Validation of sea ice concentration
Bulletin date: 2024-12-05
Model vs. observations, sea ice class contingency tables
Date: 2024-11-29:
| 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 |
72489 |
28056 |
2170 |
552 |
51 |
1 |
1 |
0 |
| OW |
0 |
927 |
1234 |
1039 |
381 |
34 |
2 |
0 |
| VODI |
0 |
143 |
588 |
1155 |
726 |
230 |
28 |
0 |
| ODI |
0 |
28 |
227 |
668 |
799 |
842 |
316 |
0 |
| CDI |
0 |
1 |
149 |
333 |
1311 |
2206 |
2490 |
16 |
| VCDI |
0 |
0 |
113 |
240 |
305 |
1241 |
20354 |
17398 |
|
...date precedes bulletin
|
Date: 2024-12-03:
| 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 |
72125 |
26585 |
2456 |
195 |
82 |
12 |
1 |
0 |
| OW |
0 |
1401 |
1751 |
801 |
208 |
59 |
0 |
0 |
| VODI |
0 |
244 |
925 |
1220 |
659 |
452 |
60 |
0 |
| ODI |
0 |
38 |
118 |
419 |
819 |
1218 |
471 |
0 |
| CDI |
0 |
11 |
94 |
198 |
842 |
4390 |
4630 |
26 |
| VCDI |
0 |
0 |
7 |
141 |
228 |
1378 |
17754 |
16826 |
|
...date precedes bulletin
|
Date: 2024-12-05:
| 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 |
71484 |
24992 |
3053 |
372 |
76 |
10 |
7 |
0 |
| OW |
0 |
1329 |
1453 |
912 |
360 |
104 |
37 |
0 |
| VODI |
0 |
245 |
822 |
937 |
1199 |
481 |
95 |
0 |
| ODI |
0 |
14 |
196 |
304 |
998 |
1375 |
644 |
0 |
| CDI |
0 |
0 |
73 |
68 |
564 |
2582 |
4197 |
41 |
| VCDI |
0 |
0 |
36 |
46 |
129 |
1661 |
18303 |
19645 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
71484 |
25284 |
3379 |
559 |
134 |
24 |
7 |
0 |
| OW |
0 |
1021 |
1249 |
915 |
452 |
137 |
65 |
0 |
| VODI |
0 |
267 |
745 |
826 |
1200 |
583 |
93 |
0 |
| ODI |
0 |
7 |
163 |
244 |
962 |
1580 |
805 |
0 |
| CDI |
0 |
1 |
75 |
50 |
475 |
2403 |
4359 |
23 |
| VCDI |
0 |
0 |
22 |
45 |
103 |
1486 |
17954 |
19663 |
|
Date: 2024-12-09:
| 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 |
71688 |
25103 |
2847 |
209 |
18 |
2 |
1 |
0 |
| OW |
1 |
1235 |
2299 |
645 |
184 |
45 |
3 |
0 |
| VODI |
0 |
79 |
808 |
1037 |
751 |
339 |
54 |
0 |
| ODI |
0 |
14 |
166 |
699 |
639 |
960 |
404 |
0 |
| CDI |
0 |
6 |
39 |
217 |
451 |
3197 |
3000 |
11 |
| VCDI |
0 |
0 |
24 |
89 |
117 |
1035 |
21798 |
18630 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
71689 |
24651 |
2689 |
331 |
93 |
28 |
1 |
0 |
| OW |
0 |
1298 |
1456 |
386 |
232 |
104 |
75 |
0 |
| VODI |
0 |
371 |
1494 |
866 |
470 |
278 |
205 |
0 |
| ODI |
0 |
108 |
458 |
749 |
588 |
1016 |
643 |
0 |
| CDI |
0 |
9 |
68 |
473 |
641 |
2854 |
2868 |
5 |
| VCDI |
0 |
0 |
18 |
91 |
136 |
1298 |
21468 |
18636 |
|
Date: 2024-12-11:
| 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 |
71354 |
25726 |
1728 |
226 |
20 |
2 |
1 |
0 |
| OW |
0 |
2123 |
1151 |
629 |
152 |
33 |
13 |
0 |
| VODI |
0 |
698 |
565 |
851 |
720 |
334 |
111 |
0 |
| ODI |
0 |
164 |
197 |
386 |
502 |
695 |
701 |
0 |
| CDI |
0 |
16 |
86 |
245 |
419 |
1038 |
2988 |
13 |
| VCDI |
0 |
2 |
0 |
43 |
145 |
956 |
24252 |
19559 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
71354 |
24437 |
2126 |
486 |
139 |
39 |
27 |
0 |
| OW |
0 |
2136 |
621 |
460 |
275 |
92 |
119 |
0 |
| VODI |
0 |
1408 |
358 |
513 |
504 |
413 |
305 |
0 |
| ODI |
0 |
547 |
404 |
319 |
395 |
590 |
900 |
0 |
| CDI |
0 |
195 |
213 |
553 |
528 |
1036 |
2653 |
6 |
| VCDI |
0 |
6 |
5 |
49 |
117 |
888 |
24062 |
19566 |
|
Date: 2024-12-13:
| 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 |
68813 |
25656 |
2503 |
336 |
54 |
7 |
4 |
0 |
| OW |
0 |
1142 |
1523 |
918 |
328 |
89 |
29 |
0 |
| VODI |
0 |
152 |
750 |
732 |
677 |
486 |
334 |
0 |
| ODI |
0 |
45 |
205 |
433 |
483 |
636 |
794 |
5 |
| CDI |
0 |
30 |
153 |
255 |
429 |
1048 |
3567 |
67 |
| VCDI |
0 |
0 |
32 |
108 |
264 |
915 |
23095 |
21747 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
68813 |
24157 |
2657 |
701 |
348 |
74 |
48 |
0 |
| OW |
0 |
1596 |
812 |
471 |
297 |
248 |
208 |
0 |
| VODI |
0 |
931 |
723 |
518 |
393 |
410 |
605 |
0 |
| ODI |
0 |
242 |
482 |
439 |
402 |
474 |
890 |
0 |
| CDI |
0 |
97 |
431 |
546 |
514 |
1166 |
3636 |
101 |
| VCDI |
0 |
2 |
61 |
107 |
281 |
809 |
22436 |
21718 |
|
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