Validation of sea ice concentration - Full domain
Bulletin date: 2025-03-06
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-02-28:
| 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 |
60598 |
13539 |
122 |
89 |
15 |
5 |
0 |
0 |
| OW |
753 |
1622 |
253 |
290 |
73 |
27 |
0 |
0 |
| VODI |
1861 |
709 |
283 |
639 |
341 |
50 |
1 |
0 |
| ODI |
1740 |
205 |
98 |
395 |
576 |
206 |
12 |
0 |
| CDI |
1 |
116 |
53 |
280 |
912 |
1481 |
325 |
24 |
| VCDI |
0 |
79 |
46 |
251 |
788 |
6149 |
27401 |
58402 |
|
...date precedes bulletin
|
Date: 2025-03-02:
| 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 |
59935 |
14032 |
205 |
206 |
49 |
12 |
0 |
0 |
| OW |
713 |
1382 |
304 |
387 |
142 |
10 |
0 |
0 |
| VODI |
1842 |
597 |
190 |
676 |
447 |
51 |
9 |
0 |
| ODI |
1747 |
231 |
113 |
386 |
524 |
154 |
19 |
0 |
| CDI |
0 |
126 |
64 |
269 |
720 |
1083 |
321 |
1 |
| VCDI |
0 |
111 |
48 |
214 |
731 |
6835 |
24662 |
61262 |
|
...date precedes bulletin
|
Date: 2025-03-04:
| 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 |
60014 |
13949 |
296 |
324 |
74 |
12 |
0 |
0 |
| OW |
691 |
1397 |
307 |
413 |
162 |
29 |
1 |
0 |
| VODI |
1843 |
443 |
226 |
763 |
480 |
44 |
4 |
0 |
| ODI |
1746 |
133 |
59 |
370 |
704 |
234 |
9 |
0 |
| CDI |
0 |
39 |
41 |
192 |
721 |
1390 |
272 |
4 |
| VCDI |
0 |
67 |
31 |
138 |
632 |
6593 |
23686 |
62277 |
|
...date precedes bulletin
|
Date: 2025-03-06:
| 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 |
59625 |
14174 |
249 |
318 |
118 |
39 |
0 |
0 |
| OW |
675 |
1340 |
247 |
399 |
154 |
27 |
5 |
0 |
| VODI |
1835 |
518 |
205 |
556 |
486 |
87 |
18 |
0 |
| ODI |
1758 |
154 |
84 |
296 |
596 |
202 |
27 |
0 |
| CDI |
0 |
47 |
49 |
269 |
722 |
1191 |
367 |
29 |
| VCDI |
0 |
58 |
44 |
196 |
849 |
6049 |
29317 |
57431 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59622 |
14176 |
287 |
349 |
124 |
33 |
0 |
0 |
| OW |
678 |
1339 |
204 |
382 |
157 |
23 |
5 |
0 |
| VODI |
1835 |
515 |
203 |
531 |
484 |
91 |
17 |
0 |
| ODI |
1758 |
142 |
86 |
296 |
579 |
207 |
29 |
0 |
| CDI |
0 |
55 |
48 |
275 |
707 |
1180 |
399 |
10 |
| VCDI |
0 |
64 |
50 |
201 |
874 |
6061 |
29284 |
57450 |
|
Date: 2025-03-08:
| 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 |
57964 |
15403 |
383 |
345 |
105 |
27 |
2 |
0 |
| OW |
724 |
1359 |
237 |
385 |
163 |
27 |
9 |
0 |
| VODI |
1830 |
605 |
244 |
558 |
383 |
128 |
30 |
0 |
| ODI |
1762 |
113 |
87 |
460 |
533 |
230 |
37 |
0 |
| CDI |
0 |
74 |
60 |
323 |
832 |
1092 |
361 |
64 |
| VCDI |
0 |
328 |
44 |
370 |
824 |
4596 |
31573 |
56136 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
57957 |
15413 |
399 |
371 |
130 |
26 |
3 |
0 |
| OW |
731 |
1336 |
213 |
362 |
150 |
24 |
14 |
0 |
| VODI |
1830 |
595 |
243 |
521 |
364 |
132 |
27 |
0 |
| ODI |
1762 |
119 |
94 |
466 |
535 |
229 |
52 |
0 |
| CDI |
0 |
89 |
55 |
354 |
819 |
1064 |
407 |
63 |
| VCDI |
0 |
330 |
51 |
367 |
842 |
4625 |
31509 |
56137 |
|
Date: 2025-03-10:
| 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 |
59047 |
14267 |
365 |
271 |
91 |
17 |
0 |
0 |
| OW |
723 |
1578 |
290 |
435 |
174 |
43 |
3 |
0 |
| VODI |
1849 |
425 |
232 |
733 |
507 |
111 |
17 |
0 |
| ODI |
1737 |
67 |
76 |
371 |
807 |
429 |
57 |
0 |
| CDI |
0 |
19 |
29 |
218 |
755 |
1828 |
942 |
18 |
| VCDI |
0 |
10 |
20 |
98 |
433 |
3552 |
26600 |
61566 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59064 |
13929 |
404 |
341 |
110 |
14 |
0 |
0 |
| OW |
700 |
1321 |
183 |
401 |
221 |
46 |
2 |
0 |
| VODI |
1829 |
537 |
176 |
509 |
396 |
188 |
22 |
0 |
| ODI |
1763 |
278 |
62 |
364 |
677 |
382 |
69 |
0 |
| CDI |
0 |
234 |
98 |
225 |
665 |
1350 |
790 |
17 |
| VCDI |
0 |
67 |
89 |
286 |
698 |
4000 |
26736 |
61567 |
|
Date: 2025-03-12:
| 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 |
58980 |
13965 |
282 |
355 |
113 |
35 |
0 |
0 |
| OW |
726 |
1316 |
226 |
379 |
225 |
46 |
2 |
0 |
| VODI |
1846 |
448 |
175 |
501 |
564 |
165 |
44 |
0 |
| ODI |
1756 |
149 |
60 |
241 |
652 |
432 |
105 |
0 |
| CDI |
0 |
102 |
60 |
205 |
655 |
1846 |
1081 |
68 |
| VCDI |
0 |
28 |
28 |
145 |
407 |
4855 |
29541 |
58001 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
58935 |
13694 |
294 |
369 |
127 |
20 |
0 |
0 |
| OW |
733 |
1117 |
188 |
392 |
231 |
56 |
1 |
0 |
| VODI |
1846 |
502 |
171 |
411 |
509 |
211 |
58 |
0 |
| ODI |
1778 |
243 |
63 |
261 |
639 |
430 |
114 |
0 |
| CDI |
16 |
202 |
33 |
144 |
525 |
1521 |
952 |
86 |
| VCDI |
0 |
250 |
82 |
249 |
585 |
5141 |
29648 |
57983 |
|
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 |
58329 |
14021 |
218 |
339 |
124 |
25 |
0 |
0 |
| OW |
658 |
1501 |
227 |
334 |
210 |
71 |
2 |
0 |
| VODI |
1829 |
434 |
220 |
487 |
563 |
263 |
33 |
0 |
| ODI |
1767 |
118 |
70 |
285 |
601 |
469 |
73 |
0 |
| CDI |
0 |
105 |
21 |
140 |
732 |
2351 |
1375 |
12 |
| VCDI |
0 |
131 |
71 |
218 |
415 |
7518 |
34704 |
49746 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
58262 |
13976 |
276 |
382 |
139 |
11 |
0 |
0 |
| OW |
692 |
1026 |
237 |
408 |
260 |
87 |
4 |
0 |
| VODI |
1829 |
504 |
129 |
410 |
552 |
297 |
50 |
0 |
| ODI |
1799 |
260 |
52 |
184 |
589 |
511 |
120 |
0 |
| CDI |
1 |
269 |
57 |
159 |
563 |
1816 |
1123 |
17 |
| VCDI |
0 |
275 |
76 |
260 |
542 |
7975 |
34890 |
49741 |
|
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