Validation of sea ice concentration
Bulletin date: 2024-08-15
Model vs. observations, sea ice class contingency tables
Date: 2024-08-09:
| 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 |
91348 |
22688 |
11816 |
1392 |
174 |
22 |
59 |
0 |
| OW |
0 |
108 |
1713 |
1879 |
829 |
362 |
251 |
0 |
| VODI |
0 |
0 |
217 |
1434 |
1205 |
1238 |
607 |
0 |
| ODI |
0 |
0 |
12 |
234 |
772 |
1542 |
4291 |
14 |
| CDI |
0 |
0 |
0 |
3 |
181 |
854 |
10042 |
1633 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
20 |
1463 |
65 |
|
...date precedes bulletin
|
Date: 2024-08-13:
| 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 |
92706 |
22201 |
13194 |
1685 |
260 |
25 |
54 |
0 |
| OW |
0 |
2 |
1389 |
2428 |
659 |
198 |
109 |
0 |
| VODI |
0 |
0 |
135 |
1487 |
1516 |
1092 |
433 |
0 |
| ODI |
0 |
0 |
0 |
145 |
232 |
1681 |
3394 |
163 |
| CDI |
0 |
0 |
0 |
5 |
17 |
58 |
6929 |
5551 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
517 |
203 |
|
...date precedes bulletin
|
Date: 2024-08-15:
| 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 |
93797 |
21723 |
13644 |
1177 |
200 |
53 |
52 |
0 |
| OW |
0 |
0 |
1391 |
2105 |
543 |
320 |
180 |
0 |
| VODI |
0 |
0 |
306 |
1374 |
1729 |
745 |
648 |
0 |
| ODI |
0 |
0 |
25 |
163 |
286 |
1599 |
3428 |
91 |
| CDI |
0 |
0 |
0 |
4 |
1 |
160 |
8770 |
3403 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
478 |
73 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
93797 |
21710 |
13731 |
1440 |
240 |
74 |
62 |
0 |
| OW |
0 |
13 |
1299 |
1859 |
511 |
320 |
165 |
0 |
| VODI |
0 |
0 |
315 |
1341 |
1661 |
823 |
669 |
0 |
| ODI |
0 |
0 |
21 |
178 |
347 |
1555 |
3532 |
0 |
| CDI |
0 |
0 |
0 |
5 |
0 |
105 |
8373 |
3473 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
755 |
94 |
|
Date: 2024-08-19:
| 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 |
97826 |
19550 |
14593 |
1080 |
265 |
136 |
43 |
0 |
| OW |
0 |
0 |
1465 |
1553 |
657 |
171 |
90 |
0 |
| VODI |
0 |
0 |
45 |
940 |
1540 |
1048 |
379 |
0 |
| ODI |
0 |
0 |
0 |
85 |
287 |
919 |
4300 |
225 |
| CDI |
0 |
0 |
0 |
0 |
4 |
38 |
5092 |
4043 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
1 |
889 |
1204 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
97826 |
19550 |
13736 |
788 |
181 |
110 |
21 |
0 |
| OW |
0 |
0 |
1754 |
1204 |
490 |
177 |
113 |
0 |
| VODI |
0 |
0 |
569 |
1422 |
1526 |
771 |
280 |
0 |
| ODI |
0 |
0 |
44 |
244 |
550 |
1209 |
3363 |
5 |
| CDI |
0 |
0 |
0 |
0 |
6 |
46 |
6571 |
5385 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
445 |
82 |
|
Date: 2024-08-21:
| 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 |
107095 |
16896 |
8574 |
1249 |
214 |
37 |
10 |
0 |
| OW |
0 |
391 |
963 |
1794 |
550 |
121 |
35 |
0 |
| VODI |
0 |
0 |
74 |
1132 |
1419 |
833 |
326 |
0 |
| ODI |
0 |
0 |
0 |
64 |
350 |
982 |
3759 |
424 |
| CDI |
0 |
0 |
0 |
19 |
40 |
73 |
4810 |
4122 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
6 |
1618 |
487 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
107095 |
16614 |
7916 |
859 |
131 |
21 |
9 |
0 |
| OW |
0 |
402 |
1202 |
1498 |
420 |
110 |
45 |
0 |
| VODI |
0 |
271 |
401 |
1614 |
1315 |
585 |
238 |
0 |
| ODI |
0 |
0 |
92 |
270 |
678 |
1247 |
2869 |
28 |
| CDI |
0 |
0 |
0 |
17 |
29 |
83 |
6811 |
4992 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
6 |
586 |
13 |
|
Date: 2024-08-23:
| 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 |
107866 |
18121 |
7102 |
904 |
399 |
50 |
17 |
0 |
| OW |
0 |
540 |
638 |
1290 |
1050 |
220 |
26 |
0 |
| VODI |
0 |
2 |
262 |
682 |
1561 |
949 |
213 |
0 |
| ODI |
0 |
0 |
0 |
45 |
349 |
1259 |
3066 |
292 |
| CDI |
0 |
0 |
0 |
14 |
43 |
92 |
5011 |
3959 |
| VCDI |
0 |
0 |
0 |
0 |
6 |
19 |
1807 |
614 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
107866 |
17666 |
6703 |
643 |
290 |
36 |
21 |
0 |
| OW |
0 |
544 |
821 |
1079 |
780 |
254 |
60 |
0 |
| VODI |
0 |
393 |
250 |
993 |
1652 |
840 |
227 |
0 |
| ODI |
0 |
60 |
228 |
208 |
618 |
1239 |
2576 |
46 |
| CDI |
0 |
0 |
0 |
12 |
65 |
202 |
6492 |
4819 |
| VCDI |
0 |
0 |
0 |
0 |
3 |
18 |
764 |
0 |
|
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