Validation of sea ice concentration - Asian 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 |
51 |
373 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
9 |
209 |
12 |
6 |
0 |
0 |
0 |
0 |
| VODI |
0 |
136 |
22 |
29 |
6 |
0 |
0 |
0 |
| ODI |
0 |
68 |
11 |
35 |
34 |
8 |
0 |
0 |
| CDI |
0 |
67 |
21 |
54 |
93 |
127 |
31 |
19 |
| VCDI |
0 |
27 |
25 |
56 |
100 |
405 |
4352 |
25696 |
|
...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 |
40 |
280 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
8 |
145 |
9 |
15 |
0 |
0 |
0 |
0 |
| VODI |
0 |
100 |
20 |
53 |
29 |
3 |
0 |
0 |
| ODI |
0 |
40 |
12 |
36 |
55 |
28 |
3 |
0 |
| CDI |
0 |
45 |
13 |
36 |
69 |
140 |
77 |
1 |
| VCDI |
0 |
2 |
6 |
32 |
73 |
244 |
3613 |
26855 |
|
...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 |
335 |
11 |
3 |
0 |
0 |
0 |
0 |
| OW |
0 |
104 |
1 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
42 |
18 |
24 |
27 |
4 |
0 |
0 |
| ODI |
0 |
16 |
7 |
28 |
37 |
37 |
2 |
0 |
| CDI |
0 |
8 |
1 |
26 |
41 |
251 |
40 |
0 |
| VCDI |
0 |
1 |
3 |
9 |
40 |
412 |
5166 |
25388 |
|
...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 |
25 |
349 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
63 |
5 |
3 |
0 |
0 |
0 |
0 |
| VODI |
0 |
49 |
3 |
8 |
15 |
1 |
0 |
0 |
| ODI |
0 |
27 |
9 |
8 |
65 |
20 |
0 |
0 |
| CDI |
0 |
24 |
11 |
29 |
58 |
198 |
106 |
5 |
| VCDI |
0 |
2 |
3 |
15 |
59 |
277 |
6984 |
23661 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
25 |
345 |
3 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
69 |
2 |
3 |
1 |
0 |
0 |
0 |
| VODI |
0 |
56 |
3 |
8 |
25 |
1 |
0 |
0 |
| ODI |
0 |
25 |
10 |
10 |
57 |
26 |
0 |
0 |
| CDI |
0 |
18 |
12 |
28 |
56 |
200 |
111 |
7 |
| VCDI |
0 |
1 |
1 |
14 |
58 |
269 |
6979 |
23659 |
|
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 |
350 |
9 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
59 |
1 |
5 |
0 |
0 |
0 |
0 |
| VODI |
0 |
50 |
8 |
6 |
7 |
11 |
0 |
0 |
| ODI |
0 |
36 |
6 |
18 |
25 |
49 |
12 |
0 |
| CDI |
0 |
33 |
20 |
36 |
55 |
148 |
181 |
0 |
| VCDI |
0 |
0 |
2 |
22 |
78 |
471 |
13107 |
17277 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
339 |
9 |
3 |
0 |
0 |
0 |
0 |
| OW |
0 |
75 |
1 |
2 |
2 |
0 |
0 |
0 |
| VODI |
0 |
50 |
11 |
8 |
10 |
10 |
0 |
0 |
| ODI |
0 |
37 |
4 |
16 |
20 |
62 |
15 |
0 |
| CDI |
0 |
27 |
19 |
37 |
56 |
138 |
202 |
2 |
| VCDI |
0 |
0 |
2 |
21 |
77 |
469 |
13083 |
17275 |
|
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 |
335 |
8 |
10 |
0 |
0 |
0 |
0 |
| OW |
0 |
116 |
3 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
45 |
18 |
23 |
3 |
1 |
0 |
0 |
| ODI |
0 |
21 |
11 |
18 |
48 |
22 |
7 |
0 |
| CDI |
0 |
5 |
14 |
51 |
106 |
192 |
91 |
3 |
| VCDI |
0 |
3 |
5 |
18 |
81 |
1002 |
12131 |
17691 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
291 |
9 |
10 |
0 |
0 |
0 |
0 |
| OW |
0 |
83 |
4 |
1 |
0 |
0 |
0 |
0 |
| VODI |
0 |
47 |
6 |
14 |
4 |
7 |
2 |
0 |
| ODI |
0 |
39 |
7 |
14 |
35 |
50 |
20 |
0 |
| CDI |
0 |
54 |
16 |
22 |
73 |
132 |
134 |
0 |
| VCDI |
0 |
11 |
17 |
59 |
126 |
1028 |
12073 |
17694 |
|
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 |
311 |
18 |
11 |
0 |
0 |
0 |
0 |
| OW |
0 |
139 |
5 |
2 |
0 |
0 |
0 |
0 |
| VODI |
0 |
61 |
15 |
8 |
2 |
0 |
1 |
0 |
| ODI |
0 |
25 |
14 |
38 |
7 |
22 |
17 |
0 |
| CDI |
0 |
11 |
12 |
44 |
74 |
114 |
148 |
0 |
| VCDI |
0 |
0 |
3 |
22 |
68 |
571 |
11201 |
19118 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
235 |
17 |
10 |
0 |
0 |
0 |
0 |
| OW |
0 |
105 |
3 |
1 |
0 |
0 |
0 |
0 |
| VODI |
0 |
84 |
8 |
13 |
3 |
4 |
1 |
0 |
| ODI |
0 |
51 |
3 |
19 |
15 |
35 |
36 |
0 |
| CDI |
0 |
61 |
21 |
28 |
37 |
82 |
170 |
0 |
| VCDI |
0 |
11 |
15 |
54 |
96 |
586 |
11160 |
19118 |
|
Date: 2025-01-31:
| 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 |
282 |
19 |
13 |
0 |
0 |
0 |
0 |
| OW |
0 |
143 |
9 |
15 |
0 |
0 |
0 |
0 |
| VODI |
0 |
106 |
8 |
14 |
7 |
2 |
0 |
0 |
| ODI |
0 |
45 |
13 |
26 |
19 |
26 |
9 |
0 |
| CDI |
0 |
9 |
26 |
50 |
50 |
56 |
65 |
19 |
| VCDI |
0 |
0 |
1 |
25 |
66 |
442 |
8624 |
21893 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
201 |
14 |
13 |
0 |
0 |
0 |
0 |
| OW |
0 |
119 |
9 |
10 |
0 |
0 |
0 |
0 |
| VODI |
0 |
136 |
3 |
5 |
0 |
0 |
0 |
0 |
| ODI |
0 |
52 |
8 |
19 |
13 |
24 |
8 |
0 |
| CDI |
0 |
60 |
17 |
24 |
36 |
74 |
98 |
1 |
| VCDI |
0 |
17 |
25 |
72 |
93 |
428 |
8592 |
21911 |
|
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