Validation of sea ice concentration - Asian sector
Bulletin date: 2023-02-23
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-02-17:
| 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 |
111 |
289 |
1 |
1 |
0 |
0 |
0 |
0 |
| OW |
2 |
56 |
4 |
5 |
0 |
0 |
0 |
0 |
| VODI |
0 |
45 |
3 |
69 |
34 |
0 |
0 |
0 |
| ODI |
0 |
46 |
1 |
66 |
81 |
1 |
0 |
0 |
| CDI |
0 |
56 |
1 |
49 |
86 |
46 |
14 |
16 |
| VCDI |
0 |
237 |
24 |
195 |
429 |
1151 |
5132 |
23831 |
|
...date precedes bulletin
|
Date: 2023-02-19:
| 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 |
19 |
365 |
2 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
65 |
2 |
18 |
0 |
0 |
0 |
0 |
| VODI |
0 |
87 |
10 |
100 |
4 |
0 |
0 |
0 |
| ODI |
0 |
76 |
5 |
92 |
67 |
12 |
0 |
0 |
| CDI |
0 |
85 |
4 |
59 |
149 |
96 |
57 |
12 |
| VCDI |
0 |
257 |
21 |
239 |
617 |
1916 |
7576 |
20070 |
|
...date precedes bulletin
|
Date: 2023-02-21:
| 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 |
3 |
381 |
5 |
11 |
0 |
0 |
0 |
0 |
| OW |
0 |
41 |
1 |
40 |
2 |
0 |
0 |
0 |
| VODI |
0 |
56 |
4 |
101 |
41 |
0 |
0 |
0 |
| ODI |
0 |
76 |
6 |
107 |
127 |
22 |
0 |
0 |
| CDI |
0 |
64 |
2 |
64 |
183 |
99 |
14 |
15 |
| VCDI |
0 |
50 |
7 |
151 |
466 |
938 |
8276 |
20729 |
|
...date precedes bulletin
|
Date: 2023-02-23:
| 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 |
324 |
11 |
32 |
9 |
0 |
0 |
0 |
| OW |
0 |
40 |
1 |
17 |
0 |
0 |
0 |
0 |
| VODI |
0 |
44 |
2 |
36 |
11 |
0 |
0 |
0 |
| ODI |
0 |
43 |
2 |
27 |
78 |
19 |
0 |
0 |
| CDI |
0 |
73 |
3 |
15 |
185 |
157 |
14 |
7 |
| VCDI |
0 |
124 |
15 |
108 |
239 |
845 |
6202 |
23399 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
328 |
11 |
36 |
9 |
0 |
0 |
0 |
| OW |
0 |
38 |
1 |
16 |
0 |
0 |
0 |
0 |
| VODI |
0 |
40 |
2 |
25 |
10 |
0 |
0 |
0 |
| ODI |
0 |
38 |
2 |
31 |
40 |
8 |
0 |
0 |
| CDI |
0 |
59 |
3 |
17 |
180 |
128 |
11 |
7 |
| VCDI |
0 |
145 |
15 |
110 |
283 |
885 |
6205 |
23399 |
|
Date: 2023-02-25:
| 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 |
330 |
11 |
32 |
0 |
0 |
0 |
0 |
| OW |
0 |
34 |
0 |
20 |
2 |
0 |
0 |
0 |
| VODI |
0 |
46 |
0 |
7 |
13 |
0 |
0 |
0 |
| ODI |
0 |
46 |
1 |
6 |
28 |
17 |
0 |
0 |
| CDI |
0 |
60 |
2 |
12 |
35 |
147 |
26 |
22 |
| VCDI |
0 |
234 |
17 |
112 |
214 |
826 |
6617 |
23165 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
330 |
11 |
34 |
0 |
0 |
0 |
0 |
| OW |
0 |
27 |
0 |
18 |
4 |
0 |
0 |
0 |
| VODI |
0 |
50 |
0 |
7 |
11 |
0 |
0 |
0 |
| ODI |
0 |
40 |
1 |
6 |
19 |
17 |
0 |
0 |
| CDI |
0 |
58 |
2 |
9 |
25 |
131 |
26 |
24 |
| VCDI |
0 |
245 |
17 |
115 |
233 |
842 |
6617 |
23163 |
|
Date: 2023-02-27:
| 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 |
86 |
398 |
3 |
19 |
0 |
0 |
0 |
0 |
| OW |
1 |
134 |
2 |
10 |
7 |
0 |
0 |
0 |
| VODI |
0 |
96 |
1 |
9 |
15 |
0 |
0 |
0 |
| ODI |
0 |
63 |
3 |
25 |
35 |
7 |
3 |
0 |
| CDI |
0 |
89 |
2 |
16 |
29 |
137 |
39 |
2 |
| VCDI |
0 |
87 |
17 |
127 |
285 |
838 |
7472 |
22025 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
80 |
273 |
2 |
21 |
1 |
0 |
0 |
0 |
| OW |
7 |
49 |
0 |
7 |
9 |
0 |
0 |
0 |
| VODI |
0 |
68 |
1 |
4 |
13 |
0 |
0 |
0 |
| ODI |
0 |
57 |
1 |
5 |
14 |
3 |
4 |
0 |
| CDI |
0 |
79 |
1 |
8 |
26 |
93 |
34 |
33 |
| VCDI |
0 |
341 |
23 |
161 |
308 |
886 |
7476 |
21994 |
|
Date: 2023-03-01:
| 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 |
93 |
282 |
3 |
15 |
0 |
0 |
0 |
0 |
| OW |
3 |
79 |
1 |
15 |
1 |
0 |
0 |
0 |
| VODI |
0 |
246 |
2 |
12 |
8 |
0 |
0 |
0 |
| ODI |
0 |
74 |
3 |
29 |
15 |
13 |
0 |
0 |
| CDI |
0 |
70 |
6 |
22 |
52 |
57 |
13 |
24 |
| VCDI |
0 |
134 |
13 |
115 |
265 |
870 |
6624 |
22923 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
82 |
261 |
3 |
22 |
0 |
0 |
0 |
0 |
| OW |
13 |
43 |
0 |
9 |
3 |
0 |
0 |
0 |
| VODI |
1 |
77 |
0 |
7 |
11 |
0 |
0 |
0 |
| ODI |
0 |
74 |
0 |
4 |
14 |
13 |
0 |
0 |
| CDI |
0 |
82 |
1 |
7 |
27 |
119 |
27 |
0 |
| VCDI |
0 |
348 |
24 |
159 |
286 |
808 |
6610 |
22947 |
|
Date: 2023-03-03:
| 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 |
305 |
8 |
33 |
1 |
0 |
0 |
0 |
| OW |
0 |
36 |
0 |
17 |
5 |
0 |
0 |
0 |
| VODI |
0 |
67 |
1 |
11 |
9 |
0 |
0 |
0 |
| ODI |
0 |
171 |
4 |
13 |
12 |
0 |
1 |
0 |
| CDI |
0 |
89 |
6 |
41 |
30 |
26 |
75 |
15 |
| VCDI |
0 |
52 |
11 |
129 |
239 |
536 |
7565 |
22574 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
285 |
6 |
26 |
1 |
0 |
0 |
0 |
| OW |
0 |
38 |
2 |
20 |
5 |
0 |
0 |
0 |
| VODI |
0 |
42 |
0 |
6 |
12 |
0 |
0 |
0 |
| ODI |
0 |
55 |
0 |
15 |
10 |
9 |
2 |
18 |
| CDI |
0 |
76 |
3 |
13 |
28 |
26 |
36 |
39 |
| VCDI |
0 |
224 |
19 |
164 |
240 |
527 |
7603 |
22532 |
|
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