Validation of sea ice concentration
Bulletin date: 2024-08-22
Model vs. observations, sea ice class contingency tables
Date: 2024-08-16:
| 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 |
94273 |
22349 |
12849 |
1204 |
218 |
60 |
48 |
0 |
| OW |
0 |
0 |
1239 |
2051 |
605 |
267 |
187 |
0 |
| VODI |
0 |
0 |
260 |
1292 |
1745 |
791 |
640 |
0 |
| ODI |
0 |
0 |
17 |
135 |
262 |
1562 |
3562 |
104 |
| CDI |
0 |
0 |
0 |
7 |
1 |
207 |
8719 |
3091 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
628 |
95 |
|
...date precedes bulletin
|
Date: 2024-08-20:
| 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 |
97955 |
20330 |
14061 |
1028 |
242 |
121 |
38 |
0 |
| OW |
0 |
31 |
1373 |
1594 |
644 |
187 |
71 |
0 |
| VODI |
0 |
0 |
71 |
825 |
1455 |
1073 |
441 |
0 |
| ODI |
0 |
0 |
0 |
78 |
250 |
872 |
4049 |
446 |
| CDI |
0 |
0 |
0 |
0 |
12 |
40 |
4629 |
3948 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
4 |
1522 |
1078 |
|
...date precedes bulletin
|
Date: 2024-08-22:
| 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 |
106361 |
18508 |
8052 |
1153 |
200 |
35 |
14 |
0 |
| OW |
0 |
606 |
691 |
1818 |
510 |
146 |
26 |
0 |
| VODI |
0 |
0 |
158 |
1235 |
1328 |
762 |
242 |
0 |
| ODI |
0 |
0 |
0 |
87 |
419 |
920 |
3538 |
390 |
| CDI |
0 |
0 |
0 |
17 |
54 |
84 |
5158 |
4118 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
12 |
1405 |
420 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
106361 |
18643 |
8176 |
1318 |
235 |
44 |
13 |
0 |
| OW |
0 |
471 |
567 |
1684 |
529 |
150 |
23 |
0 |
| VODI |
0 |
0 |
158 |
1170 |
1238 |
769 |
273 |
0 |
| ODI |
0 |
0 |
0 |
124 |
454 |
908 |
3628 |
377 |
| CDI |
0 |
0 |
0 |
14 |
55 |
76 |
4840 |
4076 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
12 |
1606 |
475 |
|
Date: 2024-08-26:
| 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 |
111885 |
16186 |
7100 |
557 |
147 |
26 |
8 |
0 |
| OW |
0 |
60 |
964 |
930 |
982 |
130 |
15 |
0 |
| VODI |
0 |
0 |
76 |
767 |
1706 |
592 |
199 |
0 |
| ODI |
0 |
0 |
1 |
83 |
370 |
1800 |
1315 |
0 |
| CDI |
0 |
0 |
0 |
13 |
22 |
218 |
7224 |
2489 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
25 |
1932 |
646 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
111885 |
16000 |
6857 |
603 |
203 |
29 |
6 |
0 |
| OW |
0 |
246 |
890 |
863 |
1053 |
130 |
31 |
0 |
| VODI |
0 |
0 |
391 |
746 |
1495 |
573 |
219 |
0 |
| ODI |
0 |
0 |
3 |
127 |
449 |
1847 |
1697 |
0 |
| CDI |
0 |
0 |
0 |
11 |
27 |
212 |
8289 |
2445 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
451 |
690 |
|
Date: 2024-08-28:
| 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 |
113460 |
17242 |
3960 |
755 |
206 |
12 |
7 |
0 |
| OW |
0 |
294 |
692 |
1204 |
957 |
100 |
16 |
0 |
| VODI |
0 |
5 |
108 |
892 |
1440 |
638 |
201 |
0 |
| ODI |
0 |
0 |
0 |
337 |
446 |
1304 |
1654 |
0 |
| CDI |
0 |
0 |
0 |
25 |
50 |
437 |
7031 |
2455 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
26 |
1994 |
520 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
113460 |
16907 |
3896 |
902 |
280 |
12 |
8 |
0 |
| OW |
0 |
570 |
519 |
1000 |
1085 |
101 |
28 |
0 |
| VODI |
0 |
64 |
343 |
969 |
1242 |
598 |
222 |
0 |
| ODI |
0 |
0 |
2 |
308 |
432 |
1530 |
2274 |
0 |
| CDI |
0 |
0 |
0 |
34 |
60 |
275 |
8300 |
2489 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
1 |
71 |
486 |
|
Date: 2024-08-30:
| 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 |
114142 |
16819 |
3441 |
537 |
198 |
17 |
9 |
0 |
| OW |
8 |
495 |
749 |
1263 |
773 |
192 |
22 |
0 |
| VODI |
1 |
66 |
224 |
1178 |
1111 |
662 |
194 |
0 |
| ODI |
0 |
0 |
0 |
153 |
458 |
822 |
2212 |
10 |
| CDI |
0 |
0 |
0 |
23 |
26 |
440 |
5671 |
3281 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
36 |
2452 |
783 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
114141 |
16430 |
3504 |
726 |
186 |
24 |
6 |
0 |
| OW |
6 |
705 |
557 |
1143 |
950 |
223 |
39 |
0 |
| VODI |
4 |
241 |
316 |
1074 |
890 |
661 |
221 |
0 |
| ODI |
0 |
4 |
37 |
188 |
515 |
899 |
2676 |
0 |
| CDI |
0 |
0 |
0 |
23 |
25 |
338 |
6897 |
3530 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
24 |
721 |
544 |
|
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