Validation of sea ice concentration - American sector
Reference date: 2025-04-24
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-04-18:
| 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 |
5 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
49 |
97 |
10 |
1 |
0 |
| CDI |
0 |
0 |
0 |
50 |
459 |
933 |
92 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
219 |
1674 |
12621 |
29656 |
|
|
Date: 2025-04-20:
| 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 |
8 |
0 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
68 |
93 |
13 |
0 |
0 |
| CDI |
0 |
0 |
0 |
37 |
385 |
913 |
248 |
8 |
| VCDI |
0 |
0 |
0 |
0 |
194 |
1579 |
13903 |
28416 |
|
|
Date: 2025-04-22:
| 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 |
1 |
0 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
77 |
148 |
56 |
0 |
0 |
| CDI |
0 |
0 |
0 |
41 |
344 |
1326 |
322 |
35 |
| VCDI |
0 |
0 |
0 |
3 |
57 |
791 |
12506 |
30158 |
|
|
Date: 2025-04-24:
| 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 |
3 |
1 |
2 |
2 |
1 |
1 |
0 |
| ODI |
0 |
13 |
12 |
109 |
181 |
56 |
22 |
0 |
| CDI |
0 |
0 |
0 |
19 |
264 |
1013 |
605 |
38 |
| VCDI |
0 |
0 |
0 |
0 |
65 |
705 |
13789 |
28965 |
|
|
Date: 2025-04-26:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
13 |
4 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
156 |
148 |
16 |
10 |
0 |
| CDI |
0 |
0 |
0 |
67 |
331 |
954 |
382 |
10 |
| VCDI |
0 |
0 |
0 |
0 |
125 |
801 |
14344 |
28504 |
|
|
Date: 2025-04-28:
| 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 |
6 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
12 |
0 |
0 |
0 |
0 |
| VODI |
0 |
1 |
5 |
45 |
5 |
2 |
0 |
0 |
| ODI |
0 |
4 |
6 |
151 |
143 |
4 |
1 |
0 |
| CDI |
0 |
0 |
0 |
106 |
482 |
924 |
118 |
5 |
| VCDI |
0 |
0 |
0 |
18 |
94 |
1388 |
14169 |
28177 |
|
|
Date: 2025-04-30:
| 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 |
2 |
19 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
18 |
1 |
0 |
0 |
0 |
| VODI |
0 |
4 |
2 |
32 |
10 |
2 |
0 |
0 |
| ODI |
0 |
17 |
6 |
75 |
235 |
43 |
1 |
0 |
| CDI |
0 |
1 |
0 |
82 |
402 |
976 |
160 |
5 |
| VCDI |
0 |
0 |
0 |
5 |
129 |
1739 |
14082 |
27818 |
|
|
Date: 2025-05-02:
| 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 |
14 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
28 |
0 |
0 |
0 |
0 |
| VODI |
0 |
7 |
3 |
35 |
7 |
2 |
0 |
0 |
| ODI |
0 |
16 |
2 |
61 |
93 |
17 |
4 |
0 |
| CDI |
0 |
0 |
0 |
46 |
658 |
900 |
197 |
12 |
| VCDI |
0 |
0 |
0 |
0 |
145 |
1633 |
13676 |
28310 |
|
|
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