Validation of sea ice concentration - Full domain
Reference date: 2025-10-02
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
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 |
124032 |
15405 |
392 |
411 |
52 |
0 |
0 |
0 |
| OW |
520 |
3350 |
312 |
738 |
538 |
98 |
0 |
0 |
| VODI |
0 |
190 |
145 |
649 |
951 |
568 |
18 |
0 |
| ODI |
0 |
12 |
9 |
212 |
952 |
1267 |
103 |
0 |
| CDI |
0 |
0 |
0 |
6 |
526 |
3260 |
1458 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
16 |
2606 |
19967 |
8244 |
|
|
Date: 2025-09-28:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
123630 |
15647 |
378 |
344 |
38 |
0 |
0 |
0 |
| OW |
23 |
2945 |
455 |
1070 |
349 |
16 |
0 |
0 |
| VODI |
0 |
203 |
156 |
717 |
940 |
341 |
15 |
0 |
| ODI |
0 |
3 |
8 |
169 |
1011 |
841 |
208 |
0 |
| CDI |
0 |
0 |
0 |
4 |
536 |
2830 |
954 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
56 |
3153 |
23651 |
6316 |
|
|
Date: 2025-09-30:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
122662 |
16465 |
434 |
395 |
46 |
0 |
0 |
0 |
| OW |
0 |
2037 |
478 |
936 |
439 |
1 |
0 |
0 |
| VODI |
0 |
161 |
192 |
698 |
971 |
167 |
1 |
0 |
| ODI |
0 |
9 |
26 |
303 |
953 |
754 |
35 |
0 |
| CDI |
0 |
0 |
2 |
59 |
727 |
2498 |
376 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
88 |
4787 |
25241 |
5066 |
|
|
Date: 2025-10-02:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
121304 |
17400 |
530 |
720 |
111 |
3 |
0 |
0 |
| OW |
0 |
1333 |
361 |
1044 |
373 |
29 |
0 |
0 |
| VODI |
0 |
149 |
119 |
606 |
757 |
268 |
3 |
0 |
| ODI |
0 |
23 |
27 |
277 |
996 |
600 |
71 |
0 |
| CDI |
0 |
0 |
4 |
40 |
634 |
2753 |
467 |
2 |
| VCDI |
0 |
0 |
0 |
1 |
110 |
4382 |
20812 |
10698 |
|
|
Date: 2025-10-04:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
120442 |
16917 |
585 |
1007 |
175 |
0 |
0 |
0 |
| OW |
0 |
704 |
252 |
1011 |
625 |
62 |
0 |
0 |
| VODI |
0 |
281 |
170 |
783 |
745 |
402 |
10 |
0 |
| ODI |
0 |
10 |
21 |
261 |
846 |
749 |
156 |
0 |
| CDI |
0 |
0 |
0 |
14 |
271 |
2485 |
828 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
51 |
6954 |
26073 |
4116 |
|
|
Date: 2025-10-06:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
119452 |
17247 |
622 |
847 |
72 |
0 |
0 |
0 |
| OW |
0 |
475 |
202 |
983 |
452 |
20 |
0 |
0 |
| VODI |
0 |
179 |
170 |
624 |
973 |
339 |
2 |
0 |
| ODI |
0 |
14 |
17 |
256 |
1055 |
1013 |
43 |
0 |
| CDI |
0 |
0 |
6 |
21 |
416 |
3108 |
946 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
38 |
7503 |
25431 |
4481 |
|
|
Date: 2025-10-08:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
120760 |
16403 |
478 |
560 |
87 |
0 |
0 |
0 |
| OW |
0 |
540 |
211 |
661 |
425 |
27 |
0 |
0 |
| VODI |
0 |
150 |
165 |
586 |
597 |
96 |
0 |
0 |
| ODI |
0 |
19 |
33 |
277 |
1188 |
586 |
19 |
0 |
| CDI |
0 |
0 |
1 |
34 |
870 |
4193 |
1437 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
125 |
8671 |
20780 |
7028 |
|
|
Date: 2025-10-10:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
119676 |
17065 |
475 |
594 |
85 |
1 |
0 |
0 |
| OW |
12 |
432 |
173 |
629 |
407 |
29 |
0 |
0 |
| VODI |
9 |
241 |
173 |
451 |
594 |
136 |
14 |
0 |
| ODI |
0 |
34 |
36 |
346 |
840 |
491 |
83 |
0 |
| CDI |
0 |
0 |
0 |
14 |
818 |
5164 |
2239 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
68 |
9420 |
24231 |
2027 |
|
|
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