Validation of sea ice concentration
Bulletin date: 2024-01-11
Model vs. observations, sea ice class contingency tables
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 |
|
...date precedes bulletin
|
Date: 2024-01-09:
| 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 |
55945 |
22182 |
2706 |
504 |
135 |
12 |
1 |
0 |
| OW |
0 |
493 |
1728 |
858 |
291 |
105 |
26 |
0 |
| VODI |
0 |
155 |
847 |
917 |
699 |
610 |
301 |
14 |
| ODI |
0 |
3 |
251 |
454 |
400 |
792 |
874 |
50 |
| CDI |
0 |
0 |
177 |
443 |
326 |
839 |
4633 |
510 |
| VCDI |
0 |
0 |
8 |
214 |
412 |
1189 |
23614 |
34750 |
|
...date precedes bulletin
|
Date: 2024-01-11:
| 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 |
55193 |
22409 |
1354 |
533 |
101 |
28 |
0 |
0 |
| OW |
0 |
1273 |
1144 |
949 |
240 |
64 |
14 |
0 |
| VODI |
0 |
351 |
1018 |
1163 |
654 |
403 |
135 |
6 |
| ODI |
0 |
97 |
427 |
617 |
583 |
989 |
756 |
18 |
| CDI |
0 |
49 |
247 |
439 |
593 |
1303 |
4558 |
123 |
| VCDI |
0 |
0 |
41 |
76 |
385 |
1268 |
36023 |
22844 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
55193 |
22404 |
1340 |
638 |
143 |
49 |
3 |
0 |
| OW |
0 |
1263 |
1126 |
869 |
240 |
65 |
11 |
0 |
| VODI |
0 |
358 |
1036 |
1102 |
605 |
399 |
130 |
6 |
| ODI |
0 |
100 |
442 |
653 |
584 |
948 |
786 |
21 |
| CDI |
0 |
54 |
248 |
457 |
599 |
1312 |
4724 |
123 |
| VCDI |
0 |
0 |
39 |
58 |
385 |
1282 |
35832 |
22841 |
|
Date: 2024-01-15:
| 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 |
52323 |
21994 |
2332 |
263 |
48 |
9 |
0 |
0 |
| OW |
0 |
469 |
2210 |
1350 |
225 |
145 |
0 |
0 |
| VODI |
0 |
6 |
932 |
1469 |
1157 |
633 |
114 |
0 |
| ODI |
0 |
0 |
152 |
442 |
882 |
932 |
567 |
0 |
| CDI |
0 |
0 |
64 |
208 |
707 |
2403 |
3445 |
36 |
| VCDI |
0 |
0 |
73 |
104 |
237 |
1435 |
31269 |
29833 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
52323 |
21631 |
1999 |
293 |
38 |
5 |
0 |
0 |
| OW |
0 |
780 |
1945 |
867 |
165 |
200 |
0 |
0 |
| VODI |
0 |
58 |
1275 |
1492 |
801 |
447 |
90 |
0 |
| ODI |
0 |
0 |
332 |
686 |
975 |
708 |
503 |
0 |
| CDI |
0 |
0 |
82 |
348 |
904 |
2368 |
3002 |
34 |
| VCDI |
0 |
0 |
130 |
150 |
373 |
1829 |
31800 |
29835 |
|
Date: 2024-01-17:
| 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 |
54125 |
20893 |
1276 |
95 |
44 |
4 |
0 |
0 |
| OW |
0 |
676 |
2562 |
652 |
164 |
72 |
0 |
0 |
| VODI |
0 |
35 |
1104 |
1544 |
759 |
553 |
28 |
0 |
| ODI |
0 |
0 |
225 |
673 |
820 |
1021 |
323 |
0 |
| CDI |
0 |
0 |
69 |
397 |
886 |
1760 |
2545 |
40 |
| VCDI |
0 |
0 |
73 |
153 |
490 |
1247 |
36672 |
26488 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
54125 |
20433 |
1223 |
103 |
25 |
8 |
0 |
0 |
| OW |
0 |
943 |
2122 |
403 |
169 |
92 |
0 |
0 |
| VODI |
0 |
227 |
1319 |
1261 |
525 |
471 |
18 |
0 |
| ODI |
0 |
1 |
408 |
936 |
767 |
935 |
316 |
0 |
| CDI |
0 |
0 |
146 |
539 |
987 |
1750 |
2319 |
59 |
| VCDI |
0 |
0 |
91 |
272 |
690 |
1401 |
36915 |
26469 |
|
Date: 2024-01-19:
| 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 |
54274 |
20796 |
1055 |
164 |
19 |
0 |
0 |
0 |
| OW |
0 |
1388 |
1556 |
760 |
127 |
43 |
1 |
0 |
| VODI |
0 |
333 |
1224 |
1501 |
445 |
269 |
41 |
0 |
| ODI |
0 |
106 |
481 |
1148 |
577 |
397 |
415 |
5 |
| CDI |
0 |
60 |
288 |
792 |
733 |
1075 |
2874 |
144 |
| VCDI |
0 |
2 |
71 |
306 |
544 |
1556 |
40218 |
22680 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
54274 |
20266 |
930 |
146 |
11 |
3 |
1 |
0 |
| OW |
0 |
1434 |
1244 |
667 |
108 |
46 |
5 |
0 |
| VODI |
0 |
669 |
1171 |
1244 |
371 |
197 |
42 |
0 |
| ODI |
0 |
237 |
597 |
1207 |
584 |
378 |
234 |
3 |
| CDI |
0 |
79 |
597 |
987 |
654 |
938 |
2111 |
115 |
| VCDI |
0 |
0 |
136 |
420 |
717 |
1778 |
41156 |
22711 |
|
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