Validation of sea ice concentration - Full domain
Bulletin date: 2025-05-29
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-05-23:
| 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 |
72864 |
15077 |
215 |
248 |
21 |
4 |
0 |
1 |
| OW |
49 |
3294 |
906 |
1659 |
154 |
23 |
2 |
10 |
| VODI |
0 |
407 |
409 |
4095 |
1444 |
115 |
27 |
53 |
| ODI |
0 |
29 |
32 |
1044 |
4486 |
701 |
125 |
68 |
| CDI |
0 |
0 |
1 |
438 |
3542 |
9680 |
3000 |
417 |
| VCDI |
0 |
0 |
0 |
48 |
460 |
5914 |
28826 |
34855 |
|
...date precedes bulletin
|
Date: 2025-05-25:
| 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 |
74955 |
13546 |
158 |
162 |
23 |
3 |
0 |
0 |
| OW |
70 |
3394 |
799 |
1571 |
170 |
29 |
14 |
1 |
| VODI |
0 |
653 |
471 |
3694 |
1620 |
177 |
51 |
51 |
| ODI |
0 |
44 |
76 |
1104 |
4639 |
872 |
205 |
87 |
| CDI |
0 |
7 |
10 |
458 |
3544 |
9797 |
3215 |
190 |
| VCDI |
0 |
0 |
0 |
50 |
571 |
7970 |
31670 |
28622 |
|
...date precedes bulletin
|
Date: 2025-05-27:
| 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 |
75711 |
14957 |
159 |
171 |
19 |
6 |
0 |
0 |
| OW |
0 |
2967 |
1028 |
1488 |
171 |
25 |
1 |
0 |
| VODI |
0 |
152 |
298 |
4048 |
1431 |
91 |
17 |
2 |
| ODI |
0 |
18 |
5 |
823 |
5284 |
509 |
65 |
4 |
| CDI |
0 |
17 |
3 |
201 |
3507 |
11081 |
1959 |
87 |
| VCDI |
0 |
5 |
0 |
18 |
553 |
7699 |
34066 |
26097 |
|
...date precedes bulletin
|
Date: 2025-05-29:
| 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 |
76343 |
14756 |
177 |
164 |
13 |
5 |
1 |
0 |
| OW |
4 |
3331 |
946 |
1303 |
225 |
9 |
0 |
0 |
| VODI |
1 |
479 |
447 |
3760 |
1242 |
121 |
19 |
0 |
| ODI |
0 |
28 |
33 |
1000 |
4715 |
534 |
90 |
0 |
| CDI |
0 |
10 |
5 |
369 |
4684 |
9924 |
3679 |
167 |
| VCDI |
0 |
3 |
0 |
141 |
1267 |
7242 |
30434 |
27072 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
76338 |
14893 |
214 |
210 |
19 |
6 |
1 |
0 |
| OW |
9 |
3229 |
882 |
1284 |
218 |
7 |
0 |
0 |
| VODI |
1 |
442 |
480 |
3763 |
1320 |
115 |
22 |
0 |
| ODI |
0 |
30 |
27 |
980 |
4608 |
573 |
93 |
0 |
| CDI |
0 |
10 |
5 |
345 |
4668 |
9542 |
3922 |
200 |
| VCDI |
0 |
3 |
0 |
155 |
1313 |
7592 |
30185 |
27039 |
|
Date: 2025-05-31:
| 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 |
77282 |
14039 |
153 |
99 |
7 |
3 |
0 |
0 |
| OW |
42 |
4039 |
819 |
1221 |
144 |
10 |
6 |
0 |
| VODI |
0 |
944 |
605 |
3377 |
1280 |
116 |
38 |
0 |
| ODI |
0 |
115 |
88 |
1215 |
4132 |
614 |
175 |
0 |
| CDI |
0 |
12 |
9 |
543 |
4456 |
9507 |
5795 |
89 |
| VCDI |
0 |
0 |
0 |
121 |
904 |
7673 |
26636 |
28435 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
77268 |
14213 |
184 |
149 |
6 |
6 |
0 |
0 |
| OW |
56 |
3897 |
760 |
1194 |
185 |
10 |
5 |
0 |
| VODI |
0 |
892 |
650 |
3379 |
1366 |
119 |
44 |
0 |
| ODI |
0 |
125 |
65 |
1203 |
3952 |
684 |
169 |
0 |
| CDI |
0 |
22 |
15 |
516 |
4459 |
9073 |
5664 |
90 |
| VCDI |
0 |
0 |
0 |
135 |
955 |
8031 |
26768 |
28434 |
|
Date: 2025-06-02:
| 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 |
78413 |
13428 |
225 |
226 |
14 |
9 |
19 |
0 |
| OW |
35 |
3959 |
748 |
1533 |
219 |
30 |
29 |
0 |
| VODI |
10 |
1113 |
564 |
3061 |
1350 |
127 |
79 |
0 |
| ODI |
0 |
171 |
87 |
1437 |
3765 |
801 |
227 |
14 |
| CDI |
0 |
50 |
53 |
758 |
4954 |
9880 |
6119 |
90 |
| VCDI |
0 |
0 |
0 |
17 |
1232 |
7158 |
25430 |
27309 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
78386 |
13000 |
181 |
156 |
7 |
5 |
5 |
0 |
| OW |
57 |
4316 |
738 |
1438 |
203 |
25 |
25 |
0 |
| VODI |
15 |
1208 |
609 |
3266 |
1395 |
149 |
67 |
0 |
| ODI |
0 |
172 |
104 |
1406 |
3879 |
981 |
255 |
16 |
| CDI |
0 |
25 |
45 |
748 |
4841 |
8978 |
6136 |
100 |
| VCDI |
0 |
0 |
0 |
18 |
1209 |
7867 |
25415 |
27297 |
|
Date: 2025-06-04:
| 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 |
78181 |
15448 |
290 |
242 |
11 |
7 |
0 |
0 |
| OW |
1 |
3686 |
1177 |
1717 |
158 |
27 |
4 |
0 |
| VODI |
0 |
333 |
393 |
4195 |
1278 |
147 |
14 |
0 |
| ODI |
0 |
6 |
11 |
1018 |
5166 |
651 |
108 |
0 |
| CDI |
0 |
4 |
6 |
282 |
3936 |
12554 |
3690 |
34 |
| VCDI |
0 |
0 |
1 |
27 |
553 |
6738 |
28832 |
23817 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
78173 |
13478 |
264 |
257 |
14 |
8 |
0 |
0 |
| OW |
9 |
4505 |
810 |
1617 |
251 |
52 |
7 |
0 |
| VODI |
0 |
1322 |
612 |
2949 |
1471 |
213 |
60 |
0 |
| ODI |
0 |
149 |
162 |
1696 |
3600 |
928 |
367 |
5 |
| CDI |
0 |
21 |
26 |
895 |
4878 |
10153 |
7049 |
180 |
| VCDI |
0 |
2 |
4 |
67 |
888 |
8770 |
25165 |
23666 |
|
Date: 2025-06-06:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
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