Validation of sea ice concentration
Bulletin date: 2024-01-04
Model vs. observations, sea ice class contingency tables
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 |
60553 |
23704 |
1114 |
300 |
24 |
4 |
2 |
0 |
| OW |
0 |
1845 |
1298 |
571 |
145 |
35 |
11 |
0 |
| VODI |
0 |
467 |
1130 |
1118 |
367 |
132 |
87 |
0 |
| ODI |
0 |
66 |
424 |
701 |
655 |
847 |
791 |
0 |
| CDI |
0 |
15 |
329 |
559 |
669 |
1339 |
3038 |
34 |
| VCDI |
0 |
3 |
337 |
550 |
678 |
3208 |
36421 |
14897 |
|
...date precedes bulletin
|
Date: 2024-01-02:
| 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 |
62828 |
20117 |
2122 |
493 |
91 |
7 |
0 |
0 |
| OW |
0 |
1554 |
1547 |
608 |
209 |
43 |
4 |
0 |
| VODI |
0 |
423 |
826 |
1069 |
495 |
195 |
51 |
0 |
| ODI |
0 |
117 |
397 |
775 |
594 |
567 |
210 |
0 |
| CDI |
0 |
16 |
353 |
1164 |
1092 |
1913 |
2085 |
39 |
| VCDI |
0 |
0 |
81 |
570 |
918 |
4546 |
34944 |
15405 |
|
...date precedes bulletin
|
Date: 2024-01-04:
| 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 |
58660 |
23640 |
2128 |
371 |
62 |
26 |
0 |
0 |
| OW |
0 |
478 |
1788 |
766 |
344 |
212 |
3 |
0 |
| VODI |
0 |
122 |
906 |
800 |
646 |
481 |
35 |
0 |
| ODI |
0 |
7 |
277 |
613 |
536 |
696 |
247 |
0 |
| CDI |
0 |
0 |
117 |
536 |
962 |
1592 |
4206 |
47 |
| VCDI |
0 |
0 |
159 |
529 |
522 |
2576 |
34946 |
18432 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
58660 |
23633 |
2166 |
436 |
59 |
31 |
0 |
0 |
| OW |
0 |
486 |
1876 |
762 |
390 |
179 |
3 |
0 |
| VODI |
0 |
120 |
783 |
779 |
603 |
524 |
33 |
0 |
| ODI |
0 |
8 |
281 |
571 |
520 |
619 |
266 |
0 |
| CDI |
0 |
0 |
124 |
521 |
965 |
1604 |
4212 |
39 |
| VCDI |
0 |
0 |
145 |
546 |
535 |
2626 |
34923 |
18440 |
|
Date: 2024-01-08:
| 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 |
56296 |
22283 |
2969 |
344 |
120 |
26 |
0 |
0 |
| OW |
0 |
493 |
1996 |
699 |
302 |
133 |
13 |
0 |
| VODI |
0 |
45 |
840 |
938 |
623 |
569 |
323 |
14 |
| ODI |
0 |
3 |
265 |
481 |
365 |
725 |
1065 |
34 |
| CDI |
0 |
0 |
212 |
436 |
305 |
1054 |
5459 |
329 |
| VCDI |
0 |
0 |
86 |
226 |
281 |
880 |
23739 |
33497 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
56296 |
21936 |
2658 |
370 |
185 |
74 |
0 |
0 |
| OW |
0 |
560 |
1574 |
562 |
325 |
205 |
35 |
0 |
| VODI |
0 |
204 |
1038 |
583 |
401 |
478 |
336 |
11 |
| ODI |
0 |
91 |
460 |
583 |
340 |
501 |
818 |
62 |
| CDI |
0 |
33 |
316 |
569 |
364 |
1072 |
4778 |
597 |
| VCDI |
0 |
0 |
322 |
457 |
381 |
1057 |
24632 |
33204 |
|
Date: 2024-01-10:
| 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 |
55655 |
22515 |
1908 |
427 |
93 |
10 |
0 |
0 |
| OW |
0 |
767 |
1552 |
970 |
239 |
60 |
17 |
0 |
| VODI |
0 |
209 |
1066 |
1137 |
662 |
470 |
112 |
9 |
| ODI |
0 |
40 |
370 |
538 |
531 |
1048 |
622 |
44 |
| CDI |
0 |
0 |
217 |
352 |
479 |
1093 |
4265 |
144 |
| VCDI |
0 |
0 |
37 |
88 |
404 |
1770 |
36922 |
21626 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
55655 |
21709 |
1638 |
472 |
110 |
27 |
0 |
0 |
| OW |
0 |
1181 |
1181 |
830 |
278 |
129 |
21 |
0 |
| VODI |
0 |
413 |
1149 |
856 |
503 |
549 |
162 |
1 |
| ODI |
0 |
135 |
560 |
622 |
428 |
647 |
677 |
44 |
| CDI |
0 |
59 |
450 |
547 |
617 |
1196 |
4729 |
183 |
| VCDI |
0 |
34 |
172 |
185 |
472 |
1903 |
36349 |
21595 |
|
Date: 2024-01-12:
| 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 |
54378 |
21951 |
1652 |
419 |
196 |
64 |
0 |
0 |
| OW |
0 |
829 |
1587 |
796 |
363 |
168 |
3 |
0 |
| VODI |
0 |
242 |
1062 |
931 |
794 |
624 |
125 |
0 |
| ODI |
0 |
82 |
403 |
474 |
617 |
1047 |
995 |
1 |
| CDI |
0 |
55 |
298 |
363 |
533 |
1245 |
5145 |
35 |
| VCDI |
0 |
6 |
65 |
73 |
123 |
425 |
27447 |
32852 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
54378 |
21002 |
1772 |
642 |
299 |
129 |
2 |
0 |
| OW |
0 |
1063 |
1108 |
667 |
503 |
380 |
66 |
0 |
| VODI |
0 |
600 |
930 |
642 |
549 |
664 |
495 |
0 |
| ODI |
0 |
305 |
557 |
429 |
447 |
627 |
1059 |
9 |
| CDI |
0 |
109 |
515 |
473 |
615 |
1099 |
4459 |
54 |
| VCDI |
0 |
86 |
185 |
203 |
213 |
674 |
27634 |
32825 |
|
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