Validation of sea ice concentration - Asian sector
Bulletin date: 2025-01-02
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2024-12-27:
| 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 |
85 |
611 |
3 |
3 |
0 |
0 |
0 |
0 |
| OW |
10 |
256 |
9 |
14 |
3 |
0 |
0 |
0 |
| VODI |
1 |
91 |
34 |
34 |
21 |
8 |
0 |
0 |
| ODI |
0 |
42 |
9 |
51 |
98 |
49 |
2 |
0 |
| CDI |
0 |
51 |
9 |
25 |
98 |
121 |
12 |
0 |
| VCDI |
0 |
136 |
34 |
74 |
153 |
522 |
9158 |
20255 |
|
...date precedes bulletin
|
Date: 2024-12-29:
| 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 |
61 |
580 |
16 |
5 |
1 |
0 |
0 |
0 |
| OW |
0 |
222 |
24 |
26 |
5 |
0 |
0 |
0 |
| VODI |
0 |
93 |
26 |
52 |
29 |
2 |
0 |
0 |
| ODI |
0 |
40 |
10 |
25 |
75 |
76 |
22 |
0 |
| CDI |
0 |
42 |
9 |
29 |
70 |
219 |
38 |
0 |
| VCDI |
0 |
143 |
35 |
87 |
100 |
460 |
8578 |
20882 |
|
...date precedes bulletin
|
Date: 2024-12-31:
| 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 |
105 |
670 |
2 |
1 |
0 |
0 |
0 |
0 |
| OW |
1 |
251 |
23 |
10 |
1 |
0 |
0 |
0 |
| VODI |
0 |
97 |
31 |
42 |
5 |
0 |
0 |
0 |
| ODI |
0 |
47 |
19 |
47 |
27 |
8 |
0 |
0 |
| CDI |
0 |
69 |
26 |
67 |
131 |
104 |
36 |
0 |
| VCDI |
0 |
11 |
17 |
51 |
262 |
723 |
10668 |
18530 |
|
...date precedes bulletin
|
Date: 2025-01-02:
| 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 |
184 |
686 |
3 |
2 |
0 |
0 |
0 |
0 |
| OW |
4 |
245 |
6 |
3 |
1 |
0 |
0 |
0 |
| VODI |
0 |
131 |
16 |
24 |
3 |
2 |
0 |
0 |
| ODI |
0 |
77 |
11 |
25 |
22 |
20 |
0 |
0 |
| CDI |
0 |
92 |
20 |
61 |
107 |
84 |
5 |
15 |
| VCDI |
0 |
159 |
65 |
213 |
422 |
1454 |
11313 |
16607 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
188 |
776 |
3 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
207 |
11 |
6 |
1 |
0 |
0 |
0 |
| VODI |
0 |
159 |
18 |
29 |
4 |
2 |
0 |
0 |
| ODI |
0 |
67 |
26 |
38 |
30 |
17 |
0 |
0 |
| CDI |
0 |
67 |
25 |
139 |
182 |
110 |
2 |
36 |
| VCDI |
0 |
114 |
38 |
116 |
338 |
1431 |
11316 |
16586 |
|
Date: 2025-01-04:
| 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 |
223 |
571 |
8 |
4 |
0 |
0 |
0 |
0 |
| OW |
6 |
203 |
18 |
22 |
0 |
0 |
0 |
0 |
| VODI |
0 |
114 |
26 |
56 |
10 |
2 |
0 |
0 |
| ODI |
0 |
43 |
15 |
50 |
49 |
18 |
0 |
0 |
| CDI |
0 |
66 |
3 |
33 |
114 |
143 |
35 |
0 |
| VCDI |
0 |
200 |
41 |
122 |
351 |
846 |
8965 |
19725 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
229 |
676 |
13 |
10 |
0 |
0 |
0 |
0 |
| OW |
0 |
156 |
24 |
32 |
0 |
0 |
0 |
0 |
| VODI |
0 |
128 |
32 |
72 |
20 |
2 |
0 |
0 |
| ODI |
0 |
45 |
9 |
52 |
83 |
33 |
0 |
0 |
| CDI |
0 |
50 |
4 |
41 |
184 |
205 |
52 |
0 |
| VCDI |
0 |
142 |
29 |
80 |
237 |
769 |
8948 |
19725 |
|
Date: 2025-01-06:
| 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 |
121 |
604 |
4 |
2 |
0 |
0 |
0 |
0 |
| OW |
0 |
194 |
19 |
12 |
3 |
0 |
0 |
0 |
| VODI |
0 |
104 |
43 |
53 |
22 |
0 |
0 |
0 |
| ODI |
0 |
11 |
14 |
59 |
70 |
8 |
0 |
0 |
| CDI |
0 |
30 |
13 |
44 |
72 |
124 |
36 |
0 |
| VCDI |
0 |
14 |
8 |
66 |
138 |
714 |
7767 |
21713 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
119 |
595 |
14 |
11 |
6 |
0 |
0 |
0 |
| OW |
2 |
148 |
26 |
31 |
20 |
0 |
0 |
0 |
| VODI |
0 |
101 |
23 |
57 |
47 |
11 |
0 |
0 |
| ODI |
0 |
68 |
20 |
42 |
53 |
42 |
3 |
0 |
| CDI |
0 |
24 |
7 |
34 |
55 |
202 |
148 |
1 |
| VCDI |
0 |
21 |
11 |
61 |
124 |
591 |
7652 |
21712 |
|
Date: 2025-01-08:
| 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 |
550 |
15 |
11 |
0 |
0 |
0 |
0 |
| OW |
0 |
81 |
50 |
65 |
14 |
1 |
0 |
0 |
| VODI |
0 |
38 |
17 |
67 |
39 |
2 |
0 |
0 |
| ODI |
0 |
21 |
10 |
18 |
67 |
29 |
0 |
0 |
| CDI |
0 |
23 |
12 |
37 |
64 |
202 |
35 |
15 |
| VCDI |
0 |
2 |
2 |
13 |
37 |
508 |
8212 |
21784 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
41 |
474 |
24 |
30 |
14 |
1 |
0 |
0 |
| OW |
0 |
120 |
26 |
38 |
18 |
10 |
0 |
0 |
| VODI |
0 |
65 |
31 |
65 |
57 |
26 |
3 |
0 |
| ODI |
0 |
29 |
8 |
29 |
46 |
52 |
8 |
0 |
| CDI |
0 |
27 |
14 |
32 |
45 |
181 |
148 |
10 |
| VCDI |
0 |
0 |
3 |
17 |
41 |
472 |
8088 |
21789 |
|
Date: 2025-01-10:
| 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 |
468 |
4 |
6 |
0 |
0 |
0 |
0 |
| OW |
0 |
143 |
14 |
27 |
26 |
0 |
0 |
0 |
| VODI |
0 |
89 |
18 |
19 |
34 |
11 |
0 |
0 |
| ODI |
0 |
38 |
17 |
40 |
34 |
40 |
4 |
0 |
| CDI |
0 |
39 |
24 |
59 |
74 |
186 |
18 |
0 |
| VCDI |
0 |
9 |
8 |
23 |
42 |
481 |
6742 |
23302 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
43 |
402 |
9 |
18 |
16 |
1 |
0 |
0 |
| OW |
0 |
173 |
12 |
26 |
34 |
20 |
4 |
0 |
| VODI |
0 |
144 |
22 |
30 |
27 |
45 |
0 |
0 |
| ODI |
0 |
40 |
16 |
34 |
47 |
65 |
3 |
0 |
| CDI |
0 |
20 |
15 |
31 |
31 |
177 |
104 |
2 |
| VCDI |
0 |
7 |
11 |
35 |
55 |
410 |
6653 |
23300 |
|
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