Validation of sea ice concentration - Asian sector
Bulletin date: 2023-12-28
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-12-22:
| 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 |
49 |
411 |
11 |
10 |
0 |
0 |
0 |
0 |
| OW |
2 |
81 |
38 |
55 |
21 |
0 |
0 |
0 |
| VODI |
0 |
31 |
31 |
206 |
234 |
6 |
0 |
0 |
| ODI |
0 |
17 |
17 |
223 |
424 |
181 |
33 |
0 |
| CDI |
0 |
1 |
1 |
95 |
196 |
670 |
137 |
3 |
| VCDI |
0 |
0 |
0 |
72 |
144 |
1248 |
6493 |
21955 |
|
...date precedes bulletin
|
Date: 2023-12-24:
| 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 |
50 |
316 |
10 |
3 |
0 |
0 |
0 |
0 |
| OW |
3 |
59 |
21 |
25 |
7 |
0 |
0 |
0 |
| VODI |
2 |
37 |
27 |
140 |
205 |
16 |
0 |
0 |
| ODI |
0 |
28 |
17 |
127 |
403 |
176 |
32 |
0 |
| CDI |
0 |
5 |
6 |
78 |
293 |
409 |
411 |
6 |
| VCDI |
0 |
0 |
0 |
25 |
100 |
907 |
6225 |
22927 |
|
...date precedes bulletin
|
Date: 2023-12-26:
| 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 |
56 |
301 |
6 |
1 |
0 |
0 |
0 |
0 |
| OW |
4 |
51 |
24 |
15 |
0 |
0 |
0 |
0 |
| VODI |
6 |
17 |
33 |
125 |
19 |
1 |
0 |
0 |
| ODI |
4 |
13 |
8 |
165 |
306 |
81 |
0 |
0 |
| CDI |
0 |
2 |
0 |
74 |
523 |
342 |
7 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
119 |
1004 |
5811 |
23977 |
|
...date precedes bulletin
|
Date: 2023-12-28:
| 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 |
15 |
339 |
14 |
3 |
0 |
0 |
0 |
0 |
| OW |
1 |
95 |
13 |
15 |
0 |
0 |
0 |
0 |
| VODI |
0 |
63 |
21 |
54 |
26 |
0 |
0 |
0 |
| ODI |
0 |
27 |
11 |
54 |
333 |
120 |
0 |
0 |
| CDI |
0 |
26 |
10 |
80 |
375 |
277 |
12 |
3 |
| VCDI |
0 |
43 |
23 |
75 |
268 |
853 |
4886 |
24961 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16 |
348 |
13 |
3 |
0 |
0 |
0 |
0 |
| OW |
0 |
92 |
14 |
17 |
0 |
0 |
0 |
0 |
| VODI |
0 |
61 |
22 |
47 |
23 |
0 |
0 |
0 |
| ODI |
0 |
31 |
15 |
50 |
316 |
116 |
0 |
0 |
| CDI |
0 |
23 |
7 |
86 |
330 |
290 |
8 |
3 |
| VCDI |
0 |
38 |
21 |
78 |
333 |
844 |
4890 |
24961 |
|
Date: 2023-12-30:
| 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 |
19 |
307 |
15 |
2 |
0 |
0 |
0 |
0 |
| OW |
4 |
119 |
9 |
4 |
0 |
0 |
0 |
0 |
| VODI |
0 |
46 |
7 |
50 |
13 |
1 |
0 |
0 |
| ODI |
0 |
28 |
11 |
76 |
56 |
177 |
0 |
0 |
| CDI |
0 |
21 |
18 |
39 |
71 |
369 |
32 |
6 |
| VCDI |
0 |
20 |
27 |
120 |
219 |
1168 |
5213 |
24829 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
22 |
317 |
14 |
2 |
0 |
0 |
0 |
0 |
| OW |
1 |
109 |
9 |
1 |
0 |
0 |
0 |
0 |
| VODI |
0 |
50 |
12 |
50 |
14 |
0 |
0 |
0 |
| ODI |
0 |
28 |
10 |
69 |
53 |
142 |
0 |
0 |
| CDI |
0 |
20 |
19 |
53 |
67 |
363 |
32 |
6 |
| VCDI |
0 |
17 |
23 |
116 |
225 |
1210 |
5213 |
24829 |
|
Date: 2024-01-01:
| 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 |
13 |
319 |
13 |
15 |
1 |
0 |
0 |
0 |
| OW |
0 |
103 |
5 |
15 |
4 |
0 |
0 |
0 |
| VODI |
0 |
16 |
3 |
98 |
19 |
0 |
0 |
0 |
| ODI |
0 |
6 |
0 |
67 |
57 |
2 |
0 |
0 |
| CDI |
0 |
0 |
0 |
49 |
162 |
196 |
0 |
0 |
| VCDI |
0 |
0 |
0 |
4 |
196 |
1409 |
4350 |
25974 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13 |
272 |
13 |
15 |
1 |
0 |
0 |
0 |
| OW |
0 |
102 |
3 |
6 |
4 |
0 |
0 |
0 |
| VODI |
0 |
45 |
3 |
33 |
5 |
0 |
0 |
0 |
| ODI |
0 |
18 |
2 |
69 |
18 |
0 |
0 |
0 |
| CDI |
0 |
7 |
0 |
113 |
135 |
78 |
7 |
0 |
| VCDI |
0 |
0 |
0 |
12 |
276 |
1529 |
4343 |
25974 |
|
Date: 2024-01-03:
| 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 |
321 |
16 |
42 |
0 |
0 |
0 |
0 |
| OW |
0 |
56 |
6 |
19 |
5 |
0 |
0 |
0 |
| VODI |
0 |
37 |
16 |
37 |
33 |
0 |
0 |
0 |
| ODI |
0 |
11 |
14 |
24 |
52 |
14 |
0 |
0 |
| CDI |
0 |
20 |
9 |
73 |
144 |
184 |
21 |
2 |
| VCDI |
0 |
21 |
32 |
123 |
240 |
1506 |
6306 |
23712 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
248 |
15 |
31 |
0 |
0 |
0 |
0 |
| OW |
0 |
68 |
3 |
14 |
0 |
0 |
0 |
0 |
| VODI |
0 |
44 |
4 |
33 |
8 |
0 |
0 |
0 |
| ODI |
0 |
34 |
9 |
17 |
35 |
19 |
1 |
0 |
| CDI |
0 |
41 |
24 |
97 |
119 |
107 |
34 |
2 |
| VCDI |
0 |
31 |
38 |
126 |
312 |
1578 |
6292 |
23712 |
|
Date: 2024-01-05:
| 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 |
1 |
224 |
16 |
40 |
0 |
0 |
0 |
0 |
| OW |
0 |
58 |
8 |
12 |
6 |
0 |
0 |
0 |
| VODI |
0 |
16 |
23 |
45 |
17 |
0 |
0 |
0 |
| ODI |
0 |
1 |
8 |
50 |
26 |
1 |
0 |
0 |
| CDI |
0 |
9 |
10 |
56 |
147 |
154 |
42 |
22 |
| VCDI |
0 |
4 |
27 |
141 |
245 |
1050 |
7058 |
23579 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
1 |
205 |
28 |
42 |
0 |
0 |
0 |
0 |
| OW |
0 |
74 |
11 |
37 |
5 |
0 |
0 |
0 |
| VODI |
0 |
12 |
8 |
44 |
24 |
2 |
0 |
0 |
| ODI |
0 |
5 |
3 |
15 |
45 |
10 |
3 |
0 |
| CDI |
0 |
11 |
15 |
44 |
96 |
84 |
17 |
0 |
| VCDI |
0 |
5 |
27 |
162 |
271 |
1109 |
7080 |
23601 |
|
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