Validation of sea ice concentration - Asian sector
Bulletin date: 2025-09-23
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-09-23:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11805 |
5164 |
5 |
15 |
1 |
0 |
0 |
0 |
| OW |
0 |
181 |
5 |
24 |
3 |
0 |
0 |
0 |
| VODI |
0 |
316 |
16 |
231 |
42 |
6 |
5 |
0 |
| ODI |
0 |
369 |
24 |
413 |
276 |
159 |
20 |
0 |
| CDI |
0 |
77 |
8 |
326 |
645 |
623 |
541 |
8 |
| VCDI |
0 |
0 |
0 |
22 |
155 |
1279 |
8202 |
1280 |
|
Date: 2025-09-25:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11490 |
5354 |
12 |
58 |
13 |
2 |
0 |
0 |
| OW |
0 |
175 |
11 |
43 |
16 |
2 |
0 |
0 |
| VODI |
0 |
232 |
13 |
146 |
44 |
8 |
1 |
0 |
| ODI |
0 |
188 |
17 |
265 |
423 |
80 |
14 |
0 |
| CDI |
0 |
47 |
10 |
179 |
502 |
409 |
354 |
0 |
| VCDI |
0 |
8 |
0 |
51 |
360 |
1490 |
8527 |
1702 |
|
Date: 2025-09-27:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11344 |
5405 |
6 |
91 |
47 |
1 |
0 |
0 |
| OW |
0 |
149 |
7 |
41 |
12 |
3 |
1 |
0 |
| VODI |
0 |
180 |
7 |
110 |
77 |
9 |
4 |
0 |
| ODI |
0 |
171 |
2 |
150 |
226 |
116 |
41 |
0 |
| CDI |
0 |
54 |
5 |
113 |
258 |
450 |
508 |
0 |
| VCDI |
0 |
27 |
2 |
57 |
303 |
1729 |
8888 |
1652 |
|
Date: 2025-09-29:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11547 |
5142 |
10 |
86 |
18 |
0 |
0 |
0 |
| OW |
0 |
131 |
2 |
28 |
14 |
0 |
0 |
0 |
| VODI |
0 |
250 |
3 |
48 |
46 |
3 |
1 |
0 |
| ODI |
0 |
277 |
14 |
137 |
124 |
64 |
11 |
0 |
| CDI |
0 |
165 |
12 |
137 |
255 |
338 |
271 |
0 |
| VCDI |
0 |
133 |
8 |
248 |
497 |
2412 |
9633 |
181 |
|
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