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 |
11 |
421 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
299 |
22 |
43 |
40 |
0 |
0 |
0 |
| VODI |
0 |
250 |
76 |
201 |
249 |
26 |
0 |
0 |
| ODI |
0 |
80 |
19 |
56 |
153 |
153 |
0 |
0 |
| CDI |
0 |
62 |
31 |
89 |
88 |
277 |
113 |
0 |
| VCDI |
0 |
99 |
31 |
94 |
237 |
1548 |
7022 |
20292 |
|
...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 |
4 |
394 |
9 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
190 |
18 |
16 |
31 |
6 |
0 |
0 |
| VODI |
0 |
230 |
79 |
198 |
240 |
147 |
0 |
0 |
| ODI |
0 |
118 |
48 |
65 |
103 |
221 |
20 |
0 |
| CDI |
0 |
49 |
38 |
118 |
127 |
156 |
164 |
0 |
| VCDI |
0 |
95 |
31 |
85 |
299 |
1547 |
6829 |
20407 |
|
...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 |
1 |
449 |
9 |
4 |
0 |
0 |
0 |
0 |
| OW |
0 |
187 |
41 |
63 |
2 |
0 |
0 |
0 |
| VODI |
0 |
153 |
109 |
263 |
130 |
7 |
0 |
0 |
| ODI |
0 |
20 |
14 |
110 |
259 |
218 |
24 |
0 |
| CDI |
0 |
19 |
13 |
53 |
240 |
398 |
93 |
0 |
| VCDI |
0 |
29 |
28 |
133 |
349 |
1629 |
7376 |
19659 |
|
...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 |
6 |
392 |
12 |
9 |
0 |
0 |
0 |
0 |
| OW |
0 |
111 |
14 |
58 |
19 |
0 |
0 |
0 |
| VODI |
0 |
95 |
66 |
167 |
191 |
14 |
0 |
0 |
| ODI |
0 |
20 |
24 |
230 |
308 |
238 |
34 |
0 |
| CDI |
0 |
18 |
7 |
55 |
201 |
435 |
142 |
0 |
| VCDI |
0 |
11 |
30 |
89 |
219 |
1207 |
7601 |
20059 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6 |
401 |
13 |
17 |
0 |
0 |
0 |
0 |
| OW |
0 |
109 |
7 |
50 |
21 |
0 |
0 |
0 |
| VODI |
0 |
83 |
68 |
134 |
139 |
10 |
0 |
0 |
| ODI |
0 |
23 |
25 |
216 |
333 |
204 |
25 |
0 |
| CDI |
0 |
21 |
9 |
96 |
217 |
464 |
168 |
0 |
| VCDI |
0 |
10 |
31 |
95 |
228 |
1216 |
7584 |
20059 |
|
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 |
16 |
289 |
2 |
1 |
0 |
0 |
0 |
0 |
| OW |
0 |
105 |
12 |
21 |
7 |
0 |
0 |
0 |
| VODI |
0 |
104 |
60 |
168 |
122 |
13 |
0 |
0 |
| ODI |
0 |
35 |
30 |
198 |
294 |
205 |
58 |
0 |
| CDI |
0 |
12 |
6 |
72 |
150 |
473 |
292 |
0 |
| VCDI |
0 |
8 |
7 |
34 |
129 |
1096 |
9555 |
18508 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16 |
321 |
6 |
4 |
1 |
0 |
0 |
0 |
| OW |
0 |
78 |
12 |
21 |
6 |
1 |
0 |
0 |
| VODI |
0 |
97 |
55 |
149 |
83 |
6 |
0 |
0 |
| ODI |
0 |
35 |
29 |
180 |
287 |
176 |
19 |
0 |
| CDI |
0 |
14 |
8 |
103 |
179 |
474 |
392 |
0 |
| VCDI |
0 |
8 |
7 |
37 |
146 |
1130 |
9494 |
18508 |
|
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 |
1 |
244 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
67 |
7 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
72 |
55 |
72 |
14 |
0 |
0 |
0 |
| ODI |
0 |
9 |
18 |
139 |
353 |
110 |
2 |
0 |
| CDI |
0 |
3 |
4 |
42 |
290 |
719 |
72 |
0 |
| VCDI |
0 |
2 |
2 |
13 |
20 |
712 |
7599 |
21441 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
1 |
247 |
2 |
1 |
0 |
0 |
0 |
0 |
| OW |
0 |
61 |
4 |
2 |
1 |
0 |
0 |
0 |
| VODI |
0 |
50 |
35 |
63 |
60 |
19 |
0 |
0 |
| ODI |
0 |
27 |
24 |
107 |
295 |
101 |
1 |
0 |
| CDI |
0 |
8 |
17 |
61 |
252 |
680 |
413 |
0 |
| VCDI |
0 |
4 |
4 |
32 |
69 |
741 |
7259 |
21441 |
|
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 |
22 |
261 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
91 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
98 |
23 |
22 |
3 |
1 |
0 |
0 |
| ODI |
0 |
42 |
24 |
92 |
303 |
61 |
2 |
0 |
| CDI |
0 |
19 |
29 |
126 |
386 |
197 |
12 |
0 |
| VCDI |
0 |
13 |
15 |
70 |
203 |
839 |
6871 |
22257 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
22 |
198 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
72 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
89 |
4 |
8 |
23 |
17 |
0 |
0 |
| ODI |
0 |
79 |
23 |
82 |
296 |
47 |
1 |
0 |
| CDI |
0 |
58 |
37 |
92 |
290 |
200 |
77 |
0 |
| VCDI |
0 |
28 |
27 |
128 |
286 |
834 |
6807 |
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 |
16 |
238 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
1 |
95 |
6 |
3 |
0 |
0 |
0 |
0 |
| VODI |
0 |
88 |
13 |
16 |
14 |
0 |
0 |
0 |
| ODI |
0 |
42 |
14 |
38 |
158 |
176 |
0 |
0 |
| CDI |
0 |
43 |
9 |
39 |
199 |
332 |
22 |
0 |
| VCDI |
0 |
49 |
39 |
92 |
307 |
887 |
6821 |
22325 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17 |
133 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
87 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
68 |
4 |
15 |
1 |
0 |
0 |
0 |
| ODI |
0 |
69 |
17 |
26 |
77 |
45 |
0 |
0 |
| CDI |
0 |
98 |
17 |
29 |
143 |
288 |
7 |
1 |
| VCDI |
0 |
100 |
43 |
118 |
457 |
1062 |
6836 |
22324 |
|
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