Validation of sea ice concentration
Bulletin date: 2024-04-25
Model vs. observations, sea ice class contingency tables
Date: 2024-04-19:
| 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 |
53292 |
18320 |
1431 |
154 |
61 |
0 |
1 |
0 |
| OW |
0 |
385 |
1692 |
732 |
183 |
48 |
1 |
0 |
| VODI |
0 |
130 |
620 |
1105 |
943 |
720 |
26 |
0 |
| ODI |
0 |
78 |
329 |
574 |
841 |
1829 |
341 |
4 |
| CDI |
0 |
37 |
516 |
397 |
724 |
1814 |
6213 |
70 |
| VCDI |
0 |
2 |
198 |
256 |
230 |
592 |
29626 |
33953 |
|
...date precedes bulletin
|
Date: 2024-04-23:
| 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 |
54777 |
17759 |
977 |
348 |
50 |
18 |
6 |
0 |
| OW |
0 |
1280 |
1612 |
626 |
202 |
80 |
26 |
0 |
| VODI |
0 |
214 |
844 |
1076 |
860 |
609 |
183 |
0 |
| ODI |
0 |
155 |
253 |
668 |
745 |
1577 |
787 |
0 |
| CDI |
0 |
370 |
533 |
421 |
697 |
2454 |
6772 |
64 |
| VCDI |
0 |
30 |
494 |
484 |
481 |
649 |
36326 |
22961 |
|
...date precedes bulletin
|
Date: 2024-04-25:
| 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 |
54417 |
18192 |
1243 |
348 |
33 |
17 |
7 |
0 |
| OW |
0 |
1011 |
1502 |
988 |
90 |
49 |
86 |
0 |
| VODI |
0 |
297 |
976 |
1407 |
616 |
369 |
292 |
0 |
| ODI |
0 |
194 |
374 |
1202 |
847 |
804 |
839 |
0 |
| CDI |
0 |
682 |
463 |
1344 |
1164 |
2008 |
7006 |
0 |
| VCDI |
0 |
22 |
179 |
1125 |
1031 |
1307 |
37270 |
18667 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
54417 |
18245 |
1405 |
422 |
30 |
22 |
15 |
0 |
| OW |
0 |
915 |
1389 |
927 |
103 |
51 |
81 |
0 |
| VODI |
0 |
293 |
903 |
1363 |
566 |
361 |
328 |
0 |
| ODI |
0 |
212 |
389 |
1205 |
806 |
687 |
896 |
0 |
| CDI |
0 |
728 |
498 |
1417 |
1270 |
2148 |
7030 |
0 |
| VCDI |
0 |
5 |
153 |
1080 |
1006 |
1285 |
37150 |
18667 |
|
Date: 2024-04-29:
| 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 |
56146 |
17125 |
2171 |
234 |
18 |
3 |
2 |
0 |
| OW |
0 |
1807 |
1970 |
1631 |
229 |
44 |
38 |
0 |
| VODI |
0 |
329 |
678 |
1752 |
896 |
479 |
361 |
1 |
| ODI |
0 |
335 |
369 |
1175 |
1268 |
1474 |
1295 |
9 |
| CDI |
0 |
106 |
208 |
807 |
1177 |
3679 |
9180 |
60 |
| VCDI |
0 |
0 |
143 |
278 |
168 |
2089 |
21584 |
27150 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
56146 |
16470 |
1763 |
170 |
16 |
3 |
0 |
0 |
| OW |
0 |
1284 |
1273 |
584 |
73 |
47 |
31 |
0 |
| VODI |
0 |
837 |
1084 |
1480 |
376 |
290 |
292 |
0 |
| ODI |
0 |
417 |
568 |
1350 |
1004 |
948 |
1065 |
8 |
| CDI |
0 |
599 |
657 |
1822 |
1765 |
3408 |
8579 |
70 |
| VCDI |
0 |
95 |
194 |
471 |
522 |
3072 |
22493 |
27142 |
|
Date: 2024-05-01:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2024-05-03:
| 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 |
55685 |
18321 |
1813 |
404 |
68 |
6 |
5 |
0 |
| OW |
0 |
1327 |
2379 |
1245 |
331 |
88 |
33 |
0 |
| VODI |
0 |
210 |
1009 |
1353 |
846 |
712 |
450 |
3 |
| ODI |
0 |
32 |
396 |
837 |
917 |
1101 |
1598 |
9 |
| CDI |
0 |
98 |
264 |
838 |
1078 |
1773 |
12975 |
30 |
| VCDI |
0 |
35 |
168 |
294 |
312 |
313 |
26742 |
22370 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
55685 |
16728 |
920 |
253 |
44 |
2 |
2 |
0 |
| OW |
0 |
1684 |
1154 |
515 |
137 |
32 |
34 |
0 |
| VODI |
0 |
1001 |
1839 |
1059 |
396 |
335 |
343 |
1 |
| ODI |
0 |
285 |
964 |
1208 |
902 |
986 |
1982 |
8 |
| CDI |
0 |
221 |
916 |
1414 |
1665 |
2246 |
11863 |
51 |
| VCDI |
0 |
104 |
236 |
522 |
408 |
392 |
27579 |
22352 |
|
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