Validation of sea ice concentration
Bulletin date: 2024-11-07
Model vs. observations, sea ice class contingency tables
Date: 2024-11-01:
| 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 |
93464 |
25345 |
2894 |
892 |
350 |
68 |
1 |
0 |
| OW |
0 |
231 |
867 |
758 |
386 |
219 |
1 |
0 |
| VODI |
0 |
13 |
270 |
771 |
524 |
640 |
129 |
0 |
| ODI |
0 |
0 |
64 |
493 |
480 |
1179 |
389 |
0 |
| CDI |
0 |
0 |
6 |
398 |
483 |
1818 |
3078 |
0 |
| VCDI |
0 |
0 |
0 |
177 |
267 |
1440 |
12574 |
7799 |
|
...date precedes bulletin
|
Date: 2024-11-05:
| 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 |
89654 |
26908 |
3620 |
717 |
189 |
70 |
1 |
0 |
| OW |
0 |
219 |
1333 |
863 |
207 |
118 |
0 |
0 |
| VODI |
0 |
11 |
321 |
1168 |
669 |
759 |
76 |
4 |
| ODI |
0 |
0 |
29 |
236 |
671 |
1063 |
763 |
39 |
| CDI |
0 |
0 |
0 |
88 |
293 |
1965 |
3712 |
141 |
| VCDI |
0 |
0 |
0 |
11 |
51 |
1155 |
10631 |
10713 |
|
...date precedes bulletin
|
Date: 2024-11-07:
| 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 |
88310 |
26304 |
4167 |
1008 |
243 |
57 |
4 |
0 |
| OW |
0 |
119 |
975 |
1334 |
314 |
208 |
40 |
0 |
| VODI |
0 |
8 |
165 |
1028 |
482 |
469 |
299 |
0 |
| ODI |
0 |
0 |
20 |
329 |
370 |
618 |
503 |
0 |
| CDI |
0 |
0 |
1 |
220 |
370 |
1429 |
2581 |
6 |
| VCDI |
0 |
0 |
0 |
100 |
153 |
1723 |
13598 |
10913 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
88310 |
26307 |
4106 |
1049 |
291 |
107 |
21 |
0 |
| OW |
0 |
110 |
1045 |
1353 |
296 |
240 |
90 |
0 |
| VODI |
0 |
14 |
159 |
1006 |
512 |
483 |
305 |
0 |
| ODI |
0 |
0 |
17 |
355 |
316 |
583 |
557 |
0 |
| CDI |
0 |
0 |
1 |
156 |
359 |
1287 |
2509 |
32 |
| VCDI |
0 |
0 |
0 |
100 |
158 |
1804 |
13543 |
10887 |
|
Date: 2024-11-11:
| 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 |
89113 |
23151 |
3532 |
729 |
223 |
20 |
2 |
0 |
| OW |
18 |
315 |
1495 |
765 |
498 |
189 |
7 |
0 |
| VODI |
15 |
15 |
460 |
705 |
795 |
783 |
116 |
0 |
| ODI |
0 |
0 |
91 |
162 |
425 |
1305 |
459 |
14 |
| CDI |
0 |
0 |
6 |
39 |
280 |
1126 |
2770 |
47 |
| VCDI |
0 |
0 |
0 |
0 |
65 |
106 |
14054 |
14573 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
89117 |
22938 |
3349 |
742 |
274 |
72 |
7 |
0 |
| OW |
16 |
483 |
1519 |
724 |
444 |
333 |
66 |
0 |
| VODI |
13 |
58 |
500 |
595 |
735 |
1044 |
347 |
0 |
| ODI |
0 |
2 |
151 |
193 |
270 |
710 |
535 |
14 |
| CDI |
0 |
0 |
65 |
142 |
472 |
1158 |
2142 |
69 |
| VCDI |
0 |
0 |
0 |
4 |
91 |
212 |
14311 |
14551 |
|
Date: 2024-11-13:
| 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 |
85737 |
24906 |
3731 |
847 |
88 |
51 |
2 |
0 |
| OW |
0 |
280 |
1592 |
1113 |
500 |
193 |
7 |
0 |
| VODI |
0 |
8 |
488 |
824 |
957 |
772 |
49 |
0 |
| ODI |
0 |
0 |
134 |
264 |
538 |
946 |
139 |
0 |
| CDI |
0 |
0 |
101 |
204 |
361 |
1225 |
2653 |
0 |
| VCDI |
0 |
0 |
5 |
98 |
127 |
434 |
18714 |
10380 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
85720 |
24079 |
3069 |
833 |
151 |
92 |
7 |
0 |
| OW |
17 |
978 |
1696 |
980 |
476 |
311 |
7 |
0 |
| VODI |
0 |
111 |
742 |
710 |
932 |
874 |
116 |
0 |
| ODI |
0 |
21 |
332 |
376 |
456 |
952 |
794 |
0 |
| CDI |
0 |
5 |
210 |
372 |
443 |
1052 |
3547 |
11 |
| VCDI |
0 |
0 |
2 |
79 |
113 |
340 |
17093 |
10369 |
|
Date: 2024-11-15:
| 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 |
82711 |
27920 |
3276 |
594 |
60 |
14 |
1 |
0 |
| OW |
2 |
391 |
1677 |
1238 |
407 |
345 |
27 |
0 |
| VODI |
0 |
86 |
577 |
1079 |
665 |
568 |
164 |
0 |
| ODI |
0 |
59 |
110 |
329 |
611 |
816 |
114 |
2 |
| CDI |
0 |
52 |
217 |
168 |
476 |
1545 |
1072 |
83 |
| VCDI |
0 |
1 |
221 |
252 |
373 |
1414 |
18435 |
10316 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
82713 |
26421 |
3340 |
709 |
111 |
83 |
6 |
0 |
| OW |
0 |
923 |
1376 |
1324 |
523 |
430 |
66 |
0 |
| VODI |
0 |
591 |
422 |
774 |
727 |
938 |
225 |
0 |
| ODI |
0 |
246 |
249 |
260 |
412 |
879 |
480 |
0 |
| CDI |
0 |
328 |
484 |
363 |
408 |
1188 |
1523 |
67 |
| VCDI |
0 |
0 |
207 |
230 |
411 |
1184 |
17513 |
10334 |
|
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