Validation of sea ice concentration - American sector
Bulletin date: 2025-01-23
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-01-17:
| 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 |
168 |
5 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
197 |
46 |
32 |
7 |
0 |
0 |
0 |
| VODI |
0 |
80 |
51 |
132 |
104 |
10 |
2 |
0 |
| ODI |
0 |
3 |
10 |
67 |
143 |
69 |
13 |
0 |
| CDI |
0 |
0 |
0 |
12 |
124 |
356 |
141 |
12 |
| VCDI |
0 |
0 |
0 |
8 |
213 |
1197 |
13068 |
29596 |
|
...date precedes bulletin
|
Date: 2025-01-19:
| 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 |
48 |
6 |
7 |
5 |
0 |
0 |
0 |
| OW |
0 |
127 |
32 |
25 |
7 |
0 |
0 |
0 |
| VODI |
0 |
56 |
24 |
135 |
94 |
11 |
6 |
0 |
| ODI |
0 |
34 |
15 |
86 |
172 |
50 |
7 |
0 |
| CDI |
0 |
1 |
5 |
37 |
158 |
229 |
125 |
0 |
| VCDI |
0 |
0 |
2 |
46 |
269 |
2482 |
14630 |
26935 |
|
...date precedes bulletin
|
Date: 2025-01-21:
| 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 |
5 |
10 |
1 |
0 |
0 |
| VODI |
0 |
44 |
13 |
79 |
59 |
0 |
0 |
0 |
| ODI |
0 |
30 |
32 |
90 |
171 |
42 |
2 |
0 |
| CDI |
0 |
1 |
1 |
39 |
198 |
320 |
166 |
1 |
| VCDI |
0 |
0 |
1 |
21 |
171 |
2808 |
19175 |
22386 |
|
...date precedes bulletin
|
Date: 2025-01-23:
| 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 |
2 |
0 |
5 |
29 |
21 |
1 |
0 |
| CDI |
0 |
2 |
2 |
27 |
160 |
217 |
109 |
0 |
| VCDI |
0 |
4 |
4 |
19 |
308 |
2507 |
17341 |
25107 |
|
|
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 |
2 |
0 |
10 |
28 |
25 |
5 |
0 |
| CDI |
0 |
2 |
2 |
29 |
172 |
257 |
128 |
0 |
| VCDI |
0 |
4 |
4 |
12 |
298 |
2463 |
17318 |
25107 |
|
Date: 2025-01-25:
| 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 |
3 |
0 |
0 |
| ODI |
0 |
0 |
0 |
1 |
17 |
21 |
4 |
0 |
| CDI |
0 |
5 |
1 |
1 |
93 |
214 |
86 |
0 |
| VCDI |
0 |
7 |
14 |
32 |
239 |
2818 |
18284 |
24026 |
|
|
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 |
2 |
2 |
0 |
0 |
| ODI |
0 |
1 |
0 |
1 |
29 |
26 |
4 |
0 |
| CDI |
0 |
5 |
1 |
1 |
93 |
232 |
113 |
0 |
| VCDI |
0 |
6 |
14 |
32 |
225 |
2796 |
18257 |
24026 |
|
Date: 2025-01-27:
| 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 |
1 |
0 |
1 |
0 |
| CDI |
0 |
0 |
0 |
3 |
48 |
104 |
124 |
0 |
| VCDI |
0 |
0 |
0 |
29 |
122 |
2179 |
16571 |
26684 |
|
|
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 |
0 |
3 |
0 |
| CDI |
0 |
0 |
0 |
8 |
44 |
97 |
70 |
0 |
| VCDI |
0 |
0 |
0 |
24 |
126 |
2186 |
16623 |
26684 |
|
Date: 2025-01-29:
| 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 |
5 |
1 |
0 |
| CDI |
0 |
0 |
0 |
0 |
21 |
106 |
87 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
66 |
1571 |
14952 |
29042 |
|
|
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 |
9 |
1 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
18 |
24 |
51 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
75 |
1657 |
14989 |
29042 |
|
Date: 2025-01-31:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
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