Validation of sea ice concentration - Asian sector
Bulletin date: 2023-12-21
Data source: OSI SAF N.H. multi-product 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 |
154 |
423 |
13 |
1 |
0 |
0 |
0 |
0 |
| OW |
5 |
247 |
36 |
109 |
31 |
0 |
0 |
0 |
| VODI |
0 |
181 |
69 |
335 |
222 |
23 |
0 |
0 |
| ODI |
0 |
51 |
24 |
80 |
203 |
113 |
0 |
0 |
| CDI |
0 |
32 |
26 |
107 |
146 |
337 |
32 |
0 |
| VCDI |
0 |
35 |
24 |
109 |
322 |
1723 |
5847 |
22036 |
|
...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 |
133 |
390 |
16 |
9 |
0 |
0 |
0 |
0 |
| OW |
12 |
128 |
43 |
49 |
42 |
6 |
0 |
0 |
| VODI |
10 |
115 |
80 |
320 |
289 |
116 |
0 |
0 |
| ODI |
0 |
35 |
47 |
151 |
133 |
228 |
5 |
0 |
| CDI |
0 |
16 |
13 |
149 |
192 |
189 |
132 |
2 |
| VCDI |
0 |
28 |
23 |
104 |
312 |
2003 |
5822 |
21754 |
|
...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 |
91 |
481 |
10 |
12 |
0 |
0 |
0 |
0 |
| OW |
7 |
114 |
59 |
126 |
7 |
0 |
0 |
0 |
| VODI |
5 |
44 |
50 |
452 |
143 |
0 |
0 |
0 |
| ODI |
1 |
6 |
4 |
122 |
370 |
163 |
6 |
0 |
| CDI |
0 |
7 |
9 |
43 |
308 |
460 |
36 |
0 |
| VCDI |
0 |
0 |
9 |
82 |
397 |
2034 |
6606 |
20832 |
|
...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 |
78 |
430 |
22 |
14 |
0 |
0 |
0 |
0 |
| OW |
5 |
77 |
28 |
78 |
30 |
0 |
0 |
0 |
| VODI |
4 |
54 |
26 |
235 |
244 |
7 |
0 |
0 |
| ODI |
0 |
17 |
7 |
249 |
389 |
192 |
24 |
0 |
| CDI |
0 |
1 |
7 |
80 |
217 |
537 |
71 |
0 |
| VCDI |
0 |
0 |
3 |
92 |
176 |
1555 |
6739 |
21408 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
77 |
440 |
23 |
21 |
0 |
0 |
0 |
0 |
| OW |
5 |
68 |
28 |
79 |
22 |
0 |
0 |
0 |
| VODI |
5 |
50 |
22 |
195 |
189 |
7 |
0 |
0 |
| ODI |
0 |
20 |
10 |
227 |
427 |
156 |
15 |
0 |
| CDI |
0 |
1 |
6 |
129 |
235 |
559 |
96 |
0 |
| VCDI |
0 |
0 |
4 |
97 |
183 |
1569 |
6723 |
21408 |
|
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 |
38 |
368 |
17 |
5 |
0 |
0 |
0 |
0 |
| OW |
1 |
72 |
24 |
51 |
14 |
0 |
0 |
0 |
| VODI |
0 |
29 |
28 |
234 |
202 |
3 |
0 |
0 |
| ODI |
0 |
17 |
16 |
190 |
417 |
169 |
45 |
0 |
| CDI |
0 |
5 |
1 |
100 |
196 |
507 |
224 |
7 |
| VCDI |
0 |
0 |
0 |
28 |
153 |
1424 |
6692 |
21819 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
38 |
387 |
26 |
16 |
1 |
0 |
0 |
0 |
| OW |
1 |
49 |
21 |
52 |
10 |
0 |
0 |
0 |
| VODI |
0 |
31 |
21 |
215 |
151 |
1 |
0 |
0 |
| ODI |
0 |
19 |
15 |
171 |
405 |
134 |
16 |
0 |
| CDI |
0 |
5 |
3 |
117 |
243 |
515 |
315 |
6 |
| VCDI |
0 |
0 |
0 |
37 |
172 |
1453 |
6630 |
21820 |
|
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 |
52 |
303 |
5 |
1 |
0 |
0 |
0 |
0 |
| OW |
3 |
53 |
9 |
27 |
0 |
0 |
0 |
0 |
| VODI |
2 |
26 |
2 |
184 |
30 |
0 |
0 |
0 |
| ODI |
0 |
9 |
0 |
101 |
505 |
29 |
2 |
0 |
| CDI |
0 |
0 |
0 |
14 |
388 |
756 |
27 |
0 |
| VCDI |
0 |
0 |
0 |
4 |
42 |
654 |
6013 |
23855 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
49 |
293 |
10 |
5 |
0 |
0 |
0 |
0 |
| OW |
3 |
40 |
2 |
34 |
1 |
0 |
0 |
0 |
| VODI |
3 |
28 |
4 |
124 |
82 |
19 |
0 |
0 |
| ODI |
2 |
23 |
0 |
96 |
380 |
88 |
2 |
0 |
| CDI |
0 |
7 |
0 |
59 |
374 |
641 |
406 |
0 |
| VCDI |
0 |
0 |
0 |
13 |
128 |
691 |
5634 |
23855 |
|
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 |
19 |
362 |
2 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
89 |
16 |
7 |
0 |
0 |
0 |
0 |
| VODI |
0 |
62 |
34 |
58 |
16 |
0 |
0 |
0 |
| ODI |
0 |
35 |
14 |
89 |
392 |
50 |
3 |
0 |
| CDI |
0 |
10 |
14 |
111 |
501 |
153 |
10 |
0 |
| VCDI |
0 |
0 |
8 |
67 |
276 |
919 |
5468 |
24311 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
19 |
294 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
81 |
5 |
2 |
0 |
0 |
0 |
0 |
| VODI |
0 |
75 |
18 |
27 |
42 |
7 |
0 |
0 |
| ODI |
0 |
64 |
20 |
88 |
366 |
36 |
1 |
0 |
| CDI |
0 |
43 |
26 |
104 |
376 |
195 |
57 |
4 |
| VCDI |
0 |
1 |
19 |
111 |
401 |
884 |
5423 |
24307 |
|
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 |
13 |
326 |
19 |
2 |
0 |
0 |
0 |
0 |
| OW |
1 |
95 |
7 |
20 |
0 |
0 |
0 |
0 |
| VODI |
0 |
57 |
24 |
41 |
19 |
5 |
0 |
0 |
| ODI |
0 |
28 |
17 |
62 |
152 |
199 |
0 |
0 |
| CDI |
0 |
28 |
8 |
54 |
246 |
353 |
8 |
0 |
| VCDI |
0 |
21 |
28 |
106 |
351 |
906 |
5138 |
24762 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14 |
220 |
11 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
90 |
10 |
6 |
0 |
0 |
0 |
0 |
| VODI |
0 |
59 |
6 |
35 |
4 |
0 |
0 |
0 |
| ODI |
0 |
53 |
16 |
56 |
79 |
48 |
0 |
0 |
| CDI |
0 |
77 |
25 |
57 |
148 |
309 |
3 |
6 |
| VCDI |
0 |
56 |
35 |
131 |
537 |
1106 |
5143 |
24756 |
|
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