Validation of sea ice concentration - Asian sector
Bulletin date: 2023-04-13
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
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 |
34 |
9 |
14 |
33 |
9 |
0 |
0 |
| OW |
0 |
5 |
7 |
9 |
20 |
23 |
0 |
0 |
| VODI |
0 |
1 |
0 |
21 |
23 |
31 |
4 |
0 |
| ODI |
0 |
0 |
0 |
10 |
34 |
25 |
9 |
0 |
| CDI |
0 |
0 |
0 |
0 |
50 |
75 |
32 |
2 |
| VCDI |
0 |
0 |
0 |
0 |
29 |
649 |
6083 |
24841 |
|
...date precedes bulletin
|
Date: 2023-04-09:
| 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 |
48 |
5 |
12 |
32 |
6 |
0 |
0 |
| OW |
0 |
5 |
13 |
14 |
32 |
16 |
0 |
0 |
| VODI |
0 |
0 |
0 |
25 |
27 |
31 |
0 |
0 |
| ODI |
0 |
0 |
0 |
19 |
22 |
28 |
1 |
0 |
| CDI |
0 |
0 |
0 |
3 |
46 |
56 |
53 |
21 |
| VCDI |
0 |
0 |
0 |
0 |
24 |
729 |
6417 |
24397 |
|
...date precedes bulletin
|
Date: 2023-04-11:
| 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 |
15 |
8 |
21 |
27 |
0 |
0 |
0 |
| OW |
0 |
1 |
1 |
18 |
27 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
5 |
57 |
18 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
50 |
36 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
27 |
131 |
22 |
27 |
| VCDI |
0 |
0 |
0 |
0 |
9 |
412 |
5721 |
25449 |
|
...date precedes bulletin
|
Date: 2023-04-13:
| 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 |
3 |
8 |
15 |
22 |
4 |
0 |
0 |
| OW |
0 |
0 |
1 |
19 |
11 |
17 |
0 |
0 |
| VODI |
0 |
0 |
0 |
4 |
25 |
39 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
27 |
43 |
2 |
0 |
| CDI |
0 |
0 |
0 |
0 |
34 |
124 |
14 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
289 |
5256 |
26124 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
3 |
9 |
20 |
21 |
5 |
0 |
0 |
| OW |
0 |
0 |
0 |
17 |
10 |
17 |
0 |
0 |
| VODI |
0 |
0 |
0 |
1 |
26 |
41 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
24 |
42 |
1 |
0 |
| CDI |
0 |
0 |
0 |
0 |
37 |
116 |
16 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
295 |
5255 |
26124 |
|
Date: 2023-04-15:
| 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 |
29 |
8 |
9 |
17 |
0 |
0 |
0 |
| OW |
0 |
3 |
5 |
12 |
11 |
10 |
0 |
0 |
| VODI |
0 |
0 |
0 |
26 |
21 |
26 |
0 |
0 |
| ODI |
0 |
0 |
0 |
7 |
26 |
36 |
5 |
0 |
| CDI |
0 |
0 |
0 |
2 |
33 |
61 |
9 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
10 |
145 |
3174 |
28397 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
30 |
8 |
9 |
16 |
0 |
0 |
0 |
| OW |
0 |
2 |
5 |
14 |
11 |
13 |
0 |
0 |
| VODI |
0 |
0 |
0 |
20 |
19 |
24 |
1 |
0 |
| ODI |
0 |
0 |
0 |
11 |
22 |
31 |
3 |
0 |
| CDI |
0 |
0 |
0 |
2 |
32 |
60 |
10 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
18 |
150 |
3174 |
28397 |
|
Date: 2023-04-17:
| 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 |
34 |
15 |
24 |
6 |
0 |
0 |
0 |
| OW |
0 |
2 |
1 |
29 |
9 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
25 |
50 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
4 |
64 |
12 |
0 |
0 |
| CDI |
0 |
0 |
0 |
1 |
89 |
65 |
6 |
1 |
| VCDI |
0 |
0 |
0 |
0 |
21 |
336 |
5034 |
26254 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
34 |
13 |
22 |
9 |
0 |
0 |
0 |
| OW |
0 |
2 |
3 |
17 |
15 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
29 |
38 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
14 |
50 |
9 |
0 |
0 |
| CDI |
0 |
0 |
0 |
1 |
93 |
29 |
0 |
1 |
| VCDI |
0 |
0 |
0 |
0 |
34 |
375 |
5040 |
26254 |
|
Date: 2023-04-19:
| 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 |
57 |
30 |
21 |
1 |
0 |
0 |
0 |
| OW |
0 |
2 |
2 |
40 |
6 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
37 |
43 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
10 |
57 |
5 |
0 |
0 |
| CDI |
0 |
0 |
0 |
7 |
90 |
13 |
0 |
10 |
| VCDI |
0 |
0 |
0 |
0 |
82 |
637 |
3661 |
27271 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
52 |
15 |
15 |
1 |
0 |
0 |
0 |
| OW |
0 |
7 |
13 |
17 |
12 |
0 |
0 |
0 |
| VODI |
0 |
0 |
4 |
36 |
27 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
33 |
52 |
0 |
0 |
0 |
| CDI |
0 |
0 |
0 |
13 |
111 |
9 |
0 |
15 |
| VCDI |
0 |
0 |
0 |
1 |
76 |
646 |
3661 |
27266 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
55 |
4 |
7 |
0 |
0 |
0 |
0 |
| OW |
0 |
18 |
4 |
13 |
10 |
0 |
0 |
0 |
| VODI |
0 |
17 |
10 |
30 |
32 |
0 |
0 |
0 |
| ODI |
0 |
1 |
9 |
32 |
46 |
3 |
0 |
0 |
| CDI |
0 |
0 |
0 |
57 |
103 |
36 |
43 |
8 |
| VCDI |
0 |
0 |
0 |
8 |
211 |
916 |
8463 |
21946 |
|
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