Validation of sea ice concentration - Asian sector
Bulletin date: 2025-10-16
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-10-10:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-10-12:
| 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 |
10536 |
5397 |
79 |
83 |
0 |
0 |
0 |
0 |
| OW |
118 |
816 |
211 |
325 |
47 |
0 |
0 |
0 |
| VODI |
12 |
190 |
101 |
484 |
243 |
0 |
0 |
0 |
| ODI |
0 |
103 |
24 |
150 |
434 |
67 |
6 |
0 |
| CDI |
0 |
84 |
60 |
199 |
765 |
1099 |
221 |
0 |
| VCDI |
0 |
0 |
0 |
13 |
72 |
5995 |
4990 |
172 |
|
...date precedes bulletin
|
Date: 2025-10-14:
| 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 |
11107 |
4428 |
384 |
213 |
0 |
0 |
0 |
0 |
| OW |
191 |
435 |
820 |
385 |
34 |
0 |
0 |
0 |
| VODI |
1 |
38 |
373 |
258 |
241 |
0 |
0 |
0 |
| ODI |
0 |
2 |
351 |
215 |
214 |
63 |
0 |
0 |
| CDI |
1 |
0 |
1412 |
318 |
338 |
703 |
52 |
0 |
| VCDI |
0 |
0 |
3339 |
1462 |
1097 |
3471 |
1150 |
0 |
|
...date precedes bulletin
|
Date: 2025-10-16:
| 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 |
9304 |
5577 |
246 |
235 |
66 |
0 |
0 |
0 |
| OW |
251 |
731 |
198 |
682 |
99 |
0 |
0 |
0 |
| VODI |
67 |
132 |
40 |
380 |
672 |
12 |
0 |
0 |
| ODI |
1 |
40 |
49 |
48 |
504 |
187 |
0 |
0 |
| CDI |
0 |
5 |
30 |
226 |
277 |
1413 |
351 |
0 |
| VCDI |
1 |
0 |
0 |
11 |
183 |
6648 |
4265 |
165 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9365 |
5756 |
273 |
317 |
87 |
0 |
0 |
0 |
| OW |
196 |
537 |
178 |
654 |
114 |
0 |
0 |
0 |
| VODI |
61 |
142 |
34 |
339 |
679 |
19 |
0 |
0 |
| ODI |
1 |
39 |
47 |
39 |
479 |
240 |
0 |
0 |
| CDI |
1 |
11 |
31 |
229 |
264 |
1460 |
324 |
0 |
| VCDI |
0 |
0 |
0 |
4 |
178 |
6541 |
4292 |
165 |
|
Date: 2025-10-18:
| 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 |
8846 |
5380 |
206 |
207 |
71 |
0 |
0 |
0 |
| OW |
158 |
979 |
236 |
630 |
217 |
8 |
0 |
0 |
| VODI |
4 |
312 |
76 |
397 |
599 |
186 |
0 |
0 |
| ODI |
0 |
34 |
30 |
105 |
308 |
445 |
20 |
0 |
| CDI |
0 |
3 |
26 |
233 |
288 |
1078 |
493 |
0 |
| VCDI |
1 |
0 |
0 |
3 |
137 |
5615 |
4869 |
896 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8893 |
5596 |
272 |
304 |
101 |
2 |
0 |
0 |
| OW |
92 |
698 |
162 |
580 |
251 |
26 |
0 |
0 |
| VODI |
22 |
384 |
76 |
357 |
553 |
203 |
0 |
0 |
| ODI |
1 |
30 |
43 |
96 |
321 |
401 |
55 |
0 |
| CDI |
1 |
0 |
21 |
234 |
257 |
1151 |
553 |
0 |
| VCDI |
0 |
0 |
0 |
4 |
137 |
5549 |
4774 |
896 |
|
Date: 2025-10-20:
| 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 |
8140 |
5079 |
270 |
405 |
5 |
0 |
0 |
0 |
| OW |
27 |
760 |
284 |
863 |
117 |
0 |
0 |
0 |
| VODI |
24 |
56 |
57 |
1000 |
421 |
42 |
0 |
0 |
| ODI |
1 |
0 |
0 |
140 |
610 |
117 |
4 |
0 |
| CDI |
0 |
0 |
0 |
24 |
459 |
1839 |
118 |
0 |
| VCDI |
1 |
0 |
0 |
0 |
0 |
4543 |
5051 |
2639 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8150 |
4776 |
299 |
697 |
191 |
6 |
0 |
0 |
| OW |
13 |
688 |
151 |
680 |
377 |
85 |
0 |
0 |
| VODI |
28 |
402 |
106 |
597 |
471 |
499 |
29 |
0 |
| ODI |
1 |
28 |
53 |
228 |
245 |
427 |
158 |
0 |
| CDI |
0 |
1 |
2 |
189 |
107 |
886 |
789 |
0 |
| VCDI |
1 |
0 |
0 |
41 |
221 |
4638 |
4197 |
2639 |
|
Date: 2025-10-22:
| 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 |
8367 |
3295 |
429 |
674 |
159 |
11 |
0 |
0 |
| OW |
24 |
221 |
189 |
817 |
495 |
127 |
0 |
0 |
| VODI |
17 |
67 |
42 |
866 |
611 |
323 |
0 |
0 |
| ODI |
0 |
11 |
3 |
145 |
611 |
457 |
64 |
0 |
| CDI |
1 |
0 |
0 |
14 |
462 |
1077 |
322 |
0 |
| VCDI |
1 |
0 |
0 |
0 |
19 |
4689 |
4925 |
3561 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8377 |
2844 |
335 |
706 |
421 |
128 |
0 |
0 |
| OW |
12 |
470 |
161 |
512 |
461 |
464 |
5 |
0 |
| VODI |
17 |
261 |
157 |
723 |
450 |
568 |
218 |
0 |
| ODI |
2 |
18 |
9 |
393 |
475 |
357 |
386 |
0 |
| CDI |
1 |
1 |
1 |
139 |
243 |
549 |
658 |
3 |
| VCDI |
1 |
0 |
0 |
43 |
307 |
4618 |
4044 |
3558 |
|
Date: 2025-10-24:
| 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 |
7998 |
2194 |
326 |
683 |
143 |
12 |
0 |
0 |
| OW |
30 |
53 |
92 |
817 |
595 |
196 |
4 |
0 |
| VODI |
17 |
20 |
1 |
517 |
960 |
543 |
91 |
0 |
| ODI |
1 |
0 |
0 |
28 |
869 |
490 |
143 |
0 |
| CDI |
0 |
0 |
0 |
6 |
625 |
1005 |
456 |
0 |
| VCDI |
1 |
0 |
0 |
1 |
66 |
4735 |
5074 |
4304 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8012 |
1993 |
231 |
439 |
303 |
97 |
3 |
0 |
| OW |
12 |
250 |
164 |
604 |
475 |
452 |
96 |
0 |
| VODI |
21 |
24 |
24 |
713 |
688 |
690 |
347 |
0 |
| ODI |
1 |
0 |
0 |
292 |
810 |
507 |
466 |
0 |
| CDI |
0 |
0 |
0 |
4 |
566 |
613 |
560 |
0 |
| VCDI |
1 |
0 |
0 |
0 |
416 |
4622 |
4296 |
4304 |
|
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