Validation of sea ice concentration - Asian sector
Bulletin date: 2024-04-25
Data source: OSI SAF N.H. multi-product 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 |
41 |
63 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
6 |
36 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
4 |
0 |
0 |
3 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
14 |
0 |
2 |
0 |
| CDI |
0 |
0 |
0 |
0 |
61 |
50 |
201 |
3 |
| VCDI |
0 |
0 |
0 |
0 |
41 |
158 |
4916 |
27497 |
|
...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 |
59 |
56 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
7 |
28 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
6 |
2 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
9 |
7 |
0 |
0 |
0 |
| CDI |
0 |
0 |
0 |
15 |
54 |
83 |
158 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
73 |
130 |
7666 |
24743 |
|
...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 |
23 |
91 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
2 |
34 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
5 |
8 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
10 |
15 |
9 |
0 |
0 |
| CDI |
0 |
0 |
0 |
7 |
32 |
64 |
7 |
3 |
| VCDI |
0 |
0 |
0 |
0 |
77 |
666 |
7731 |
24312 |
|
...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 |
102 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
2 |
44 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
2 |
0 |
9 |
5 |
2 |
0 |
0 |
| ODI |
0 |
0 |
0 |
24 |
16 |
1 |
2 |
0 |
| CDI |
0 |
0 |
0 |
65 |
53 |
2 |
15 |
13 |
| VCDI |
0 |
0 |
0 |
76 |
261 |
349 |
6275 |
25778 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
103 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
2 |
42 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
3 |
0 |
9 |
4 |
2 |
0 |
0 |
| ODI |
0 |
0 |
0 |
22 |
16 |
1 |
2 |
0 |
| CDI |
0 |
0 |
0 |
72 |
57 |
3 |
14 |
19 |
| VCDI |
0 |
0 |
0 |
71 |
258 |
348 |
6276 |
25772 |
|
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 |
13 |
94 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
4 |
39 |
0 |
0 |
1 |
1 |
0 |
0 |
| VODI |
0 |
0 |
0 |
7 |
12 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
42 |
11 |
0 |
0 |
0 |
| CDI |
0 |
0 |
0 |
67 |
45 |
0 |
12 |
36 |
| VCDI |
0 |
0 |
0 |
49 |
221 |
382 |
4290 |
27770 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13 |
92 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
4 |
37 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
4 |
0 |
8 |
10 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
32 |
16 |
0 |
0 |
0 |
| CDI |
0 |
0 |
0 |
86 |
57 |
1 |
12 |
50 |
| VCDI |
0 |
0 |
0 |
39 |
207 |
381 |
4290 |
27756 |
|
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 |
66 |
72 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
4 |
8 |
0 |
1 |
5 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
60 |
16 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
49 |
45 |
0 |
1 |
0 |
| CDI |
0 |
0 |
0 |
18 |
160 |
39 |
49 |
19 |
| VCDI |
0 |
0 |
0 |
0 |
65 |
622 |
8729 |
23067 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
60 |
68 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
10 |
12 |
0 |
1 |
2 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
14 |
14 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
30 |
20 |
1 |
4 |
4 |
| CDI |
0 |
0 |
0 |
64 |
73 |
12 |
63 |
31 |
| VCDI |
0 |
0 |
0 |
19 |
182 |
649 |
8712 |
23051 |
|
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 |
97 |
53 |
0 |
2 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
9 |
6 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
52 |
17 |
1 |
1 |
0 |
| ODI |
0 |
0 |
0 |
56 |
12 |
9 |
3 |
0 |
| CDI |
0 |
0 |
0 |
15 |
171 |
214 |
73 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
31 |
1608 |
13186 |
17480 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
97 |
51 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
2 |
0 |
6 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
10 |
11 |
4 |
0 |
0 |
| ODI |
0 |
0 |
0 |
28 |
19 |
8 |
6 |
0 |
| CDI |
0 |
0 |
0 |
52 |
108 |
126 |
119 |
0 |
| VCDI |
0 |
0 |
0 |
38 |
99 |
1694 |
13138 |
17480 |
|
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 |
22 |
127 |
0 |
1 |
1 |
0 |
0 |
0 |
| OW |
0 |
1 |
0 |
13 |
11 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
32 |
47 |
4 |
0 |
0 |
| ODI |
0 |
0 |
0 |
4 |
55 |
11 |
7 |
0 |
| CDI |
0 |
0 |
0 |
2 |
196 |
286 |
140 |
1 |
| VCDI |
0 |
0 |
0 |
0 |
139 |
1605 |
12497 |
17894 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
22 |
123 |
0 |
1 |
0 |
0 |
0 |
0 |
| OW |
0 |
5 |
0 |
5 |
4 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
9 |
13 |
8 |
0 |
0 |
| ODI |
0 |
0 |
0 |
26 |
33 |
15 |
8 |
6 |
| CDI |
0 |
0 |
0 |
8 |
189 |
175 |
219 |
15 |
| VCDI |
0 |
0 |
0 |
3 |
210 |
1708 |
12417 |
17874 |
|
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