |
3046 |
1534 |
267 |
0 |
| CDI |
0 |
149 |
84 |
410 |
2467 |
8897 |
5496 |
18 |
| VCDI |
0 |
3 |
6 |
45 |
1752 |
10365 |
26624 |
16876 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67304 |
13938 |
165 |
145 |
34 |
2 |
2 |
0 |
| OW |
942 |
4844 |
643 |
938 |
196 |
22 |
5 |
0 |
| VODI |
3483 |
2353 |
691 |
2229 |
1337 |
323 |
141 |
0 |
| ODI |
0 |
596 |
355 |
1584 |
2290 |
1301 |
381 |
0 |
| CDI |
0 |
255 |
149 |
727 |
3377 |
10482 |
7932 |
4 |
| VCDI |
0 |
123 |
15 |
76 |
1707 |
8865 |
23964 |
16890 |
|
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