Validation of sea ice concentration - Full domain
Bulletin date: 2025-03-13
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-03-07:
| 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 |
67054 |
16272 |
378 |
527 |
80 |
3 |
0 |
0 |
| OW |
34 |
1497 |
412 |
803 |
152 |
18 |
0 |
0 |
| VODI |
0 |
393 |
213 |
1165 |
606 |
58 |
2 |
0 |
| ODI |
0 |
79 |
56 |
581 |
829 |
193 |
9 |
0 |
| CDI |
0 |
32 |
10 |
396 |
1201 |
1453 |
283 |
67 |
| VCDI |
0 |
58 |
28 |
230 |
1290 |
8132 |
23598 |
66551 |
|
...date precedes bulletin
|
Date: 2025-03-09:
| 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 |
67046 |
15848 |
449 |
597 |
93 |
0 |
0 |
0 |
| OW |
35 |
1471 |
384 |
846 |
232 |
10 |
0 |
0 |
| VODI |
0 |
501 |
228 |
1103 |
503 |
106 |
0 |
0 |
| ODI |
0 |
154 |
45 |
730 |
934 |
315 |
4 |
0 |
| CDI |
0 |
70 |
73 |
454 |
1273 |
1489 |
259 |
58 |
| VCDI |
0 |
4 |
2 |
177 |
1256 |
6756 |
22026 |
69212 |
|
...date precedes bulletin
|
Date: 2025-03-11:
| 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 |
66849 |
16164 |
504 |
677 |
86 |
1 |
0 |
0 |
| OW |
52 |
1380 |
411 |
903 |
211 |
19 |
0 |
0 |
| VODI |
9 |
323 |
128 |
1114 |
815 |
70 |
0 |
0 |
| ODI |
0 |
74 |
41 |
419 |
1211 |
343 |
18 |
0 |
| CDI |
0 |
44 |
21 |
261 |
1380 |
2372 |
710 |
48 |
| VCDI |
0 |
3 |
12 |
131 |
816 |
5284 |
21444 |
70395 |
|
...date precedes bulletin
|
Date: 2025-03-13:
| 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 |
66136 |
16395 |
523 |
585 |
84 |
0 |
0 |
0 |
| OW |
59 |
1175 |
403 |
986 |
291 |
10 |
0 |
0 |
| VODI |
8 |
282 |
152 |
1009 |
900 |
167 |
0 |
0 |
| ODI |
0 |
91 |
32 |
369 |
1024 |
443 |
39 |
0 |
| CDI |
0 |
60 |
26 |
224 |
1134 |
2485 |
669 |
115 |
| VCDI |
0 |
34 |
13 |
136 |
513 |
8023 |
24695 |
65453 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
66139 |
16371 |
510 |
633 |
104 |
0 |
0 |
0 |
| OW |
51 |
1194 |
397 |
924 |
278 |
13 |
0 |
0 |
| VODI |
13 |
291 |
173 |
998 |
884 |
161 |
0 |
0 |
| ODI |
0 |
91 |
32 |
395 |
1052 |
475 |
43 |
0 |
| CDI |
0 |
54 |
23 |
223 |
1086 |
2509 |
773 |
129 |
| VCDI |
0 |
36 |
14 |
136 |
542 |
7970 |
24587 |
65439 |
|
Date: 2025-03-15:
| 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 |
64825 |
16993 |
361 |
610 |
96 |
0 |
0 |
0 |
| OW |
14 |
1335 |
286 |
991 |
390 |
4 |
0 |
0 |
| VODI |
0 |
277 |
212 |
886 |
931 |
212 |
0 |
0 |
| ODI |
0 |
67 |
28 |
481 |
826 |
524 |
12 |
6 |
| CDI |
0 |
53 |
20 |
209 |
1290 |
2555 |
1146 |
53 |
| VCDI |
0 |
51 |
46 |
276 |
901 |
8608 |
31330 |
57838 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
64825 |
16965 |
353 |
662 |
97 |
0 |
0 |
0 |
| OW |
14 |
1334 |
302 |
936 |
420 |
9 |
0 |
0 |
| VODI |
0 |
309 |
203 |
900 |
903 |
183 |
0 |
0 |
| ODI |
0 |
76 |
34 |
490 |
891 |
548 |
13 |
2 |
| CDI |
0 |
43 |
20 |
193 |
1251 |
2639 |
1183 |
67 |
| VCDI |
0 |
49 |
41 |
272 |
872 |
8524 |
31292 |
57828 |
|
Date: 2025-03-17:
| 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 |
65056 |
17270 |
374 |
466 |
70 |
0 |
0 |
0 |
| OW |
10 |
1130 |
468 |
988 |
274 |
12 |
0 |
0 |
| VODI |
0 |
92 |
82 |
1146 |
901 |
59 |
0 |
0 |
| ODI |
0 |
20 |
10 |
268 |
1383 |
400 |
2 |
1 |
| CDI |
0 |
1 |
3 |
111 |
1532 |
3669 |
300 |
52 |
| VCDI |
0 |
0 |
0 |
19 |
485 |
10648 |
35093 |
52348 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
65043 |
16647 |
323 |
514 |
87 |
0 |
0 |
0 |
| OW |
23 |
1429 |
379 |
859 |
306 |
23 |
0 |
0 |
| VODI |
0 |
313 |
188 |
921 |
799 |
115 |
0 |
0 |
| ODI |
0 |
76 |
21 |
417 |
1036 |
418 |
12 |
1 |
| CDI |
0 |
39 |
22 |
177 |
1596 |
2989 |
928 |
35 |
| VCDI |
0 |
9 |
4 |
110 |
821 |
11243 |
34455 |
52365 |
|
Date: 2025-03-19:
| 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 |
64852 |
17083 |
421 |
409 |
51 |
0 |
0 |
0 |
| OW |
1 |
891 |
406 |
1130 |
296 |
0 |
0 |
0 |
| VODI |
0 |
141 |
123 |
943 |
911 |
113 |
0 |
0 |
| ODI |
0 |
34 |
20 |
352 |
1203 |
619 |
5 |
1 |
| CDI |
0 |
6 |
13 |
147 |
1424 |
4042 |
958 |
22 |
| VCDI |
0 |
1 |
5 |
128 |
722 |
10000 |
35015 |
52255 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
64849 |
16480 |
367 |
427 |
65 |
0 |
0 |
0 |
| OW |
4 |
1256 |
379 |
987 |
305 |
7 |
0 |
0 |
| VODI |
0 |
287 |
164 |
930 |
938 |
187 |
0 |
0 |
| ODI |
0 |
75 |
41 |
417 |
1012 |
607 |
4 |
0 |
| CDI |
0 |
31 |
16 |
170 |
1465 |
3436 |
1177 |
18 |
| VCDI |
0 |
27 |
21 |
178 |
822 |
10537 |
34797 |
52260 |
|
Date: 2025-03-21:
| 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 |
64496 |
16892 |
323 |
453 |
67 |
0 |
0 |
0 |
| OW |
0 |
1003 |
367 |
1040 |
288 |
8 |
0 |
0 |
| VODI |
0 |
273 |
125 |
917 |
973 |
75 |
0 |
0 |
| ODI |
0 |
36 |
47 |
429 |
1183 |
475 |
12 |
3 |
| CDI |
0 |
7 |
11 |
239 |
1694 |
3192 |
1672 |
32 |
| VCDI |
0 |
0 |
0 |
154 |
813 |
8718 |
33080 |
55646 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
64493 |
16510 |
379 |
689 |
93 |
0 |
0 |
0 |
| OW |
3 |
1142 |
263 |
855 |
449 |
14 |
0 |
0 |
| VODI |
0 |
414 |
135 |
726 |
928 |
138 |
0 |
0 |
| ODI |
0 |
89 |
67 |
416 |
950 |
541 |
10 |
7 |
| CDI |
0 |
30 |
18 |
317 |
1594 |
2698 |
1525 |
87 |
| VCDI |
0 |
26 |
11 |
229 |
1004 |
9077 |
33229 |
55587 |
|
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