Validation of sea ice concentration - American sector
Bulletin date: 2025-01-30
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-01-24:
| 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 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
2 |
25 |
31 |
2 |
0 |
| CDI |
0 |
0 |
0 |
3 |
128 |
226 |
130 |
1 |
| VCDI |
0 |
0 |
0 |
21 |
322 |
2406 |
15701 |
26867 |
|
...date precedes bulletin
|
Date: 2025-01-26:
| 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 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
| ODI |
0 |
1 |
1 |
2 |
18 |
7 |
5 |
0 |
| CDI |
0 |
5 |
3 |
2 |
86 |
173 |
77 |
9 |
| VCDI |
0 |
8 |
12 |
38 |
168 |
2230 |
17637 |
25383 |
|
...date precedes bulletin
|
Date: 2025-01-28:
| 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 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
0 |
2 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
0 |
16 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
3 |
138 |
88 |
10 |
| VCDI |
0 |
0 |
0 |
3 |
95 |
2110 |
16820 |
26581 |
|
...date precedes bulletin
|
Date: 2025-01-30:
| 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 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
1 |
4 |
0 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
13 |
12 |
10 |
0 |
0 |
| CDI |
0 |
0 |
1 |
18 |
50 |
79 |
40 |
0 |
| VCDI |
0 |
0 |
0 |
21 |
92 |
1697 |
14380 |
29448 |
|
|
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 |
1 |
3 |
0 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
16 |
13 |
10 |
0 |
0 |
| CDI |
0 |
0 |
1 |
18 |
54 |
92 |
40 |
0 |
| VCDI |
0 |
0 |
0 |
19 |
87 |
1684 |
14380 |
29448 |
|
Date: 2025-02-01:
| 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 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
4 |
4 |
0 |
0 |
| ODI |
0 |
3 |
0 |
3 |
18 |
13 |
0 |
0 |
| CDI |
0 |
1 |
6 |
14 |
51 |
109 |
20 |
0 |
| VCDI |
0 |
0 |
5 |
58 |
273 |
2226 |
13323 |
29735 |
|
|
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 |
4 |
0 |
0 |
| ODI |
0 |
3 |
0 |
5 |
19 |
15 |
0 |
0 |
| CDI |
0 |
1 |
7 |
16 |
52 |
110 |
29 |
0 |
| VCDI |
0 |
0 |
4 |
54 |
270 |
2223 |
13314 |
29735 |
|
Date: 2025-02-03:
| 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 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
2 |
1 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
1 |
41 |
5 |
0 |
0 |
| CDI |
0 |
0 |
1 |
8 |
74 |
221 |
8 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
195 |
2837 |
16686 |
25785 |
|
|
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 |
0 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
1 |
8 |
18 |
0 |
0 |
| CDI |
0 |
0 |
1 |
6 |
42 |
86 |
8 |
0 |
| VCDI |
0 |
0 |
0 |
5 |
261 |
2959 |
16686 |
25785 |
|
Date: 2025-02-05:
| 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 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
14 |
7 |
3 |
0 |
| CDI |
0 |
0 |
0 |
0 |
45 |
119 |
23 |
0 |
| VCDI |
0 |
0 |
0 |
17 |
201 |
2539 |
19788 |
23109 |
|
|
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 |
0 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
1 |
1 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
27 |
73 |
25 |
0 |
| VCDI |
0 |
0 |
0 |
17 |
233 |
2591 |
19789 |
23109 |
|
Date: 2025-02-07:
| 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 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
0 |
2 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
0 |
34 |
11 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
16 |
2316 |
19573 |
23914 |
|
|
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 |
0 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
0 |
4 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
0 |
32 |
2 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
16 |
2316 |
19582 |
23914 |
|
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