Validation of sea ice concentration
Bulletin date: 2024-03-07
Model vs. observations, sea ice class contingency tables
Date: 2024-03-01:
| 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 |
58840 |
21621 |
862 |
292 |
3 |
3 |
6 |
0 |
| OW |
0 |
1798 |
1199 |
729 |
84 |
25 |
54 |
0 |
| VODI |
0 |
642 |
1257 |
1080 |
287 |
87 |
131 |
0 |
| ODI |
0 |
281 |
733 |
930 |
524 |
197 |
254 |
0 |
| CDI |
0 |
271 |
982 |
1288 |
1081 |
1387 |
3606 |
0 |
| VCDI |
0 |
86 |
623 |
1213 |
881 |
1959 |
36678 |
16494 |
|
...date precedes bulletin
|
Date: 2024-03-05:
| 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 |
56903 |
22149 |
1614 |
348 |
75 |
4 |
0 |
0 |
| OW |
0 |
707 |
1652 |
1057 |
217 |
44 |
21 |
0 |
| VODI |
0 |
249 |
825 |
1508 |
790 |
313 |
200 |
0 |
| ODI |
0 |
139 |
379 |
1089 |
884 |
892 |
638 |
0 |
| CDI |
0 |
86 |
312 |
1103 |
1209 |
2226 |
5940 |
4 |
| VCDI |
0 |
10 |
40 |
270 |
457 |
3605 |
33527 |
16982 |
|
...date precedes bulletin
|
Date: 2024-03-07:
| 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 |
57516 |
21366 |
1408 |
125 |
13 |
3 |
1 |
0 |
| OW |
0 |
1036 |
1685 |
598 |
270 |
69 |
26 |
0 |
| VODI |
0 |
294 |
1416 |
829 |
866 |
479 |
181 |
0 |
| ODI |
0 |
91 |
610 |
739 |
885 |
1043 |
765 |
20 |
| CDI |
0 |
33 |
510 |
749 |
967 |
2061 |
7452 |
276 |
| VCDI |
0 |
0 |
98 |
207 |
538 |
1175 |
25792 |
26276 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
57516 |
21298 |
1383 |
138 |
15 |
2 |
2 |
0 |
| OW |
0 |
1074 |
1667 |
563 |
216 |
46 |
27 |
0 |
| VODI |
0 |
329 |
1428 |
871 |
916 |
485 |
223 |
0 |
| ODI |
0 |
87 |
658 |
711 |
841 |
1057 |
725 |
30 |
| CDI |
0 |
32 |
505 |
775 |
1022 |
2061 |
7918 |
273 |
| VCDI |
0 |
0 |
86 |
189 |
529 |
1179 |
25322 |
26269 |
|
Date: 2024-03-11:
| 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 |
56198 |
20480 |
1783 |
273 |
71 |
7 |
2 |
0 |
| OW |
27 |
901 |
2202 |
960 |
292 |
31 |
34 |
0 |
| VODI |
0 |
49 |
1093 |
1398 |
1176 |
558 |
99 |
0 |
| ODI |
0 |
7 |
247 |
618 |
1006 |
1781 |
827 |
6 |
| CDI |
0 |
2 |
140 |
336 |
593 |
2396 |
7132 |
27 |
| VCDI |
0 |
0 |
13 |
95 |
177 |
1074 |
29236 |
25121 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
56225 |
20098 |
1552 |
207 |
65 |
4 |
1 |
0 |
| OW |
0 |
944 |
1621 |
817 |
342 |
45 |
30 |
0 |
| VODI |
0 |
332 |
1256 |
1102 |
923 |
790 |
129 |
0 |
| ODI |
0 |
55 |
597 |
726 |
771 |
1383 |
1036 |
1 |
| CDI |
0 |
10 |
357 |
624 |
965 |
2447 |
9778 |
27 |
| VCDI |
0 |
0 |
95 |
204 |
249 |
1178 |
26356 |
25126 |
|
Date: 2024-03-13:
| 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 |
55875 |
20794 |
1388 |
354 |
82 |
20 |
2 |
0 |
| OW |
10 |
1169 |
1473 |
947 |
421 |
88 |
30 |
0 |
| VODI |
0 |
109 |
860 |
921 |
1036 |
818 |
146 |
0 |
| ODI |
0 |
0 |
231 |
443 |
524 |
1806 |
737 |
5 |
| CDI |
0 |
0 |
38 |
365 |
465 |
1897 |
7105 |
61 |
| VCDI |
0 |
0 |
12 |
198 |
301 |
1421 |
32157 |
24159 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
55885 |
20013 |
1125 |
328 |
95 |
18 |
1 |
0 |
| OW |
0 |
1358 |
1138 |
769 |
425 |
242 |
20 |
0 |
| VODI |
0 |
600 |
973 |
796 |
719 |
1020 |
198 |
0 |
| ODI |
0 |
99 |
582 |
603 |
720 |
1248 |
1232 |
0 |
| CDI |
0 |
2 |
179 |
520 |
556 |
2035 |
8586 |
20 |
| VCDI |
0 |
0 |
5 |
212 |
314 |
1487 |
30140 |
24205 |
|
Date: 2024-03-15:
| 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 |
55773 |
19918 |
1471 |
318 |
47 |
28 |
2 |
1 |
| OW |
0 |
951 |
1587 |
1079 |
262 |
169 |
14 |
2 |
| VODI |
0 |
110 |
1098 |
1159 |
813 |
716 |
99 |
6 |
| ODI |
0 |
19 |
218 |
500 |
650 |
1541 |
425 |
65 |
| CDI |
0 |
18 |
129 |
288 |
486 |
2287 |
5816 |
330 |
| VCDI |
0 |
5 |
65 |
488 |
721 |
1801 |
29668 |
27325 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
55773 |
19390 |
1507 |
431 |
108 |
53 |
3 |
0 |
| OW |
0 |
1093 |
1281 |
766 |
334 |
256 |
28 |
4 |
| VODI |
0 |
461 |
1100 |
894 |
732 |
659 |
165 |
21 |
| ODI |
0 |
49 |
476 |
775 |
568 |
1261 |
678 |
81 |
| CDI |
0 |
18 |
144 |
529 |
705 |
2463 |
6256 |
325 |
| VCDI |
0 |
10 |
60 |
437 |
532 |
1850 |
28894 |
27298 |
|
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