Validation of sea ice concentration
Bulletin date: 2024-11-14
Model vs. observations, sea ice class contingency tables
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 |
|
...date precedes bulletin
|
Date: 2024-11-12:
| 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 |
58442 |
23864 |
3622 |
852 |
134 |
27 |
1 |
0 |
| OW |
0 |
261 |
1371 |
1080 |
540 |
248 |
2 |
0 |
| VODI |
0 |
53 |
416 |
747 |
925 |
791 |
57 |
0 |
| ODI |
0 |
0 |
106 |
224 |
438 |
1161 |
293 |
0 |
| CDI |
0 |
0 |
61 |
65 |
177 |
1555 |
2440 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
24 |
135 |
16874 |
12445 |
|
...date precedes bulletin
|
Date: 2024-11-14:
| 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 |
84228 |
28015 |
2274 |
510 |
37 |
39 |
2 |
0 |
| OW |
2 |
841 |
1424 |
1165 |
287 |
126 |
23 |
0 |
| VODI |
0 |
244 |
628 |
1100 |
526 |
433 |
76 |
0 |
| ODI |
0 |
134 |
232 |
488 |
503 |
518 |
187 |
0 |
| CDI |
0 |
166 |
210 |
235 |
306 |
1262 |
1982 |
0 |
| VCDI |
0 |
59 |
319 |
333 |
189 |
1154 |
19607 |
8604 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
84227 |
28203 |
2288 |
521 |
35 |
33 |
1 |
0 |
| OW |
3 |
695 |
1417 |
1222 |
305 |
116 |
20 |
0 |
| VODI |
0 |
227 |
629 |
1040 |
510 |
458 |
103 |
0 |
| ODI |
0 |
111 |
232 |
507 |
518 |
528 |
164 |
0 |
| CDI |
0 |
159 |
199 |
210 |
296 |
1282 |
2074 |
0 |
| VCDI |
0 |
64 |
322 |
331 |
184 |
1115 |
19515 |
8604 |
|
Date: 2024-11-18:
| 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 |
84357 |
24214 |
3030 |
421 |
272 |
233 |
3 |
0 |
| OW |
3 |
205 |
1718 |
591 |
212 |
173 |
16 |
0 |
| VODI |
2 |
2 |
494 |
986 |
691 |
598 |
109 |
0 |
| ODI |
0 |
0 |
83 |
363 |
822 |
1387 |
332 |
0 |
| CDI |
0 |
0 |
28 |
89 |
570 |
1578 |
2889 |
7 |
| VCDI |
0 |
0 |
0 |
0 |
43 |
765 |
18487 |
12695 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
84358 |
23485 |
2800 |
464 |
306 |
285 |
18 |
0 |
| OW |
4 |
925 |
1697 |
647 |
346 |
242 |
84 |
0 |
| VODI |
0 |
11 |
629 |
632 |
693 |
723 |
226 |
0 |
| ODI |
0 |
0 |
174 |
397 |
500 |
942 |
489 |
0 |
| CDI |
0 |
0 |
53 |
305 |
641 |
1300 |
1636 |
7 |
| VCDI |
0 |
0 |
0 |
5 |
124 |
1242 |
19383 |
12695 |
|
Date: 2024-11-20:
| 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 |
80922 |
26474 |
1641 |
515 |
289 |
90 |
1 |
0 |
| OW |
2 |
526 |
1421 |
636 |
301 |
490 |
1 |
0 |
| VODI |
0 |
79 |
506 |
757 |
489 |
562 |
55 |
0 |
| ODI |
0 |
9 |
121 |
500 |
747 |
1067 |
186 |
0 |
| CDI |
0 |
0 |
4 |
148 |
623 |
2326 |
2735 |
48 |
| VCDI |
0 |
0 |
0 |
21 |
58 |
1991 |
19538 |
12589 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
80924 |
25727 |
1369 |
599 |
363 |
364 |
6 |
0 |
| OW |
0 |
1267 |
1446 |
580 |
313 |
342 |
38 |
0 |
| VODI |
0 |
93 |
661 |
635 |
573 |
839 |
58 |
0 |
| ODI |
0 |
1 |
193 |
414 |
455 |
991 |
339 |
1 |
| CDI |
0 |
0 |
24 |
294 |
697 |
1771 |
2539 |
107 |
| VCDI |
0 |
0 |
0 |
55 |
106 |
2219 |
19536 |
12529 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
76144 |
27894 |
1403 |
800 |
402 |
91 |
2 |
0 |
| OW |
3 |
1529 |
1210 |
949 |
460 |
498 |
1 |
0 |
| VODI |
0 |
105 |
630 |
817 |
818 |
702 |
19 |
0 |
| ODI |
0 |
2 |
181 |
546 |
684 |
889 |
239 |
0 |
| CDI |
0 |
0 |
20 |
318 |
775 |
1467 |
2331 |
70 |
| VCDI |
0 |
0 |
0 |
12 |
89 |
1650 |
21081 |
13637 |
|
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