Validation of sea ice concentration - Asian sector
Bulletin date: 2025-01-02
Data source: OSI SAF N.H. multi-product 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 |
73 |
682 |
36 |
27 |
0 |
0 |
0 |
0 |
| OW |
5 |
197 |
50 |
70 |
0 |
0 |
0 |
0 |
| VODI |
1 |
55 |
15 |
112 |
30 |
0 |
0 |
0 |
| ODI |
0 |
24 |
7 |
67 |
144 |
27 |
2 |
0 |
| CDI |
0 |
30 |
8 |
35 |
173 |
93 |
8 |
0 |
| VCDI |
0 |
48 |
28 |
128 |
220 |
647 |
6640 |
23414 |
|
...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 |
93 |
626 |
26 |
38 |
0 |
0 |
0 |
0 |
| OW |
1 |
195 |
23 |
72 |
9 |
0 |
0 |
0 |
| VODI |
0 |
70 |
8 |
110 |
36 |
0 |
0 |
0 |
| ODI |
0 |
29 |
3 |
47 |
101 |
85 |
0 |
0 |
| CDI |
0 |
42 |
4 |
24 |
108 |
212 |
20 |
15 |
| VCDI |
0 |
97 |
36 |
102 |
164 |
534 |
6553 |
23613 |
|
...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 |
96 |
742 |
34 |
22 |
0 |
0 |
0 |
0 |
| OW |
1 |
183 |
63 |
66 |
0 |
0 |
0 |
0 |
| VODI |
0 |
46 |
11 |
126 |
14 |
0 |
0 |
0 |
| ODI |
0 |
34 |
4 |
80 |
35 |
12 |
0 |
0 |
| CDI |
0 |
17 |
17 |
116 |
197 |
80 |
23 |
7 |
| VCDI |
0 |
0 |
0 |
41 |
327 |
805 |
6513 |
23384 |
|
...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 |
161 |
825 |
16 |
5 |
0 |
0 |
0 |
0 |
| OW |
4 |
240 |
27 |
17 |
0 |
0 |
0 |
0 |
| VODI |
0 |
91 |
37 |
54 |
9 |
0 |
0 |
0 |
| ODI |
0 |
40 |
26 |
59 |
32 |
13 |
0 |
0 |
| CDI |
0 |
41 |
25 |
99 |
156 |
84 |
4 |
6 |
| VCDI |
0 |
53 |
26 |
267 |
573 |
1641 |
8889 |
19576 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
165 |
931 |
21 |
2 |
0 |
0 |
0 |
0 |
| OW |
0 |
171 |
44 |
28 |
0 |
0 |
0 |
0 |
| VODI |
0 |
89 |
48 |
78 |
9 |
2 |
0 |
0 |
| ODI |
0 |
28 |
18 |
90 |
41 |
17 |
0 |
0 |
| CDI |
0 |
36 |
7 |
146 |
267 |
102 |
5 |
20 |
| VCDI |
0 |
35 |
19 |
157 |
453 |
1617 |
8888 |
19562 |
|
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 |
197 |
674 |
22 |
39 |
0 |
0 |
0 |
0 |
| OW |
5 |
169 |
46 |
54 |
1 |
0 |
0 |
0 |
| VODI |
0 |
84 |
29 |
95 |
24 |
0 |
0 |
0 |
| ODI |
0 |
37 |
7 |
62 |
68 |
5 |
0 |
0 |
| CDI |
0 |
57 |
9 |
44 |
162 |
120 |
18 |
12 |
| VCDI |
0 |
97 |
44 |
150 |
526 |
1009 |
6682 |
22548 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
202 |
774 |
39 |
56 |
0 |
0 |
0 |
0 |
| OW |
0 |
117 |
42 |
65 |
7 |
0 |
0 |
0 |
| VODI |
0 |
96 |
34 |
107 |
36 |
1 |
0 |
0 |
| ODI |
0 |
38 |
5 |
70 |
99 |
15 |
0 |
0 |
| CDI |
0 |
33 |
8 |
48 |
272 |
166 |
20 |
25 |
| VCDI |
0 |
60 |
29 |
98 |
367 |
952 |
6680 |
22535 |
|
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 |
132 |
638 |
33 |
40 |
0 |
0 |
0 |
0 |
| OW |
0 |
111 |
66 |
67 |
1 |
0 |
0 |
0 |
| VODI |
0 |
59 |
16 |
141 |
28 |
0 |
0 |
0 |
| ODI |
0 |
5 |
3 |
72 |
101 |
1 |
0 |
0 |
| CDI |
0 |
9 |
13 |
58 |
140 |
109 |
12 |
2 |
| VCDI |
0 |
0 |
1 |
53 |
212 |
966 |
6837 |
23170 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
130 |
605 |
47 |
78 |
2 |
0 |
0 |
0 |
| OW |
2 |
93 |
41 |
83 |
30 |
0 |
0 |
0 |
| VODI |
0 |
57 |
13 |
121 |
63 |
5 |
0 |
0 |
| ODI |
0 |
57 |
17 |
52 |
84 |
33 |
0 |
0 |
| CDI |
0 |
10 |
8 |
38 |
113 |
277 |
46 |
14 |
| VCDI |
0 |
0 |
6 |
59 |
190 |
761 |
6803 |
23158 |
|
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 |
56 |
574 |
50 |
38 |
0 |
0 |
0 |
0 |
| OW |
2 |
56 |
28 |
134 |
12 |
0 |
0 |
0 |
| VODI |
0 |
24 |
6 |
95 |
57 |
0 |
0 |
0 |
| ODI |
0 |
15 |
5 |
38 |
87 |
11 |
0 |
0 |
| CDI |
0 |
6 |
8 |
76 |
120 |
191 |
4 |
19 |
| VCDI |
0 |
0 |
0 |
5 |
60 |
593 |
6081 |
24645 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
55 |
505 |
40 |
77 |
12 |
0 |
0 |
0 |
| OW |
3 |
109 |
28 |
57 |
33 |
7 |
0 |
0 |
| VODI |
0 |
30 |
13 |
120 |
69 |
29 |
0 |
0 |
| ODI |
0 |
20 |
5 |
55 |
53 |
53 |
3 |
0 |
| CDI |
0 |
11 |
11 |
63 |
76 |
204 |
102 |
11 |
| VCDI |
0 |
0 |
0 |
14 |
93 |
502 |
5980 |
24653 |
|
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 |
50 |
524 |
21 |
15 |
0 |
0 |
0 |
0 |
| OW |
0 |
111 |
36 |
57 |
28 |
0 |
0 |
0 |
| VODI |
0 |
39 |
25 |
76 |
44 |
9 |
0 |
0 |
| ODI |
0 |
18 |
9 |
67 |
58 |
30 |
1 |
0 |
| CDI |
0 |
16 |
7 |
96 |
147 |
160 |
12 |
0 |
| VCDI |
0 |
0 |
2 |
23 |
85 |
634 |
3783 |
26913 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
49 |
458 |
25 |
36 |
18 |
1 |
0 |
0 |
| OW |
1 |
161 |
20 |
50 |
42 |
21 |
0 |
0 |
| VODI |
0 |
71 |
42 |
86 |
46 |
44 |
0 |
0 |
| ODI |
0 |
13 |
8 |
67 |
65 |
59 |
3 |
0 |
| CDI |
0 |
5 |
3 |
51 |
85 |
196 |
60 |
4 |
| VCDI |
0 |
0 |
2 |
44 |
106 |
512 |
3733 |
26909 |
|
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