Validation of sea ice concentration - American sector
Bulletin date: 2025-04-22
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-04-22:
| 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 |
2 |
1 |
0 |
0 |
| OW |
0 |
0 |
0 |
1 |
2 |
1 |
0 |
0 |
| VODI |
0 |
0 |
0 |
3 |
34 |
59 |
11 |
0 |
| ODI |
0 |
0 |
0 |
17 |
79 |
141 |
159 |
65 |
| CDI |
0 |
0 |
0 |
86 |
201 |
536 |
823 |
589 |
| VCDI |
0 |
0 |
0 |
26 |
227 |
1434 |
12413 |
28684 |
|
Date: 2025-04-24:
| 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 |
1 |
20 |
15 |
0 |
0 |
| OW |
0 |
0 |
0 |
6 |
5 |
8 |
2 |
0 |
| VODI |
0 |
2 |
0 |
12 |
21 |
46 |
41 |
1 |
| ODI |
0 |
7 |
0 |
23 |
49 |
119 |
205 |
50 |
| CDI |
0 |
20 |
0 |
71 |
156 |
377 |
886 |
608 |
| VCDI |
0 |
0 |
0 |
30 |
247 |
1246 |
13345 |
27975 |
|
Date: 2025-04-26:
| 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 |
22 |
12 |
6 |
0 |
| OW |
0 |
0 |
0 |
2 |
7 |
7 |
3 |
0 |
| VODI |
0 |
0 |
0 |
12 |
20 |
22 |
32 |
0 |
| ODI |
0 |
0 |
0 |
34 |
56 |
120 |
168 |
29 |
| CDI |
0 |
0 |
0 |
104 |
161 |
353 |
1060 |
524 |
| VCDI |
0 |
0 |
0 |
96 |
345 |
1264 |
13412 |
27721 |
|
Date: 2025-04-28:
| 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 |
15 |
25 |
8 |
1 |
0 |
| OW |
0 |
0 |
0 |
6 |
7 |
1 |
0 |
0 |
| VODI |
0 |
0 |
0 |
12 |
39 |
14 |
28 |
1 |
| ODI |
0 |
13 |
0 |
46 |
92 |
116 |
204 |
42 |
| CDI |
0 |
2 |
0 |
117 |
170 |
322 |
780 |
709 |
| VCDI |
0 |
0 |
0 |
160 |
389 |
1818 |
13344 |
27113 |
|
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