Validation of sea ice concentration - American sector
Reference date: 2025-05-01
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
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 |
8 |
3 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
137 |
173 |
48 |
21 |
0 |
| CDI |
0 |
0 |
0 |
12 |
307 |
1119 |
425 |
4 |
| VCDI |
0 |
0 |
0 |
0 |
84 |
901 |
12816 |
29806 |
|
|
Date: 2025-04-27:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
2 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
2 |
28 |
0 |
0 |
0 |
0 |
| ODI |
0 |
3 |
6 |
106 |
155 |
6 |
1 |
0 |
| CDI |
0 |
2 |
2 |
82 |
408 |
859 |
253 |
8 |
| VCDI |
0 |
0 |
0 |
11 |
133 |
1156 |
14135 |
28507 |
|
|
Date: 2025-04-29:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
2 |
20 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
2 |
13 |
0 |
0 |
0 |
0 |
| VODI |
0 |
5 |
6 |
36 |
9 |
2 |
0 |
0 |
| ODI |
0 |
12 |
5 |
92 |
250 |
35 |
1 |
0 |
| CDI |
0 |
0 |
1 |
90 |
406 |
1069 |
109 |
4 |
| VCDI |
0 |
0 |
0 |
36 |
92 |
1516 |
12987 |
29066 |
|
|
Date: 2025-05-01:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
20 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
19 |
2 |
0 |
0 |
0 |
| VODI |
0 |
7 |
2 |
28 |
12 |
1 |
0 |
0 |
| ODI |
0 |
20 |
8 |
89 |
130 |
43 |
0 |
0 |
| CDI |
0 |
0 |
0 |
72 |
538 |
822 |
107 |
6 |
| VCDI |
0 |
0 |
0 |
2 |
231 |
1990 |
12470 |
29247 |
|
|
Date: 2025-05-03:
| 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 |
19 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
19 |
4 |
0 |
0 |
0 |
| VODI |
0 |
14 |
5 |
31 |
16 |
1 |
1 |
0 |
| ODI |
0 |
8 |
1 |
26 |
127 |
15 |
1 |
0 |
| CDI |
0 |
0 |
0 |
13 |
647 |
1242 |
230 |
32 |
| VCDI |
0 |
0 |
0 |
0 |
108 |
1183 |
12517 |
29606 |
|
|
Date: 2025-05-05:
| 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 |
12 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
1 |
7 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
45 |
51 |
2 |
0 |
0 |
| ODI |
0 |
0 |
0 |
22 |
317 |
34 |
1 |
0 |
| CDI |
0 |
0 |
0 |
1 |
306 |
1648 |
475 |
23 |
| VCDI |
0 |
0 |
0 |
0 |
116 |
887 |
11828 |
30090 |
|
|
Date: 2025-05-07:
| 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 |
1 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
1 |
24 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
48 |
49 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
48 |
297 |
17 |
1 |
0 |
| CDI |
0 |
0 |
0 |
48 |
683 |
1684 |
360 |
13 |
| VCDI |
0 |
0 |
0 |
0 |
46 |
595 |
10090 |
31860 |
|
|
Date: 2025-05-09:
| 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 |
9 |
3 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
8 |
5 |
0 |
0 |
0 |
| VODI |
0 |
1 |
0 |
21 |
91 |
5 |
0 |
0 |
| ODI |
0 |
13 |
1 |
61 |
371 |
27 |
3 |
0 |
| CDI |
0 |
38 |
20 |
153 |
896 |
1790 |
205 |
6 |
| VCDI |
0 |
1 |
0 |
58 |
539 |
1615 |
9755 |
30171 |
|
|
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