Validation of sea ice concentration - Asian sector
Bulletin date: 2024-04-25
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2024-04-19:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
1 |
2 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
3 |
7 |
4 |
0 |
0 |
| CDI |
0 |
0 |
0 |
10 |
32 |
64 |
210 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
42 |
314 |
9101 |
22292 |
|
...date precedes bulletin
|
Date: 2024-04-21:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
2 |
3 |
3 |
0 |
0 |
0 |
0 |
| ODI |
0 |
1 |
2 |
10 |
3 |
1 |
0 |
0 |
| CDI |
0 |
2 |
2 |
23 |
33 |
78 |
157 |
0 |
| VCDI |
0 |
0 |
0 |
4 |
67 |
408 |
10144 |
21139 |
|
...date precedes bulletin
|
Date: 2024-04-23:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
3 |
3 |
4 |
3 |
1 |
0 |
0 |
| ODI |
0 |
4 |
5 |
8 |
8 |
7 |
0 |
0 |
| CDI |
0 |
2 |
3 |
13 |
23 |
46 |
3 |
0 |
| VCDI |
0 |
8 |
5 |
12 |
71 |
721 |
13332 |
17797 |
|
...date precedes bulletin
|
Date: 2024-04-25:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
3 |
3 |
4 |
2 |
7 |
0 |
0 |
| ODI |
0 |
12 |
4 |
7 |
10 |
8 |
7 |
0 |
| CDI |
0 |
18 |
13 |
30 |
29 |
12 |
31 |
0 |
| VCDI |
0 |
24 |
13 |
89 |
211 |
525 |
13713 |
17307 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
1 |
3 |
5 |
1 |
7 |
0 |
0 |
| ODI |
0 |
11 |
3 |
8 |
9 |
8 |
7 |
0 |
| CDI |
0 |
25 |
15 |
28 |
34 |
12 |
37 |
0 |
| VCDI |
0 |
20 |
12 |
89 |
208 |
525 |
13707 |
17307 |
|
Date: 2024-04-27:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
2 |
1 |
0 |
0 |
| VODI |
0 |
0 |
2 |
5 |
14 |
2 |
0 |
0 |
| ODI |
0 |
14 |
12 |
12 |
12 |
1 |
0 |
0 |
| CDI |
0 |
29 |
13 |
22 |
32 |
9 |
46 |
0 |
| VCDI |
0 |
10 |
16 |
61 |
163 |
477 |
11598 |
19529 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
| VODI |
0 |
0 |
3 |
5 |
11 |
3 |
0 |
0 |
| ODI |
0 |
10 |
9 |
10 |
16 |
1 |
0 |
0 |
| CDI |
0 |
39 |
17 |
26 |
43 |
14 |
60 |
0 |
| VCDI |
0 |
4 |
14 |
59 |
152 |
472 |
11584 |
19529 |
|
Date: 2024-04-29:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
1 |
0 |
4 |
1 |
0 |
0 |
0 |
| VODI |
0 |
27 |
10 |
21 |
14 |
4 |
0 |
0 |
| ODI |
0 |
18 |
15 |
30 |
29 |
4 |
1 |
0 |
| CDI |
0 |
2 |
6 |
28 |
128 |
54 |
62 |
0 |
| VCDI |
0 |
2 |
5 |
11 |
80 |
899 |
14124 |
16502 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
1 |
0 |
2 |
0 |
0 |
0 |
0 |
| VODI |
0 |
6 |
1 |
12 |
7 |
0 |
0 |
0 |
| ODI |
0 |
14 |
4 |
13 |
19 |
8 |
8 |
0 |
| CDI |
0 |
28 |
21 |
27 |
49 |
24 |
82 |
0 |
| VCDI |
0 |
1 |
10 |
40 |
177 |
929 |
14097 |
16502 |
|
Date: 2024-05-01:
| 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 |
2 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
3 |
7 |
5 |
0 |
0 |
0 |
0 |
| VODI |
0 |
23 |
11 |
20 |
15 |
1 |
1 |
0 |
| ODI |
0 |
15 |
13 |
10 |
29 |
5 |
4 |
0 |
| CDI |
0 |
1 |
1 |
28 |
182 |
151 |
88 |
0 |
| VCDI |
0 |
0 |
0 |
12 |
237 |
1382 |
13816 |
16020 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
4 |
2 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
2 |
6 |
11 |
1 |
0 |
1 |
0 |
| ODI |
0 |
11 |
4 |
11 |
25 |
4 |
7 |
0 |
| CDI |
0 |
9 |
10 |
26 |
121 |
90 |
127 |
0 |
| VCDI |
0 |
18 |
10 |
27 |
316 |
1445 |
13774 |
16020 |
|
Date: 2024-05-03:
| 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 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
2 |
5 |
14 |
1 |
0 |
0 |
0 |
| VODI |
0 |
2 |
9 |
30 |
40 |
0 |
1 |
0 |
| ODI |
0 |
1 |
2 |
27 |
25 |
8 |
10 |
0 |
| CDI |
0 |
0 |
5 |
45 |
174 |
196 |
170 |
1 |
| VCDI |
0 |
0 |
0 |
56 |
324 |
1186 |
15519 |
14227 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
2 |
4 |
2 |
1 |
0 |
0 |
0 |
| VODI |
0 |
1 |
2 |
10 |
10 |
1 |
0 |
0 |
| ODI |
0 |
2 |
7 |
19 |
35 |
5 |
12 |
4 |
| CDI |
0 |
0 |
8 |
53 |
137 |
131 |
221 |
11 |
| VCDI |
0 |
0 |
1 |
88 |
381 |
1253 |
15467 |
14213 |
|
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