Validation of sea ice concentration - Asian 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 |
367 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
69 |
4 |
4 |
0 |
0 |
0 |
0 |
| VODI |
0 |
50 |
6 |
8 |
12 |
5 |
0 |
0 |
| ODI |
0 |
31 |
6 |
19 |
40 |
41 |
2 |
0 |
| CDI |
0 |
35 |
14 |
31 |
47 |
174 |
175 |
0 |
| VCDI |
0 |
0 |
1 |
14 |
48 |
223 |
8138 |
22518 |
|
...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 |
321 |
12 |
2 |
0 |
0 |
0 |
0 |
| OW |
0 |
60 |
4 |
1 |
0 |
0 |
0 |
0 |
| VODI |
0 |
46 |
11 |
10 |
2 |
10 |
0 |
0 |
| ODI |
0 |
36 |
8 |
21 |
23 |
52 |
4 |
0 |
| CDI |
0 |
47 |
28 |
44 |
68 |
165 |
131 |
0 |
| VCDI |
0 |
1 |
2 |
38 |
157 |
984 |
12689 |
17105 |
|
...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 |
321 |
14 |
13 |
1 |
0 |
0 |
0 |
| OW |
0 |
135 |
2 |
3 |
0 |
0 |
0 |
0 |
| VODI |
0 |
61 |
11 |
12 |
1 |
0 |
0 |
0 |
| ODI |
0 |
22 |
14 |
31 |
25 |
32 |
3 |
0 |
| CDI |
0 |
11 |
12 |
38 |
90 |
135 |
85 |
0 |
| VCDI |
0 |
0 |
5 |
23 |
91 |
789 |
10756 |
19346 |
|
...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 |
304 |
15 |
6 |
0 |
0 |
0 |
0 |
| OW |
0 |
139 |
6 |
4 |
0 |
0 |
0 |
0 |
| VODI |
0 |
76 |
23 |
8 |
0 |
0 |
0 |
0 |
| ODI |
0 |
21 |
27 |
39 |
18 |
29 |
15 |
0 |
| CDI |
0 |
1 |
5 |
65 |
72 |
83 |
110 |
19 |
| VCDI |
0 |
0 |
0 |
6 |
43 |
403 |
9014 |
21531 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
312 |
15 |
7 |
0 |
0 |
0 |
0 |
| OW |
0 |
134 |
6 |
3 |
0 |
0 |
0 |
0 |
| VODI |
0 |
73 |
24 |
7 |
1 |
0 |
0 |
0 |
| ODI |
0 |
21 |
26 |
41 |
17 |
29 |
27 |
0 |
| CDI |
0 |
1 |
5 |
62 |
70 |
85 |
114 |
22 |
| VCDI |
0 |
0 |
0 |
8 |
45 |
401 |
8998 |
21528 |
|
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 |
281 |
16 |
17 |
0 |
0 |
0 |
0 |
| OW |
0 |
144 |
6 |
18 |
1 |
0 |
0 |
0 |
| VODI |
0 |
112 |
13 |
5 |
1 |
5 |
0 |
0 |
| ODI |
0 |
50 |
9 |
22 |
11 |
28 |
7 |
0 |
| CDI |
0 |
38 |
12 |
39 |
49 |
74 |
75 |
14 |
| VCDI |
0 |
6 |
11 |
41 |
80 |
525 |
8214 |
22158 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
287 |
16 |
17 |
0 |
0 |
0 |
0 |
| OW |
0 |
133 |
7 |
19 |
1 |
0 |
0 |
0 |
| VODI |
0 |
106 |
13 |
5 |
2 |
8 |
0 |
0 |
| ODI |
0 |
56 |
8 |
20 |
8 |
26 |
17 |
0 |
| CDI |
0 |
42 |
12 |
40 |
55 |
80 |
78 |
17 |
| VCDI |
0 |
7 |
11 |
41 |
76 |
518 |
8201 |
22155 |
|
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 |
396 |
1 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
213 |
1 |
1 |
0 |
0 |
0 |
0 |
| VODI |
0 |
93 |
5 |
5 |
1 |
1 |
0 |
0 |
| ODI |
0 |
61 |
14 |
28 |
24 |
2 |
0 |
0 |
| CDI |
0 |
23 |
19 |
52 |
69 |
116 |
39 |
10 |
| VCDI |
0 |
2 |
3 |
47 |
117 |
1225 |
13536 |
15978 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
367 |
1 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
103 |
1 |
1 |
0 |
0 |
0 |
0 |
| VODI |
0 |
119 |
0 |
0 |
1 |
0 |
0 |
0 |
| ODI |
0 |
85 |
9 |
10 |
10 |
13 |
20 |
0 |
| CDI |
0 |
99 |
17 |
50 |
56 |
86 |
118 |
0 |
| VCDI |
0 |
15 |
15 |
72 |
144 |
1245 |
13437 |
15988 |
|
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 |
58 |
348 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
186 |
4 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
109 |
2 |
4 |
1 |
0 |
0 |
0 |
| ODI |
0 |
66 |
12 |
21 |
3 |
15 |
1 |
0 |
| CDI |
0 |
38 |
27 |
61 |
89 |
91 |
74 |
0 |
| VCDI |
0 |
0 |
4 |
49 |
111 |
899 |
9310 |
20499 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
58 |
315 |
1 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
116 |
3 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
117 |
1 |
0 |
1 |
1 |
0 |
0 |
| ODI |
0 |
92 |
3 |
10 |
2 |
16 |
31 |
0 |
| CDI |
0 |
89 |
21 |
48 |
61 |
74 |
112 |
11 |
| VCDI |
0 |
18 |
20 |
77 |
140 |
914 |
9242 |
20488 |
|
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 |
43 |
415 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
184 |
1 |
1 |
0 |
0 |
0 |
0 |
| VODI |
0 |
137 |
3 |
15 |
4 |
0 |
0 |
0 |
| ODI |
0 |
93 |
11 |
19 |
38 |
5 |
0 |
0 |
| CDI |
0 |
95 |
41 |
107 |
76 |
120 |
33 |
0 |
| VCDI |
0 |
28 |
16 |
145 |
266 |
1395 |
11028 |
17763 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
43 |
389 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
144 |
2 |
5 |
1 |
0 |
0 |
0 |
| VODI |
0 |
114 |
9 |
23 |
16 |
3 |
0 |
0 |
| ODI |
0 |
110 |
10 |
27 |
40 |
36 |
7 |
0 |
| CDI |
0 |
131 |
27 |
76 |
78 |
134 |
82 |
28 |
| VCDI |
0 |
64 |
24 |
156 |
249 |
1347 |
10972 |
17735 |
|
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