Validation of sea ice concentration - Asian sector
Bulletin date: 2025-01-16
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-01-10:
| 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 |
468 |
4 |
6 |
0 |
0 |
0 |
0 |
| OW |
0 |
143 |
14 |
27 |
26 |
0 |
0 |
0 |
| VODI |
0 |
89 |
18 |
19 |
34 |
11 |
0 |
0 |
| ODI |
0 |
38 |
17 |
40 |
34 |
40 |
4 |
0 |
| CDI |
0 |
39 |
24 |
59 |
74 |
186 |
18 |
0 |
| VCDI |
0 |
9 |
8 |
23 |
42 |
481 |
6742 |
23302 |
|
...date precedes bulletin
|
Date: 2025-01-12:
| 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 |
110 |
408 |
3 |
0 |
0 |
0 |
0 |
0 |
| OW |
12 |
170 |
14 |
35 |
0 |
0 |
0 |
0 |
| VODI |
0 |
98 |
17 |
27 |
35 |
0 |
0 |
0 |
| ODI |
0 |
56 |
16 |
28 |
36 |
15 |
0 |
0 |
| CDI |
0 |
55 |
13 |
38 |
56 |
80 |
20 |
0 |
| VCDI |
0 |
96 |
31 |
73 |
99 |
465 |
7119 |
22857 |
|
...date precedes bulletin
|
Date: 2025-01-14:
| 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 |
71 |
452 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
235 |
6 |
1 |
0 |
0 |
0 |
0 |
| VODI |
0 |
155 |
28 |
26 |
3 |
0 |
0 |
0 |
| ODI |
0 |
60 |
15 |
55 |
29 |
7 |
0 |
0 |
| CDI |
0 |
64 |
29 |
51 |
98 |
137 |
80 |
3 |
| VCDI |
0 |
18 |
23 |
66 |
105 |
570 |
9951 |
19744 |
|
...date precedes bulletin
|
Date: 2025-01-16:
| 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 |
47 |
402 |
1 |
0 |
0 |
0 |
0 |
0 |
| OW |
3 |
232 |
9 |
3 |
0 |
0 |
0 |
0 |
| VODI |
0 |
138 |
25 |
22 |
1 |
0 |
0 |
0 |
| ODI |
0 |
77 |
18 |
31 |
21 |
6 |
0 |
0 |
| CDI |
0 |
69 |
37 |
72 |
118 |
104 |
28 |
25 |
| VCDI |
0 |
32 |
21 |
59 |
109 |
400 |
7377 |
22595 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
50 |
495 |
6 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
182 |
13 |
9 |
0 |
0 |
0 |
0 |
| VODI |
0 |
146 |
25 |
28 |
3 |
0 |
0 |
0 |
| ODI |
0 |
55 |
22 |
37 |
25 |
9 |
0 |
2 |
| CDI |
0 |
45 |
30 |
65 |
116 |
123 |
27 |
42 |
| VCDI |
0 |
27 |
15 |
48 |
105 |
378 |
7378 |
22576 |
|
Date: 2025-01-18:
| 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 |
52 |
324 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
5 |
179 |
15 |
5 |
2 |
0 |
0 |
0 |
| VODI |
0 |
111 |
29 |
47 |
20 |
2 |
0 |
0 |
| ODI |
0 |
57 |
24 |
25 |
35 |
15 |
2 |
0 |
| CDI |
0 |
45 |
25 |
54 |
65 |
156 |
53 |
30 |
| VCDI |
0 |
9 |
10 |
50 |
79 |
372 |
3718 |
26467 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
56 |
406 |
0 |
2 |
0 |
0 |
0 |
0 |
| OW |
1 |
156 |
24 |
11 |
7 |
0 |
0 |
0 |
| VODI |
0 |
84 |
40 |
51 |
27 |
8 |
0 |
0 |
| ODI |
0 |
42 |
16 |
34 |
29 |
28 |
6 |
0 |
| CDI |
0 |
25 |
14 |
42 |
65 |
135 |
61 |
54 |
| VCDI |
0 |
12 |
9 |
41 |
73 |
374 |
3706 |
26443 |
|
Date: 2025-01-20:
| 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 |
35 |
317 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
8 |
133 |
1 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
75 |
16 |
39 |
24 |
0 |
0 |
0 |
| ODI |
0 |
14 |
5 |
49 |
66 |
23 |
0 |
0 |
| CDI |
0 |
1 |
4 |
24 |
104 |
196 |
64 |
2 |
| VCDI |
0 |
0 |
1 |
7 |
68 |
262 |
4474 |
26070 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
41 |
303 |
0 |
0 |
1 |
0 |
0 |
0 |
| OW |
2 |
99 |
5 |
5 |
14 |
2 |
0 |
0 |
| VODI |
0 |
60 |
6 |
56 |
50 |
6 |
0 |
0 |
| ODI |
0 |
33 |
3 |
17 |
71 |
42 |
0 |
0 |
| CDI |
0 |
32 |
11 |
21 |
46 |
137 |
39 |
22 |
| VCDI |
0 |
13 |
2 |
20 |
80 |
294 |
4499 |
26050 |
|
Date: 2025-01-22:
| 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 |
343 |
12 |
3 |
0 |
0 |
0 |
0 |
| OW |
0 |
75 |
4 |
4 |
0 |
0 |
0 |
0 |
| VODI |
0 |
41 |
6 |
12 |
16 |
4 |
0 |
0 |
| ODI |
0 |
20 |
10 |
6 |
48 |
30 |
0 |
0 |
| CDI |
0 |
11 |
8 |
23 |
32 |
240 |
67 |
5 |
| VCDI |
0 |
1 |
2 |
12 |
43 |
347 |
6042 |
24615 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
288 |
12 |
3 |
0 |
0 |
0 |
0 |
| OW |
0 |
79 |
8 |
0 |
0 |
1 |
0 |
0 |
| VODI |
0 |
54 |
5 |
14 |
13 |
15 |
0 |
0 |
| ODI |
0 |
38 |
2 |
10 |
47 |
27 |
0 |
1 |
| CDI |
0 |
30 |
12 |
18 |
40 |
170 |
43 |
38 |
| VCDI |
0 |
2 |
3 |
15 |
39 |
408 |
6066 |
24581 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
299 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
89 |
5 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
55 |
7 |
14 |
11 |
14 |
1 |
0 |
| ODI |
0 |
36 |
2 |
11 |
29 |
26 |
2 |
0 |
| CDI |
0 |
55 |
3 |
16 |
38 |
104 |
122 |
21 |
| VCDI |
0 |
18 |
14 |
35 |
69 |
299 |
8190 |
22497 |
|
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