Validation of sea ice concentration - Full domain
Bulletin date: 2025-03-20
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-03-14:
| 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 |
65354 |
16723 |
435 |
637 |
111 |
0 |
0 |
0 |
| OW |
22 |
1270 |
335 |
968 |
361 |
14 |
0 |
0 |
| VODI |
0 |
257 |
182 |
907 |
933 |
216 |
0 |
0 |
| ODI |
0 |
74 |
23 |
430 |
917 |
496 |
37 |
3 |
| CDI |
0 |
60 |
17 |
165 |
1312 |
2779 |
1096 |
64 |
| VCDI |
0 |
48 |
42 |
252 |
580 |
8553 |
25494 |
63576 |
|
...date precedes bulletin
|
Date: 2025-03-16:
| 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 |
65048 |
16724 |
397 |
442 |
100 |
2 |
0 |
0 |
| OW |
24 |
1362 |
358 |
988 |
362 |
24 |
0 |
0 |
| VODI |
0 |
288 |
223 |
924 |
776 |
183 |
0 |
0 |
| ODI |
0 |
45 |
36 |
490 |
765 |
454 |
15 |
0 |
| CDI |
0 |
40 |
13 |
229 |
1255 |
2389 |
972 |
27 |
| VCDI |
0 |
5 |
25 |
197 |
1005 |
10601 |
34315 |
53640 |
|
...date precedes bulletin
|
Date: 2025-03-18:
| 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 |
65397 |
16780 |
373 |
414 |
80 |
0 |
0 |
0 |
| OW |
11 |
985 |
449 |
1027 |
316 |
9 |
0 |
0 |
| VODI |
0 |
141 |
112 |
1022 |
906 |
76 |
0 |
0 |
| ODI |
0 |
28 |
17 |
325 |
1325 |
495 |
2 |
0 |
| CDI |
0 |
8 |
16 |
121 |
1557 |
3755 |
586 |
36 |
| VCDI |
0 |
1 |
4 |
93 |
576 |
10937 |
34627 |
52136 |
|
...date precedes bulletin
|
Date: 2025-03-20:
| 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 |
64622 |
17002 |
388 |
409 |
57 |
0 |
0 |
0 |
| OW |
0 |
910 |
365 |
1161 |
280 |
3 |
0 |
0 |
| VODI |
0 |
214 |
112 |
975 |
920 |
89 |
0 |
0 |
| ODI |
0 |
44 |
26 |
349 |
1246 |
528 |
3 |
4 |
| CDI |
0 |
6 |
17 |
172 |
1430 |
3852 |
1202 |
24 |
| VCDI |
0 |
0 |
2 |
151 |
630 |
9819 |
35215 |
52516 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
64622 |
17013 |
417 |
452 |
59 |
0 |
0 |
0 |
| OW |
0 |
916 |
329 |
1143 |
282 |
4 |
0 |
0 |
| VODI |
0 |
198 |
126 |
955 |
913 |
101 |
0 |
0 |
| ODI |
0 |
43 |
21 |
343 |
1263 |
506 |
7 |
4 |
| CDI |
0 |
6 |
15 |
190 |
1466 |
3968 |
1166 |
31 |
| VCDI |
0 |
0 |
2 |
134 |
580 |
9712 |
35247 |
52509 |
|
Date: 2025-03-22:
| 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 |
64819 |
16574 |
338 |
402 |
23 |
0 |
0 |
0 |
| OW |
0 |
1102 |
435 |
946 |
262 |
11 |
0 |
0 |
| VODI |
0 |
321 |
120 |
928 |
882 |
117 |
0 |
0 |
| ODI |
0 |
87 |
88 |
373 |
1017 |
541 |
59 |
4 |
| CDI |
0 |
90 |
60 |
379 |
1384 |
2681 |
1812 |
210 |
| VCDI |
0 |
68 |
18 |
194 |
618 |
8010 |
32489 |
57281 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
64819 |
16585 |
383 |
460 |
29 |
0 |
0 |
0 |
| OW |
0 |
1111 |
375 |
950 |
263 |
12 |
0 |
0 |
| VODI |
0 |
309 |
149 |
880 |
917 |
114 |
1 |
0 |
| ODI |
0 |
85 |
78 |
387 |
1026 |
524 |
67 |
4 |
| CDI |
0 |
82 |
51 |
342 |
1355 |
2792 |
1914 |
113 |
| VCDI |
0 |
70 |
23 |
203 |
596 |
7918 |
32378 |
57378 |
|
Date: 2025-03-24:
| 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 |
65566 |
16732 |
320 |
424 |
26 |
0 |
0 |
0 |
| OW |
0 |
1116 |
588 |
809 |
207 |
1 |
0 |
0 |
| VODI |
0 |
140 |
108 |
1301 |
771 |
33 |
0 |
0 |
| ODI |
0 |
15 |
8 |
299 |
1571 |
353 |
3 |
2 |
| CDI |
0 |
8 |
7 |
139 |
1144 |
3353 |
329 |
62 |
| VCDI |
0 |
4 |
0 |
68 |
352 |
7232 |
26358 |
65294 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
65566 |
16351 |
345 |
392 |
33 |
0 |
0 |
0 |
| OW |
0 |
1155 |
388 |
856 |
228 |
9 |
0 |
0 |
| VODI |
0 |
341 |
217 |
883 |
714 |
83 |
0 |
0 |
| ODI |
0 |
105 |
38 |
451 |
950 |
359 |
13 |
3 |
| CDI |
0 |
48 |
30 |
260 |
1611 |
2733 |
992 |
89 |
| VCDI |
0 |
15 |
13 |
198 |
535 |
7788 |
25685 |
65266 |
|
Date: 2025-03-26:
| 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 |
65240 |
17087 |
417 |
392 |
34 |
0 |
0 |
0 |
| OW |
0 |
1193 |
418 |
821 |
198 |
6 |
0 |
0 |
| VODI |
0 |
289 |
191 |
1051 |
600 |
73 |
0 |
0 |
| ODI |
0 |
40 |
32 |
457 |
1215 |
430 |
0 |
0 |
| CDI |
0 |
35 |
16 |
207 |
1335 |
2967 |
330 |
57 |
| VCDI |
0 |
7 |
8 |
165 |
649 |
7465 |
23828 |
67490 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
65240 |
16752 |
429 |
483 |
38 |
0 |
0 |
0 |
| OW |
0 |
1145 |
299 |
766 |
257 |
7 |
0 |
0 |
| VODI |
0 |
493 |
208 |
783 |
632 |
144 |
0 |
0 |
| ODI |
0 |
134 |
69 |
412 |
901 |
425 |
1 |
0 |
| CDI |
0 |
84 |
47 |
362 |
1491 |
3327 |
566 |
89 |
| VCDI |
0 |
43 |
30 |
287 |
712 |
7038 |
23591 |
67458 |
|
Date: 2025-03-28:
| 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 |
66120 |
16158 |
346 |
393 |
35 |
0 |
0 |
0 |
| OW |
8 |
1300 |
393 |
855 |
242 |
20 |
0 |
0 |
| VODI |
12 |
320 |
130 |
1110 |
569 |
85 |
4 |
0 |
| ODI |
1 |
110 |
21 |
484 |
1170 |
412 |
12 |
9 |
| CDI |
0 |
74 |
47 |
174 |
1304 |
3325 |
534 |
107 |
| VCDI |
0 |
22 |
31 |
173 |
736 |
7119 |
26246 |
64532 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
66122 |
15766 |
367 |
512 |
52 |
0 |
0 |
0 |
| OW |
19 |
1179 |
247 |
789 |
280 |
30 |
0 |
0 |
| VODI |
0 |
568 |
172 |
746 |
598 |
180 |
5 |
0 |
| ODI |
0 |
181 |
87 |
505 |
846 |
482 |
15 |
30 |
| CDI |
0 |
209 |
48 |
468 |
1545 |
3378 |
986 |
152 |
| VCDI |
0 |
81 |
47 |
169 |
735 |
6891 |
25790 |
64466 |
|
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