Validation of sea ice concentration - Asian sector
Bulletin date: 2023-04-20
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
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 |
|
...date precedes bulletin
|
Date: 2023-04-16:
| 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 |
40 |
12 |
8 |
9 |
0 |
0 |
0 |
| OW |
0 |
20 |
5 |
5 |
16 |
2 |
0 |
0 |
| VODI |
0 |
7 |
10 |
12 |
24 |
11 |
0 |
0 |
| ODI |
0 |
2 |
1 |
15 |
19 |
36 |
0 |
0 |
| CDI |
0 |
1 |
0 |
6 |
37 |
70 |
1 |
1 |
| VCDI |
0 |
0 |
0 |
0 |
11 |
375 |
7880 |
23446 |
|
...date precedes bulletin
|
Date: 2023-04-18:
| 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 |
55 |
18 |
17 |
4 |
0 |
0 |
0 |
| OW |
0 |
6 |
5 |
14 |
22 |
0 |
0 |
0 |
| VODI |
0 |
2 |
5 |
11 |
39 |
19 |
0 |
0 |
| ODI |
0 |
2 |
0 |
14 |
29 |
28 |
1 |
0 |
| CDI |
0 |
0 |
0 |
8 |
53 |
51 |
38 |
0 |
| VCDI |
0 |
0 |
0 |
5 |
56 |
471 |
7862 |
23247 |
|
...date precedes bulletin
|
Date: 2023-04-20:
| 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 |
97 |
15 |
7 |
2 |
0 |
0 |
0 |
| OW |
0 |
9 |
10 |
21 |
20 |
1 |
0 |
0 |
| VODI |
0 |
11 |
11 |
14 |
50 |
0 |
0 |
0 |
| ODI |
0 |
3 |
6 |
10 |
30 |
16 |
0 |
0 |
| CDI |
0 |
0 |
4 |
10 |
47 |
47 |
13 |
5 |
| VCDI |
0 |
0 |
0 |
23 |
139 |
953 |
9709 |
20799 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
96 |
19 |
10 |
2 |
0 |
0 |
0 |
| OW |
0 |
10 |
6 |
19 |
24 |
0 |
0 |
0 |
| VODI |
0 |
11 |
8 |
14 |
40 |
2 |
0 |
0 |
| ODI |
0 |
2 |
8 |
9 |
33 |
15 |
0 |
0 |
| CDI |
0 |
1 |
4 |
8 |
49 |
47 |
14 |
6 |
| VCDI |
0 |
0 |
1 |
25 |
140 |
953 |
9708 |
20798 |
|
Date: 2023-04-22:
| 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 |
14 |
10 |
1 |
0 |
0 |
0 |
| OW |
0 |
11 |
14 |
31 |
14 |
1 |
0 |
0 |
| VODI |
0 |
9 |
9 |
32 |
27 |
5 |
0 |
0 |
| ODI |
0 |
9 |
7 |
26 |
42 |
26 |
6 |
0 |
| CDI |
0 |
7 |
8 |
48 |
106 |
97 |
84 |
0 |
| VCDI |
0 |
3 |
13 |
75 |
330 |
1473 |
13965 |
15479 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
100 |
18 |
7 |
1 |
0 |
0 |
0 |
| OW |
0 |
13 |
11 |
35 |
14 |
1 |
0 |
0 |
| VODI |
0 |
10 |
8 |
29 |
27 |
4 |
0 |
0 |
| ODI |
0 |
6 |
7 |
28 |
36 |
28 |
7 |
0 |
| CDI |
0 |
6 |
6 |
45 |
109 |
102 |
80 |
0 |
| VCDI |
0 |
4 |
15 |
78 |
333 |
1467 |
13968 |
15479 |
|
Date: 2023-04-24:
| 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 |
101 |
22 |
44 |
1 |
0 |
0 |
0 |
| OW |
0 |
9 |
12 |
34 |
16 |
1 |
0 |
0 |
| VODI |
0 |
17 |
10 |
46 |
26 |
1 |
0 |
0 |
| ODI |
0 |
18 |
16 |
51 |
27 |
24 |
9 |
0 |
| CDI |
0 |
7 |
26 |
81 |
84 |
75 |
91 |
4 |
| VCDI |
0 |
0 |
16 |
135 |
360 |
1954 |
13846 |
14918 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
85 |
13 |
21 |
0 |
0 |
0 |
0 |
| OW |
0 |
23 |
12 |
35 |
5 |
0 |
0 |
0 |
| VODI |
0 |
18 |
18 |
43 |
17 |
1 |
0 |
0 |
| ODI |
0 |
6 |
11 |
53 |
39 |
23 |
19 |
0 |
| CDI |
0 |
18 |
25 |
74 |
80 |
101 |
116 |
5 |
| VCDI |
0 |
2 |
23 |
165 |
373 |
1930 |
13811 |
14917 |
|
Date: 2023-04-26:
| 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 |
150 |
13 |
28 |
4 |
0 |
0 |
0 |
| OW |
0 |
29 |
10 |
17 |
7 |
0 |
0 |
0 |
| VODI |
0 |
68 |
12 |
39 |
14 |
3 |
0 |
0 |
| ODI |
0 |
34 |
6 |
30 |
34 |
25 |
12 |
0 |
| CDI |
0 |
53 |
24 |
41 |
85 |
104 |
66 |
0 |
| VCDI |
0 |
55 |
36 |
90 |
322 |
1994 |
12270 |
16407 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
128 |
4 |
5 |
0 |
0 |
0 |
0 |
| OW |
0 |
48 |
13 |
22 |
3 |
0 |
0 |
0 |
| VODI |
0 |
48 |
11 |
32 |
6 |
0 |
0 |
0 |
| ODI |
0 |
27 |
12 |
31 |
24 |
8 |
5 |
0 |
| CDI |
0 |
70 |
14 |
34 |
65 |
79 |
105 |
0 |
| VCDI |
0 |
68 |
47 |
121 |
368 |
2039 |
12238 |
16407 |
|
Date: 2023-04-28:
| 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 |
121 |
27 |
11 |
1 |
0 |
0 |
0 |
| OW |
0 |
43 |
11 |
29 |
9 |
0 |
0 |
0 |
| VODI |
0 |
72 |
16 |
17 |
14 |
3 |
0 |
0 |
| ODI |
0 |
50 |
4 |
7 |
36 |
31 |
8 |
0 |
| CDI |
0 |
78 |
0 |
17 |
106 |
86 |
80 |
0 |
| VCDI |
0 |
66 |
23 |
65 |
265 |
1699 |
10212 |
18875 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
110 |
16 |
5 |
0 |
0 |
0 |
0 |
| OW |
0 |
53 |
16 |
14 |
1 |
0 |
0 |
0 |
| VODI |
0 |
55 |
20 |
29 |
17 |
8 |
0 |
0 |
| ODI |
0 |
39 |
6 |
12 |
8 |
8 |
0 |
0 |
| CDI |
0 |
90 |
8 |
12 |
30 |
89 |
92 |
0 |
| VCDI |
0 |
83 |
15 |
74 |
375 |
1714 |
10208 |
18875 |
|
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