Validation of sea ice concentration
Bulletin date: 2024-03-14
Model vs. observations, sea ice class contingency tables
Date: 2024-03-08:
| 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 |
57669 |
20655 |
1267 |
112 |
13 |
1 |
2 |
0 |
| OW |
0 |
1109 |
1633 |
789 |
203 |
74 |
24 |
0 |
| VODI |
0 |
430 |
1157 |
1055 |
865 |
602 |
118 |
0 |
| ODI |
0 |
91 |
629 |
723 |
812 |
1439 |
645 |
23 |
| CDI |
0 |
28 |
480 |
650 |
961 |
2262 |
8214 |
157 |
| VCDI |
0 |
6 |
100 |
206 |
389 |
1002 |
26270 |
25603 |
|
...date precedes bulletin
|
Date: 2024-03-12:
| 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 |
56081 |
20754 |
1545 |
285 |
53 |
11 |
3 |
0 |
| OW |
25 |
1062 |
2057 |
848 |
306 |
88 |
19 |
0 |
| VODI |
0 |
68 |
930 |
1173 |
1211 |
640 |
131 |
0 |
| ODI |
0 |
20 |
222 |
415 |
821 |
1847 |
758 |
4 |
| CDI |
0 |
7 |
110 |
343 |
480 |
1814 |
6698 |
68 |
| VCDI |
0 |
0 |
15 |
123 |
235 |
1137 |
31195 |
24866 |
|
...date precedes bulletin
|
Date: 2024-03-14:
| 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 |
55933 |
20390 |
1379 |
352 |
68 |
29 |
3 |
0 |
| OW |
0 |
1029 |
1526 |
864 |
449 |
94 |
61 |
5 |
| VODI |
0 |
111 |
1020 |
1060 |
964 |
542 |
237 |
12 |
| ODI |
0 |
0 |
299 |
435 |
743 |
1130 |
876 |
23 |
| CDI |
0 |
0 |
178 |
400 |
690 |
1252 |
6630 |
133 |
| VCDI |
0 |
0 |
138 |
299 |
535 |
1642 |
32050 |
24887 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
55933 |
20396 |
1397 |
308 |
63 |
30 |
5 |
0 |
| OW |
0 |
1020 |
1532 |
900 |
399 |
85 |
50 |
5 |
| VODI |
0 |
114 |
982 |
1077 |
1003 |
549 |
265 |
11 |
| ODI |
0 |
0 |
306 |
436 |
793 |
1182 |
913 |
22 |
| CDI |
0 |
0 |
174 |
383 |
707 |
1215 |
6226 |
180 |
| VCDI |
0 |
0 |
149 |
306 |
484 |
1628 |
32398 |
24842 |
|
Date: 2024-03-18:
| 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 |
52641 |
21488 |
2427 |
625 |
88 |
12 |
0 |
2 |
| OW |
0 |
743 |
1309 |
1300 |
485 |
155 |
42 |
8 |
| VODI |
0 |
80 |
625 |
1167 |
880 |
470 |
224 |
70 |
| ODI |
0 |
9 |
170 |
592 |
685 |
1308 |
445 |
122 |
| CDI |
0 |
16 |
97 |
540 |
636 |
2049 |
4289 |
341 |
| VCDI |
0 |
0 |
28 |
432 |
998 |
2332 |
29075 |
29463 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
52641 |
21105 |
2011 |
558 |
91 |
13 |
1 |
2 |
| OW |
0 |
947 |
1352 |
1183 |
357 |
134 |
46 |
10 |
| VODI |
0 |
194 |
782 |
1202 |
886 |
520 |
163 |
89 |
| ODI |
0 |
43 |
226 |
534 |
629 |
1575 |
527 |
149 |
| CDI |
0 |
33 |
195 |
542 |
659 |
1657 |
5876 |
757 |
| VCDI |
0 |
14 |
90 |
637 |
1150 |
2427 |
27462 |
28999 |
|
Date: 2024-03-20:
| 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 |
54511 |
19467 |
2723 |
322 |
47 |
9 |
1 |
0 |
| OW |
0 |
311 |
1745 |
1205 |
338 |
140 |
15 |
0 |
| VODI |
0 |
42 |
799 |
1042 |
685 |
506 |
135 |
0 |
| ODI |
0 |
16 |
215 |
633 |
547 |
1166 |
522 |
0 |
| CDI |
0 |
12 |
98 |
530 |
731 |
1878 |
5669 |
87 |
| VCDI |
0 |
0 |
11 |
288 |
847 |
1957 |
25803 |
33415 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
54511 |
19160 |
1935 |
345 |
82 |
23 |
1 |
0 |
| OW |
0 |
534 |
1840 |
1114 |
320 |
163 |
28 |
0 |
| VODI |
0 |
86 |
1050 |
940 |
797 |
703 |
234 |
0 |
| ODI |
0 |
33 |
424 |
558 |
353 |
1392 |
689 |
4 |
| CDI |
0 |
28 |
255 |
614 |
721 |
1376 |
5692 |
86 |
| VCDI |
0 |
7 |
87 |
449 |
922 |
1999 |
25501 |
33412 |
|
Date: 2024-03-22:
| 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 |
55336 |
19580 |
1447 |
125 |
56 |
30 |
3 |
0 |
| OW |
0 |
653 |
1668 |
732 |
247 |
145 |
22 |
0 |
| VODI |
0 |
113 |
1003 |
800 |
616 |
595 |
216 |
0 |
| ODI |
0 |
31 |
407 |
460 |
583 |
1196 |
839 |
0 |
| CDI |
0 |
16 |
313 |
503 |
636 |
1352 |
6008 |
25 |
| VCDI |
0 |
0 |
34 |
407 |
793 |
1609 |
25396 |
34473 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
55336 |
18894 |
1622 |
389 |
215 |
70 |
2 |
0 |
| OW |
0 |
1185 |
1276 |
691 |
427 |
297 |
18 |
0 |
| VODI |
0 |
229 |
817 |
587 |
490 |
1026 |
410 |
0 |
| ODI |
0 |
72 |
572 |
329 |
360 |
845 |
1154 |
2 |
| CDI |
0 |
13 |
475 |
521 |
596 |
1092 |
5551 |
66 |
| VCDI |
0 |
0 |
110 |
510 |
843 |
1597 |
25349 |
34430 |
|
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