Validation of sea ice concentration - Full domain
Bulletin date: 2025-06-05
Data source: OSI SAF N.H. multi-product 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 |
76881 |
14285 |
148 |
176 |
11 |
6 |
0 |
0 |
| OW |
44 |
3644 |
868 |
1202 |
174 |
9 |
3 |
0 |
| VODI |
1 |
690 |
521 |
3637 |
1262 |
96 |
24 |
0 |
| ODI |
0 |
77 |
65 |
1048 |
4500 |
668 |
103 |
0 |
| CDI |
0 |
5 |
7 |
463 |
4589 |
9689 |
4429 |
78 |
| VCDI |
0 |
0 |
0 |
237 |
824 |
9361 |
28378 |
26540 |
|
...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 |
77982 |
13253 |
156 |
92 |
6 |
5 |
4 |
0 |
| OW |
29 |
4267 |
774 |
1308 |
171 |
13 |
17 |
0 |
| VODI |
0 |
1131 |
634 |
3243 |
1268 |
163 |
61 |
0 |
| ODI |
0 |
141 |
95 |
1382 |
3885 |
810 |
197 |
3 |
| CDI |
0 |
12 |
26 |
703 |
4741 |
9502 |
6534 |
63 |
| VCDI |
0 |
0 |
0 |
17 |
998 |
7401 |
25422 |
28234 |
|
...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 |
78599 |
14782 |
187 |
122 |
11 |
13 |
5 |
0 |
| OW |
1 |
3958 |
1205 |
1565 |
97 |
24 |
12 |
0 |
| VODI |
0 |
240 |
336 |
4448 |
1125 |
77 |
29 |
0 |
| ODI |
0 |
9 |
9 |
946 |
5514 |
502 |
83 |
0 |
| CDI |
0 |
0 |
0 |
294 |
3912 |
12469 |
2420 |
11 |
| VCDI |
0 |
0 |
0 |
17 |
712 |
7472 |
29011 |
24526 |
|
...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 |
80292 |
13839 |
132 |
119 |
5 |
2 |
1 |
0 |
| OW |
198 |
4116 |
1053 |
1436 |
114 |
25 |
4 |
0 |
| VODI |
0 |
501 |
495 |
3927 |
1356 |
178 |
11 |
0 |
| ODI |
0 |
15 |
23 |
1174 |
4917 |
797 |
132 |
0 |
| CDI |
0 |
3 |
2 |
326 |
4331 |
12536 |
4180 |
88 |
| VCDI |
0 |
1 |
0 |
26 |
519 |
5156 |
26272 |
26441 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
80257 |
13908 |
138 |
130 |
4 |
2 |
1 |
0 |
| OW |
225 |
4011 |
1031 |
1422 |
115 |
29 |
0 |
0 |
| VODI |
8 |
538 |
509 |
3930 |
1333 |
177 |
12 |
0 |
| ODI |
0 |
12 |
22 |
1154 |
4813 |
808 |
142 |
0 |
| CDI |
0 |
5 |
5 |
336 |
4438 |
12254 |
4279 |
72 |
| VCDI |
0 |
1 |
0 |
36 |
539 |
5424 |
26166 |
26457 |
|
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 |
81078 |
13672 |
116 |
136 |
8 |
1 |
0 |
0 |
| OW |
90 |
4559 |
814 |
1397 |
112 |
20 |
0 |
0 |
| VODI |
0 |
748 |
547 |
3770 |
1427 |
178 |
15 |
0 |
| ODI |
0 |
22 |
42 |
1677 |
4522 |
872 |
203 |
7 |
| CDI |
0 |
9 |
7 |
298 |
4345 |
10985 |
5528 |
77 |
| VCDI |
0 |
5 |
0 |
38 |
241 |
3838 |
24352 |
28987 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
81056 |
13694 |
124 |
163 |
13 |
1 |
0 |
0 |
| OW |
112 |
4463 |
778 |
1424 |
107 |
28 |
0 |
0 |
| VODI |
0 |
811 |
580 |
3723 |
1390 |
182 |
24 |
0 |
| ODI |
0 |
27 |
33 |
1607 |
4417 |
916 |
209 |
5 |
| CDI |
0 |
15 |
8 |
353 |
4508 |
10669 |
5502 |
67 |
| VCDI |
0 |
5 |
3 |
46 |
220 |
4098 |
24363 |
28999 |
|
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 |
82662 |
14520 |
147 |
94 |
17 |
0 |
0 |
0 |
| OW |
55 |
3389 |
1360 |
1211 |
136 |
16 |
0 |
0 |
| VODI |
0 |
118 |
155 |
5441 |
1377 |
69 |
4 |
0 |
| ODI |
0 |
13 |
4 |
680 |
6883 |
598 |
20 |
0 |
| CDI |
0 |
0 |
0 |
73 |
2704 |
12036 |
1532 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
170 |
3050 |
28432 |
27777 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
82456 |
12735 |
123 |
102 |
27 |
2 |
0 |
0 |
| OW |
259 |
4340 |
848 |
1489 |
216 |
16 |
0 |
0 |
| VODI |
2 |
893 |
595 |
3633 |
1765 |
169 |
25 |
0 |
| ODI |
0 |
55 |
85 |
1746 |
4222 |
902 |
228 |
0 |
| CDI |
0 |
17 |
15 |
504 |
4688 |
10778 |
6144 |
226 |
| VCDI |
0 |
0 |
0 |
25 |
369 |
3902 |
23591 |
27551 |
|
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 |
82599 |
15175 |
143 |
205 |
18 |
0 |
1 |
0 |
| OW |
103 |
3522 |
1120 |
1475 |
190 |
10 |
0 |
0 |
| VODI |
12 |
457 |
376 |
4870 |
1770 |
66 |
8 |
0 |
| ODI |
0 |
27 |
8 |
973 |
4967 |
1419 |
57 |
1 |
| CDI |
0 |
5 |
11 |
163 |
2904 |
11008 |
4299 |
90 |
| VCDI |
0 |
0 |
0 |
0 |
630 |
5179 |
23226 |
27656 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
82539 |
13133 |
112 |
271 |
23 |
0 |
1 |
0 |
| OW |
168 |
4587 |
731 |
1485 |
251 |
9 |
0 |
0 |
| VODI |
7 |
1243 |
665 |
3461 |
1860 |
241 |
55 |
0 |
| ODI |
0 |
177 |
112 |
1860 |
3370 |
1217 |
250 |
1 |
| CDI |
0 |
46 |
38 |
561 |
4104 |
11366 |
7003 |
161 |
| VCDI |
0 |
0 |
0 |
48 |
871 |
4849 |
20282 |
27585 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
82305 |
14112 |
195 |
322 |
44 |
3 |
0 |
0 |
| OW |
311 |
4939 |
617 |
1221 |
174 |
14 |
5 |
0 |
| VODI |
7 |
1884 |
700 |
3094 |
1541 |
231 |
81 |
0 |
| ODI |
0 |
353 |
173 |
1975 |
3032 |
1183 |
197 |
1 |
| CDI |
0 |
79 |
79 |
740 |
4225 |
11368 |
7019 |
270 |
| VCDI |
0 |
47 |
15 |
83 |
1613 |
8529 |
18280 |
23682 |
|
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