Validation of sea ice concentration - American 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 |
15210 |
4902 |
215 |
158 |
14 |
0 |
0 |
0 |
| OW |
102 |
4940 |
503 |
788 |
102 |
6 |
0 |
0 |
| VODI |
0 |
73 |
67 |
1269 |
450 |
19 |
4 |
0 |
| ODI |
0 |
0 |
6 |
882 |
2734 |
465 |
7 |
0 |
| CDI |
0 |
0 |
0 |
9 |
1517 |
5351 |
651 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
2666 |
2732 |
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 |
15219 |
5205 |
186 |
147 |
20 |
0 |
0 |
0 |
| OW |
776 |
4187 |
432 |
755 |
71 |
8 |
0 |
0 |
| VODI |
6 |
80 |
84 |
1218 |
459 |
39 |
0 |
0 |
| ODI |
0 |
0 |
0 |
473 |
2583 |
760 |
12 |
0 |
| CDI |
0 |
0 |
0 |
4 |
876 |
4581 |
645 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
2128 |
4887 |
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 |
16099 |
4610 |
163 |
200 |
29 |
0 |
0 |
0 |
| OW |
828 |
4138 |
406 |
744 |
92 |
13 |
0 |
0 |
| VODI |
11 |
52 |
47 |
1068 |
483 |
86 |
4 |
0 |
| ODI |
0 |
1 |
4 |
293 |
2395 |
834 |
12 |
0 |
| CDI |
0 |
0 |
0 |
1 |
689 |
3632 |
483 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
1781 |
6643 |
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 |
15796 |
4925 |
321 |
287 |
24 |
0 |
0 |
0 |
| OW |
548 |
3718 |
663 |
991 |
117 |
0 |
0 |
0 |
| VODI |
4 |
24 |
44 |
864 |
565 |
64 |
0 |
0 |
| ODI |
0 |
0 |
4 |
371 |
2426 |
627 |
3 |
0 |
| CDI |
0 |
0 |
0 |
11 |
640 |
3499 |
311 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
1494 |
6772 |
728 |
|
|
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 |
16303 |
4880 |
199 |
132 |
2 |
0 |
0 |
0 |
| OW |
570 |
3739 |
370 |
762 |
81 |
0 |
0 |
0 |
| VODI |
4 |
84 |
69 |
646 |
612 |
59 |
0 |
0 |
| ODI |
0 |
15 |
16 |
123 |
1213 |
1360 |
56 |
1 |
| CDI |
0 |
0 |
2 |
10 |
375 |
3498 |
504 |
7 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
2076 |
6455 |
1619 |
|
|
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 |
16000 |
5151 |
234 |
163 |
4 |
0 |
0 |
0 |
| OW |
581 |
3437 |
371 |
638 |
300 |
0 |
0 |
0 |
| VODI |
1 |
56 |
81 |
509 |
624 |
89 |
7 |
0 |
| ODI |
0 |
0 |
8 |
107 |
922 |
731 |
17 |
0 |
| CDI |
0 |
0 |
0 |
5 |
307 |
3782 |
892 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
2287 |
6407 |
2130 |
|
|
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 |
16283 |
5071 |
107 |
109 |
2 |
0 |
0 |
0 |
| OW |
143 |
3821 |
263 |
592 |
201 |
11 |
0 |
0 |
| VODI |
0 |
92 |
82 |
477 |
555 |
117 |
1 |
0 |
| ODI |
0 |
7 |
11 |
171 |
793 |
664 |
26 |
0 |
| CDI |
0 |
0 |
0 |
3 |
310 |
2740 |
1223 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
1581 |
8618 |
1767 |
|
|
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 |
16154 |
5179 |
131 |
78 |
14 |
0 |
0 |
0 |
| OW |
520 |
3180 |
231 |
496 |
195 |
8 |
0 |
0 |
| VODI |
0 |
74 |
58 |
395 |
482 |
276 |
10 |
0 |
| ODI |
0 |
5 |
2 |
82 |
506 |
761 |
34 |
0 |
| CDI |
0 |
0 |
0 |
0 |
148 |
1903 |
974 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
830 |
7787 |
5328 |
|
|
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