Validation of sea ice concentration
Bulletin date: 2024-01-25
Model vs. observations, sea ice class contingency tables
Date: 2024-01-19:
| 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 |
54274 |
20796 |
1055 |
164 |
19 |
0 |
0 |
0 |
| OW |
0 |
1388 |
1556 |
760 |
127 |
43 |
1 |
0 |
| VODI |
0 |
333 |
1224 |
1501 |
445 |
269 |
41 |
0 |
| ODI |
0 |
106 |
481 |
1148 |
577 |
397 |
415 |
5 |
| CDI |
0 |
60 |
288 |
792 |
733 |
1075 |
2874 |
144 |
| VCDI |
0 |
2 |
71 |
306 |
544 |
1556 |
40218 |
22680 |
|
...date precedes bulletin
|
Date: 2024-01-23:
| 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 |
56686 |
20619 |
1465 |
83 |
12 |
0 |
0 |
0 |
| OW |
0 |
908 |
1811 |
485 |
153 |
9 |
3 |
0 |
| VODI |
0 |
175 |
816 |
880 |
534 |
321 |
23 |
0 |
| ODI |
0 |
58 |
404 |
822 |
682 |
632 |
149 |
0 |
| CDI |
0 |
24 |
421 |
620 |
875 |
2326 |
2348 |
10 |
| VCDI |
0 |
37 |
318 |
421 |
439 |
3194 |
31501 |
28204 |
|
...date precedes bulletin
|
Date: 2024-01-25:
| 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 |
57128 |
20510 |
1128 |
86 |
13 |
12 |
1 |
0 |
| OW |
0 |
1066 |
1235 |
484 |
79 |
13 |
16 |
0 |
| VODI |
0 |
451 |
1036 |
1315 |
530 |
131 |
96 |
0 |
| ODI |
0 |
206 |
452 |
1147 |
578 |
317 |
246 |
7 |
| CDI |
0 |
219 |
653 |
976 |
815 |
1396 |
3064 |
143 |
| VCDI |
0 |
200 |
384 |
851 |
650 |
2642 |
37516 |
20676 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
57128 |
20665 |
1238 |
90 |
9 |
7 |
0 |
0 |
| OW |
0 |
940 |
1174 |
513 |
69 |
19 |
14 |
0 |
| VODI |
0 |
435 |
968 |
1277 |
519 |
132 |
89 |
0 |
| ODI |
0 |
201 |
477 |
1101 |
593 |
292 |
235 |
7 |
| CDI |
0 |
214 |
659 |
1045 |
838 |
1403 |
3106 |
143 |
| VCDI |
0 |
197 |
372 |
833 |
637 |
2658 |
37495 |
20676 |
|
Date: 2024-01-29:
| 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 |
59769 |
19883 |
1208 |
229 |
25 |
2 |
4 |
0 |
| OW |
0 |
1582 |
2180 |
1312 |
184 |
52 |
21 |
0 |
| VODI |
0 |
281 |
667 |
1467 |
634 |
168 |
105 |
5 |
| ODI |
0 |
183 |
229 |
649 |
656 |
407 |
276 |
42 |
| CDI |
0 |
323 |
838 |
1127 |
757 |
1278 |
1530 |
178 |
| VCDI |
0 |
21 |
286 |
1130 |
930 |
2447 |
32421 |
22982 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59769 |
19465 |
931 |
173 |
17 |
2 |
0 |
0 |
| OW |
0 |
1178 |
1179 |
440 |
54 |
18 |
8 |
0 |
| VODI |
0 |
566 |
1111 |
1335 |
382 |
128 |
78 |
8 |
| ODI |
0 |
254 |
576 |
1032 |
576 |
219 |
228 |
45 |
| CDI |
0 |
472 |
647 |
1021 |
914 |
1018 |
985 |
198 |
| VCDI |
0 |
338 |
964 |
1913 |
1243 |
2969 |
33058 |
22956 |
|
Date: 2024-01-31:
| 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 |
59881 |
20278 |
1679 |
148 |
15 |
7 |
4 |
0 |
| OW |
0 |
1925 |
1660 |
626 |
166 |
78 |
32 |
0 |
| VODI |
0 |
604 |
1138 |
1009 |
470 |
221 |
200 |
0 |
| ODI |
0 |
304 |
283 |
602 |
522 |
422 |
412 |
4 |
| CDI |
0 |
506 |
826 |
1088 |
772 |
1146 |
2354 |
49 |
| VCDI |
0 |
333 |
1075 |
1687 |
1159 |
2469 |
34621 |
17693 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59865 |
18871 |
1338 |
159 |
54 |
22 |
4 |
0 |
| OW |
16 |
1444 |
884 |
266 |
60 |
74 |
20 |
0 |
| VODI |
0 |
991 |
1151 |
667 |
296 |
130 |
107 |
0 |
| ODI |
0 |
652 |
823 |
730 |
361 |
210 |
350 |
16 |
| CDI |
0 |
1368 |
989 |
1260 |
969 |
1153 |
2287 |
54 |
| VCDI |
0 |
624 |
1476 |
2078 |
1364 |
2754 |
34855 |
17676 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
54788 |
21150 |
1759 |
1185 |
661 |
216 |
12 |
0 |
| OW |
52 |
1494 |
692 |
316 |
183 |
169 |
44 |
0 |
| VODI |
23 |
1095 |
1067 |
649 |
326 |
287 |
124 |
0 |
| ODI |
0 |
583 |
915 |
746 |
355 |
348 |
292 |
0 |
| CDI |
0 |
1344 |
715 |
1083 |
720 |
1169 |
2038 |
0 |
| VCDI |
0 |
1494 |
1613 |
2772 |
1613 |
3234 |
34581 |
16561 |
|
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