Validation of sea ice concentration - Asian sector
Bulletin date: 2025-01-23
Data source: OSI SAF N.H. multi-product 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 |
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 |
|
...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 |
28 |
338 |
6 |
0 |
0 |
0 |
0 |
0 |
| OW |
6 |
147 |
17 |
32 |
0 |
0 |
0 |
0 |
| VODI |
0 |
66 |
18 |
95 |
48 |
0 |
0 |
0 |
| ODI |
0 |
24 |
8 |
50 |
88 |
21 |
0 |
0 |
| CDI |
0 |
13 |
15 |
66 |
131 |
148 |
51 |
1 |
| VCDI |
0 |
0 |
0 |
25 |
139 |
308 |
3576 |
27631 |
|
...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 |
6 |
398 |
11 |
2 |
0 |
0 |
0 |
0 |
| OW |
2 |
74 |
25 |
25 |
0 |
0 |
0 |
0 |
| VODI |
0 |
10 |
13 |
66 |
47 |
3 |
0 |
0 |
| ODI |
0 |
7 |
3 |
30 |
68 |
45 |
0 |
0 |
| CDI |
0 |
3 |
3 |
23 |
79 |
261 |
27 |
0 |
| VCDI |
0 |
0 |
0 |
11 |
88 |
403 |
4350 |
27013 |
|
...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 |
13 |
413 |
19 |
11 |
0 |
0 |
0 |
0 |
| OW |
0 |
46 |
14 |
30 |
0 |
0 |
0 |
0 |
| VODI |
0 |
23 |
11 |
37 |
22 |
0 |
0 |
0 |
| ODI |
0 |
11 |
10 |
23 |
81 |
23 |
1 |
0 |
| CDI |
0 |
4 |
5 |
46 |
95 |
228 |
95 |
10 |
| VCDI |
0 |
0 |
0 |
18 |
85 |
347 |
4586 |
26789 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13 |
409 |
18 |
14 |
0 |
0 |
0 |
0 |
| OW |
0 |
50 |
15 |
30 |
0 |
0 |
0 |
0 |
| VODI |
0 |
28 |
14 |
35 |
34 |
0 |
0 |
0 |
| ODI |
0 |
8 |
7 |
30 |
74 |
27 |
0 |
0 |
| CDI |
0 |
2 |
5 |
43 |
90 |
238 |
100 |
16 |
| VCDI |
0 |
0 |
0 |
13 |
85 |
333 |
4582 |
26783 |
|
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 |
397 |
15 |
18 |
0 |
0 |
0 |
0 |
| OW |
0 |
50 |
7 |
27 |
0 |
0 |
0 |
0 |
| VODI |
0 |
29 |
10 |
35 |
11 |
14 |
0 |
0 |
| ODI |
0 |
15 |
7 |
32 |
59 |
64 |
1 |
0 |
| CDI |
0 |
5 |
11 |
51 |
110 |
156 |
179 |
5 |
| VCDI |
0 |
0 |
0 |
9 |
118 |
374 |
7211 |
24076 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
382 |
16 |
23 |
0 |
0 |
0 |
0 |
| OW |
0 |
67 |
6 |
26 |
0 |
0 |
0 |
0 |
| VODI |
0 |
31 |
11 |
37 |
14 |
13 |
0 |
0 |
| ODI |
0 |
14 |
7 |
30 |
55 |
82 |
1 |
0 |
| CDI |
0 |
2 |
10 |
48 |
110 |
137 |
209 |
7 |
| VCDI |
0 |
0 |
0 |
8 |
119 |
376 |
7181 |
24074 |
|
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 |
371 |
14 |
19 |
0 |
0 |
0 |
0 |
| OW |
0 |
73 |
2 |
24 |
0 |
3 |
0 |
0 |
| VODI |
0 |
29 |
5 |
40 |
8 |
23 |
1 |
0 |
| ODI |
0 |
15 |
7 |
30 |
61 |
45 |
8 |
0 |
| CDI |
0 |
5 |
16 |
63 |
100 |
186 |
72 |
11 |
| VCDI |
0 |
0 |
0 |
39 |
194 |
1172 |
9001 |
21459 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
344 |
14 |
17 |
0 |
0 |
0 |
0 |
| OW |
0 |
83 |
1 |
26 |
0 |
0 |
0 |
0 |
| VODI |
0 |
37 |
2 |
41 |
9 |
18 |
0 |
0 |
| ODI |
0 |
21 |
8 |
30 |
60 |
65 |
8 |
0 |
| CDI |
0 |
8 |
18 |
50 |
107 |
193 |
75 |
10 |
| VCDI |
0 |
0 |
1 |
51 |
187 |
1153 |
8999 |
21460 |
|
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 |
394 |
16 |
14 |
0 |
0 |
0 |
0 |
| OW |
0 |
107 |
22 |
26 |
0 |
0 |
0 |
0 |
| VODI |
0 |
38 |
16 |
46 |
8 |
5 |
0 |
0 |
| ODI |
0 |
1 |
18 |
44 |
29 |
30 |
19 |
1 |
| CDI |
0 |
0 |
0 |
53 |
129 |
108 |
145 |
12 |
| VCDI |
0 |
0 |
0 |
11 |
94 |
602 |
7254 |
23854 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
306 |
14 |
9 |
0 |
0 |
0 |
0 |
| OW |
0 |
104 |
6 |
15 |
0 |
0 |
0 |
0 |
| VODI |
0 |
79 |
5 |
36 |
5 |
11 |
0 |
0 |
| ODI |
0 |
36 |
11 |
21 |
31 |
56 |
28 |
1 |
| CDI |
0 |
15 |
35 |
58 |
82 |
78 |
159 |
8 |
| VCDI |
0 |
0 |
1 |
55 |
142 |
600 |
7231 |
23858 |
|
Date: 2025-01-31:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
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