Validation of sea ice concentration
Bulletin date: 2024-09-12
Model vs. observations, sea ice class contingency tables
Date: 2024-09-06:
| 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 |
113814 |
17402 |
3031 |
710 |
242 |
37 |
4 |
0 |
| OW |
5 |
349 |
910 |
1123 |
1089 |
119 |
11 |
0 |
| VODI |
0 |
0 |
109 |
518 |
1385 |
647 |
73 |
0 |
| ODI |
0 |
0 |
2 |
171 |
352 |
1478 |
950 |
0 |
| CDI |
0 |
0 |
0 |
5 |
79 |
352 |
5171 |
3375 |
| VCDI |
0 |
0 |
0 |
0 |
6 |
28 |
2734 |
2187 |
|
...date precedes bulletin
|
Date: 2024-09-10:
| 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 |
113649 |
16753 |
2904 |
1683 |
132 |
4 |
3 |
0 |
| OW |
3 |
51 |
259 |
1489 |
382 |
11 |
6 |
0 |
| VODI |
0 |
2 |
92 |
1142 |
1149 |
152 |
51 |
0 |
| ODI |
0 |
0 |
2 |
271 |
604 |
1259 |
594 |
0 |
| CDI |
0 |
0 |
0 |
53 |
170 |
783 |
6011 |
3875 |
| VCDI |
0 |
0 |
0 |
5 |
3 |
85 |
2756 |
2080 |
|
...date precedes bulletin
|
Date: 2024-09-12:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2024-09-16:
| 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 |
113331 |
17668 |
2659 |
845 |
445 |
47 |
0 |
0 |
| OW |
0 |
201 |
614 |
552 |
324 |
84 |
8 |
0 |
| VODI |
0 |
3 |
334 |
644 |
833 |
380 |
138 |
0 |
| ODI |
0 |
0 |
2 |
135 |
428 |
1104 |
570 |
3 |
| CDI |
0 |
0 |
0 |
22 |
86 |
437 |
5859 |
2244 |
| VCDI |
0 |
0 |
0 |
0 |
3 |
16 |
3101 |
5348 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
113331 |
17698 |
2773 |
908 |
454 |
44 |
2 |
0 |
| OW |
0 |
144 |
636 |
798 |
638 |
194 |
8 |
0 |
| VODI |
0 |
30 |
145 |
368 |
735 |
536 |
187 |
0 |
| ODI |
0 |
0 |
55 |
101 |
207 |
697 |
628 |
0 |
| CDI |
0 |
0 |
0 |
23 |
85 |
580 |
5482 |
55 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
17 |
3369 |
7540 |
|
Date: 2024-09-18:
| 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 |
88821 |
20400 |
2312 |
1116 |
218 |
10 |
0 |
0 |
| OW |
0 |
355 |
466 |
869 |
300 |
30 |
13 |
0 |
| VODI |
0 |
30 |
302 |
628 |
703 |
506 |
125 |
0 |
| ODI |
0 |
0 |
11 |
186 |
328 |
710 |
637 |
0 |
| CDI |
0 |
0 |
0 |
38 |
88 |
456 |
4426 |
528 |
| VCDI |
0 |
0 |
0 |
7 |
32 |
39 |
4434 |
7396 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
88821 |
20526 |
2517 |
1265 |
258 |
18 |
1 |
0 |
| OW |
0 |
229 |
431 |
1061 |
558 |
175 |
10 |
0 |
| VODI |
0 |
30 |
143 |
355 |
499 |
548 |
285 |
0 |
| ODI |
0 |
0 |
0 |
113 |
250 |
441 |
664 |
0 |
| CDI |
0 |
0 |
0 |
43 |
80 |
554 |
3503 |
38 |
| VCDI |
0 |
0 |
0 |
7 |
24 |
15 |
5172 |
7886 |
|
Date: 2024-09-20:
| 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 |
110237 |
21331 |
2186 |
1212 |
28 |
0 |
1 |
0 |
| OW |
0 |
470 |
374 |
1068 |
179 |
27 |
7 |
0 |
| VODI |
0 |
92 |
230 |
750 |
512 |
317 |
179 |
0 |
| ODI |
0 |
0 |
18 |
310 |
277 |
383 |
583 |
0 |
| CDI |
0 |
0 |
0 |
89 |
107 |
392 |
3764 |
4 |
| VCDI |
0 |
0 |
0 |
14 |
54 |
45 |
5074 |
8154 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
110237 |
21361 |
2271 |
1296 |
72 |
46 |
3 |
0 |
| OW |
0 |
450 |
342 |
1187 |
288 |
147 |
108 |
0 |
| VODI |
0 |
82 |
194 |
685 |
413 |
234 |
346 |
0 |
| ODI |
0 |
0 |
1 |
186 |
251 |
385 |
649 |
0 |
| CDI |
0 |
0 |
0 |
75 |
100 |
321 |
3484 |
16 |
| VCDI |
0 |
0 |
0 |
14 |
33 |
31 |
5018 |
8142 |
|
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