Validation of sea ice concentration - Asian sector
Reference date: 2025-09-18
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-09-12:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11369 |
5715 |
267 |
239 |
7 |
0 |
0 |
0 |
| OW |
0 |
366 |
128 |
526 |
172 |
8 |
0 |
0 |
| VODI |
0 |
55 |
72 |
856 |
598 |
74 |
0 |
0 |
| ODI |
0 |
0 |
2 |
238 |
940 |
522 |
0 |
0 |
| CDI |
0 |
0 |
0 |
2 |
937 |
5638 |
242 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
2103 |
1000 |
0 |
|
|
Date: 2025-09-14:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11275 |
5869 |
223 |
232 |
34 |
2 |
0 |
0 |
| OW |
0 |
343 |
141 |
490 |
157 |
8 |
0 |
0 |
| VODI |
0 |
31 |
60 |
822 |
582 |
71 |
1 |
0 |
| ODI |
0 |
0 |
0 |
193 |
903 |
448 |
32 |
0 |
| CDI |
0 |
0 |
0 |
0 |
659 |
5087 |
292 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
3156 |
967 |
0 |
|
|
Date: 2025-09-16:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10926 |
6402 |
228 |
253 |
25 |
1 |
0 |
0 |
| OW |
0 |
310 |
148 |
453 |
152 |
5 |
0 |
0 |
| VODI |
0 |
15 |
32 |
717 |
515 |
57 |
0 |
0 |
| ODI |
0 |
0 |
2 |
121 |
772 |
370 |
54 |
0 |
| CDI |
0 |
0 |
0 |
2 |
516 |
4920 |
766 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
3 |
1472 |
2843 |
0 |
|
|
Date: 2025-09-18:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10631 |
7058 |
212 |
222 |
19 |
0 |
0 |
0 |
| OW |
0 |
218 |
136 |
484 |
90 |
0 |
0 |
0 |
| VODI |
0 |
4 |
26 |
650 |
437 |
43 |
0 |
0 |
| ODI |
0 |
0 |
0 |
172 |
671 |
365 |
29 |
0 |
| CDI |
0 |
0 |
0 |
4 |
288 |
4029 |
680 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
5 |
3035 |
2572 |
0 |
|
|
Date: 2025-09-20:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10189 |
7799 |
207 |
160 |
1 |
0 |
0 |
0 |
| OW |
0 |
185 |
113 |
421 |
54 |
6 |
0 |
0 |
| VODI |
0 |
54 |
71 |
550 |
342 |
86 |
0 |
0 |
| ODI |
0 |
0 |
2 |
105 |
513 |
618 |
38 |
0 |
| CDI |
0 |
0 |
0 |
7 |
217 |
3181 |
1287 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
10 |
2024 |
3840 |
0 |
|
|
Date: 2025-09-22:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9981 |
7727 |
247 |
223 |
13 |
0 |
0 |
0 |
| OW |
0 |
87 |
71 |
369 |
115 |
15 |
0 |
0 |
| VODI |
0 |
11 |
26 |
392 |
513 |
90 |
2 |
0 |
| ODI |
0 |
1 |
2 |
48 |
485 |
462 |
37 |
0 |
| CDI |
0 |
0 |
0 |
1 |
118 |
1404 |
712 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
781 |
7881 |
266 |
|
|
Date: 2025-09-24:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10900 |
6336 |
258 |
351 |
90 |
1 |
0 |
0 |
| OW |
0 |
56 |
45 |
266 |
157 |
16 |
0 |
0 |
| VODI |
0 |
26 |
19 |
155 |
481 |
104 |
3 |
0 |
| ODI |
0 |
1 |
7 |
38 |
421 |
396 |
44 |
0 |
| CDI |
0 |
0 |
0 |
0 |
71 |
898 |
286 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
613 |
7770 |
2271 |
|
|
Date: 2025-09-26:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10627 |
6166 |
206 |
265 |
32 |
0 |
0 |
0 |
| OW |
0 |
47 |
36 |
191 |
327 |
85 |
0 |
0 |
| VODI |
0 |
45 |
34 |
93 |
303 |
288 |
8 |
0 |
| ODI |
0 |
2 |
6 |
57 |
231 |
424 |
69 |
0 |
| CDI |
0 |
0 |
0 |
0 |
191 |
606 |
305 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
11 |
903 |
7870 |
2652 |
|
|
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