Validation of sea ice concentration - Asian sector
Bulletin date: 2023-04-27
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-04-21:
| 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 |
88 |
19 |
16 |
1 |
0 |
0 |
0 |
| OW |
0 |
2 |
8 |
44 |
15 |
0 |
0 |
0 |
| VODI |
0 |
1 |
0 |
43 |
37 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
20 |
49 |
10 |
3 |
0 |
| CDI |
0 |
0 |
0 |
17 |
95 |
52 |
53 |
8 |
| VCDI |
0 |
0 |
0 |
7 |
205 |
893 |
8450 |
21946 |
|
...date precedes bulletin
|
Date: 2023-04-23:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2023-04-25:
| 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 |
83 |
33 |
71 |
1 |
0 |
0 |
0 |
| OW |
0 |
5 |
7 |
45 |
6 |
0 |
0 |
0 |
| VODI |
0 |
21 |
3 |
58 |
29 |
5 |
0 |
0 |
| ODI |
0 |
21 |
5 |
47 |
44 |
35 |
2 |
0 |
| CDI |
0 |
6 |
17 |
64 |
72 |
166 |
55 |
0 |
| VCDI |
0 |
0 |
2 |
107 |
293 |
2012 |
11496 |
17271 |
|
...date precedes bulletin
|
Date: 2023-04-27:
| 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 |
93 |
32 |
60 |
0 |
0 |
0 |
0 |
| OW |
0 |
17 |
16 |
31 |
5 |
0 |
0 |
0 |
| VODI |
0 |
69 |
15 |
23 |
22 |
3 |
0 |
0 |
| ODI |
0 |
50 |
1 |
7 |
28 |
45 |
6 |
0 |
| CDI |
0 |
50 |
8 |
13 |
67 |
191 |
64 |
0 |
| VCDI |
0 |
38 |
18 |
69 |
332 |
2236 |
9052 |
19421 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
98 |
42 |
67 |
0 |
0 |
0 |
0 |
| OW |
0 |
32 |
9 |
24 |
6 |
0 |
0 |
0 |
| VODI |
0 |
64 |
12 |
22 |
22 |
9 |
0 |
0 |
| ODI |
0 |
42 |
1 |
9 |
25 |
53 |
7 |
0 |
| CDI |
0 |
56 |
9 |
13 |
65 |
215 |
63 |
0 |
| VCDI |
0 |
25 |
17 |
68 |
336 |
2198 |
9052 |
19421 |
|
Date: 2023-04-29:
| 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 |
93 |
33 |
25 |
0 |
0 |
0 |
0 |
| OW |
0 |
42 |
9 |
49 |
7 |
0 |
0 |
0 |
| VODI |
0 |
57 |
11 |
32 |
22 |
2 |
0 |
0 |
| ODI |
0 |
49 |
2 |
6 |
10 |
24 |
1 |
0 |
| CDI |
0 |
53 |
7 |
7 |
65 |
104 |
84 |
0 |
| VCDI |
0 |
34 |
17 |
55 |
272 |
1691 |
9102 |
20117 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
100 |
35 |
37 |
0 |
0 |
0 |
0 |
| OW |
0 |
52 |
9 |
33 |
5 |
0 |
0 |
0 |
| VODI |
0 |
51 |
10 |
37 |
15 |
4 |
1 |
0 |
| ODI |
0 |
46 |
2 |
7 |
26 |
23 |
0 |
0 |
| CDI |
0 |
55 |
6 |
5 |
74 |
131 |
89 |
0 |
| VCDI |
0 |
24 |
17 |
55 |
256 |
1663 |
9097 |
20117 |
|
Date: 2023-05-01:
| 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 |
221 |
48 |
29 |
0 |
0 |
0 |
0 |
| OW |
0 |
57 |
13 |
42 |
5 |
0 |
0 |
0 |
| VODI |
0 |
27 |
7 |
38 |
30 |
0 |
0 |
0 |
| ODI |
0 |
22 |
11 |
14 |
37 |
22 |
1 |
0 |
| CDI |
0 |
0 |
6 |
48 |
146 |
318 |
40 |
7 |
| VCDI |
0 |
0 |
0 |
0 |
20 |
1159 |
8476 |
21238 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
121 |
36 |
36 |
1 |
0 |
0 |
0 |
| OW |
0 |
62 |
14 |
25 |
12 |
0 |
0 |
0 |
| VODI |
0 |
38 |
11 |
37 |
34 |
2 |
0 |
0 |
| ODI |
0 |
27 |
1 |
13 |
10 |
4 |
2 |
0 |
| CDI |
0 |
36 |
3 |
7 |
22 |
94 |
72 |
13 |
| VCDI |
0 |
43 |
20 |
53 |
159 |
1399 |
8443 |
21232 |
|
Date: 2023-05-03:
| 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 |
225 |
45 |
33 |
0 |
0 |
0 |
0 |
| OW |
0 |
39 |
14 |
22 |
9 |
0 |
0 |
0 |
| VODI |
0 |
37 |
3 |
11 |
38 |
6 |
0 |
0 |
| ODI |
0 |
17 |
11 |
8 |
54 |
10 |
7 |
0 |
| CDI |
0 |
6 |
12 |
28 |
97 |
128 |
84 |
17 |
| VCDI |
0 |
0 |
0 |
29 |
185 |
1864 |
9949 |
19094 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
119 |
24 |
23 |
1 |
0 |
0 |
0 |
| OW |
0 |
46 |
14 |
33 |
10 |
0 |
0 |
0 |
| VODI |
0 |
45 |
21 |
6 |
19 |
9 |
0 |
0 |
| ODI |
0 |
28 |
3 |
7 |
12 |
6 |
0 |
0 |
| CDI |
0 |
43 |
2 |
10 |
43 |
65 |
51 |
9 |
| VCDI |
0 |
43 |
21 |
52 |
298 |
1928 |
9989 |
19102 |
|
Date: 2023-05-05:
| 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 |
156 |
46 |
37 |
0 |
0 |
0 |
0 |
| OW |
0 |
43 |
10 |
50 |
17 |
0 |
0 |
0 |
| VODI |
0 |
29 |
5 |
10 |
11 |
12 |
0 |
0 |
| ODI |
0 |
17 |
2 |
14 |
12 |
39 |
8 |
0 |
| CDI |
0 |
9 |
12 |
18 |
68 |
213 |
92 |
3 |
| VCDI |
0 |
0 |
2 |
33 |
125 |
2021 |
11485 |
17483 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
94 |
17 |
6 |
0 |
0 |
0 |
0 |
| OW |
0 |
35 |
26 |
29 |
1 |
0 |
0 |
0 |
| VODI |
0 |
39 |
13 |
54 |
28 |
9 |
0 |
0 |
| ODI |
0 |
10 |
1 |
5 |
3 |
19 |
7 |
10 |
| CDI |
0 |
29 |
1 |
6 |
16 |
147 |
164 |
49 |
| VCDI |
0 |
47 |
19 |
62 |
185 |
2110 |
11414 |
17427 |
|
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