Validation of sea ice concentration - American sector
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 |
16201 |
4837 |
234 |
188 |
13 |
0 |
0 |
0 |
| OW |
594 |
3914 |
458 |
730 |
68 |
3 |
0 |
0 |
| VODI |
4 |
57 |
64 |
713 |
654 |
69 |
0 |
0 |
| ODI |
0 |
13 |
11 |
110 |
1104 |
1684 |
120 |
0 |
| CDI |
0 |
2 |
1 |
4 |
266 |
3549 |
847 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
1773 |
6098 |
1459 |
|
|
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 |
15894 |
5240 |
204 |
181 |
7 |
0 |
0 |
0 |
| OW |
610 |
3576 |
280 |
662 |
305 |
3 |
0 |
0 |
| VODI |
0 |
98 |
73 |
481 |
601 |
119 |
1 |
0 |
| ODI |
0 |
7 |
8 |
130 |
932 |
1031 |
76 |
1 |
| CDI |
0 |
0 |
1 |
10 |
407 |
3762 |
502 |
2 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
2892 |
5890 |
1856 |
|
|
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 |
16348 |
4931 |
146 |
117 |
1 |
0 |
0 |
0 |
| OW |
612 |
3462 |
293 |
596 |
266 |
8 |
0 |
0 |
| VODI |
0 |
100 |
70 |
459 |
611 |
111 |
6 |
0 |
| ODI |
0 |
5 |
6 |
118 |
883 |
638 |
35 |
0 |
| CDI |
0 |
0 |
0 |
8 |
316 |
3148 |
1559 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
1446 |
7688 |
1853 |
|
|
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 |
16150 |
5185 |
122 |
95 |
11 |
0 |
0 |
0 |
| OW |
127 |
3658 |
266 |
610 |
190 |
4 |
0 |
0 |
| VODI |
0 |
73 |
62 |
464 |
590 |
135 |
1 |
0 |
| ODI |
0 |
4 |
5 |
132 |
754 |
629 |
18 |
0 |
| CDI |
0 |
0 |
0 |
9 |
222 |
2448 |
747 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
1551 |
8624 |
2955 |
|
|
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 |
15890 |
5427 |
128 |
94 |
9 |
0 |
0 |
0 |
| OW |
68 |
3310 |
276 |
423 |
244 |
25 |
0 |
0 |
| VODI |
0 |
76 |
64 |
375 |
420 |
215 |
64 |
0 |
| ODI |
0 |
1 |
0 |
77 |
433 |
519 |
151 |
0 |
| CDI |
0 |
0 |
0 |
1 |
142 |
1478 |
905 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
936 |
8983 |
5108 |
|
|
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 |
15323 |
5864 |
158 |
137 |
68 |
3 |
0 |
0 |
| OW |
0 |
2070 |
312 |
869 |
266 |
40 |
0 |
0 |
| VODI |
0 |
43 |
42 |
466 |
384 |
164 |
10 |
0 |
| ODI |
0 |
2 |
2 |
90 |
508 |
350 |
54 |
0 |
| CDI |
0 |
0 |
0 |
1 |
252 |
1349 |
312 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
1173 |
11855 |
3671 |
|
|
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 |
15139 |
5869 |
274 |
308 |
20 |
0 |
0 |
0 |
| OW |
0 |
1353 |
304 |
760 |
232 |
86 |
0 |
0 |
| VODI |
0 |
55 |
44 |
300 |
419 |
56 |
3 |
0 |
| ODI |
0 |
10 |
8 |
182 |
577 |
285 |
11 |
0 |
| CDI |
0 |
0 |
3 |
23 |
434 |
1432 |
106 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
73 |
1972 |
7059 |
8444 |
|
|
Date: 2025-10-03:
| Best estimate |
|
|
...observations not yet available
|
|
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