Validation of sea ice concentration - American sector
Bulletin date: 2025-04-29
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-04-29:
| Forecast |
|
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 |
0 |
5 |
9 |
7 |
7 |
1 |
| ODI |
0 |
12 |
0 |
50 |
62 |
109 |
156 |
53 |
| CDI |
0 |
17 |
3 |
156 |
272 |
420 |
885 |
569 |
| VCDI |
0 |
1 |
0 |
87 |
435 |
2065 |
13182 |
27030 |
|
Date: 2025-05-01:
| Forecast |
|
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 |
2 |
0 |
15 |
5 |
21 |
24 |
1 |
| ODI |
0 |
32 |
1 |
27 |
103 |
106 |
161 |
77 |
| CDI |
0 |
7 |
1 |
109 |
310 |
388 |
869 |
508 |
| VCDI |
0 |
1 |
0 |
84 |
517 |
2285 |
12596 |
27344 |
|
Date: 2025-05-03:
| Forecast |
|
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 |
2 |
0 |
0 |
2 |
0 |
| OW |
0 |
0 |
0 |
2 |
0 |
2 |
4 |
0 |
| VODI |
0 |
4 |
0 |
9 |
11 |
21 |
45 |
3 |
| ODI |
0 |
28 |
0 |
53 |
114 |
92 |
217 |
110 |
| CDI |
0 |
0 |
0 |
40 |
335 |
384 |
992 |
685 |
| VCDI |
0 |
0 |
0 |
12 |
470 |
1913 |
12308 |
27736 |
|
Date: 2025-05-05:
| Forecast |
|
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 |
4 |
0 |
0 |
2 |
2 |
| OW |
0 |
0 |
0 |
4 |
1 |
2 |
3 |
14 |
| VODI |
0 |
0 |
0 |
26 |
6 |
25 |
51 |
23 |
| ODI |
0 |
0 |
0 |
35 |
95 |
117 |
259 |
133 |
| CDI |
0 |
0 |
0 |
7 |
323 |
481 |
977 |
652 |
| VCDI |
0 |
0 |
0 |
5 |
391 |
1925 |
10972 |
29059 |
|
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