Validation of sea ice concentration - Asian sector
Bulletin date: 2023-03-30
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-03-24:
| 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 |
149 |
48 |
27 |
11 |
1 |
0 |
0 |
| OW |
0 |
37 |
10 |
18 |
11 |
5 |
0 |
0 |
| VODI |
0 |
23 |
5 |
15 |
15 |
15 |
0 |
0 |
| ODI |
0 |
15 |
4 |
9 |
18 |
32 |
19 |
0 |
| CDI |
0 |
7 |
10 |
6 |
29 |
63 |
26 |
30 |
| VCDI |
0 |
3 |
16 |
15 |
117 |
738 |
10563 |
19972 |
|
...date precedes bulletin
|
Date: 2023-03-26:
| 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 |
118 |
41 |
38 |
10 |
6 |
0 |
0 |
| OW |
0 |
25 |
9 |
23 |
11 |
6 |
0 |
0 |
| VODI |
0 |
19 |
6 |
13 |
17 |
16 |
1 |
0 |
| ODI |
0 |
9 |
4 |
12 |
10 |
31 |
9 |
0 |
| CDI |
0 |
9 |
3 |
2 |
27 |
74 |
55 |
4 |
| VCDI |
0 |
2 |
4 |
10 |
55 |
846 |
9018 |
21539 |
|
...date precedes bulletin
|
Date: 2023-03-28:
| 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 |
78 |
30 |
14 |
8 |
0 |
0 |
| OW |
0 |
12 |
8 |
23 |
16 |
9 |
0 |
0 |
| VODI |
0 |
7 |
9 |
11 |
34 |
22 |
0 |
0 |
| ODI |
0 |
0 |
3 |
8 |
12 |
33 |
9 |
0 |
| CDI |
0 |
1 |
0 |
4 |
9 |
65 |
155 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
6 |
253 |
8536 |
22655 |
|
...date precedes bulletin
|
Date: 2023-03-30:
| 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 |
49 |
45 |
33 |
22 |
9 |
0 |
0 |
| OW |
0 |
16 |
12 |
27 |
8 |
12 |
3 |
0 |
| VODI |
0 |
7 |
7 |
23 |
16 |
13 |
6 |
0 |
| ODI |
0 |
4 |
2 |
13 |
24 |
13 |
12 |
0 |
| CDI |
0 |
1 |
0 |
8 |
35 |
53 |
34 |
51 |
| VCDI |
0 |
0 |
0 |
2 |
55 |
377 |
7647 |
23443 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
46 |
44 |
39 |
22 |
8 |
0 |
0 |
| OW |
0 |
17 |
12 |
24 |
8 |
14 |
2 |
0 |
| VODI |
0 |
9 |
7 |
21 |
19 |
15 |
11 |
0 |
| ODI |
0 |
4 |
3 |
11 |
25 |
10 |
8 |
0 |
| CDI |
0 |
1 |
0 |
9 |
30 |
51 |
33 |
69 |
| VCDI |
0 |
0 |
0 |
2 |
56 |
379 |
7648 |
23425 |
|
Date: 2023-04-01:
| 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 |
17 |
64 |
31 |
16 |
3 |
0 |
0 |
| OW |
0 |
4 |
15 |
23 |
10 |
13 |
0 |
0 |
| VODI |
0 |
4 |
4 |
34 |
18 |
23 |
0 |
0 |
| ODI |
0 |
1 |
0 |
11 |
25 |
47 |
2 |
0 |
| CDI |
0 |
1 |
2 |
7 |
27 |
74 |
15 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
47 |
512 |
8119 |
22911 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
16 |
65 |
32 |
17 |
4 |
0 |
0 |
| OW |
0 |
5 |
13 |
22 |
9 |
12 |
0 |
0 |
| VODI |
0 |
4 |
5 |
33 |
21 |
28 |
0 |
0 |
| ODI |
0 |
1 |
1 |
12 |
23 |
44 |
2 |
0 |
| CDI |
0 |
1 |
1 |
7 |
32 |
79 |
14 |
1 |
| VCDI |
0 |
0 |
0 |
2 |
41 |
505 |
8120 |
22910 |
|
Date: 2023-04-03:
| 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 |
25 |
52 |
15 |
5 |
0 |
0 |
| OW |
0 |
6 |
7 |
30 |
12 |
13 |
0 |
0 |
| VODI |
0 |
2 |
3 |
19 |
37 |
20 |
0 |
0 |
| ODI |
0 |
0 |
1 |
5 |
33 |
33 |
0 |
0 |
| CDI |
0 |
0 |
0 |
1 |
26 |
87 |
111 |
1 |
| VCDI |
0 |
0 |
0 |
0 |
26 |
465 |
10953 |
20072 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
18 |
19 |
51 |
17 |
12 |
0 |
0 |
| OW |
0 |
6 |
5 |
25 |
14 |
18 |
0 |
0 |
| VODI |
0 |
5 |
7 |
19 |
25 |
24 |
2 |
0 |
| ODI |
0 |
1 |
4 |
6 |
35 |
23 |
7 |
0 |
| CDI |
0 |
0 |
1 |
6 |
31 |
77 |
70 |
1 |
| VCDI |
0 |
0 |
0 |
0 |
27 |
469 |
10985 |
20072 |
|
Date: 2023-04-05:
| 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 |
18 |
38 |
20 |
12 |
1 |
0 |
| OW |
0 |
5 |
8 |
23 |
12 |
11 |
4 |
0 |
| VODI |
0 |
4 |
4 |
21 |
23 |
20 |
3 |
0 |
| ODI |
0 |
0 |
1 |
9 |
36 |
32 |
3 |
0 |
| CDI |
0 |
0 |
0 |
4 |
40 |
80 |
67 |
5 |
| VCDI |
0 |
0 |
0 |
0 |
47 |
589 |
7239 |
23680 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
17 |
11 |
30 |
24 |
15 |
2 |
0 |
| OW |
0 |
8 |
6 |
28 |
13 |
18 |
6 |
0 |
| VODI |
0 |
3 |
8 |
15 |
15 |
28 |
5 |
0 |
| ODI |
0 |
3 |
4 |
10 |
34 |
22 |
9 |
0 |
| CDI |
0 |
1 |
2 |
8 |
46 |
80 |
84 |
2 |
| VCDI |
0 |
0 |
0 |
4 |
46 |
581 |
7211 |
23683 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
22 |
3 |
21 |
24 |
9 |
3 |
0 |
| OW |
0 |
9 |
3 |
4 |
19 |
19 |
12 |
0 |
| VODI |
0 |
10 |
5 |
6 |
19 |
20 |
17 |
0 |
| ODI |
0 |
6 |
4 |
7 |
15 |
26 |
18 |
0 |
| CDI |
0 |
5 |
3 |
14 |
42 |
54 |
30 |
0 |
| VCDI |
0 |
1 |
1 |
9 |
85 |
669 |
7686 |
23182 |
|
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