Validation of sea ice concentration - Asian sector
Bulletin date: 2023-04-13
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-04-07:
| 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 |
0 |
37 |
9 |
21 |
24 |
8 |
0 |
0 |
| OW |
0 |
9 |
6 |
9 |
16 |
20 |
4 |
0 |
| VODI |
0 |
6 |
2 |
15 |
21 |
19 |
17 |
0 |
| ODI |
0 |
1 |
2 |
11 |
24 |
26 |
14 |
0 |
| CDI |
0 |
0 |
0 |
4 |
40 |
73 |
42 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
79 |
651 |
7689 |
23182 |
|
...date precedes bulletin
|
Date: 2023-04-09:
| 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 |
0 |
29 |
26 |
24 |
18 |
6 |
0 |
0 |
| OW |
0 |
9 |
19 |
13 |
31 |
8 |
0 |
0 |
| VODI |
0 |
3 |
18 |
9 |
26 |
27 |
0 |
0 |
| ODI |
0 |
2 |
3 |
18 |
19 |
25 |
3 |
0 |
| CDI |
0 |
1 |
0 |
14 |
34 |
70 |
40 |
20 |
| VCDI |
0 |
0 |
1 |
8 |
110 |
711 |
9601 |
21136 |
|
...date precedes bulletin
|
Date: 2023-04-11:
| 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 |
22 |
9 |
21 |
19 |
0 |
0 |
0 |
| OW |
0 |
3 |
3 |
9 |
32 |
0 |
0 |
0 |
| VODI |
0 |
1 |
1 |
5 |
67 |
6 |
0 |
0 |
| ODI |
0 |
0 |
1 |
3 |
50 |
30 |
2 |
0 |
| CDI |
0 |
0 |
0 |
8 |
23 |
113 |
61 |
2 |
| VCDI |
0 |
0 |
0 |
0 |
38 |
478 |
10203 |
20872 |
|
...date precedes bulletin
|
Date: 2023-04-13:
| 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 |
0 |
16 |
7 |
6 |
15 |
8 |
0 |
0 |
| OW |
0 |
3 |
3 |
9 |
12 |
21 |
0 |
0 |
| VODI |
0 |
0 |
0 |
3 |
22 |
43 |
0 |
0 |
| ODI |
0 |
0 |
0 |
7 |
11 |
53 |
1 |
0 |
| CDI |
0 |
0 |
0 |
2 |
25 |
130 |
15 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
21 |
426 |
7252 |
23971 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
17 |
8 |
9 |
15 |
9 |
0 |
0 |
| OW |
0 |
2 |
2 |
8 |
12 |
20 |
0 |
0 |
| VODI |
0 |
0 |
0 |
2 |
22 |
44 |
0 |
0 |
| ODI |
0 |
0 |
0 |
6 |
9 |
51 |
1 |
0 |
| CDI |
0 |
0 |
0 |
2 |
27 |
124 |
16 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
21 |
433 |
7251 |
23971 |
|
Date: 2023-04-15:
| 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 |
36 |
3 |
8 |
9 |
7 |
0 |
0 |
| OW |
0 |
9 |
6 |
8 |
5 |
13 |
0 |
0 |
| VODI |
0 |
7 |
4 |
10 |
16 |
35 |
1 |
0 |
| ODI |
0 |
2 |
1 |
7 |
14 |
42 |
8 |
0 |
| CDI |
0 |
1 |
0 |
2 |
23 |
64 |
15 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
227 |
9065 |
22433 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
36 |
4 |
8 |
8 |
7 |
0 |
0 |
| OW |
0 |
11 |
5 |
8 |
5 |
16 |
0 |
0 |
| VODI |
0 |
5 |
4 |
9 |
13 |
31 |
2 |
0 |
| ODI |
0 |
2 |
1 |
6 |
13 |
38 |
7 |
0 |
| CDI |
0 |
1 |
0 |
4 |
23 |
62 |
14 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
6 |
234 |
9066 |
22433 |
|
Date: 2023-04-17:
| 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 |
51 |
12 |
7 |
9 |
0 |
0 |
0 |
| OW |
0 |
6 |
13 |
13 |
9 |
0 |
0 |
0 |
| VODI |
0 |
4 |
2 |
18 |
46 |
5 |
0 |
0 |
| ODI |
0 |
2 |
0 |
11 |
40 |
27 |
0 |
0 |
| CDI |
0 |
1 |
0 |
3 |
49 |
78 |
30 |
1 |
| VCDI |
0 |
0 |
0 |
0 |
25 |
365 |
6607 |
24648 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
48 |
9 |
9 |
12 |
0 |
0 |
0 |
| OW |
0 |
8 |
10 |
3 |
16 |
0 |
0 |
0 |
| VODI |
0 |
4 |
7 |
19 |
35 |
2 |
0 |
0 |
| ODI |
0 |
3 |
1 |
15 |
39 |
15 |
0 |
0 |
| CDI |
0 |
1 |
0 |
6 |
49 |
67 |
1 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
27 |
391 |
6636 |
24649 |
|
Date: 2023-04-19:
| 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 |
79 |
21 |
9 |
0 |
0 |
0 |
0 |
| OW |
0 |
8 |
5 |
25 |
12 |
0 |
0 |
0 |
| VODI |
0 |
5 |
8 |
17 |
50 |
0 |
0 |
0 |
| ODI |
0 |
2 |
1 |
10 |
39 |
20 |
0 |
0 |
| CDI |
0 |
0 |
0 |
10 |
52 |
44 |
10 |
4 |
| VCDI |
0 |
0 |
0 |
13 |
69 |
636 |
9110 |
21823 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
63 |
10 |
10 |
0 |
0 |
0 |
0 |
| OW |
0 |
19 |
6 |
11 |
13 |
0 |
0 |
0 |
| VODI |
0 |
5 |
14 |
15 |
32 |
1 |
0 |
0 |
| ODI |
0 |
5 |
4 |
17 |
51 |
8 |
0 |
0 |
| CDI |
0 |
2 |
1 |
16 |
71 |
40 |
7 |
11 |
| VCDI |
0 |
0 |
0 |
15 |
55 |
651 |
9113 |
21816 |
|
Date: 2023-04-21:
| 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 |
100 |
16 |
6 |
2 |
0 |
0 |
0 |
| OW |
0 |
13 |
10 |
23 |
21 |
2 |
0 |
0 |
| VODI |
0 |
15 |
6 |
17 |
40 |
3 |
0 |
0 |
| ODI |
0 |
6 |
8 |
10 |
35 |
19 |
4 |
0 |
| CDI |
0 |
1 |
6 |
14 |
77 |
77 |
50 |
0 |
| VCDI |
0 |
0 |
5 |
34 |
248 |
1185 |
12559 |
17470 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
59 |
4 |
3 |
0 |
0 |
0 |
0 |
| OW |
0 |
21 |
4 |
10 |
10 |
0 |
0 |
0 |
| VODI |
0 |
24 |
9 |
13 |
39 |
4 |
0 |
0 |
| ODI |
0 |
20 |
9 |
9 |
42 |
8 |
3 |
0 |
| CDI |
0 |
11 |
18 |
33 |
68 |
50 |
67 |
0 |
| VCDI |
0 |
0 |
7 |
36 |
264 |
1224 |
12543 |
17470 |
|
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