Validation of sea ice concentration
Bulletin date: 2024-02-08
Model vs. observations, sea ice class contingency tables
Date: 2024-02-02:
| 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 |
54856 |
23187 |
2044 |
735 |
283 |
2 |
1 |
0 |
| OW |
7 |
1440 |
1332 |
1138 |
461 |
59 |
34 |
0 |
| VODI |
0 |
648 |
1273 |
1136 |
581 |
377 |
187 |
0 |
| ODI |
0 |
304 |
362 |
723 |
526 |
590 |
445 |
0 |
| CDI |
0 |
636 |
525 |
1205 |
1063 |
1634 |
3656 |
37 |
| VCDI |
0 |
945 |
1225 |
1814 |
944 |
2761 |
32768 |
16524 |
|
...date precedes bulletin
|
Date: 2024-02-06:
| 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 |
54639 |
24496 |
1992 |
410 |
13 |
2 |
0 |
0 |
| OW |
3 |
1888 |
1719 |
1646 |
139 |
48 |
16 |
0 |
| VODI |
0 |
607 |
777 |
1495 |
371 |
205 |
127 |
0 |
| ODI |
0 |
311 |
350 |
1259 |
728 |
294 |
315 |
6 |
| CDI |
0 |
377 |
542 |
1702 |
1423 |
1419 |
3200 |
118 |
| VCDI |
0 |
54 |
460 |
2328 |
1353 |
4115 |
31966 |
15555 |
|
...date precedes bulletin
|
Date: 2024-02-08:
| 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 |
52361 |
25940 |
2321 |
571 |
63 |
8 |
4 |
0 |
| OW |
0 |
1107 |
2186 |
873 |
240 |
195 |
26 |
0 |
| VODI |
0 |
263 |
840 |
1342 |
674 |
472 |
154 |
0 |
| ODI |
0 |
170 |
235 |
745 |
564 |
861 |
445 |
25 |
| CDI |
0 |
124 |
216 |
773 |
827 |
2292 |
2896 |
196 |
| VCDI |
0 |
195 |
522 |
778 |
1020 |
6196 |
28845 |
20903 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
52361 |
25901 |
2380 |
584 |
70 |
15 |
5 |
0 |
| OW |
0 |
1151 |
2098 |
874 |
254 |
204 |
33 |
0 |
| VODI |
0 |
269 |
874 |
1298 |
637 |
433 |
168 |
0 |
| ODI |
0 |
177 |
266 |
758 |
563 |
788 |
423 |
26 |
| CDI |
0 |
134 |
200 |
787 |
800 |
2235 |
2941 |
191 |
| VCDI |
0 |
167 |
502 |
781 |
1064 |
6349 |
28800 |
20907 |
|
Date: 2024-02-12:
| 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 |
50986 |
24127 |
3627 |
935 |
547 |
214 |
7 |
0 |
| OW |
0 |
477 |
2560 |
1030 |
383 |
166 |
29 |
0 |
| VODI |
0 |
60 |
866 |
1046 |
1317 |
786 |
107 |
0 |
| ODI |
0 |
0 |
200 |
378 |
656 |
1350 |
526 |
1 |
| CDI |
0 |
0 |
221 |
386 |
885 |
2643 |
3590 |
130 |
| VCDI |
0 |
0 |
180 |
231 |
508 |
2534 |
28590 |
26189 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
50986 |
23966 |
3495 |
943 |
613 |
302 |
41 |
0 |
| OW |
0 |
516 |
1738 |
711 |
583 |
237 |
62 |
0 |
| VODI |
0 |
123 |
1159 |
698 |
824 |
715 |
166 |
0 |
| ODI |
0 |
52 |
371 |
453 |
476 |
1061 |
449 |
0 |
| CDI |
0 |
7 |
314 |
614 |
847 |
1972 |
3087 |
127 |
| VCDI |
0 |
0 |
577 |
587 |
953 |
3406 |
29044 |
26193 |
|
Date: 2024-02-14:
| 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 |
52674 |
24078 |
2745 |
607 |
80 |
7 |
2 |
0 |
| OW |
0 |
1090 |
1994 |
1019 |
178 |
49 |
15 |
0 |
| VODI |
0 |
211 |
1090 |
1580 |
588 |
414 |
71 |
0 |
| ODI |
0 |
56 |
333 |
632 |
567 |
719 |
265 |
0 |
| CDI |
0 |
53 |
165 |
692 |
896 |
2226 |
3044 |
7 |
| VCDI |
0 |
84 |
240 |
434 |
621 |
2661 |
33648 |
22633 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
52674 |
24007 |
2649 |
741 |
114 |
48 |
18 |
0 |
| OW |
0 |
946 |
1320 |
770 |
250 |
105 |
47 |
0 |
| VODI |
0 |
325 |
1304 |
884 |
444 |
360 |
186 |
0 |
| ODI |
0 |
104 |
570 |
731 |
352 |
588 |
442 |
0 |
| CDI |
0 |
78 |
318 |
1107 |
743 |
1731 |
2563 |
13 |
| VCDI |
0 |
112 |
406 |
731 |
1027 |
3244 |
33789 |
22627 |
|
Date: 2024-02-16:
| 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 |
55592 |
22692 |
1323 |
247 |
25 |
1 |
6 |
0 |
| OW |
2 |
1948 |
1524 |
735 |
170 |
46 |
15 |
0 |
| VODI |
0 |
706 |
1161 |
968 |
525 |
249 |
108 |
0 |
| ODI |
0 |
196 |
487 |
734 |
731 |
614 |
280 |
0 |
| CDI |
0 |
130 |
521 |
998 |
1216 |
1585 |
3149 |
19 |
| VCDI |
0 |
232 |
787 |
1140 |
1000 |
2337 |
33487 |
20782 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
55559 |
21879 |
1322 |
601 |
173 |
102 |
56 |
0 |
| OW |
27 |
1756 |
1008 |
391 |
123 |
82 |
74 |
0 |
| VODI |
8 |
950 |
980 |
666 |
320 |
185 |
133 |
0 |
| ODI |
0 |
349 |
658 |
517 |
492 |
356 |
298 |
0 |
| CDI |
0 |
521 |
609 |
776 |
935 |
1638 |
2601 |
9 |
| VCDI |
0 |
449 |
1226 |
1871 |
1624 |
2469 |
33883 |
20792 |
|
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