Validation of sea ice concentration - Full domain
Reference date: 2025-09-25
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-09-19:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
121511 |
18718 |
570 |
470 |
17 |
0 |
0 |
0 |
| OW |
594 |
4167 |
607 |
1273 |
223 |
5 |
0 |
0 |
| VODI |
4 |
119 |
145 |
1357 |
1217 |
184 |
0 |
0 |
| ODI |
0 |
13 |
15 |
301 |
1928 |
2302 |
149 |
0 |
| CDI |
0 |
2 |
1 |
9 |
728 |
7638 |
2198 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
6 |
7136 |
11581 |
1819 |
|
|
Date: 2025-09-21:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
119270 |
20971 |
545 |
493 |
8 |
0 |
0 |
0 |
| OW |
610 |
3758 |
381 |
1195 |
467 |
8 |
0 |
0 |
| VODI |
0 |
151 |
147 |
1041 |
1165 |
256 |
4 |
0 |
| ODI |
0 |
7 |
13 |
219 |
1694 |
1708 |
159 |
1 |
| CDI |
0 |
0 |
1 |
14 |
664 |
6157 |
2727 |
2 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
4637 |
15940 |
2592 |
|
|
Date: 2025-09-23:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
124485 |
15526 |
438 |
558 |
47 |
0 |
0 |
0 |
| OW |
612 |
3610 |
399 |
946 |
455 |
15 |
0 |
0 |
| VODI |
0 |
160 |
120 |
860 |
1247 |
260 |
11 |
0 |
| ODI |
0 |
11 |
29 |
233 |
1480 |
1152 |
91 |
0 |
| CDI |
0 |
0 |
0 |
24 |
591 |
4898 |
2337 |
12 |
| VCDI |
0 |
0 |
0 |
0 |
6 |
2253 |
18939 |
5202 |
|
|
Date: 2025-09-25:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
124997 |
14651 |
412 |
441 |
49 |
0 |
0 |
0 |
| OW |
127 |
3818 |
343 |
966 |
496 |
25 |
0 |
0 |
| VODI |
0 |
172 |
121 |
716 |
1196 |
268 |
1 |
0 |
| ODI |
0 |
13 |
28 |
227 |
1391 |
1029 |
41 |
0 |
| CDI |
0 |
0 |
0 |
11 |
567 |
3885 |
1321 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
29 |
3225 |
20704 |
5737 |
|
|
Date: 2025-09-27:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
124145 |
15239 |
339 |
343 |
46 |
0 |
0 |
0 |
| OW |
68 |
3552 |
369 |
698 |
515 |
77 |
0 |
0 |
| VODI |
0 |
200 |
157 |
671 |
870 |
488 |
69 |
0 |
| ODI |
0 |
5 |
10 |
161 |
905 |
976 |
309 |
0 |
| CDI |
0 |
0 |
0 |
2 |
423 |
2880 |
1304 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
16 |
3009 |
21482 |
7679 |
|
|
Date: 2025-09-29:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
122703 |
16470 |
381 |
354 |
76 |
5 |
0 |
0 |
| OW |
0 |
2379 |
439 |
1184 |
403 |
38 |
0 |
0 |
| VODI |
0 |
163 |
139 |
852 |
833 |
295 |
11 |
0 |
| ODI |
0 |
2 |
12 |
218 |
1020 |
741 |
127 |
0 |
| CDI |
0 |
0 |
0 |
11 |
567 |
2688 |
686 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
71 |
3859 |
25917 |
4363 |
|
|
Date: 2025-10-01:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
121834 |
17211 |
468 |
495 |
78 |
9 |
0 |
0 |
| OW |
0 |
1633 |
435 |
986 |
323 |
95 |
0 |
0 |
| VODI |
0 |
185 |
169 |
649 |
746 |
166 |
3 |
0 |
| ODI |
0 |
14 |
31 |
342 |
1034 |
643 |
28 |
0 |
| CDI |
0 |
1 |
4 |
63 |
779 |
2638 |
337 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
102 |
4935 |
20851 |
9720 |
|
|
Date: 2025-10-03:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
120673 |
17456 |
680 |
766 |
67 |
0 |
0 |
0 |
| OW |
0 |
1129 |
345 |
997 |
535 |
12 |
0 |
0 |
| VODI |
0 |
178 |
177 |
654 |
807 |
238 |
14 |
0 |
| ODI |
0 |
10 |
24 |
284 |
810 |
744 |
88 |
0 |
| CDI |
0 |
0 |
4 |
38 |
498 |
2768 |
663 |
3 |
| VCDI |
0 |
0 |
0 |
6 |
55 |
5663 |
19421 |
11200 |
|
|
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