Validation of sea ice concentration - American sector
Reference date: 2026-04-16
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2026-04-10:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
1 |
3 |
19 |
0 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
19 |
2 |
3 |
0 |
0 |
| CDI |
0 |
3 |
3 |
63 |
207 |
200 |
39 |
0 |
| VCDI |
0 |
2 |
5 |
54 |
299 |
1638 |
14311 |
28995 |
|
|
Date: 2026-04-12:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
1 |
3 |
1 |
0 |
0 |
| ODI |
0 |
0 |
1 |
6 |
6 |
10 |
1 |
0 |
| CDI |
0 |
0 |
0 |
54 |
188 |
497 |
48 |
0 |
| VCDI |
0 |
0 |
0 |
29 |
95 |
1547 |
18037 |
25342 |
|
|
Date: 2026-04-14:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| CDI |
0 |
0 |
0 |
2 |
135 |
417 |
62 |
0 |
| VCDI |
0 |
0 |
0 |
44 |
304 |
1356 |
13721 |
29824 |
|
|
Date: 2026-04-16:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
133 |
301 |
28 |
1 |
| VCDI |
0 |
0 |
0 |
12 |
258 |
1817 |
12283 |
31032 |
|
|
Date: 2026-04-18:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
0 |
3 |
1 |
0 |
| CDI |
0 |
0 |
0 |
13 |
195 |
724 |
68 |
0 |
| VCDI |
0 |
0 |
7 |
43 |
458 |
1705 |
14464 |
28185 |
|
|
Date: 2026-04-20:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
6 |
7 |
0 |
0 |
| CDI |
0 |
0 |
1 |
20 |
354 |
1002 |
70 |
3 |
| VCDI |
0 |
0 |
0 |
6 |
142 |
1615 |
13610 |
29030 |
|
|
Date: 2026-04-22:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
49 |
14 |
0 |
0 |
| CDI |
0 |
0 |
0 |
12 |
318 |
840 |
257 |
11 |
| VCDI |
0 |
0 |
0 |
2 |
85 |
1153 |
14385 |
28740 |
|
|
Date: 2026-04-24:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
5 |
7 |
1 |
0 |
| CDI |
0 |
3 |
4 |
40 |
477 |
875 |
244 |
6 |
| VCDI |
0 |
5 |
1 |
8 |
126 |
1328 |
16294 |
26442 |
|
|
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