Validation of sea ice concentration - American sector
Reference date: 2025-04-17
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-04-11:
| 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 |
3 |
0 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
28 |
18 |
0 |
0 |
0 |
| CDI |
0 |
0 |
0 |
116 |
285 |
294 |
50 |
1 |
| VCDI |
0 |
0 |
0 |
66 |
170 |
1316 |
10518 |
33001 |
|
|
Date: 2025-04-13:
| 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 |
5 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
23 |
0 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
43 |
67 |
17 |
3 |
0 |
| CDI |
0 |
0 |
0 |
153 |
222 |
588 |
300 |
1 |
| VCDI |
0 |
0 |
0 |
50 |
64 |
890 |
11843 |
31597 |
|
|
Date: 2025-04-15:
| 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 |
1 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
11 |
9 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
18 |
105 |
38 |
2 |
0 |
| CDI |
0 |
0 |
0 |
61 |
282 |
900 |
283 |
4 |
| VCDI |
0 |
0 |
0 |
23 |
230 |
1635 |
10496 |
31768 |
|
|
Date: 2025-04-17:
| 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 |
1 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
82 |
29 |
0 |
0 |
| CDI |
0 |
0 |
0 |
26 |
480 |
895 |
78 |
1 |
| VCDI |
0 |
0 |
0 |
0 |
143 |
1828 |
11348 |
30955 |
|
|
Date: 2025-04-19:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
5 |
3 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
68 |
92 |
3 |
0 |
0 |
| CDI |
0 |
0 |
0 |
59 |
379 |
944 |
138 |
0 |
| VCDI |
0 |
0 |
0 |
7 |
267 |
1594 |
13559 |
28748 |
|
|
Date: 2025-04-21:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
1 |
1 |
2 |
0 |
1 |
0 |
0 |
| ODI |
0 |
1 |
2 |
65 |
131 |
14 |
0 |
0 |
| CDI |
0 |
0 |
0 |
32 |
326 |
1233 |
214 |
38 |
| VCDI |
0 |
0 |
0 |
6 |
97 |
1451 |
13228 |
29023 |
|
|
Date: 2025-04-23:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
3 |
0 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
105 |
173 |
73 |
8 |
0 |
| CDI |
0 |
0 |
0 |
29 |
386 |
1124 |
489 |
37 |
| VCDI |
0 |
0 |
0 |
0 |
96 |
691 |
12168 |
30483 |
|
|
Date: 2025-04-25:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
7 |
2 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
132 |
172 |
46 |
22 |
0 |
| CDI |
0 |
0 |
0 |
18 |
308 |
1118 |
418 |
4 |
| VCDI |
0 |
0 |
0 |
0 |
85 |
904 |
12822 |
29806 |
|
|
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