Validation of sea ice concentration
Bulletin date: 2024-08-01
Model vs. observations, sea ice class contingency tables
Date: 2024-07-26:
| 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 |
84855 |
18321 |
11927 |
2332 |
370 |
105 |
97 |
0 |
| OW |
0 |
7 |
2556 |
2674 |
946 |
301 |
181 |
0 |
| VODI |
0 |
0 |
552 |
2879 |
1891 |
1135 |
730 |
9 |
| ODI |
0 |
0 |
277 |
628 |
708 |
1231 |
1873 |
64 |
| CDI |
0 |
0 |
116 |
107 |
44 |
232 |
8379 |
11389 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
845 |
707 |
|
...date precedes bulletin
|
Date: 2024-07-30:
| 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 |
87508 |
17425 |
15159 |
2686 |
373 |
68 |
108 |
0 |
| OW |
0 |
315 |
1853 |
2514 |
728 |
168 |
222 |
0 |
| VODI |
0 |
0 |
598 |
2272 |
1889 |
983 |
613 |
0 |
| ODI |
0 |
0 |
208 |
273 |
366 |
1101 |
5433 |
33 |
| CDI |
0 |
0 |
13 |
24 |
25 |
64 |
5987 |
8444 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
679 |
336 |
|
...date precedes bulletin
|
Date: 2024-08-01:
| 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 |
88330 |
17554 |
15428 |
2634 |
451 |
63 |
89 |
0 |
| OW |
0 |
397 |
1653 |
2228 |
643 |
169 |
223 |
0 |
| VODI |
0 |
5 |
538 |
2228 |
1663 |
1207 |
662 |
0 |
| ODI |
0 |
0 |
109 |
316 |
403 |
1388 |
4698 |
146 |
| CDI |
0 |
0 |
0 |
18 |
28 |
165 |
7420 |
7067 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
357 |
188 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
88330 |
17697 |
15692 |
2803 |
456 |
70 |
106 |
0 |
| OW |
0 |
256 |
1449 |
2106 |
677 |
180 |
225 |
0 |
| VODI |
0 |
3 |
467 |
2125 |
1594 |
1120 |
586 |
0 |
| ODI |
0 |
0 |
119 |
369 |
434 |
1452 |
4825 |
127 |
| CDI |
0 |
0 |
1 |
21 |
27 |
170 |
7365 |
7116 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
342 |
158 |
|
Date: 2024-08-05:
| 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 |
90589 |
22582 |
11558 |
1586 |
221 |
44 |
82 |
0 |
| OW |
0 |
302 |
1619 |
1813 |
797 |
207 |
183 |
0 |
| VODI |
0 |
0 |
457 |
1640 |
1488 |
1491 |
404 |
0 |
| ODI |
0 |
0 |
31 |
419 |
1032 |
1948 |
4032 |
0 |
| CDI |
0 |
0 |
3 |
23 |
97 |
626 |
10938 |
1771 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
483 |
2 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
90589 |
22468 |
11294 |
1389 |
206 |
44 |
91 |
0 |
| OW |
0 |
385 |
1629 |
1741 |
659 |
244 |
273 |
0 |
| VODI |
0 |
31 |
665 |
1595 |
1438 |
1203 |
446 |
0 |
| ODI |
0 |
0 |
60 |
701 |
1282 |
2319 |
3252 |
0 |
| CDI |
0 |
0 |
20 |
55 |
50 |
506 |
11436 |
1678 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
624 |
95 |
|
Date: 2024-08-07:
| 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 |
90670 |
22643 |
11671 |
1646 |
217 |
30 |
77 |
0 |
| OW |
0 |
209 |
1489 |
2101 |
791 |
268 |
227 |
0 |
| VODI |
0 |
0 |
268 |
1356 |
1645 |
1315 |
545 |
0 |
| ODI |
0 |
0 |
15 |
180 |
826 |
1786 |
3991 |
0 |
| CDI |
0 |
0 |
2 |
24 |
144 |
814 |
11174 |
1721 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
602 |
21 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
90670 |
22476 |
11498 |
1486 |
221 |
34 |
87 |
0 |
| OW |
0 |
348 |
1472 |
1998 |
690 |
268 |
293 |
0 |
| VODI |
0 |
28 |
423 |
1389 |
1470 |
1103 |
535 |
0 |
| ODI |
0 |
0 |
39 |
416 |
1212 |
2447 |
4225 |
4 |
| CDI |
0 |
0 |
13 |
18 |
30 |
338 |
10267 |
1600 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
23 |
1209 |
138 |
|
Date: 2024-08-09:
| 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 |
91348 |
22688 |
11816 |
1392 |
174 |
22 |
59 |
0 |
| OW |
0 |
108 |
1713 |
1879 |
829 |
362 |
251 |
0 |
| VODI |
0 |
0 |
217 |
1434 |
1205 |
1238 |
607 |
0 |
| ODI |
0 |
0 |
12 |
234 |
772 |
1542 |
4291 |
14 |
| CDI |
0 |
0 |
0 |
3 |
181 |
854 |
10042 |
1633 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
20 |
1463 |
65 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
91348 |
22519 |
11590 |
1247 |
170 |
33 |
77 |
0 |
| OW |
0 |
266 |
1794 |
1899 |
782 |
393 |
265 |
0 |
| VODI |
0 |
11 |
343 |
1480 |
1167 |
1118 |
626 |
0 |
| ODI |
0 |
0 |
26 |
306 |
1026 |
2254 |
6180 |
30 |
| CDI |
0 |
0 |
5 |
10 |
16 |
213 |
8165 |
1588 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
27 |
1400 |
94 |
|
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