Validation of sea ice concentration - Asian sector
Bulletin date: 2023-03-23
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-03-17:
| 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 |
169 |
35 |
29 |
7 |
1 |
0 |
0 |
| OW |
0 |
40 |
5 |
10 |
4 |
1 |
0 |
0 |
| VODI |
0 |
30 |
14 |
14 |
23 |
2 |
0 |
0 |
| ODI |
0 |
16 |
4 |
25 |
47 |
16 |
7 |
14 |
| CDI |
0 |
13 |
8 |
21 |
47 |
82 |
133 |
122 |
| VCDI |
0 |
40 |
20 |
68 |
225 |
1424 |
14267 |
15099 |
|
...date precedes bulletin
|
Date: 2023-03-19:
| 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 |
115 |
31 |
44 |
18 |
3 |
0 |
0 |
| OW |
0 |
38 |
8 |
13 |
1 |
8 |
0 |
0 |
| VODI |
0 |
28 |
14 |
17 |
14 |
4 |
2 |
0 |
| ODI |
0 |
14 |
7 |
14 |
45 |
7 |
14 |
2 |
| CDI |
0 |
4 |
13 |
13 |
51 |
29 |
96 |
41 |
| VCDI |
0 |
1 |
7 |
49 |
145 |
772 |
11087 |
19313 |
|
...date precedes bulletin
|
Date: 2023-03-21:
| 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 |
93 |
129 |
37 |
18 |
1 |
0 |
0 |
| OW |
0 |
22 |
18 |
12 |
12 |
3 |
0 |
0 |
| VODI |
0 |
11 |
16 |
25 |
20 |
13 |
0 |
0 |
| ODI |
0 |
3 |
12 |
21 |
42 |
19 |
1 |
0 |
| CDI |
0 |
2 |
12 |
10 |
37 |
21 |
67 |
24 |
| VCDI |
0 |
0 |
3 |
48 |
107 |
571 |
9617 |
21035 |
|
...date precedes bulletin
|
Date: 2023-03-23:
| 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 |
166 |
41 |
29 |
11 |
0 |
0 |
0 |
| OW |
0 |
41 |
8 |
14 |
15 |
2 |
0 |
0 |
| VODI |
0 |
23 |
6 |
17 |
19 |
21 |
0 |
0 |
| ODI |
0 |
12 |
3 |
7 |
19 |
34 |
17 |
0 |
| CDI |
0 |
8 |
6 |
4 |
12 |
54 |
56 |
15 |
| VCDI |
0 |
3 |
8 |
17 |
63 |
536 |
11811 |
18984 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
173 |
38 |
29 |
16 |
1 |
0 |
0 |
| OW |
0 |
38 |
12 |
16 |
11 |
3 |
0 |
0 |
| VODI |
0 |
22 |
5 |
14 |
18 |
19 |
0 |
0 |
| ODI |
0 |
9 |
4 |
7 |
19 |
41 |
18 |
0 |
| CDI |
0 |
7 |
6 |
6 |
12 |
49 |
59 |
15 |
| VCDI |
0 |
4 |
7 |
16 |
63 |
534 |
11807 |
18984 |
|
Date: 2023-03-25:
| 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 |
142 |
43 |
30 |
8 |
1 |
0 |
0 |
| OW |
0 |
30 |
9 |
25 |
10 |
5 |
0 |
0 |
| VODI |
0 |
26 |
5 |
9 |
20 |
13 |
0 |
0 |
| ODI |
0 |
12 |
3 |
9 |
24 |
32 |
14 |
0 |
| CDI |
0 |
12 |
3 |
3 |
18 |
66 |
53 |
0 |
| VCDI |
0 |
7 |
7 |
12 |
98 |
1033 |
10933 |
19367 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
148 |
43 |
33 |
8 |
2 |
0 |
0 |
| OW |
0 |
30 |
8 |
22 |
9 |
6 |
0 |
0 |
| VODI |
0 |
18 |
7 |
10 |
22 |
12 |
0 |
0 |
| ODI |
0 |
13 |
3 |
8 |
25 |
36 |
15 |
0 |
| CDI |
0 |
14 |
2 |
3 |
20 |
64 |
55 |
0 |
| VCDI |
0 |
6 |
7 |
12 |
94 |
1030 |
10930 |
19367 |
|
Date: 2023-03-27:
| 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 |
102 |
38 |
37 |
12 |
7 |
0 |
0 |
| OW |
0 |
15 |
10 |
21 |
18 |
9 |
3 |
0 |
| VODI |
0 |
11 |
4 |
13 |
29 |
12 |
2 |
0 |
| ODI |
0 |
0 |
4 |
5 |
20 |
34 |
11 |
0 |
| CDI |
0 |
1 |
2 |
7 |
24 |
85 |
73 |
10 |
| VCDI |
0 |
0 |
0 |
1 |
9 |
384 |
10318 |
20751 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
94 |
34 |
40 |
16 |
12 |
3 |
0 |
| OW |
0 |
13 |
9 |
14 |
22 |
10 |
1 |
0 |
| VODI |
0 |
17 |
6 |
13 |
25 |
10 |
8 |
0 |
| ODI |
0 |
4 |
4 |
6 |
17 |
24 |
14 |
0 |
| CDI |
0 |
1 |
5 |
9 |
23 |
62 |
81 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
9 |
413 |
10300 |
20761 |
|
Date: 2023-03-29:
| 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 |
103 |
26 |
13 |
10 |
0 |
0 |
| OW |
0 |
9 |
21 |
23 |
7 |
9 |
1 |
0 |
| VODI |
0 |
7 |
4 |
27 |
25 |
14 |
5 |
0 |
| ODI |
0 |
2 |
1 |
9 |
24 |
23 |
5 |
0 |
| CDI |
0 |
1 |
0 |
2 |
25 |
48 |
75 |
24 |
| VCDI |
0 |
0 |
0 |
0 |
30 |
414 |
10448 |
20627 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
17 |
98 |
25 |
18 |
15 |
2 |
0 |
| OW |
0 |
10 |
12 |
22 |
8 |
12 |
4 |
0 |
| VODI |
0 |
6 |
15 |
14 |
17 |
18 |
5 |
0 |
| ODI |
0 |
2 |
3 |
19 |
17 |
19 |
8 |
0 |
| CDI |
0 |
3 |
1 |
5 |
37 |
52 |
70 |
0 |
| VCDI |
0 |
1 |
0 |
2 |
27 |
402 |
10445 |
20651 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
19 |
48 |
37 |
22 |
4 |
0 |
0 |
| OW |
0 |
7 |
6 |
31 |
11 |
21 |
2 |
0 |
| VODI |
0 |
9 |
2 |
18 |
13 |
15 |
13 |
0 |
| ODI |
0 |
6 |
3 |
11 |
28 |
45 |
11 |
0 |
| CDI |
0 |
1 |
1 |
10 |
59 |
70 |
47 |
0 |
| VCDI |
0 |
6 |
4 |
6 |
66 |
338 |
7175 |
23917 |
|
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