Validation of sea ice concentration
Bulletin date: 2023-11-09
Model vs. observations, sea ice class contingency tables
Date: 2023-11-03:
| 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 |
80219 |
23291 |
2506 |
734 |
225 |
208 |
23 |
12 |
| OW |
0 |
454 |
1375 |
790 |
466 |
364 |
73 |
1 |
| VODI |
0 |
26 |
366 |
884 |
684 |
697 |
173 |
2 |
| ODI |
0 |
0 |
60 |
584 |
784 |
1277 |
325 |
2 |
| CDI |
0 |
0 |
24 |
240 |
710 |
2229 |
1400 |
5 |
| VCDI |
0 |
0 |
0 |
15 |
607 |
4225 |
19624 |
12936 |
|
...date precedes bulletin
|
Date: 2023-11-07:
| 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 |
78200 |
23772 |
1927 |
561 |
172 |
78 |
2 |
0 |
| OW |
0 |
680 |
1505 |
876 |
290 |
319 |
14 |
0 |
| VODI |
0 |
15 |
420 |
1065 |
418 |
551 |
79 |
0 |
| ODI |
0 |
0 |
72 |
387 |
444 |
853 |
352 |
7 |
| CDI |
0 |
0 |
17 |
248 |
403 |
1378 |
3032 |
11 |
| VCDI |
0 |
0 |
1 |
70 |
117 |
2725 |
26233 |
11174 |
|
...date precedes bulletin
|
Date: 2023-11-09:
| 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 |
75999 |
24631 |
1688 |
510 |
105 |
41 |
1 |
0 |
| OW |
0 |
1116 |
977 |
886 |
427 |
212 |
115 |
0 |
| VODI |
0 |
262 |
473 |
1086 |
652 |
415 |
257 |
0 |
| ODI |
0 |
32 |
192 |
431 |
390 |
773 |
446 |
0 |
| CDI |
0 |
0 |
77 |
414 |
413 |
1290 |
3297 |
5 |
| VCDI |
0 |
0 |
0 |
35 |
142 |
2511 |
23645 |
14522 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
75999 |
24722 |
1682 |
551 |
138 |
51 |
5 |
0 |
| OW |
0 |
1018 |
933 |
853 |
393 |
199 |
103 |
0 |
| VODI |
0 |
246 |
502 |
1048 |
649 |
409 |
286 |
0 |
| ODI |
0 |
55 |
184 |
427 |
385 |
815 |
432 |
0 |
| CDI |
0 |
0 |
106 |
431 |
397 |
1224 |
2991 |
9 |
| VCDI |
0 |
0 |
0 |
52 |
167 |
2544 |
23944 |
14518 |
|
Date: 2023-11-13:
| 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 |
73547 |
24121 |
1733 |
330 |
142 |
70 |
16 |
0 |
| OW |
0 |
977 |
1295 |
412 |
334 |
255 |
119 |
0 |
| VODI |
0 |
81 |
658 |
936 |
744 |
936 |
264 |
0 |
| ODI |
0 |
12 |
64 |
263 |
409 |
1381 |
845 |
0 |
| CDI |
0 |
0 |
4 |
87 |
248 |
1358 |
3557 |
19 |
| VCDI |
0 |
0 |
0 |
0 |
13 |
1705 |
24977 |
16556 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
73547 |
23969 |
1746 |
380 |
154 |
76 |
19 |
0 |
| OW |
0 |
1010 |
1029 |
415 |
439 |
383 |
221 |
0 |
| VODI |
0 |
154 |
774 |
655 |
524 |
915 |
378 |
0 |
| ODI |
0 |
58 |
193 |
358 |
348 |
1043 |
791 |
3 |
| CDI |
0 |
0 |
12 |
218 |
380 |
1329 |
3102 |
40 |
| VCDI |
0 |
0 |
0 |
2 |
45 |
1959 |
25267 |
16532 |
|
Date: 2023-11-15:
| 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 |
71383 |
25050 |
1704 |
247 |
99 |
72 |
7 |
0 |
| OW |
2 |
557 |
1429 |
639 |
311 |
462 |
37 |
0 |
| VODI |
0 |
89 |
698 |
835 |
788 |
524 |
270 |
0 |
| ODI |
0 |
1 |
142 |
399 |
650 |
900 |
738 |
0 |
| CDI |
0 |
0 |
18 |
189 |
527 |
830 |
3821 |
34 |
| VCDI |
0 |
0 |
1 |
11 |
79 |
935 |
23765 |
20225 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
71385 |
24790 |
1703 |
327 |
144 |
80 |
8 |
0 |
| OW |
0 |
725 |
1123 |
568 |
386 |
543 |
189 |
0 |
| VODI |
0 |
109 |
846 |
602 |
716 |
647 |
494 |
0 |
| ODI |
0 |
73 |
279 |
457 |
489 |
707 |
736 |
12 |
| CDI |
0 |
0 |
39 |
343 |
600 |
780 |
3241 |
56 |
| VCDI |
0 |
0 |
2 |
23 |
119 |
966 |
23970 |
20191 |
|
Date: 2023-11-17:
| 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 |
69052 |
25509 |
1645 |
283 |
189 |
52 |
2 |
0 |
| OW |
0 |
824 |
1193 |
742 |
414 |
298 |
78 |
1 |
| VODI |
0 |
58 |
544 |
675 |
683 |
513 |
241 |
13 |
| ODI |
0 |
10 |
144 |
258 |
498 |
916 |
590 |
19 |
| CDI |
0 |
0 |
42 |
245 |
480 |
1600 |
3460 |
101 |
| VCDI |
0 |
0 |
3 |
27 |
98 |
578 |
22625 |
23765 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
69052 |
25330 |
1898 |
456 |
289 |
121 |
2 |
0 |
| OW |
0 |
850 |
825 |
625 |
389 |
407 |
218 |
2 |
| VODI |
0 |
195 |
587 |
522 |
714 |
772 |
476 |
10 |
| ODI |
0 |
19 |
173 |
342 |
434 |
1019 |
722 |
22 |
| CDI |
0 |
7 |
66 |
239 |
414 |
943 |
3086 |
111 |
| VCDI |
0 |
0 |
22 |
46 |
122 |
695 |
22492 |
23754 |
|
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