Validation of sea ice concentration - Asian sector
Bulletin date: 2023-04-27
Data source: OSI SAF N.H. AMSR 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 |
100 |
16 |
6 |
2 |
0 |
0 |
0 |
| OW |
0 |
13 |
10 |
23 |
21 |
2 |
0 |
0 |
| VODI |
0 |
15 |
6 |
17 |
40 |
3 |
0 |
0 |
| ODI |
0 |
6 |
8 |
10 |
35 |
19 |
4 |
0 |
| CDI |
0 |
1 |
6 |
14 |
77 |
77 |
50 |
0 |
| VCDI |
0 |
0 |
5 |
34 |
248 |
1185 |
12559 |
17470 |
|
...date precedes bulletin
|
Date: 2023-04-23:
| 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 |
85 |
28 |
6 |
0 |
0 |
0 |
0 |
| OW |
0 |
9 |
16 |
32 |
21 |
1 |
0 |
0 |
| VODI |
0 |
10 |
8 |
27 |
37 |
7 |
0 |
0 |
| ODI |
0 |
9 |
8 |
33 |
41 |
33 |
11 |
0 |
| CDI |
0 |
13 |
11 |
40 |
112 |
106 |
102 |
0 |
| VCDI |
0 |
6 |
20 |
104 |
332 |
1657 |
15015 |
14142 |
|
...date precedes bulletin
|
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 |
121 |
28 |
39 |
0 |
0 |
0 |
0 |
| OW |
0 |
21 |
7 |
26 |
9 |
0 |
0 |
0 |
| VODI |
0 |
31 |
22 |
39 |
22 |
2 |
0 |
0 |
| ODI |
0 |
28 |
15 |
48 |
31 |
28 |
4 |
0 |
| CDI |
0 |
42 |
11 |
70 |
70 |
101 |
86 |
0 |
| VCDI |
0 |
15 |
26 |
99 |
335 |
1854 |
12949 |
15903 |
|
...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 |
139 |
20 |
23 |
3 |
0 |
0 |
0 |
| OW |
0 |
32 |
14 |
18 |
5 |
0 |
0 |
0 |
| VODI |
0 |
74 |
13 |
22 |
21 |
2 |
0 |
0 |
| ODI |
0 |
41 |
11 |
14 |
27 |
35 |
9 |
0 |
| CDI |
0 |
65 |
10 |
28 |
73 |
129 |
88 |
0 |
| VCDI |
0 |
82 |
27 |
76 |
303 |
1921 |
11697 |
17060 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
148 |
25 |
30 |
4 |
0 |
0 |
0 |
| OW |
0 |
42 |
11 |
14 |
4 |
0 |
0 |
0 |
| VODI |
0 |
67 |
13 |
21 |
22 |
6 |
0 |
0 |
| ODI |
0 |
37 |
8 |
11 |
32 |
34 |
15 |
0 |
| CDI |
0 |
72 |
7 |
22 |
74 |
149 |
97 |
0 |
| VCDI |
0 |
67 |
31 |
83 |
296 |
1898 |
11682 |
17060 |
|
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 |
118 |
18 |
13 |
2 |
0 |
0 |
0 |
| OW |
0 |
46 |
20 |
32 |
9 |
0 |
0 |
0 |
| VODI |
0 |
61 |
22 |
19 |
14 |
7 |
1 |
0 |
| ODI |
0 |
52 |
0 |
6 |
18 |
15 |
1 |
0 |
| CDI |
0 |
64 |
2 |
10 |
84 |
73 |
87 |
0 |
| VCDI |
0 |
79 |
15 |
38 |
286 |
1464 |
10754 |
18652 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
127 |
23 |
18 |
4 |
0 |
0 |
0 |
| OW |
0 |
52 |
19 |
20 |
8 |
0 |
0 |
0 |
| VODI |
0 |
58 |
18 |
26 |
9 |
6 |
1 |
0 |
| ODI |
0 |
50 |
0 |
8 |
30 |
15 |
1 |
0 |
| CDI |
0 |
64 |
2 |
11 |
95 |
91 |
97 |
0 |
| VCDI |
0 |
69 |
15 |
35 |
267 |
1447 |
10744 |
18652 |
|
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 |
241 |
24 |
18 |
15 |
0 |
0 |
0 |
| OW |
0 |
82 |
10 |
17 |
7 |
1 |
0 |
0 |
| VODI |
0 |
48 |
6 |
20 |
17 |
9 |
2 |
0 |
| ODI |
0 |
42 |
2 |
9 |
31 |
17 |
6 |
0 |
| CDI |
0 |
27 |
11 |
42 |
127 |
285 |
66 |
7 |
| VCDI |
0 |
0 |
0 |
1 |
119 |
1089 |
11547 |
18137 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
140 |
21 |
18 |
15 |
0 |
0 |
0 |
| OW |
0 |
71 |
9 |
17 |
10 |
5 |
1 |
0 |
| VODI |
0 |
64 |
8 |
16 |
19 |
10 |
5 |
0 |
| ODI |
0 |
32 |
3 |
8 |
4 |
8 |
2 |
0 |
| CDI |
0 |
43 |
1 |
7 |
36 |
82 |
68 |
10 |
| VCDI |
0 |
90 |
11 |
41 |
232 |
1296 |
11545 |
18134 |
|
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 |
245 |
27 |
25 |
6 |
0 |
0 |
0 |
| OW |
0 |
60 |
4 |
13 |
5 |
2 |
0 |
0 |
| VODI |
0 |
45 |
5 |
15 |
17 |
6 |
7 |
0 |
| ODI |
0 |
32 |
3 |
13 |
38 |
14 |
7 |
0 |
| CDI |
0 |
31 |
7 |
17 |
88 |
142 |
86 |
1 |
| VCDI |
0 |
10 |
6 |
31 |
241 |
1900 |
12404 |
16529 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
136 |
15 |
16 |
0 |
0 |
0 |
0 |
| OW |
0 |
65 |
13 |
15 |
6 |
3 |
1 |
0 |
| VODI |
0 |
52 |
5 |
15 |
13 |
6 |
9 |
0 |
| ODI |
0 |
35 |
3 |
6 |
7 |
4 |
1 |
0 |
| CDI |
0 |
48 |
6 |
15 |
35 |
61 |
58 |
0 |
| VCDI |
0 |
87 |
10 |
47 |
334 |
1990 |
12435 |
16530 |
|
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 |
196 |
22 |
21 |
0 |
0 |
0 |
0 |
| OW |
0 |
58 |
23 |
24 |
9 |
5 |
1 |
0 |
| VODI |
0 |
36 |
2 |
9 |
7 |
3 |
10 |
0 |
| ODI |
0 |
19 |
7 |
15 |
21 |
17 |
13 |
0 |
| CDI |
0 |
23 |
6 |
26 |
84 |
185 |
89 |
2 |
| VCDI |
0 |
14 |
6 |
32 |
150 |
1999 |
13751 |
15197 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
109 |
7 |
1 |
0 |
0 |
0 |
0 |
| OW |
0 |
63 |
15 |
13 |
0 |
0 |
0 |
0 |
| VODI |
0 |
55 |
20 |
35 |
15 |
9 |
9 |
0 |
| ODI |
0 |
11 |
0 |
6 |
2 |
15 |
11 |
10 |
| CDI |
0 |
31 |
1 |
12 |
55 |
94 |
170 |
49 |
| VCDI |
0 |
77 |
23 |
60 |
199 |
2091 |
13674 |
15140 |
|
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