Validation of sea ice concentration
Bulletin date: 2024-11-28
Model vs. observations, sea ice class contingency tables
Date: 2024-11-22:
| 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 |
76132 |
28880 |
1567 |
480 |
193 |
49 |
2 |
0 |
| OW |
12 |
590 |
1296 |
1089 |
524 |
310 |
0 |
0 |
| VODI |
3 |
55 |
510 |
999 |
697 |
500 |
31 |
0 |
| ODI |
0 |
5 |
62 |
623 |
910 |
819 |
241 |
5 |
| CDI |
0 |
0 |
9 |
242 |
863 |
2455 |
3510 |
122 |
| VCDI |
0 |
0 |
0 |
9 |
41 |
1164 |
19889 |
13580 |
|
...date precedes bulletin
|
Date: 2024-11-26:
| 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 |
73915 |
28087 |
3009 |
412 |
74 |
10 |
2 |
0 |
| OW |
0 |
435 |
1727 |
871 |
346 |
87 |
8 |
0 |
| VODI |
0 |
16 |
692 |
835 |
914 |
606 |
86 |
0 |
| ODI |
0 |
0 |
181 |
307 |
669 |
1595 |
351 |
0 |
| CDI |
0 |
0 |
63 |
149 |
454 |
2165 |
3535 |
4 |
| VCDI |
0 |
0 |
29 |
215 |
112 |
651 |
20532 |
15324 |
|
...date precedes bulletin
|
Date: 2024-11-28:
| 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 |
73671 |
26904 |
2534 |
654 |
247 |
10 |
12 |
0 |
| OW |
0 |
693 |
1049 |
1034 |
611 |
113 |
15 |
0 |
| VODI |
0 |
108 |
383 |
794 |
1108 |
380 |
110 |
0 |
| ODI |
0 |
5 |
197 |
284 |
1108 |
979 |
501 |
0 |
| CDI |
0 |
0 |
128 |
186 |
820 |
1596 |
3691 |
27 |
| VCDI |
0 |
0 |
80 |
191 |
245 |
1298 |
21230 |
15472 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
73671 |
26882 |
2621 |
670 |
223 |
22 |
13 |
0 |
| OW |
0 |
681 |
990 |
1005 |
595 |
124 |
21 |
0 |
| VODI |
0 |
138 |
349 |
807 |
1091 |
356 |
108 |
0 |
| ODI |
0 |
9 |
207 |
300 |
1151 |
876 |
465 |
0 |
| CDI |
0 |
0 |
122 |
166 |
830 |
1669 |
3772 |
28 |
| VCDI |
0 |
0 |
82 |
195 |
249 |
1329 |
21180 |
15471 |
|
Date: 2024-12-02:
| 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 |
70647 |
28618 |
2397 |
421 |
97 |
26 |
2 |
0 |
| OW |
0 |
1313 |
1700 |
806 |
184 |
104 |
0 |
0 |
| VODI |
0 |
101 |
936 |
1113 |
673 |
556 |
40 |
0 |
| ODI |
0 |
1 |
132 |
486 |
642 |
1337 |
347 |
0 |
| CDI |
0 |
0 |
34 |
243 |
768 |
4140 |
3615 |
0 |
| VCDI |
0 |
0 |
7 |
42 |
198 |
2786 |
18419 |
15537 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
70647 |
27693 |
2317 |
436 |
109 |
22 |
2 |
0 |
| OW |
0 |
1721 |
1374 |
681 |
270 |
190 |
0 |
0 |
| VODI |
0 |
497 |
1019 |
923 |
443 |
503 |
41 |
0 |
| ODI |
0 |
107 |
274 |
570 |
507 |
910 |
353 |
0 |
| CDI |
0 |
15 |
198 |
398 |
943 |
3249 |
2438 |
0 |
| VCDI |
0 |
0 |
24 |
103 |
290 |
4075 |
19589 |
15537 |
|
Date: 2024-12-04:
| 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 |
72438 |
24527 |
3141 |
256 |
98 |
16 |
2 |
0 |
| OW |
0 |
1048 |
2120 |
775 |
324 |
52 |
9 |
0 |
| VODI |
0 |
95 |
895 |
1164 |
951 |
472 |
94 |
0 |
| ODI |
0 |
4 |
102 |
371 |
926 |
1427 |
532 |
4 |
| CDI |
0 |
0 |
43 |
131 |
548 |
2598 |
5510 |
39 |
| VCDI |
0 |
0 |
14 |
39 |
71 |
1445 |
17345 |
18842 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
72438 |
23484 |
2748 |
262 |
137 |
27 |
7 |
0 |
| OW |
0 |
1485 |
1840 |
637 |
343 |
157 |
23 |
0 |
| VODI |
0 |
639 |
1262 |
948 |
828 |
503 |
96 |
0 |
| ODI |
0 |
66 |
323 |
531 |
818 |
1101 |
406 |
1 |
| CDI |
0 |
0 |
108 |
312 |
707 |
2523 |
4653 |
104 |
| VCDI |
0 |
0 |
34 |
46 |
85 |
1699 |
18307 |
18780 |
|
Date: 2024-12-06:
| 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 |
72412 |
23962 |
2794 |
209 |
51 |
12 |
2 |
0 |
| OW |
0 |
1313 |
1842 |
483 |
176 |
120 |
11 |
0 |
| VODI |
0 |
329 |
1440 |
855 |
465 |
406 |
228 |
0 |
| ODI |
0 |
9 |
403 |
645 |
615 |
720 |
1215 |
0 |
| CDI |
0 |
1 |
188 |
302 |
322 |
995 |
5661 |
10 |
| VCDI |
0 |
0 |
44 |
124 |
198 |
666 |
19095 |
20145 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
72407 |
22004 |
2549 |
204 |
66 |
83 |
1 |
0 |
| OW |
5 |
2155 |
1583 |
386 |
187 |
119 |
58 |
0 |
| VODI |
0 |
1292 |
1278 |
778 |
458 |
416 |
562 |
0 |
| ODI |
0 |
155 |
823 |
623 |
520 |
534 |
878 |
0 |
| CDI |
0 |
8 |
427 |
468 |
377 |
963 |
4789 |
55 |
| VCDI |
0 |
0 |
51 |
159 |
219 |
804 |
19924 |
20100 |
|
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