Validation of sea ice concentration - Asian sector
Bulletin date: 2023-12-21
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-12-15:
| 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 |
7 |
496 |
20 |
62 |
118 |
5 |
0 |
0 |
| OW |
0 |
278 |
15 |
27 |
83 |
53 |
0 |
0 |
| VODI |
0 |
253 |
62 |
104 |
80 |
58 |
0 |
0 |
| ODI |
0 |
86 |
38 |
108 |
77 |
72 |
0 |
0 |
| CDI |
0 |
33 |
21 |
86 |
141 |
156 |
12 |
2 |
| VCDI |
0 |
69 |
23 |
96 |
268 |
1660 |
7123 |
20290 |
|
...date precedes bulletin
|
Date: 2023-12-17:
| 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 |
2 |
404 |
0 |
1 |
19 |
58 |
0 |
0 |
| OW |
0 |
178 |
37 |
75 |
66 |
53 |
0 |
0 |
| VODI |
0 |
296 |
65 |
59 |
85 |
107 |
0 |
0 |
| ODI |
0 |
113 |
64 |
134 |
102 |
100 |
18 |
0 |
| CDI |
0 |
34 |
32 |
125 |
166 |
116 |
89 |
5 |
| VCDI |
0 |
53 |
25 |
88 |
362 |
1643 |
6906 |
20402 |
|
...date precedes bulletin
|
Date: 2023-12-19:
| 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 |
0 |
490 |
14 |
15 |
0 |
0 |
0 |
0 |
| OW |
0 |
194 |
45 |
60 |
19 |
6 |
0 |
0 |
| VODI |
0 |
134 |
103 |
261 |
103 |
31 |
0 |
0 |
| ODI |
0 |
13 |
22 |
120 |
215 |
113 |
1 |
0 |
| CDI |
0 |
13 |
3 |
40 |
273 |
410 |
79 |
1 |
| VCDI |
0 |
14 |
27 |
130 |
370 |
1692 |
7413 |
19658 |
|
...date precedes bulletin
|
Date: 2023-12-21:
| 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 |
385 |
11 |
22 |
7 |
0 |
0 |
0 |
| OW |
0 |
74 |
21 |
49 |
27 |
0 |
0 |
0 |
| VODI |
0 |
145 |
62 |
201 |
159 |
9 |
0 |
0 |
| ODI |
0 |
28 |
25 |
215 |
272 |
74 |
7 |
0 |
| CDI |
0 |
15 |
8 |
29 |
240 |
450 |
97 |
12 |
| VCDI |
0 |
3 |
26 |
92 |
233 |
1361 |
7673 |
20047 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
3 |
391 |
15 |
25 |
8 |
0 |
0 |
0 |
| OW |
0 |
65 |
21 |
52 |
26 |
0 |
0 |
0 |
| VODI |
0 |
131 |
49 |
206 |
191 |
14 |
0 |
0 |
| ODI |
0 |
42 |
34 |
185 |
224 |
84 |
6 |
0 |
| CDI |
0 |
19 |
7 |
43 |
221 |
378 |
84 |
13 |
| VCDI |
0 |
2 |
27 |
97 |
268 |
1418 |
7687 |
20046 |
|
Date: 2023-12-23:
| 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 |
11 |
333 |
11 |
11 |
1 |
0 |
0 |
0 |
| OW |
0 |
52 |
6 |
14 |
33 |
0 |
0 |
0 |
| VODI |
0 |
74 |
38 |
116 |
105 |
17 |
0 |
0 |
| ODI |
0 |
77 |
47 |
250 |
224 |
126 |
1 |
0 |
| CDI |
0 |
17 |
6 |
62 |
170 |
422 |
220 |
21 |
| VCDI |
0 |
5 |
9 |
41 |
169 |
1222 |
9684 |
18487 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11 |
342 |
11 |
11 |
4 |
0 |
0 |
0 |
| OW |
0 |
56 |
7 |
21 |
38 |
1 |
0 |
0 |
| VODI |
0 |
50 |
32 |
93 |
146 |
36 |
0 |
0 |
| ODI |
0 |
86 |
45 |
230 |
133 |
132 |
5 |
0 |
| CDI |
0 |
22 |
14 |
101 |
196 |
315 |
213 |
22 |
| VCDI |
0 |
2 |
8 |
38 |
185 |
1303 |
9687 |
18486 |
|
Date: 2023-12-25:
| 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 |
303 |
12 |
4 |
0 |
0 |
0 |
0 |
| OW |
0 |
27 |
16 |
18 |
6 |
0 |
0 |
0 |
| VODI |
0 |
58 |
36 |
55 |
25 |
10 |
0 |
0 |
| ODI |
0 |
8 |
21 |
124 |
381 |
93 |
0 |
0 |
| CDI |
0 |
2 |
1 |
62 |
238 |
601 |
67 |
0 |
| VCDI |
0 |
0 |
0 |
3 |
27 |
837 |
7606 |
21441 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
307 |
15 |
13 |
1 |
0 |
0 |
0 |
| OW |
0 |
18 |
10 |
7 |
14 |
1 |
0 |
0 |
| VODI |
0 |
21 |
26 |
45 |
113 |
24 |
0 |
0 |
| ODI |
0 |
9 |
10 |
75 |
215 |
133 |
0 |
0 |
| CDI |
0 |
38 |
18 |
85 |
196 |
323 |
115 |
1 |
| VCDI |
0 |
5 |
7 |
41 |
138 |
1060 |
7558 |
21440 |
|
Date: 2023-12-27:
| 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 |
15 |
308 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
58 |
4 |
1 |
0 |
0 |
0 |
0 |
| VODI |
0 |
46 |
26 |
60 |
9 |
0 |
0 |
0 |
| ODI |
0 |
36 |
21 |
110 |
255 |
39 |
1 |
0 |
| CDI |
0 |
44 |
18 |
70 |
421 |
230 |
47 |
0 |
| VCDI |
0 |
39 |
22 |
69 |
210 |
829 |
6837 |
22257 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15 |
299 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
39 |
2 |
2 |
0 |
0 |
0 |
0 |
| VODI |
0 |
35 |
7 |
30 |
29 |
3 |
0 |
0 |
| ODI |
0 |
37 |
23 |
122 |
210 |
30 |
0 |
0 |
| CDI |
0 |
23 |
16 |
27 |
254 |
153 |
28 |
0 |
| VCDI |
0 |
98 |
43 |
129 |
402 |
912 |
6857 |
22257 |
|
Date: 2023-12-29:
| 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 |
11 |
292 |
1 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
50 |
5 |
1 |
0 |
0 |
0 |
0 |
| VODI |
0 |
63 |
9 |
15 |
12 |
0 |
0 |
0 |
| ODI |
0 |
44 |
15 |
42 |
213 |
30 |
0 |
0 |
| CDI |
0 |
34 |
6 |
33 |
230 |
314 |
61 |
0 |
| VCDI |
0 |
78 |
45 |
97 |
223 |
1051 |
6782 |
22325 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11 |
251 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
36 |
4 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
43 |
4 |
9 |
0 |
0 |
0 |
0 |
| ODI |
0 |
29 |
8 |
28 |
63 |
1 |
1 |
0 |
| CDI |
0 |
35 |
3 |
25 |
255 |
97 |
53 |
34 |
| VCDI |
0 |
167 |
62 |
126 |
360 |
1297 |
6789 |
22291 |
|
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