Validation of sea ice concentration
Bulletin date: 2023-12-28
Model vs. observations, sea ice class contingency tables
Date: 2023-12-22:
| 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 |
60432 |
24224 |
2276 |
461 |
132 |
52 |
0 |
0 |
| OW |
0 |
875 |
1600 |
584 |
351 |
200 |
4 |
0 |
| VODI |
0 |
171 |
784 |
940 |
840 |
884 |
139 |
0 |
| ODI |
0 |
47 |
282 |
506 |
874 |
2018 |
748 |
0 |
| CDI |
0 |
8 |
144 |
355 |
934 |
3361 |
5356 |
10 |
| VCDI |
0 |
0 |
38 |
259 |
574 |
2161 |
28083 |
17761 |
|
...date precedes bulletin
|
Date: 2023-12-26:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2023-12-28:
| 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 |
60406 |
23845 |
1432 |
260 |
14 |
3 |
2 |
0 |
| OW |
0 |
1721 |
1438 |
559 |
118 |
32 |
7 |
0 |
| VODI |
0 |
394 |
1049 |
1217 |
395 |
160 |
92 |
0 |
| ODI |
0 |
48 |
307 |
692 |
655 |
992 |
967 |
0 |
| CDI |
0 |
15 |
238 |
555 |
765 |
1550 |
3091 |
25 |
| VCDI |
0 |
0 |
253 |
349 |
504 |
3079 |
36283 |
14956 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
60406 |
24005 |
1467 |
265 |
16 |
4 |
2 |
0 |
| OW |
0 |
1561 |
1424 |
589 |
120 |
32 |
11 |
0 |
| VODI |
0 |
395 |
1035 |
1154 |
395 |
164 |
72 |
0 |
| ODI |
0 |
54 |
319 |
691 |
606 |
937 |
935 |
0 |
| CDI |
0 |
8 |
233 |
564 |
780 |
1469 |
3156 |
23 |
| VCDI |
0 |
0 |
239 |
369 |
534 |
3210 |
36266 |
14958 |
|
Date: 2024-01-01:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2024-01-03:
| 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 |
59988 |
23098 |
1858 |
380 |
57 |
11 |
0 |
0 |
| OW |
0 |
1288 |
1371 |
865 |
181 |
46 |
0 |
0 |
| VODI |
0 |
334 |
745 |
1138 |
589 |
245 |
32 |
0 |
| ODI |
0 |
68 |
294 |
828 |
582 |
540 |
324 |
1 |
| CDI |
0 |
0 |
166 |
1057 |
1448 |
2504 |
2554 |
54 |
| VCDI |
0 |
0 |
130 |
607 |
562 |
4198 |
38992 |
11333 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59988 |
21939 |
1037 |
255 |
64 |
12 |
0 |
0 |
| OW |
0 |
1489 |
1215 |
493 |
177 |
24 |
0 |
0 |
| VODI |
0 |
861 |
1184 |
901 |
355 |
174 |
16 |
0 |
| ODI |
0 |
386 |
469 |
1023 |
547 |
517 |
232 |
0 |
| CDI |
0 |
113 |
492 |
1373 |
1431 |
2114 |
1780 |
9 |
| VCDI |
0 |
0 |
167 |
830 |
845 |
4703 |
39874 |
11379 |
|
Date: 2024-01-05:
| 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 |
57853 |
23278 |
2358 |
357 |
128 |
19 |
0 |
0 |
| OW |
0 |
303 |
1608 |
800 |
413 |
132 |
0 |
0 |
| VODI |
0 |
38 |
952 |
960 |
670 |
610 |
40 |
0 |
| ODI |
0 |
2 |
283 |
565 |
586 |
642 |
368 |
0 |
| CDI |
0 |
0 |
152 |
407 |
784 |
1519 |
4358 |
19 |
| VCDI |
0 |
0 |
267 |
391 |
478 |
2349 |
34636 |
20143 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
57853 |
21566 |
1227 |
320 |
172 |
41 |
0 |
0 |
| OW |
0 |
1318 |
1441 |
445 |
241 |
94 |
36 |
0 |
| VODI |
0 |
537 |
1300 |
897 |
586 |
373 |
146 |
0 |
| ODI |
0 |
178 |
634 |
692 |
623 |
907 |
442 |
0 |
| CDI |
0 |
22 |
707 |
741 |
907 |
1744 |
4211 |
48 |
| VCDI |
0 |
0 |
311 |
385 |
530 |
2112 |
34567 |
20114 |
|
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