Validation of sea ice concentration - Asian sector
Bulletin date: 2023-04-06
Data source: OSI SAF N.H. AMSR 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 |
32 |
51 |
34 |
18 |
4 |
0 |
0 |
| OW |
0 |
7 |
8 |
34 |
12 |
14 |
0 |
0 |
| VODI |
0 |
5 |
4 |
25 |
17 |
16 |
4 |
0 |
| ODI |
0 |
1 |
1 |
14 |
40 |
18 |
11 |
0 |
| CDI |
0 |
2 |
0 |
3 |
55 |
64 |
20 |
0 |
| VCDI |
0 |
1 |
0 |
3 |
57 |
377 |
7213 |
23917 |
|
...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 |
20 |
44 |
33 |
22 |
5 |
0 |
0 |
| OW |
0 |
5 |
10 |
27 |
18 |
8 |
0 |
0 |
| VODI |
0 |
3 |
4 |
24 |
28 |
15 |
2 |
0 |
| ODI |
0 |
0 |
2 |
13 |
47 |
30 |
2 |
0 |
| CDI |
0 |
1 |
0 |
2 |
36 |
84 |
24 |
6 |
| VCDI |
0 |
0 |
0 |
0 |
47 |
499 |
9316 |
21705 |
|
...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 |
26 |
26 |
58 |
6 |
9 |
0 |
0 |
| OW |
0 |
5 |
3 |
26 |
15 |
10 |
2 |
0 |
| VODI |
0 |
2 |
4 |
14 |
29 |
23 |
4 |
0 |
| ODI |
0 |
2 |
0 |
5 |
34 |
40 |
6 |
0 |
| CDI |
0 |
0 |
0 |
3 |
38 |
68 |
141 |
11 |
| VCDI |
0 |
0 |
0 |
0 |
43 |
580 |
6483 |
24366 |
|
...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 |
28 |
6 |
20 |
27 |
5 |
4 |
0 |
| OW |
0 |
8 |
6 |
14 |
17 |
16 |
13 |
0 |
| VODI |
0 |
2 |
3 |
10 |
30 |
22 |
9 |
0 |
| ODI |
0 |
0 |
0 |
10 |
25 |
19 |
10 |
0 |
| CDI |
0 |
0 |
0 |
2 |
27 |
67 |
81 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
34 |
630 |
9610 |
21327 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
32 |
6 |
19 |
32 |
7 |
4 |
0 |
| OW |
0 |
4 |
6 |
15 |
15 |
17 |
13 |
0 |
| VODI |
0 |
2 |
3 |
13 |
27 |
21 |
9 |
0 |
| ODI |
0 |
0 |
0 |
8 |
34 |
23 |
9 |
0 |
| CDI |
0 |
0 |
0 |
1 |
19 |
65 |
89 |
1 |
| VCDI |
0 |
0 |
0 |
0 |
33 |
626 |
9603 |
21326 |
|
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 |
51 |
4 |
27 |
23 |
7 |
0 |
0 |
| OW |
0 |
12 |
11 |
9 |
24 |
8 |
0 |
0 |
| VODI |
0 |
5 |
8 |
15 |
32 |
26 |
0 |
0 |
| ODI |
0 |
2 |
2 |
23 |
26 |
29 |
0 |
0 |
| CDI |
0 |
1 |
0 |
8 |
44 |
64 |
33 |
0 |
| VCDI |
0 |
0 |
0 |
4 |
69 |
721 |
8768 |
22026 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
54 |
3 |
30 |
29 |
7 |
0 |
0 |
| OW |
0 |
10 |
7 |
7 |
20 |
7 |
0 |
0 |
| VODI |
0 |
4 |
13 |
18 |
36 |
28 |
0 |
0 |
| ODI |
0 |
2 |
2 |
21 |
30 |
31 |
0 |
0 |
| CDI |
0 |
1 |
0 |
5 |
35 |
78 |
29 |
3 |
| VCDI |
0 |
0 |
0 |
5 |
68 |
704 |
8772 |
22023 |
|
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 |
35 |
13 |
22 |
20 |
0 |
0 |
0 |
| OW |
0 |
6 |
1 |
16 |
25 |
5 |
0 |
0 |
| VODI |
0 |
0 |
1 |
25 |
41 |
14 |
0 |
0 |
| ODI |
0 |
0 |
0 |
14 |
43 |
31 |
0 |
0 |
| CDI |
0 |
0 |
0 |
4 |
21 |
132 |
74 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
48 |
536 |
7794 |
23161 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
33 |
11 |
16 |
37 |
4 |
0 |
0 |
| OW |
0 |
4 |
2 |
18 |
32 |
15 |
0 |
0 |
| VODI |
0 |
4 |
1 |
18 |
25 |
29 |
0 |
0 |
| ODI |
0 |
0 |
1 |
21 |
29 |
36 |
0 |
0 |
| CDI |
0 |
0 |
0 |
7 |
26 |
109 |
58 |
29 |
| VCDI |
0 |
0 |
0 |
1 |
49 |
525 |
7810 |
23132 |
|
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 |
18 |
5 |
7 |
18 |
6 |
0 |
0 |
| OW |
0 |
6 |
1 |
7 |
26 |
4 |
0 |
0 |
| VODI |
0 |
0 |
2 |
3 |
38 |
28 |
0 |
0 |
| ODI |
0 |
0 |
0 |
5 |
37 |
47 |
0 |
0 |
| CDI |
0 |
0 |
0 |
4 |
30 |
160 |
13 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
20 |
443 |
9108 |
22046 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
16 |
2 |
3 |
30 |
7 |
0 |
0 |
| OW |
0 |
5 |
4 |
8 |
21 |
27 |
0 |
0 |
| VODI |
0 |
3 |
2 |
6 |
40 |
36 |
0 |
0 |
| ODI |
0 |
0 |
0 |
4 |
23 |
48 |
0 |
0 |
| CDI |
0 |
0 |
0 |
4 |
31 |
131 |
22 |
1 |
| VCDI |
0 |
0 |
0 |
1 |
24 |
439 |
9099 |
22045 |
|
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 |
31 |
8 |
9 |
13 |
2 |
0 |
0 |
| OW |
0 |
5 |
6 |
12 |
17 |
4 |
0 |
0 |
| VODI |
0 |
2 |
4 |
8 |
40 |
20 |
0 |
0 |
| ODI |
0 |
1 |
0 |
3 |
23 |
40 |
0 |
0 |
| CDI |
0 |
0 |
0 |
4 |
16 |
82 |
4 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
11 |
320 |
9530 |
21867 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
22 |
6 |
11 |
18 |
6 |
0 |
0 |
| OW |
0 |
11 |
4 |
6 |
17 |
24 |
0 |
0 |
| VODI |
0 |
4 |
6 |
6 |
30 |
33 |
2 |
0 |
| ODI |
0 |
1 |
2 |
6 |
18 |
36 |
5 |
0 |
| CDI |
0 |
1 |
0 |
5 |
19 |
74 |
34 |
2 |
| VCDI |
0 |
0 |
0 |
2 |
18 |
295 |
9493 |
21865 |
|
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