Validation of sea ice concentration - Asian sector
Bulletin date: 2023-04-20
Data source: OSI SAF N.H. 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 |
21 |
9 |
16 |
17 |
0 |
0 |
0 |
| OW |
0 |
2 |
1 |
18 |
16 |
7 |
0 |
0 |
| VODI |
0 |
0 |
0 |
18 |
33 |
23 |
0 |
0 |
| ODI |
0 |
0 |
0 |
2 |
33 |
32 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
39 |
63 |
3 |
1 |
| VCDI |
0 |
0 |
0 |
0 |
12 |
224 |
3826 |
27666 |
|
...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 |
0 |
20 |
9 |
0 |
0 |
0 |
| OW |
0 |
7 |
12 |
11 |
18 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
25 |
32 |
7 |
0 |
0 |
| ODI |
0 |
0 |
0 |
15 |
38 |
20 |
0 |
0 |
| CDI |
0 |
0 |
0 |
5 |
57 |
53 |
0 |
1 |
| VCDI |
0 |
0 |
0 |
0 |
25 |
322 |
4254 |
27111 |
|
...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 |
32 |
21 |
39 |
2 |
0 |
0 |
0 |
| OW |
0 |
2 |
0 |
28 |
17 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
21 |
48 |
7 |
0 |
0 |
| ODI |
0 |
0 |
0 |
10 |
51 |
13 |
0 |
0 |
| CDI |
0 |
0 |
0 |
4 |
99 |
30 |
16 |
1 |
| VCDI |
0 |
0 |
0 |
0 |
72 |
441 |
3502 |
27626 |
|
...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 |
74 |
25 |
22 |
0 |
0 |
0 |
0 |
| OW |
0 |
2 |
7 |
39 |
13 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
43 |
43 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
15 |
50 |
0 |
0 |
0 |
| CDI |
0 |
0 |
0 |
13 |
77 |
11 |
12 |
13 |
| VCDI |
0 |
0 |
0 |
7 |
158 |
888 |
5360 |
25210 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
74 |
24 |
29 |
0 |
0 |
0 |
0 |
| OW |
0 |
2 |
6 |
35 |
16 |
0 |
0 |
0 |
| VODI |
0 |
0 |
2 |
35 |
38 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
17 |
50 |
0 |
0 |
0 |
| CDI |
0 |
0 |
0 |
12 |
80 |
12 |
8 |
17 |
| VCDI |
0 |
0 |
0 |
11 |
157 |
887 |
5364 |
25206 |
|
Date: 2023-04-22:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
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 |
82 |
23 |
63 |
0 |
0 |
0 |
0 |
| OW |
0 |
5 |
2 |
56 |
9 |
0 |
0 |
0 |
| VODI |
0 |
12 |
3 |
54 |
30 |
1 |
0 |
0 |
| ODI |
0 |
8 |
9 |
57 |
42 |
28 |
1 |
0 |
| CDI |
0 |
1 |
5 |
79 |
46 |
170 |
62 |
5 |
| VCDI |
0 |
0 |
0 |
78 |
275 |
1928 |
12179 |
16769 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
78 |
15 |
26 |
0 |
0 |
0 |
0 |
| OW |
0 |
10 |
9 |
54 |
2 |
0 |
0 |
0 |
| VODI |
0 |
8 |
4 |
72 |
13 |
0 |
0 |
0 |
| ODI |
0 |
9 |
0 |
54 |
47 |
31 |
10 |
0 |
| CDI |
0 |
3 |
14 |
74 |
50 |
179 |
93 |
6 |
| VCDI |
0 |
0 |
0 |
107 |
290 |
1917 |
12139 |
16768 |
|
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 |
110 |
26 |
59 |
0 |
0 |
0 |
0 |
| OW |
0 |
17 |
9 |
34 |
3 |
0 |
0 |
0 |
| VODI |
0 |
57 |
19 |
29 |
25 |
6 |
0 |
0 |
| ODI |
0 |
34 |
7 |
19 |
36 |
42 |
3 |
0 |
| CDI |
0 |
28 |
30 |
18 |
95 |
174 |
28 |
0 |
| VCDI |
0 |
19 |
24 |
83 |
333 |
2278 |
10290 |
18147 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
111 |
19 |
7 |
0 |
0 |
0 |
0 |
| OW |
0 |
22 |
17 |
47 |
0 |
0 |
0 |
0 |
| VODI |
0 |
31 |
14 |
52 |
0 |
0 |
0 |
0 |
| ODI |
0 |
25 |
10 |
36 |
18 |
17 |
1 |
0 |
| CDI |
0 |
43 |
25 |
23 |
57 |
145 |
74 |
0 |
| VCDI |
0 |
33 |
30 |
77 |
417 |
2338 |
10246 |
18147 |
|
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 |
96 |
36 |
28 |
0 |
0 |
0 |
0 |
| OW |
0 |
36 |
6 |
39 |
11 |
0 |
0 |
0 |
| VODI |
0 |
73 |
8 |
20 |
18 |
3 |
0 |
0 |
| ODI |
0 |
49 |
3 |
5 |
28 |
45 |
6 |
0 |
| CDI |
0 |
60 |
10 |
10 |
90 |
133 |
64 |
0 |
| VCDI |
0 |
29 |
19 |
59 |
326 |
1965 |
9054 |
19753 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
107 |
17 |
7 |
0 |
0 |
0 |
0 |
| OW |
0 |
45 |
19 |
20 |
0 |
0 |
0 |
0 |
| VODI |
0 |
43 |
10 |
49 |
22 |
5 |
0 |
0 |
| ODI |
0 |
32 |
5 |
16 |
15 |
4 |
1 |
0 |
| CDI |
0 |
72 |
10 |
20 |
32 |
108 |
77 |
2 |
| VCDI |
0 |
44 |
21 |
49 |
404 |
2029 |
9046 |
19751 |
|
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