Validation of sea ice concentration - Asian sector
Bulletin date: 2023-04-06
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-03-31:
| 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 |
14 |
20 |
72 |
28 |
5 |
0 |
0 |
| OW |
0 |
4 |
1 |
41 |
13 |
16 |
0 |
0 |
| VODI |
0 |
1 |
1 |
37 |
13 |
17 |
2 |
0 |
| ODI |
0 |
0 |
0 |
11 |
44 |
24 |
6 |
0 |
| CDI |
0 |
0 |
0 |
3 |
60 |
71 |
10 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
38 |
452 |
3042 |
28035 |
|
...date precedes bulletin
|
Date: 2023-04-02:
| 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 |
4 |
12 |
70 |
29 |
9 |
0 |
0 |
| OW |
0 |
1 |
0 |
34 |
21 |
12 |
0 |
0 |
| VODI |
0 |
1 |
0 |
29 |
25 |
21 |
0 |
0 |
| ODI |
0 |
0 |
0 |
3 |
57 |
34 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
47 |
79 |
17 |
10 |
| VCDI |
0 |
0 |
0 |
0 |
23 |
417 |
4547 |
26580 |
|
...date precedes bulletin
|
Date: 2023-04-04:
| 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 |
16 |
9 |
57 |
32 |
11 |
0 |
0 |
| OW |
0 |
3 |
0 |
17 |
29 |
12 |
0 |
0 |
| VODI |
0 |
0 |
0 |
16 |
40 |
20 |
0 |
0 |
| ODI |
0 |
0 |
0 |
2 |
49 |
33 |
3 |
0 |
| CDI |
0 |
0 |
0 |
0 |
44 |
98 |
12 |
107 |
| VCDI |
0 |
0 |
0 |
0 |
21 |
521 |
4068 |
26862 |
|
...date precedes bulletin
|
Date: 2023-04-06:
| 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 |
23 |
9 |
16 |
32 |
7 |
3 |
0 |
| OW |
0 |
4 |
2 |
19 |
20 |
19 |
10 |
0 |
| VODI |
0 |
0 |
0 |
20 |
25 |
18 |
13 |
0 |
| ODI |
0 |
0 |
0 |
7 |
31 |
13 |
13 |
0 |
| CDI |
0 |
0 |
0 |
0 |
51 |
37 |
83 |
6 |
| VCDI |
0 |
0 |
0 |
0 |
16 |
455 |
5450 |
25680 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
25 |
9 |
16 |
39 |
8 |
3 |
0 |
| OW |
0 |
2 |
2 |
19 |
18 |
19 |
10 |
0 |
| VODI |
0 |
0 |
0 |
23 |
21 |
17 |
14 |
0 |
| ODI |
0 |
0 |
0 |
4 |
40 |
18 |
12 |
0 |
| CDI |
0 |
0 |
0 |
0 |
44 |
34 |
89 |
8 |
| VCDI |
0 |
0 |
0 |
0 |
13 |
453 |
5444 |
25678 |
|
Date: 2023-04-08:
| 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 |
53 |
0 |
18 |
33 |
8 |
0 |
0 |
| OW |
0 |
8 |
10 |
7 |
29 |
10 |
0 |
0 |
| VODI |
0 |
0 |
3 |
17 |
49 |
17 |
0 |
0 |
| ODI |
0 |
0 |
0 |
24 |
35 |
23 |
0 |
0 |
| CDI |
0 |
0 |
0 |
3 |
61 |
42 |
43 |
1 |
| VCDI |
0 |
0 |
0 |
0 |
36 |
576 |
5911 |
25065 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
52 |
1 |
20 |
42 |
8 |
0 |
0 |
| OW |
0 |
9 |
5 |
5 |
24 |
8 |
0 |
0 |
| VODI |
0 |
0 |
7 |
21 |
50 |
21 |
0 |
0 |
| ODI |
0 |
0 |
0 |
22 |
41 |
23 |
0 |
0 |
| CDI |
0 |
0 |
0 |
1 |
49 |
58 |
40 |
3 |
| VCDI |
0 |
0 |
0 |
0 |
37 |
558 |
5914 |
25063 |
|
Date: 2023-04-10:
| 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 |
0 |
34 |
14 |
15 |
27 |
0 |
0 |
0 |
| OW |
0 |
1 |
3 |
19 |
22 |
8 |
0 |
0 |
| VODI |
0 |
0 |
0 |
23 |
29 |
29 |
0 |
0 |
| ODI |
0 |
0 |
0 |
2 |
49 |
37 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
29 |
137 |
63 |
2 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
581 |
6212 |
24744 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
34 |
12 |
8 |
40 |
7 |
0 |
0 |
| OW |
0 |
1 |
5 |
17 |
18 |
30 |
0 |
0 |
| VODI |
0 |
0 |
0 |
23 |
20 |
34 |
0 |
0 |
| ODI |
0 |
0 |
0 |
11 |
42 |
34 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
32 |
116 |
44 |
37 |
| VCDI |
0 |
0 |
0 |
0 |
6 |
571 |
6231 |
24709 |
|
Date: 2023-04-12:
| 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 |
0 |
3 |
7 |
18 |
18 |
8 |
0 |
0 |
| OW |
0 |
1 |
0 |
17 |
11 |
15 |
0 |
0 |
| VODI |
0 |
0 |
0 |
2 |
24 |
45 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
30 |
59 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
36 |
146 |
25 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
14 |
314 |
6520 |
24769 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
2 |
7 |
10 |
17 |
22 |
0 |
0 |
| OW |
0 |
2 |
0 |
16 |
11 |
36 |
0 |
0 |
| VODI |
0 |
0 |
0 |
11 |
23 |
53 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
23 |
52 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
44 |
116 |
26 |
3 |
| VCDI |
0 |
0 |
0 |
0 |
15 |
308 |
6519 |
24766 |
|
Date: 2023-04-14:
| 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 |
0 |
21 |
9 |
16 |
17 |
0 |
0 |
0 |
| OW |
0 |
2 |
1 |
18 |
16 |
7 |
0 |
0 |
| VODI |
0 |
0 |
0 |
18 |
33 |
23 |
0 |
0 |
| ODI |
0 |
0 |
0 |
2 |
33 |
32 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
39 |
63 |
3 |
1 |
| VCDI |
0 |
0 |
0 |
0 |
12 |
224 |
3826 |
27666 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
20 |
3 |
12 |
21 |
7 |
0 |
0 |
| OW |
0 |
2 |
7 |
8 |
18 |
27 |
0 |
0 |
| VODI |
0 |
1 |
0 |
17 |
25 |
37 |
1 |
0 |
| ODI |
0 |
0 |
0 |
15 |
20 |
29 |
4 |
0 |
| CDI |
0 |
0 |
0 |
2 |
34 |
66 |
12 |
21 |
| VCDI |
0 |
0 |
0 |
0 |
32 |
183 |
3812 |
27646 |
|
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