Validation of sea ice concentration - Asian sector
Bulletin date: 2025-07-29
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-07-29:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
4744 |
6116 |
8 |
79 |
15 |
4 |
0 |
0 |
| OW |
94 |
998 |
10 |
80 |
29 |
4 |
0 |
0 |
| VODI |
35 |
1473 |
30 |
253 |
139 |
59 |
0 |
0 |
| ODI |
3 |
1031 |
52 |
630 |
1024 |
878 |
4 |
0 |
| CDI |
0 |
539 |
57 |
750 |
2879 |
4088 |
50 |
0 |
| VCDI |
0 |
22 |
1 |
151 |
1669 |
4227 |
21 |
0 |
|
Date: 2025-07-31:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
5169 |
8551 |
52 |
412 |
93 |
11 |
0 |
0 |
| OW |
0 |
233 |
9 |
123 |
54 |
7 |
0 |
0 |
| VODI |
0 |
340 |
19 |
233 |
187 |
81 |
0 |
0 |
| ODI |
0 |
607 |
31 |
434 |
1046 |
883 |
7 |
0 |
| CDI |
0 |
339 |
24 |
643 |
3017 |
3901 |
95 |
0 |
| VCDI |
0 |
50 |
3 |
139 |
1380 |
3969 |
104 |
0 |
|
Date: 2025-08-02:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6012 |
8205 |
82 |
620 |
179 |
24 |
0 |
0 |
| OW |
0 |
108 |
7 |
82 |
60 |
7 |
0 |
0 |
| VODI |
0 |
195 |
9 |
172 |
191 |
95 |
0 |
0 |
| ODI |
0 |
493 |
22 |
392 |
981 |
1145 |
22 |
0 |
| CDI |
0 |
374 |
27 |
606 |
2322 |
4200 |
82 |
0 |
| VCDI |
0 |
71 |
7 |
171 |
1198 |
3930 |
155 |
0 |
|
Date: 2025-08-04:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6610 |
7966 |
66 |
683 |
265 |
34 |
0 |
0 |
| OW |
0 |
103 |
4 |
70 |
72 |
11 |
0 |
0 |
| VODI |
0 |
192 |
5 |
122 |
163 |
107 |
0 |
0 |
| ODI |
0 |
507 |
15 |
308 |
928 |
1006 |
8 |
0 |
| CDI |
0 |
407 |
26 |
516 |
2543 |
4370 |
60 |
0 |
| VCDI |
0 |
107 |
7 |
172 |
1266 |
3243 |
284 |
0 |
|
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