Validation of sea ice concentration
Bulletin date: 2024-08-08
Model vs. observations, sea ice class contingency tables
Date: 2024-08-02:
| 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 |
88220 |
17609 |
16124 |
2083 |
750 |
65 |
92 |
0 |
| OW |
0 |
412 |
1459 |
1606 |
1152 |
280 |
201 |
0 |
| VODI |
0 |
18 |
630 |
1612 |
1854 |
1375 |
661 |
0 |
| ODI |
0 |
0 |
58 |
278 |
511 |
1803 |
4110 |
0 |
| CDI |
0 |
0 |
0 |
16 |
32 |
379 |
10952 |
3749 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
377 |
0 |
|
...date precedes bulletin
|
Date: 2024-08-06:
| 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 |
91025 |
22409 |
11402 |
1610 |
194 |
44 |
68 |
0 |
| OW |
0 |
264 |
1503 |
2012 |
824 |
268 |
176 |
0 |
| VODI |
0 |
0 |
282 |
1502 |
1614 |
1411 |
514 |
0 |
| ODI |
0 |
0 |
18 |
158 |
719 |
2090 |
4108 |
0 |
| CDI |
0 |
0 |
3 |
24 |
153 |
652 |
11236 |
1735 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
443 |
7 |
|
...date precedes bulletin
|
Date: 2024-08-08:
| 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 |
90829 |
22508 |
11928 |
1578 |
243 |
26 |
70 |
0 |
| OW |
0 |
134 |
1552 |
2206 |
693 |
245 |
253 |
0 |
| VODI |
0 |
0 |
261 |
1417 |
1440 |
1296 |
594 |
0 |
| ODI |
0 |
0 |
15 |
214 |
817 |
1839 |
4040 |
0 |
| CDI |
0 |
0 |
0 |
10 |
139 |
699 |
10464 |
1638 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
20 |
1257 |
43 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
90829 |
22489 |
12052 |
1818 |
273 |
35 |
103 |
0 |
| OW |
0 |
153 |
1397 |
1925 |
760 |
337 |
234 |
0 |
| VODI |
0 |
0 |
285 |
1452 |
1295 |
1111 |
585 |
0 |
| ODI |
0 |
0 |
21 |
211 |
839 |
1959 |
5057 |
3 |
| CDI |
0 |
0 |
1 |
19 |
165 |
666 |
9365 |
1599 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
17 |
1334 |
79 |
|
Date: 2024-08-12:
| 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 |
92755 |
22034 |
13153 |
1702 |
176 |
31 |
37 |
0 |
| OW |
0 |
2 |
1399 |
2400 |
756 |
143 |
105 |
0 |
| VODI |
0 |
0 |
135 |
1129 |
1504 |
1305 |
405 |
0 |
| ODI |
0 |
0 |
1 |
79 |
259 |
2216 |
3025 |
163 |
| CDI |
0 |
0 |
0 |
1 |
9 |
41 |
6839 |
4961 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
912 |
791 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
92755 |
21870 |
12513 |
1285 |
137 |
16 |
42 |
0 |
| OW |
0 |
166 |
1502 |
2347 |
661 |
224 |
126 |
0 |
| VODI |
0 |
0 |
599 |
1241 |
1182 |
882 |
448 |
0 |
| ODI |
0 |
0 |
74 |
436 |
712 |
2399 |
2641 |
995 |
| CDI |
0 |
0 |
0 |
2 |
12 |
215 |
7475 |
4650 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
591 |
270 |
|
Date: 2024-08-14:
| 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 |
93591 |
21928 |
13143 |
1304 |
212 |
51 |
61 |
0 |
| OW |
0 |
1 |
1407 |
2348 |
628 |
250 |
144 |
0 |
| VODI |
0 |
0 |
146 |
1616 |
1581 |
1001 |
438 |
0 |
| ODI |
0 |
0 |
0 |
172 |
218 |
1631 |
3635 |
78 |
| CDI |
0 |
0 |
0 |
6 |
17 |
152 |
8305 |
3955 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
378 |
71 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
93591 |
21791 |
12355 |
920 |
154 |
33 |
51 |
0 |
| OW |
0 |
138 |
1482 |
2438 |
623 |
266 |
132 |
0 |
| VODI |
0 |
0 |
709 |
1498 |
1272 |
578 |
370 |
0 |
| ODI |
0 |
0 |
150 |
585 |
587 |
1937 |
3966 |
397 |
| CDI |
0 |
0 |
0 |
5 |
20 |
271 |
8169 |
3707 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
273 |
0 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
94273 |
22199 |
11657 |
696 |
166 |
66 |
47 |
0 |
| OW |
0 |
150 |
1601 |
2144 |
621 |
266 |
224 |
0 |
| VODI |
0 |
0 |
734 |
1408 |
1175 |
605 |
549 |
0 |
| ODI |
0 |
0 |
373 |
433 |
867 |
1596 |
3915 |
328 |
| CDI |
0 |
0 |
0 |
8 |
2 |
354 |
8367 |
2438 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
682 |
524 |
|
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