Validation of sea ice concentration - Asian sector
Bulletin date: 2025-01-09
Data source: OSI SAF N.H. multi-product 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 |
189 |
757 |
34 |
7 |
0 |
0 |
0 |
0 |
| OW |
7 |
206 |
43 |
44 |
0 |
0 |
0 |
0 |
| VODI |
0 |
82 |
22 |
89 |
13 |
0 |
0 |
0 |
| ODI |
0 |
47 |
6 |
79 |
37 |
17 |
0 |
0 |
| CDI |
0 |
58 |
12 |
69 |
172 |
100 |
3 |
7 |
| VCDI |
0 |
96 |
53 |
242 |
526 |
1522 |
6839 |
21718 |
|
...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 |
176 |
614 |
17 |
64 |
0 |
0 |
0 |
0 |
| OW |
7 |
137 |
35 |
54 |
13 |
0 |
0 |
0 |
| VODI |
0 |
80 |
29 |
78 |
50 |
0 |
0 |
0 |
| ODI |
0 |
32 |
13 |
47 |
81 |
8 |
0 |
0 |
| CDI |
0 |
52 |
6 |
41 |
110 |
153 |
16 |
13 |
| VCDI |
0 |
60 |
37 |
147 |
276 |
910 |
6982 |
22758 |
|
...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 |
643 |
21 |
36 |
0 |
0 |
0 |
0 |
| OW |
2 |
102 |
60 |
58 |
0 |
0 |
0 |
0 |
| VODI |
0 |
41 |
16 |
132 |
19 |
0 |
0 |
0 |
| ODI |
0 |
24 |
10 |
72 |
77 |
1 |
0 |
0 |
| CDI |
0 |
6 |
11 |
68 |
117 |
145 |
5 |
13 |
| VCDI |
0 |
0 |
0 |
21 |
195 |
838 |
4186 |
26089 |
|
...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 |
56 |
539 |
50 |
21 |
0 |
0 |
0 |
0 |
| OW |
0 |
59 |
16 |
125 |
34 |
2 |
0 |
0 |
| VODI |
0 |
30 |
9 |
81 |
57 |
8 |
0 |
0 |
| ODI |
0 |
9 |
10 |
28 |
80 |
36 |
0 |
0 |
| CDI |
0 |
10 |
9 |
65 |
101 |
170 |
20 |
4 |
| VCDI |
0 |
1 |
4 |
33 |
65 |
463 |
5693 |
25208 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
56 |
565 |
57 |
73 |
8 |
0 |
0 |
0 |
| OW |
0 |
38 |
14 |
108 |
43 |
10 |
0 |
0 |
| VODI |
0 |
23 |
13 |
66 |
81 |
28 |
0 |
0 |
| ODI |
0 |
12 |
6 |
27 |
83 |
51 |
3 |
0 |
| CDI |
0 |
9 |
4 |
55 |
72 |
205 |
116 |
6 |
| VCDI |
0 |
1 |
4 |
24 |
50 |
385 |
5594 |
25206 |
|
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 |
471 |
18 |
19 |
0 |
0 |
0 |
0 |
| OW |
5 |
124 |
32 |
48 |
42 |
0 |
0 |
0 |
| VODI |
0 |
46 |
14 |
88 |
39 |
17 |
0 |
0 |
| ODI |
0 |
18 |
4 |
66 |
33 |
41 |
0 |
0 |
| CDI |
0 |
17 |
11 |
60 |
103 |
132 |
1 |
0 |
| VCDI |
0 |
7 |
7 |
48 |
153 |
563 |
4146 |
26647 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
77 |
523 |
30 |
49 |
10 |
0 |
0 |
0 |
| OW |
4 |
87 |
28 |
68 |
49 |
11 |
0 |
0 |
| VODI |
0 |
38 |
8 |
87 |
52 |
42 |
0 |
0 |
| ODI |
0 |
17 |
8 |
53 |
49 |
55 |
0 |
0 |
| CDI |
0 |
14 |
6 |
43 |
100 |
184 |
87 |
5 |
| VCDI |
0 |
4 |
6 |
29 |
110 |
461 |
4060 |
26642 |
|
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 |
121 |
488 |
23 |
4 |
0 |
0 |
0 |
0 |
| OW |
4 |
198 |
48 |
27 |
3 |
0 |
0 |
0 |
| VODI |
0 |
54 |
31 |
174 |
6 |
0 |
0 |
0 |
| ODI |
0 |
17 |
5 |
95 |
50 |
1 |
0 |
0 |
| CDI |
0 |
31 |
27 |
71 |
143 |
114 |
32 |
8 |
| VCDI |
0 |
0 |
5 |
71 |
205 |
616 |
7699 |
22725 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
120 |
518 |
52 |
20 |
1 |
0 |
0 |
0 |
| OW |
5 |
122 |
30 |
104 |
3 |
0 |
0 |
0 |
| VODI |
0 |
63 |
19 |
123 |
34 |
0 |
0 |
0 |
| ODI |
0 |
33 |
7 |
70 |
77 |
8 |
0 |
0 |
| CDI |
0 |
30 |
14 |
50 |
133 |
123 |
89 |
23 |
| VCDI |
0 |
22 |
17 |
75 |
159 |
600 |
7642 |
22710 |
|
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 |
42 |
485 |
11 |
3 |
0 |
0 |
0 |
0 |
| OW |
1 |
218 |
20 |
27 |
0 |
0 |
0 |
0 |
| VODI |
0 |
88 |
15 |
99 |
12 |
0 |
0 |
0 |
| ODI |
0 |
41 |
7 |
71 |
60 |
5 |
0 |
0 |
| CDI |
0 |
16 |
17 |
103 |
158 |
124 |
74 |
1 |
| VCDI |
0 |
2 |
6 |
43 |
174 |
579 |
7240 |
23354 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
43 |
530 |
23 |
15 |
0 |
0 |
0 |
0 |
| OW |
0 |
200 |
11 |
54 |
6 |
0 |
0 |
0 |
| VODI |
0 |
71 |
21 |
121 |
45 |
8 |
0 |
0 |
| ODI |
0 |
31 |
2 |
61 |
71 |
45 |
1 |
0 |
| CDI |
0 |
17 |
12 |
43 |
119 |
130 |
118 |
13 |
| VCDI |
0 |
1 |
7 |
52 |
163 |
525 |
7195 |
23342 |
|
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 |
46 |
429 |
11 |
4 |
0 |
0 |
0 |
0 |
| OW |
6 |
202 |
32 |
20 |
0 |
0 |
0 |
0 |
| VODI |
0 |
109 |
16 |
87 |
3 |
0 |
0 |
0 |
| ODI |
0 |
44 |
14 |
78 |
35 |
0 |
0 |
0 |
| CDI |
0 |
22 |
23 |
111 |
153 |
116 |
4 |
15 |
| VCDI |
0 |
0 |
11 |
77 |
193 |
594 |
4744 |
25897 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
47 |
397 |
20 |
25 |
0 |
0 |
0 |
0 |
| OW |
5 |
137 |
9 |
27 |
0 |
0 |
0 |
0 |
| VODI |
0 |
124 |
28 |
100 |
0 |
0 |
0 |
0 |
| ODI |
0 |
46 |
9 |
80 |
42 |
2 |
1 |
11 |
| CDI |
0 |
54 |
14 |
60 |
182 |
135 |
51 |
69 |
| VCDI |
0 |
48 |
27 |
85 |
160 |
573 |
4696 |
25832 |
|
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