Validation of sea ice concentration
Bulletin date: 2024-04-11
Model vs. observations, sea ice class contingency tables
Date: 2024-04-05:
| 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 |
52862 |
18979 |
1059 |
105 |
1 |
0 |
0 |
0 |
| OW |
0 |
615 |
1609 |
538 |
115 |
16 |
5 |
0 |
| VODI |
0 |
83 |
1061 |
951 |
839 |
431 |
134 |
0 |
| ODI |
0 |
4 |
359 |
475 |
887 |
1523 |
449 |
0 |
| CDI |
0 |
0 |
189 |
408 |
807 |
3048 |
6193 |
36 |
| VCDI |
0 |
0 |
20 |
22 |
191 |
1393 |
29300 |
33761 |
|
...date precedes bulletin
|
Date: 2024-04-09:
| 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 |
53011 |
19262 |
1536 |
67 |
14 |
8 |
1 |
0 |
| OW |
0 |
229 |
1831 |
630 |
105 |
37 |
18 |
0 |
| VODI |
0 |
6 |
586 |
1035 |
711 |
663 |
133 |
0 |
| ODI |
0 |
0 |
145 |
400 |
468 |
1412 |
895 |
2 |
| CDI |
0 |
0 |
126 |
445 |
522 |
1860 |
4959 |
54 |
| VCDI |
0 |
0 |
4 |
87 |
241 |
762 |
29433 |
36770 |
|
...date precedes bulletin
|
Date: 2024-04-11:
| 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 |
52962 |
19777 |
1007 |
130 |
12 |
4 |
2 |
0 |
| OW |
0 |
650 |
1368 |
686 |
98 |
49 |
19 |
0 |
| VODI |
0 |
28 |
794 |
1026 |
544 |
540 |
294 |
0 |
| ODI |
0 |
11 |
228 |
515 |
428 |
853 |
1215 |
0 |
| CDI |
0 |
20 |
188 |
420 |
760 |
1311 |
5232 |
11 |
| VCDI |
0 |
0 |
2 |
63 |
212 |
1058 |
37239 |
28712 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
52962 |
19705 |
1014 |
170 |
22 |
4 |
4 |
0 |
| OW |
0 |
718 |
1377 |
619 |
99 |
72 |
28 |
0 |
| VODI |
0 |
32 |
777 |
1029 |
502 |
468 |
310 |
0 |
| ODI |
0 |
8 |
232 |
551 |
476 |
901 |
1173 |
0 |
| CDI |
0 |
23 |
186 |
415 |
764 |
1377 |
5584 |
14 |
| VCDI |
0 |
0 |
1 |
56 |
191 |
993 |
36902 |
28709 |
|
Date: 2024-04-15:
| 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 |
53574 |
18116 |
1697 |
283 |
44 |
10 |
2 |
0 |
| OW |
0 |
517 |
2038 |
535 |
341 |
188 |
5 |
0 |
| VODI |
0 |
53 |
896 |
864 |
928 |
680 |
82 |
0 |
| ODI |
0 |
21 |
308 |
431 |
849 |
1604 |
1059 |
14 |
| CDI |
0 |
16 |
280 |
460 |
687 |
1433 |
4963 |
47 |
| VCDI |
0 |
0 |
4 |
85 |
332 |
599 |
31110 |
33313 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
53574 |
17622 |
1248 |
278 |
64 |
3 |
1 |
0 |
| OW |
0 |
809 |
1509 |
394 |
312 |
121 |
10 |
0 |
| VODI |
0 |
194 |
1282 |
693 |
745 |
563 |
146 |
0 |
| ODI |
0 |
32 |
591 |
443 |
753 |
1384 |
910 |
4 |
| CDI |
0 |
66 |
534 |
672 |
814 |
1485 |
4997 |
74 |
| VCDI |
0 |
0 |
59 |
178 |
493 |
958 |
31157 |
33296 |
|
Date: 2024-04-17:
| 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 |
53351 |
18118 |
1700 |
118 |
14 |
2 |
1 |
0 |
| OW |
0 |
692 |
1594 |
741 |
153 |
61 |
5 |
0 |
| VODI |
0 |
82 |
610 |
1303 |
1002 |
596 |
56 |
0 |
| ODI |
0 |
12 |
228 |
538 |
1114 |
1602 |
502 |
2 |
| CDI |
0 |
11 |
146 |
495 |
1077 |
2100 |
5376 |
27 |
| VCDI |
0 |
0 |
1 |
107 |
202 |
1306 |
31599 |
31824 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
53351 |
17525 |
1144 |
100 |
11 |
3 |
1 |
0 |
| OW |
0 |
982 |
1422 |
522 |
93 |
25 |
13 |
0 |
| VODI |
0 |
291 |
853 |
1143 |
843 |
580 |
86 |
0 |
| ODI |
0 |
88 |
480 |
641 |
942 |
1346 |
557 |
3 |
| CDI |
0 |
29 |
361 |
746 |
1410 |
2221 |
5748 |
47 |
| VCDI |
0 |
0 |
19 |
150 |
263 |
1492 |
31134 |
31803 |
|
Date: 2024-04-19:
| 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 |
53292 |
18320 |
1431 |
154 |
61 |
0 |
1 |
0 |
| OW |
0 |
385 |
1692 |
732 |
183 |
48 |
1 |
0 |
| VODI |
0 |
130 |
620 |
1105 |
943 |
720 |
26 |
0 |
| ODI |
0 |
78 |
329 |
574 |
841 |
1829 |
341 |
4 |
| CDI |
0 |
37 |
516 |
397 |
724 |
1814 |
6213 |
70 |
| VCDI |
0 |
2 |
198 |
256 |
230 |
592 |
29626 |
33953 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
53292 |
17800 |
965 |
180 |
61 |
2 |
0 |
0 |
| OW |
0 |
685 |
1622 |
558 |
197 |
31 |
3 |
0 |
| VODI |
0 |
204 |
844 |
931 |
883 |
842 |
45 |
0 |
| ODI |
0 |
151 |
442 |
681 |
676 |
1552 |
431 |
2 |
| CDI |
0 |
109 |
742 |
765 |
915 |
1910 |
6951 |
54 |
| VCDI |
0 |
3 |
171 |
103 |
250 |
666 |
28778 |
33971 |
|
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