Validation of sea ice concentration - Asian sector
Bulletin date: 2025-02-13
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
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 |
481 |
9 |
7 |
0 |
0 |
0 |
0 |
| OW |
0 |
175 |
13 |
25 |
0 |
0 |
0 |
0 |
| VODI |
0 |
108 |
17 |
37 |
21 |
4 |
0 |
0 |
| ODI |
0 |
49 |
13 |
60 |
58 |
29 |
0 |
0 |
| CDI |
0 |
14 |
25 |
124 |
182 |
147 |
28 |
6 |
| VCDI |
0 |
0 |
1 |
73 |
426 |
1379 |
8731 |
20811 |
|
...date precedes bulletin
|
Date: 2025-02-09:
| 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 |
13 |
428 |
6 |
25 |
0 |
0 |
0 |
0 |
| OW |
0 |
139 |
14 |
27 |
9 |
0 |
0 |
0 |
| VODI |
0 |
140 |
41 |
87 |
25 |
0 |
0 |
0 |
| ODI |
0 |
67 |
42 |
141 |
60 |
7 |
1 |
0 |
| CDI |
0 |
20 |
30 |
178 |
374 |
134 |
88 |
8 |
| VCDI |
0 |
17 |
7 |
87 |
618 |
1600 |
8284 |
20379 |
|
...date precedes bulletin
|
Date: 2025-02-11:
| 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 |
0 |
400 |
8 |
5 |
0 |
0 |
0 |
0 |
| OW |
0 |
185 |
41 |
36 |
4 |
0 |
0 |
0 |
| VODI |
0 |
90 |
39 |
162 |
17 |
1 |
0 |
0 |
| ODI |
0 |
22 |
12 |
152 |
140 |
5 |
0 |
0 |
| CDI |
0 |
10 |
9 |
104 |
453 |
105 |
72 |
10 |
| VCDI |
0 |
1 |
4 |
30 |
458 |
1128 |
7899 |
21494 |
|
...date precedes bulletin
|
Date: 2025-02-13:
| 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 |
110 |
267 |
5 |
2 |
0 |
0 |
0 |
0 |
| OW |
20 |
74 |
19 |
30 |
8 |
0 |
0 |
0 |
| VODI |
18 |
53 |
21 |
26 |
63 |
0 |
0 |
0 |
| ODI |
1 |
26 |
21 |
80 |
109 |
6 |
0 |
3 |
| CDI |
0 |
9 |
10 |
62 |
289 |
356 |
60 |
35 |
| VCDI |
0 |
0 |
0 |
0 |
133 |
1189 |
7088 |
22903 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
110 |
278 |
18 |
4 |
0 |
0 |
0 |
0 |
| OW |
23 |
75 |
8 |
28 |
9 |
0 |
0 |
0 |
| VODI |
15 |
51 |
21 |
29 |
63 |
0 |
0 |
0 |
| ODI |
1 |
18 |
21 |
78 |
114 |
8 |
0 |
3 |
| CDI |
0 |
7 |
8 |
60 |
282 |
375 |
63 |
35 |
| VCDI |
0 |
0 |
0 |
1 |
134 |
1168 |
7085 |
22903 |
|
Date: 2025-02-15:
| 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 |
290 |
39 |
25 |
0 |
0 |
0 |
0 |
| OW |
0 |
57 |
16 |
45 |
7 |
0 |
0 |
0 |
| VODI |
0 |
35 |
14 |
37 |
17 |
24 |
0 |
0 |
| ODI |
0 |
15 |
2 |
51 |
31 |
48 |
0 |
2 |
| CDI |
0 |
1 |
1 |
72 |
130 |
240 |
21 |
36 |
| VCDI |
0 |
0 |
0 |
0 |
69 |
1093 |
9106 |
21572 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
304 |
44 |
33 |
0 |
0 |
0 |
0 |
| OW |
0 |
57 |
16 |
46 |
9 |
0 |
0 |
0 |
| VODI |
0 |
28 |
10 |
36 |
23 |
30 |
0 |
0 |
| ODI |
0 |
9 |
2 |
51 |
22 |
51 |
0 |
0 |
| CDI |
0 |
0 |
0 |
54 |
138 |
301 |
41 |
36 |
| VCDI |
0 |
0 |
0 |
10 |
62 |
1023 |
9086 |
21574 |
|
Date: 2025-02-17:
| 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 |
0 |
214 |
23 |
62 |
24 |
0 |
0 |
0 |
| OW |
0 |
80 |
35 |
39 |
15 |
0 |
0 |
0 |
| VODI |
0 |
3 |
12 |
91 |
26 |
2 |
0 |
0 |
| ODI |
0 |
0 |
0 |
41 |
48 |
11 |
0 |
0 |
| CDI |
0 |
0 |
0 |
24 |
108 |
127 |
37 |
20 |
| VCDI |
0 |
0 |
0 |
0 |
61 |
486 |
6593 |
24914 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
213 |
27 |
71 |
32 |
0 |
0 |
0 |
| OW |
0 |
57 |
15 |
44 |
19 |
1 |
0 |
0 |
| VODI |
0 |
25 |
22 |
42 |
27 |
9 |
10 |
0 |
| ODI |
0 |
2 |
6 |
41 |
23 |
31 |
44 |
0 |
| CDI |
0 |
0 |
0 |
44 |
85 |
113 |
67 |
18 |
| VCDI |
0 |
0 |
0 |
15 |
96 |
472 |
6509 |
24916 |
|
Date: 2025-02-19:
| 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 |
0 |
227 |
21 |
49 |
1 |
0 |
0 |
0 |
| OW |
0 |
111 |
12 |
41 |
11 |
0 |
0 |
0 |
| VODI |
0 |
69 |
17 |
44 |
21 |
0 |
0 |
0 |
| ODI |
0 |
18 |
5 |
18 |
40 |
19 |
1 |
0 |
| CDI |
0 |
5 |
16 |
16 |
70 |
105 |
24 |
25 |
| VCDI |
0 |
0 |
2 |
50 |
94 |
790 |
7675 |
23499 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
191 |
21 |
53 |
9 |
0 |
0 |
0 |
| OW |
0 |
116 |
9 |
32 |
28 |
3 |
0 |
0 |
| VODI |
0 |
87 |
15 |
33 |
21 |
18 |
0 |
0 |
| ODI |
0 |
21 |
3 |
13 |
21 |
54 |
29 |
0 |
| CDI |
0 |
12 |
10 |
17 |
43 |
65 |
89 |
11 |
| VCDI |
0 |
3 |
15 |
70 |
115 |
774 |
7582 |
23513 |
|
Date: 2025-02-21:
| 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 |
220 |
33 |
41 |
0 |
0 |
0 |
0 |
| OW |
0 |
112 |
14 |
52 |
2 |
0 |
0 |
0 |
| VODI |
0 |
53 |
9 |
28 |
23 |
0 |
0 |
0 |
| ODI |
0 |
9 |
18 |
24 |
23 |
27 |
0 |
1 |
| CDI |
0 |
13 |
11 |
44 |
71 |
96 |
30 |
37 |
| VCDI |
0 |
0 |
0 |
26 |
98 |
478 |
7791 |
23712 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
190 |
28 |
47 |
2 |
0 |
0 |
0 |
| OW |
0 |
115 |
17 |
51 |
19 |
0 |
0 |
0 |
| VODI |
0 |
75 |
8 |
32 |
30 |
27 |
0 |
0 |
| ODI |
0 |
19 |
11 |
10 |
21 |
70 |
5 |
6 |
| CDI |
0 |
8 |
16 |
33 |
52 |
75 |
63 |
34 |
| VCDI |
0 |
0 |
5 |
42 |
93 |
429 |
7753 |
23710 |
|
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