Validation of sea ice concentration - American sector
Bulletin date: 2025-04-17
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-04-11:
| Best estimate |
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 |
1 |
3 |
0 |
0 |
0 |
| VODI |
0 |
6 |
5 |
16 |
16 |
3 |
5 |
0 |
| ODI |
0 |
11 |
12 |
19 |
24 |
16 |
20 |
1 |
| CDI |
0 |
9 |
36 |
114 |
77 |
118 |
312 |
13 |
| VCDI |
0 |
1 |
29 |
107 |
216 |
1322 |
14027 |
29327 |
|
...date precedes bulletin
|
Date: 2025-04-13:
| Best estimate |
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 |
2 |
1 |
0 |
0 |
0 |
| VODI |
0 |
9 |
2 |
24 |
0 |
2 |
3 |
0 |
| ODI |
0 |
19 |
10 |
10 |
21 |
30 |
20 |
0 |
| CDI |
0 |
17 |
19 |
97 |
116 |
210 |
436 |
1 |
| VCDI |
0 |
24 |
18 |
132 |
190 |
1296 |
16962 |
26195 |
|
...date precedes bulletin
|
Date: 2025-04-15:
| Best estimate |
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 |
1 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
4 |
13 |
0 |
0 |
0 |
| VODI |
0 |
0 |
2 |
15 |
32 |
11 |
4 |
0 |
| ODI |
0 |
10 |
3 |
7 |
60 |
37 |
46 |
0 |
| CDI |
0 |
5 |
16 |
35 |
135 |
255 |
583 |
2 |
| VCDI |
0 |
6 |
15 |
179 |
420 |
1749 |
16198 |
26023 |
|
...date precedes bulletin
|
Date: 2025-04-17:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-04-19:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-04-21:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-04-23:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2025-04-25:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
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