Validation of sea ice concentration - Asian sector
Bulletin date: 2025-01-09
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-01-03:
| 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 |
218 |
627 |
11 |
1 |
0 |
0 |
0 |
0 |
| OW |
8 |
241 |
10 |
10 |
1 |
0 |
0 |
0 |
| VODI |
0 |
119 |
29 |
23 |
13 |
3 |
0 |
0 |
| ODI |
0 |
62 |
15 |
52 |
22 |
23 |
0 |
0 |
| CDI |
0 |
78 |
9 |
49 |
125 |
114 |
7 |
19 |
| VCDI |
0 |
222 |
66 |
185 |
344 |
1224 |
9932 |
18220 |
|
...date precedes bulletin
|
Date: 2025-01-05:
| 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 |
197 |
541 |
7 |
8 |
1 |
0 |
0 |
0 |
| OW |
6 |
166 |
19 |
21 |
14 |
0 |
0 |
0 |
| VODI |
0 |
114 |
19 |
45 |
29 |
7 |
0 |
0 |
| ODI |
0 |
49 |
15 |
32 |
53 |
21 |
0 |
0 |
| CDI |
0 |
60 |
11 |
25 |
75 |
123 |
72 |
2 |
| VCDI |
0 |
152 |
27 |
85 |
195 |
749 |
10061 |
19081 |
|
...date precedes bulletin
|
Date: 2025-01-07:
| 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 |
88 |
589 |
3 |
2 |
0 |
0 |
0 |
0 |
| OW |
0 |
162 |
17 |
16 |
6 |
0 |
0 |
0 |
| VODI |
0 |
91 |
32 |
43 |
23 |
0 |
0 |
0 |
| ODI |
0 |
33 |
17 |
52 |
54 |
5 |
0 |
0 |
| CDI |
0 |
22 |
12 |
39 |
85 |
159 |
19 |
0 |
| VCDI |
0 |
6 |
3 |
32 |
106 |
778 |
9715 |
19873 |
|
...date precedes bulletin
|
Date: 2025-01-09:
| 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 |
511 |
5 |
7 |
2 |
0 |
0 |
0 |
| OW |
0 |
122 |
30 |
35 |
21 |
8 |
0 |
0 |
| VODI |
0 |
68 |
18 |
40 |
32 |
10 |
0 |
0 |
| ODI |
0 |
20 |
6 |
34 |
49 |
40 |
2 |
0 |
| CDI |
0 |
32 |
8 |
31 |
64 |
146 |
59 |
1 |
| VCDI |
0 |
16 |
11 |
22 |
63 |
411 |
6824 |
23291 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
43 |
558 |
19 |
16 |
8 |
2 |
0 |
0 |
| OW |
0 |
97 |
24 |
36 |
26 |
13 |
0 |
0 |
| VODI |
0 |
53 |
15 |
53 |
41 |
27 |
1 |
0 |
| ODI |
0 |
22 |
5 |
26 |
56 |
59 |
3 |
0 |
| CDI |
0 |
26 |
10 |
21 |
58 |
172 |
152 |
5 |
| VCDI |
0 |
13 |
5 |
17 |
42 |
342 |
6729 |
23287 |
|
Date: 2025-01-11:
| 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 |
76 |
419 |
2 |
5 |
0 |
0 |
0 |
0 |
| OW |
7 |
155 |
9 |
20 |
34 |
1 |
0 |
0 |
| VODI |
0 |
102 |
15 |
17 |
19 |
33 |
0 |
0 |
| ODI |
0 |
40 |
18 |
32 |
16 |
40 |
2 |
0 |
| CDI |
0 |
46 |
8 |
41 |
53 |
134 |
9 |
0 |
| VCDI |
0 |
39 |
22 |
48 |
84 |
393 |
5915 |
24228 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
79 |
487 |
5 |
13 |
9 |
0 |
0 |
0 |
| OW |
4 |
129 |
14 |
19 |
34 |
21 |
0 |
0 |
| VODI |
0 |
88 |
18 |
28 |
29 |
44 |
2 |
0 |
| ODI |
0 |
36 |
14 |
35 |
29 |
55 |
2 |
0 |
| CDI |
0 |
38 |
7 |
37 |
48 |
154 |
125 |
0 |
| VCDI |
0 |
23 |
16 |
31 |
57 |
327 |
5797 |
24228 |
|
Date: 2025-01-13:
| 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 |
116 |
445 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
2 |
242 |
9 |
0 |
1 |
0 |
0 |
0 |
| VODI |
0 |
139 |
54 |
49 |
2 |
0 |
0 |
0 |
| ODI |
0 |
36 |
8 |
65 |
32 |
3 |
0 |
0 |
| CDI |
0 |
84 |
18 |
43 |
77 |
91 |
61 |
19 |
| VCDI |
0 |
12 |
26 |
77 |
122 |
473 |
8621 |
21155 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
114 |
510 |
3 |
0 |
0 |
0 |
0 |
0 |
| OW |
4 |
177 |
31 |
20 |
2 |
0 |
0 |
0 |
| VODI |
0 |
122 |
29 |
56 |
11 |
2 |
0 |
0 |
| ODI |
0 |
48 |
19 |
57 |
39 |
11 |
1 |
0 |
| CDI |
0 |
53 |
10 |
40 |
82 |
113 |
91 |
32 |
| VCDI |
0 |
48 |
23 |
61 |
100 |
441 |
8590 |
21142 |
|
Date: 2025-01-15:
| 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 |
470 |
3 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
221 |
12 |
10 |
0 |
0 |
0 |
0 |
| VODI |
0 |
129 |
27 |
26 |
6 |
0 |
0 |
0 |
| ODI |
0 |
61 |
21 |
47 |
27 |
8 |
3 |
0 |
| CDI |
0 |
42 |
24 |
82 |
106 |
142 |
76 |
0 |
| VCDI |
0 |
17 |
11 |
45 |
102 |
331 |
9153 |
20880 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
525 |
4 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
205 |
19 |
18 |
2 |
1 |
0 |
0 |
| VODI |
0 |
122 |
28 |
65 |
16 |
9 |
0 |
0 |
| ODI |
0 |
35 |
21 |
44 |
61 |
29 |
5 |
0 |
| CDI |
0 |
34 |
14 |
35 |
64 |
138 |
130 |
7 |
| VCDI |
0 |
19 |
12 |
48 |
98 |
304 |
9097 |
20873 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
58 |
339 |
1 |
0 |
0 |
0 |
0 |
0 |
| OW |
2 |
140 |
6 |
8 |
0 |
0 |
0 |
0 |
| VODI |
0 |
151 |
36 |
40 |
5 |
0 |
0 |
0 |
| ODI |
0 |
73 |
15 |
35 |
36 |
5 |
3 |
15 |
| CDI |
0 |
77 |
9 |
46 |
109 |
155 |
71 |
91 |
| VCDI |
0 |
100 |
24 |
51 |
83 |
380 |
4309 |
25609 |
|
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