Validation of sea ice concentration
Bulletin date: 2024-03-21
Model vs. observations, sea ice class contingency tables
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 |
|
...date precedes bulletin
|
Date: 2024-03-19:
| 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 |
52719 |
21266 |
2490 |
548 |
259 |
21 |
2 |
0 |
| OW |
0 |
656 |
1503 |
1072 |
531 |
96 |
18 |
0 |
| VODI |
0 |
94 |
780 |
860 |
866 |
443 |
155 |
16 |
| ODI |
0 |
19 |
241 |
532 |
707 |
1099 |
541 |
39 |
| CDI |
0 |
27 |
104 |
401 |
706 |
1921 |
5041 |
123 |
| VCDI |
0 |
10 |
95 |
396 |
884 |
2628 |
29333 |
29226 |
|
...date precedes bulletin
|
Date: 2024-03-21:
| 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 |
55216 |
19267 |
2018 |
217 |
150 |
1 |
3 |
2 |
| OW |
0 |
460 |
1851 |
951 |
354 |
55 |
15 |
8 |
| VODI |
0 |
33 |
908 |
827 |
924 |
312 |
177 |
38 |
| ODI |
0 |
15 |
272 |
433 |
768 |
1158 |
447 |
102 |
| CDI |
0 |
6 |
127 |
411 |
851 |
1931 |
5241 |
510 |
| VCDI |
0 |
0 |
21 |
344 |
998 |
1644 |
23711 |
35691 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
55216 |
19244 |
1998 |
236 |
178 |
4 |
3 |
2 |
| OW |
0 |
489 |
1847 |
930 |
314 |
62 |
24 |
9 |
| VODI |
0 |
30 |
904 |
803 |
891 |
289 |
175 |
36 |
| ODI |
0 |
12 |
288 |
432 |
784 |
1171 |
470 |
118 |
| CDI |
0 |
6 |
138 |
410 |
861 |
1851 |
5463 |
537 |
| VCDI |
0 |
0 |
22 |
372 |
1017 |
1724 |
23459 |
35649 |
|
Date: 2024-03-25:
| 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 |
54936 |
19911 |
1010 |
95 |
17 |
3 |
1 |
1 |
| OW |
0 |
532 |
1691 |
598 |
247 |
46 |
7 |
7 |
| VODI |
0 |
8 |
608 |
924 |
907 |
529 |
121 |
26 |
| ODI |
0 |
6 |
158 |
488 |
687 |
1576 |
315 |
64 |
| CDI |
0 |
2 |
39 |
464 |
824 |
3431 |
2742 |
329 |
| VCDI |
0 |
0 |
16 |
164 |
491 |
3415 |
26429 |
34603 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
54936 |
19170 |
826 |
135 |
40 |
5 |
2 |
2 |
| OW |
0 |
1111 |
1124 |
578 |
439 |
138 |
51 |
12 |
| VODI |
0 |
163 |
809 |
658 |
692 |
833 |
242 |
40 |
| ODI |
0 |
7 |
398 |
433 |
474 |
1692 |
539 |
93 |
| CDI |
0 |
8 |
336 |
553 |
804 |
2661 |
4819 |
272 |
| VCDI |
0 |
0 |
29 |
376 |
724 |
3671 |
23962 |
34611 |
|
Date: 2024-03-27:
| 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 |
54216 |
20089 |
1215 |
114 |
15 |
3 |
0 |
0 |
| OW |
0 |
348 |
1567 |
620 |
247 |
63 |
16 |
0 |
| VODI |
0 |
33 |
661 |
725 |
787 |
667 |
140 |
0 |
| ODI |
0 |
12 |
243 |
303 |
550 |
1113 |
708 |
0 |
| CDI |
0 |
21 |
163 |
369 |
668 |
2404 |
6066 |
6 |
| VCDI |
0 |
0 |
68 |
159 |
281 |
1149 |
32938 |
29721 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
54216 |
19465 |
1070 |
216 |
55 |
15 |
4 |
0 |
| OW |
0 |
732 |
1292 |
573 |
397 |
218 |
52 |
0 |
| VODI |
0 |
224 |
758 |
459 |
518 |
833 |
339 |
0 |
| ODI |
0 |
47 |
392 |
405 |
460 |
959 |
1300 |
0 |
| CDI |
0 |
33 |
313 |
445 |
798 |
1730 |
6724 |
103 |
| VCDI |
0 |
2 |
92 |
192 |
320 |
1644 |
31449 |
29624 |
|
Date: 2024-03-29:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
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