Validation of sea ice concentration - Full domain
Bulletin date: 2025-06-19
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
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 |
82415 |
16121 |
205 |
221 |
16 |
3 |
0 |
0 |
| OW |
196 |
4344 |
900 |
1142 |
132 |
4 |
0 |
0 |
| VODI |
12 |
879 |
589 |
4454 |
1592 |
101 |
12 |
0 |
| ODI |
0 |
42 |
71 |
1333 |
4073 |
1087 |
83 |
0 |
| CDI |
0 |
28 |
14 |
273 |
3296 |
9885 |
4697 |
72 |
| VCDI |
0 |
0 |
0 |
12 |
1520 |
10248 |
20790 |
23881 |
|
...date precedes bulletin
|
Date: 2025-06-15:
| 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 |
84005 |
14836 |
152 |
123 |
26 |
0 |
2 |
0 |
| OW |
111 |
4758 |
848 |
1262 |
229 |
2 |
0 |
0 |
| VODI |
3 |
1171 |
605 |
4080 |
1812 |
119 |
5 |
0 |
| ODI |
0 |
88 |
105 |
1536 |
3623 |
1256 |
120 |
0 |
| CDI |
0 |
31 |
25 |
361 |
3165 |
9375 |
4839 |
62 |
| VCDI |
0 |
0 |
0 |
10 |
3619 |
12900 |
21652 |
17827 |
|
...date precedes bulletin
|
Date: 2025-06-17:
| 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 |
84956 |
16479 |
181 |
152 |
33 |
5 |
0 |
0 |
| OW |
136 |
4506 |
1206 |
1269 |
94 |
1 |
0 |
0 |
| VODI |
5 |
246 |
336 |
5036 |
1314 |
22 |
3 |
0 |
| ODI |
0 |
12 |
5 |
692 |
4596 |
534 |
23 |
0 |
| CDI |
0 |
0 |
0 |
96 |
3493 |
10228 |
1234 |
38 |
| VCDI |
0 |
0 |
0 |
0 |
2524 |
10329 |
22342 |
22617 |
|
...date precedes bulletin
|
Date: 2025-06-19:
| 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 |
86581 |
15511 |
121 |
145 |
22 |
0 |
0 |
0 |
| OW |
256 |
5038 |
949 |
1028 |
95 |
0 |
0 |
0 |
| VODI |
29 |
831 |
669 |
4361 |
1165 |
79 |
9 |
0 |
| ODI |
2 |
6 |
18 |
1176 |
3982 |
868 |
39 |
1 |
| CDI |
0 |
0 |
0 |
180 |
3904 |
8597 |
2039 |
112 |
| VCDI |
0 |
0 |
0 |
1 |
1791 |
12587 |
25128 |
17423 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
86491 |
16079 |
162 |
184 |
29 |
0 |
0 |
0 |
| OW |
343 |
4471 |
919 |
1070 |
107 |
5 |
0 |
0 |
| VODI |
32 |
822 |
648 |
4209 |
1142 |
71 |
8 |
0 |
| ODI |
2 |
14 |
28 |
1232 |
3837 |
711 |
44 |
1 |
| CDI |
0 |
0 |
0 |
193 |
3970 |
8731 |
2128 |
147 |
| VCDI |
0 |
0 |
0 |
3 |
1874 |
12613 |
25035 |
17388 |
|
Date: 2025-06-21:
| 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 |
87890 |
14710 |
93 |
120 |
54 |
0 |
0 |
0 |
| OW |
563 |
5110 |
748 |
904 |
107 |
5 |
0 |
0 |
| VODI |
28 |
1386 |
807 |
4002 |
877 |
79 |
9 |
0 |
| ODI |
2 |
44 |
68 |
1640 |
4151 |
528 |
34 |
0 |
| CDI |
0 |
0 |
3 |
334 |
4513 |
8215 |
2061 |
118 |
| VCDI |
0 |
0 |
0 |
6 |
3062 |
15799 |
18725 |
17948 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
87826 |
15124 |
133 |
161 |
74 |
0 |
0 |
0 |
| OW |
607 |
4736 |
705 |
967 |
98 |
6 |
0 |
0 |
| VODI |
48 |
1337 |
777 |
3721 |
924 |
86 |
9 |
0 |
| ODI |
2 |
53 |
102 |
1726 |
3763 |
544 |
51 |
0 |
| CDI |
0 |
0 |
2 |
425 |
4762 |
8218 |
1939 |
392 |
| VCDI |
0 |
0 |
0 |
6 |
3143 |
15772 |
18830 |
17674 |
|
Date: 2025-06-23:
| 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 |
89141 |
16603 |
110 |
130 |
25 |
0 |
0 |
0 |
| OW |
198 |
4512 |
1457 |
982 |
35 |
3 |
0 |
0 |
| VODI |
7 |
132 |
149 |
5122 |
887 |
53 |
6 |
0 |
| ODI |
4 |
0 |
0 |
621 |
6440 |
682 |
29 |
1 |
| CDI |
0 |
0 |
0 |
136 |
3115 |
15268 |
621 |
1 |
| VCDI |
0 |
0 |
0 |
1 |
1379 |
11667 |
18713 |
16513 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
88798 |
14796 |
179 |
212 |
38 |
0 |
0 |
0 |
| OW |
516 |
4932 |
700 |
1084 |
73 |
16 |
0 |
0 |
| VODI |
32 |
1463 |
707 |
3286 |
1104 |
97 |
22 |
0 |
| ODI |
4 |
53 |
112 |
1700 |
3730 |
784 |
104 |
1 |
| CDI |
0 |
3 |
18 |
691 |
5183 |
9835 |
1786 |
728 |
| VCDI |
0 |
0 |
0 |
19 |
1753 |
16941 |
17457 |
15786 |
|
Date: 2025-06-25:
| 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 |
90503 |
16172 |
136 |
175 |
20 |
0 |
0 |
0 |
| OW |
186 |
4537 |
1102 |
1163 |
72 |
11 |
0 |
0 |
| VODI |
11 |
425 |
369 |
4142 |
1374 |
113 |
11 |
0 |
| ODI |
4 |
3 |
2 |
975 |
5321 |
1018 |
36 |
0 |
| CDI |
0 |
3 |
1 |
230 |
3429 |
14662 |
2396 |
3 |
| VCDI |
0 |
0 |
0 |
0 |
4671 |
14010 |
20786 |
6671 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
90288 |
14124 |
160 |
245 |
21 |
0 |
0 |
0 |
| OW |
392 |
5205 |
702 |
1034 |
88 |
12 |
0 |
0 |
| VODI |
20 |
1699 |
580 |
3021 |
1278 |
110 |
35 |
0 |
| ODI |
4 |
99 |
136 |
1568 |
3783 |
849 |
149 |
0 |
| CDI |
0 |
13 |
32 |
792 |
4512 |
11680 |
6936 |
625 |
| VCDI |
0 |
0 |
0 |
25 |
5205 |
17163 |
16109 |
6049 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
91632 |
13361 |
138 |
189 |
21 |
1 |
0 |
0 |
| OW |
526 |
5814 |
446 |
847 |
95 |
9 |
0 |
0 |
| VODI |
21 |
2312 |
649 |
2278 |
1203 |
165 |
40 |
0 |
| ODI |
3 |
255 |
220 |
2341 |
3047 |
987 |
149 |
0 |
| CDI |
0 |
77 |
61 |
1482 |
4232 |
12180 |
8168 |
1067 |
| VCDI |
0 |
1 |
0 |
49 |
2110 |
21697 |
11720 |
5150 |
|
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