Validation of sea ice concentration - Asian sector
Bulletin date: 2025-01-30
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-01-24:
| 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 |
418 |
17 |
8 |
0 |
0 |
0 |
0 |
| OW |
0 |
56 |
13 |
26 |
0 |
0 |
0 |
0 |
| VODI |
0 |
26 |
10 |
41 |
28 |
0 |
0 |
0 |
| ODI |
0 |
15 |
7 |
27 |
77 |
33 |
2 |
0 |
| CDI |
0 |
8 |
8 |
53 |
105 |
203 |
130 |
14 |
| VCDI |
0 |
0 |
0 |
4 |
79 |
299 |
4600 |
26789 |
|
...date precedes bulletin
|
Date: 2025-01-26:
| 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 |
374 |
18 |
13 |
0 |
0 |
0 |
0 |
| OW |
0 |
52 |
6 |
26 |
0 |
0 |
0 |
0 |
| VODI |
0 |
32 |
6 |
41 |
9 |
14 |
0 |
0 |
| ODI |
0 |
21 |
6 |
34 |
49 |
62 |
0 |
0 |
| CDI |
0 |
8 |
17 |
63 |
141 |
146 |
138 |
10 |
| VCDI |
0 |
0 |
0 |
15 |
158 |
895 |
9812 |
20930 |
|
...date precedes bulletin
|
Date: 2025-01-28:
| 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 |
388 |
17 |
10 |
0 |
0 |
0 |
0 |
| OW |
0 |
112 |
27 |
28 |
0 |
0 |
0 |
0 |
| VODI |
0 |
21 |
15 |
58 |
6 |
0 |
0 |
0 |
| ODI |
0 |
4 |
8 |
44 |
55 |
43 |
0 |
0 |
| CDI |
0 |
0 |
1 |
40 |
147 |
173 |
41 |
5 |
| VCDI |
0 |
0 |
0 |
6 |
126 |
834 |
9162 |
21725 |
|
...date precedes bulletin
|
Date: 2025-01-30:
| 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 |
367 |
19 |
12 |
0 |
0 |
0 |
0 |
| OW |
0 |
122 |
18 |
28 |
0 |
0 |
0 |
0 |
| VODI |
0 |
52 |
9 |
62 |
10 |
1 |
0 |
0 |
| ODI |
0 |
5 |
8 |
64 |
40 |
38 |
9 |
0 |
| CDI |
0 |
0 |
1 |
39 |
131 |
84 |
107 |
29 |
| VCDI |
0 |
0 |
0 |
2 |
79 |
386 |
5152 |
26222 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
375 |
18 |
16 |
0 |
0 |
0 |
0 |
| OW |
0 |
115 |
19 |
25 |
0 |
0 |
0 |
0 |
| VODI |
0 |
50 |
9 |
64 |
9 |
2 |
0 |
0 |
| ODI |
0 |
6 |
8 |
63 |
43 |
38 |
21 |
2 |
| CDI |
0 |
0 |
1 |
37 |
127 |
89 |
110 |
28 |
| VCDI |
0 |
0 |
0 |
2 |
81 |
380 |
5137 |
26221 |
|
Date: 2025-02-01:
| 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 |
369 |
7 |
7 |
0 |
0 |
0 |
0 |
| OW |
0 |
132 |
26 |
31 |
0 |
0 |
0 |
0 |
| VODI |
0 |
101 |
8 |
35 |
4 |
8 |
0 |
0 |
| ODI |
0 |
26 |
15 |
39 |
26 |
30 |
5 |
0 |
| CDI |
0 |
3 |
19 |
53 |
89 |
75 |
91 |
3 |
| VCDI |
0 |
0 |
0 |
51 |
151 |
473 |
8322 |
22897 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
374 |
8 |
7 |
0 |
0 |
0 |
0 |
| OW |
0 |
126 |
25 |
30 |
0 |
0 |
0 |
0 |
| VODI |
0 |
95 |
6 |
39 |
6 |
12 |
0 |
0 |
| ODI |
0 |
30 |
15 |
35 |
18 |
32 |
14 |
0 |
| CDI |
0 |
6 |
21 |
57 |
100 |
79 |
95 |
7 |
| VCDI |
0 |
0 |
0 |
48 |
146 |
463 |
8309 |
22893 |
|
Date: 2025-02-03:
| 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 |
486 |
4 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
207 |
27 |
11 |
3 |
0 |
0 |
0 |
| VODI |
0 |
36 |
35 |
37 |
18 |
0 |
0 |
0 |
| ODI |
0 |
12 |
11 |
54 |
65 |
4 |
1 |
1 |
| CDI |
0 |
12 |
1 |
48 |
172 |
78 |
37 |
16 |
| VCDI |
0 |
6 |
0 |
6 |
191 |
939 |
9366 |
21212 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
452 |
2 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
115 |
9 |
1 |
0 |
0 |
0 |
0 |
| VODI |
0 |
99 |
23 |
14 |
6 |
0 |
0 |
0 |
| ODI |
0 |
41 |
22 |
25 |
42 |
8 |
28 |
0 |
| CDI |
0 |
28 |
20 |
80 |
140 |
59 |
135 |
6 |
| VCDI |
0 |
24 |
2 |
36 |
261 |
954 |
9241 |
21223 |
|
Date: 2025-02-05:
| 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 |
490 |
6 |
4 |
0 |
0 |
0 |
0 |
| OW |
0 |
171 |
25 |
18 |
3 |
0 |
0 |
0 |
| VODI |
0 |
58 |
28 |
40 |
12 |
0 |
0 |
0 |
| ODI |
0 |
8 |
15 |
72 |
28 |
16 |
3 |
0 |
| CDI |
0 |
0 |
2 |
85 |
160 |
93 |
71 |
8 |
| VCDI |
0 |
0 |
0 |
16 |
195 |
1024 |
8173 |
22272 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
448 |
1 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
129 |
9 |
6 |
1 |
0 |
0 |
0 |
| VODI |
0 |
92 |
23 |
17 |
10 |
0 |
0 |
0 |
| ODI |
0 |
39 |
27 |
43 |
20 |
26 |
27 |
0 |
| CDI |
0 |
17 |
15 |
114 |
115 |
68 |
124 |
6 |
| VCDI |
0 |
2 |
1 |
55 |
252 |
1039 |
8096 |
22274 |
|
Date: 2025-02-07:
| 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 |
43 |
481 |
9 |
7 |
0 |
0 |
0 |
0 |
| OW |
0 |
175 |
13 |
25 |
0 |
0 |
0 |
0 |
| VODI |
0 |
108 |
17 |
37 |
21 |
4 |
0 |
0 |
| ODI |
0 |
49 |
13 |
60 |
58 |
29 |
0 |
0 |
| CDI |
0 |
14 |
25 |
124 |
182 |
147 |
28 |
6 |
| VCDI |
0 |
0 |
1 |
73 |
426 |
1379 |
8731 |
20811 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
43 |
460 |
10 |
7 |
0 |
0 |
0 |
0 |
| OW |
0 |
130 |
10 |
24 |
11 |
0 |
0 |
0 |
| VODI |
0 |
88 |
10 |
51 |
44 |
13 |
0 |
0 |
| ODI |
0 |
75 |
7 |
48 |
73 |
56 |
12 |
0 |
| CDI |
0 |
66 |
26 |
91 |
145 |
185 |
65 |
16 |
| VCDI |
0 |
8 |
15 |
105 |
414 |
1305 |
8682 |
20801 |
|
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