Validation of sea ice concentration
Bulletin date: 2024-10-31
Model vs. observations, sea ice class contingency tables
Date: 2024-10-25:
| 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 |
97226 |
24663 |
2418 |
616 |
203 |
26 |
2 |
0 |
| OW |
0 |
390 |
803 |
965 |
446 |
119 |
3 |
0 |
| VODI |
0 |
66 |
162 |
810 |
500 |
252 |
29 |
0 |
| ODI |
0 |
37 |
91 |
738 |
367 |
278 |
69 |
0 |
| CDI |
0 |
13 |
157 |
971 |
311 |
548 |
1238 |
0 |
| VCDI |
0 |
0 |
148 |
652 |
295 |
1394 |
11891 |
9571 |
|
...date precedes bulletin
|
Date: 2024-10-29:
| 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 |
95231 |
24096 |
3930 |
837 |
104 |
10 |
2 |
0 |
| OW |
0 |
110 |
942 |
910 |
299 |
136 |
25 |
0 |
| VODI |
0 |
2 |
215 |
702 |
495 |
684 |
149 |
0 |
| ODI |
0 |
0 |
42 |
363 |
463 |
901 |
466 |
0 |
| CDI |
0 |
0 |
18 |
179 |
516 |
1380 |
2948 |
34 |
| VCDI |
0 |
0 |
0 |
93 |
535 |
1010 |
12582 |
8059 |
|
...date precedes bulletin
|
Date: 2024-10-31:
| 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 |
94263 |
24420 |
3572 |
865 |
328 |
60 |
1 |
0 |
| OW |
0 |
70 |
879 |
829 |
304 |
197 |
2 |
0 |
| VODI |
0 |
6 |
135 |
661 |
589 |
786 |
172 |
0 |
| ODI |
0 |
0 |
45 |
337 |
418 |
1342 |
430 |
0 |
| CDI |
0 |
0 |
3 |
307 |
430 |
1901 |
3989 |
233 |
| VCDI |
0 |
0 |
0 |
65 |
328 |
1443 |
12297 |
6761 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
94263 |
24422 |
3557 |
843 |
311 |
62 |
1 |
0 |
| OW |
0 |
60 |
866 |
871 |
308 |
177 |
2 |
0 |
| VODI |
0 |
14 |
141 |
655 |
600 |
781 |
98 |
0 |
| ODI |
0 |
0 |
40 |
321 |
431 |
1332 |
438 |
0 |
| CDI |
0 |
0 |
27 |
308 |
427 |
1912 |
4373 |
420 |
| VCDI |
0 |
0 |
3 |
66 |
320 |
1465 |
11979 |
6574 |
|
Date: 2024-11-04:
| 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 |
82257 |
22707 |
2510 |
569 |
168 |
58 |
1 |
0 |
| OW |
0 |
723 |
950 |
800 |
320 |
67 |
0 |
0 |
| VODI |
0 |
339 |
372 |
762 |
521 |
649 |
94 |
0 |
| ODI |
0 |
0 |
64 |
497 |
682 |
737 |
789 |
0 |
| CDI |
0 |
0 |
0 |
218 |
775 |
1586 |
4711 |
442 |
| VCDI |
0 |
0 |
0 |
87 |
816 |
723 |
8497 |
10216 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
82257 |
22979 |
2328 |
455 |
171 |
59 |
1 |
0 |
| OW |
0 |
623 |
1033 |
640 |
279 |
245 |
5 |
0 |
| VODI |
0 |
147 |
403 |
772 |
390 |
443 |
53 |
0 |
| ODI |
0 |
20 |
92 |
536 |
577 |
575 |
541 |
1 |
| CDI |
0 |
0 |
30 |
420 |
928 |
1564 |
3336 |
23 |
| VCDI |
0 |
0 |
10 |
110 |
937 |
934 |
10156 |
10634 |
|
Date: 2024-11-06:
| 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 |
89188 |
25923 |
4019 |
916 |
229 |
51 |
1 |
0 |
| OW |
0 |
80 |
1206 |
1009 |
423 |
251 |
6 |
0 |
| VODI |
0 |
0 |
217 |
827 |
558 |
725 |
157 |
1 |
| ODI |
0 |
0 |
12 |
271 |
481 |
1114 |
678 |
21 |
| CDI |
0 |
0 |
1 |
115 |
316 |
2168 |
2358 |
36 |
| VCDI |
0 |
0 |
0 |
20 |
123 |
1658 |
12907 |
10402 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
89188 |
25904 |
3905 |
941 |
341 |
126 |
3 |
0 |
| OW |
0 |
98 |
1206 |
816 |
463 |
396 |
24 |
0 |
| VODI |
0 |
1 |
250 |
703 |
500 |
850 |
188 |
0 |
| ODI |
0 |
0 |
74 |
391 |
292 |
1014 |
599 |
12 |
| CDI |
0 |
0 |
20 |
290 |
411 |
1846 |
2333 |
59 |
| VCDI |
0 |
0 |
0 |
17 |
123 |
1735 |
12960 |
10389 |
|
Date: 2024-11-08:
| 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 |
91554 |
23561 |
3768 |
480 |
265 |
64 |
1 |
0 |
| OW |
0 |
170 |
1300 |
779 |
351 |
307 |
20 |
0 |
| VODI |
0 |
20 |
460 |
649 |
590 |
776 |
140 |
0 |
| ODI |
0 |
0 |
101 |
227 |
366 |
735 |
435 |
0 |
| CDI |
0 |
0 |
43 |
81 |
330 |
1713 |
2416 |
0 |
| VCDI |
0 |
0 |
0 |
103 |
131 |
1736 |
12930 |
11866 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
91554 |
22881 |
3239 |
493 |
167 |
218 |
19 |
0 |
| OW |
0 |
721 |
1505 |
612 |
286 |
330 |
83 |
0 |
| VODI |
0 |
147 |
654 |
622 |
603 |
580 |
293 |
0 |
| ODI |
0 |
2 |
208 |
331 |
364 |
634 |
585 |
0 |
| CDI |
0 |
0 |
63 |
145 |
453 |
1593 |
1675 |
0 |
| VCDI |
0 |
0 |
3 |
116 |
160 |
1976 |
13287 |
11866 |
|
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