Validation of sea ice concentration - Asian sector
Bulletin date: 2025-09-25
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-09-19:
| 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 |
12690 |
5041 |
52 |
9 |
0 |
0 |
0 |
0 |
| OW |
0 |
798 |
280 |
498 |
45 |
0 |
0 |
0 |
| VODI |
0 |
64 |
75 |
949 |
611 |
18 |
0 |
0 |
| ODI |
0 |
15 |
9 |
126 |
799 |
259 |
0 |
0 |
| CDI |
0 |
2 |
3 |
65 |
434 |
6131 |
319 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
18 |
3640 |
146 |
0 |
|
...date precedes bulletin
|
Date: 2025-09-21:
| 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 |
12939 |
4834 |
23 |
1 |
0 |
0 |
0 |
0 |
| OW |
0 |
800 |
300 |
461 |
28 |
0 |
0 |
0 |
| VODI |
0 |
79 |
89 |
806 |
703 |
34 |
0 |
0 |
| ODI |
0 |
19 |
13 |
124 |
535 |
555 |
5 |
0 |
| CDI |
0 |
0 |
5 |
38 |
252 |
3120 |
591 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
4229 |
2513 |
0 |
|
...date precedes bulletin
|
Date: 2025-09-23:
| 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 |
12384 |
5464 |
100 |
64 |
0 |
0 |
0 |
0 |
| OW |
0 |
212 |
212 |
688 |
24 |
0 |
0 |
0 |
| VODI |
0 |
4 |
8 |
539 |
485 |
17 |
0 |
0 |
| ODI |
0 |
0 |
0 |
48 |
664 |
187 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
302 |
1413 |
113 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
12 |
2020 |
7242 |
894 |
|
...date precedes bulletin
|
Date: 2025-09-25:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-09-27:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-09-29:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-10-01:
| 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 |
11854 |
5755 |
231 |
183 |
0 |
0 |
0 |
0 |
| OW |
0 |
165 |
139 |
579 |
33 |
0 |
0 |
0 |
| VODI |
0 |
0 |
8 |
363 |
317 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
41 |
410 |
46 |
0 |
0 |
| CDI |
0 |
0 |
0 |
4 |
456 |
775 |
15 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
109 |
4201 |
7219 |
193 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11854 |
5129 |
117 |
129 |
0 |
0 |
0 |
0 |
| OW |
0 |
590 |
144 |
424 |
114 |
1 |
0 |
0 |
| VODI |
0 |
170 |
85 |
326 |
386 |
129 |
6 |
0 |
| ODI |
0 |
30 |
23 |
175 |
295 |
304 |
46 |
0 |
| CDI |
0 |
1 |
9 |
99 |
362 |
928 |
265 |
0 |
| VCDI |
0 |
0 |
0 |
17 |
168 |
3660 |
6917 |
193 |
|
Date: 2025-10-03:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
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