Validation of sea ice concentration - American sector
Bulletin date: 2023-08-24
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-08-18:
| 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 |
12755 |
10243 |
736 |
674 |
21 |
0 |
0 |
0 |
| OW |
16 |
560 |
354 |
1140 |
33 |
0 |
0 |
0 |
| VODI |
0 |
197 |
107 |
2863 |
323 |
2 |
0 |
0 |
| ODI |
0 |
8 |
1 |
824 |
3226 |
86 |
16 |
0 |
| CDI |
0 |
0 |
0 |
5 |
2162 |
3799 |
246 |
15 |
| VCDI |
0 |
4 |
0 |
0 |
13 |
1407 |
2740 |
1290 |
|
...date precedes bulletin
|
Date: 2023-08-20:
| 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 |
13344 |
10060 |
601 |
611 |
3 |
0 |
0 |
0 |
| OW |
44 |
876 |
387 |
923 |
32 |
1 |
0 |
0 |
| VODI |
29 |
167 |
174 |
2416 |
629 |
24 |
0 |
0 |
| ODI |
0 |
5 |
2 |
796 |
2926 |
256 |
25 |
0 |
| CDI |
0 |
0 |
0 |
22 |
1509 |
3540 |
1150 |
7 |
| VCDI |
0 |
4 |
0 |
3 |
10 |
382 |
3342 |
1566 |
|
...date precedes bulletin
|
Date: 2023-08-22:
| 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 |
14324 |
10798 |
819 |
667 |
1 |
0 |
0 |
0 |
| OW |
5 |
171 |
245 |
899 |
18 |
0 |
0 |
0 |
| VODI |
0 |
16 |
49 |
2645 |
320 |
8 |
0 |
0 |
| ODI |
0 |
0 |
0 |
128 |
3491 |
325 |
0 |
0 |
| CDI |
0 |
0 |
0 |
2 |
969 |
4053 |
1034 |
19 |
| VCDI |
0 |
3 |
1 |
0 |
3 |
515 |
2997 |
1341 |
|
...date precedes bulletin
|
Date: 2023-08-24:
| 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 |
16539 |
9278 |
595 |
627 |
0 |
0 |
0 |
0 |
| OW |
5 |
363 |
372 |
883 |
6 |
0 |
0 |
0 |
| VODI |
0 |
13 |
52 |
2201 |
189 |
7 |
0 |
0 |
| ODI |
0 |
0 |
2 |
423 |
3057 |
268 |
0 |
0 |
| CDI |
0 |
0 |
0 |
2 |
1167 |
4386 |
957 |
0 |
| VCDI |
0 |
3 |
1 |
0 |
2 |
1367 |
3075 |
26 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16540 |
9347 |
600 |
666 |
3 |
0 |
0 |
0 |
| OW |
4 |
285 |
322 |
761 |
3 |
0 |
0 |
0 |
| VODI |
0 |
22 |
97 |
2190 |
210 |
3 |
0 |
0 |
| ODI |
0 |
0 |
2 |
517 |
2973 |
319 |
0 |
0 |
| CDI |
0 |
0 |
0 |
2 |
1230 |
4295 |
954 |
0 |
| VCDI |
0 |
3 |
1 |
0 |
2 |
1411 |
3078 |
26 |
|
Date: 2023-08-26:
| 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 |
15580 |
10561 |
530 |
515 |
1 |
0 |
0 |
0 |
| OW |
2 |
519 |
469 |
789 |
5 |
0 |
0 |
0 |
| VODI |
0 |
14 |
65 |
1904 |
186 |
19 |
0 |
0 |
| ODI |
0 |
0 |
1 |
468 |
2766 |
356 |
0 |
0 |
| CDI |
0 |
1 |
1 |
4 |
1549 |
4301 |
551 |
0 |
| VCDI |
0 |
2 |
0 |
0 |
18 |
3013 |
1676 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15580 |
10586 |
597 |
609 |
2 |
0 |
0 |
0 |
| OW |
2 |
457 |
294 |
581 |
4 |
0 |
0 |
0 |
| VODI |
0 |
51 |
173 |
1905 |
218 |
11 |
0 |
0 |
| ODI |
0 |
0 |
1 |
581 |
2705 |
415 |
0 |
0 |
| CDI |
0 |
0 |
0 |
4 |
1575 |
4111 |
587 |
0 |
| VCDI |
0 |
3 |
1 |
0 |
21 |
3152 |
1640 |
0 |
|
Date: 2023-08-28:
| 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 |
17405 |
9820 |
525 |
210 |
5 |
0 |
0 |
0 |
| OW |
0 |
74 |
390 |
962 |
1 |
0 |
0 |
0 |
| VODI |
0 |
0 |
2 |
2136 |
185 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
139 |
3471 |
243 |
0 |
0 |
| CDI |
0 |
2 |
1 |
4 |
963 |
4663 |
146 |
0 |
| VCDI |
0 |
1 |
0 |
0 |
28 |
1434 |
3032 |
23 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17403 |
9428 |
479 |
343 |
6 |
0 |
0 |
0 |
| OW |
2 |
421 |
296 |
589 |
2 |
0 |
0 |
0 |
| VODI |
0 |
45 |
141 |
1827 |
249 |
20 |
0 |
0 |
| ODI |
0 |
0 |
1 |
687 |
2433 |
471 |
0 |
0 |
| CDI |
0 |
0 |
0 |
5 |
1820 |
2926 |
1368 |
12 |
| VCDI |
0 |
3 |
1 |
0 |
143 |
2924 |
1810 |
11 |
|
Date: 2023-08-30:
| 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 |
18829 |
9189 |
276 |
117 |
2 |
0 |
0 |
0 |
| OW |
0 |
521 |
442 |
440 |
2 |
0 |
0 |
0 |
| VODI |
0 |
0 |
30 |
1894 |
110 |
2 |
0 |
0 |
| ODI |
0 |
0 |
0 |
438 |
3041 |
157 |
0 |
0 |
| CDI |
0 |
5 |
1 |
2 |
1207 |
4317 |
218 |
0 |
| VCDI |
0 |
1 |
0 |
0 |
15 |
1341 |
3269 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
18827 |
8613 |
230 |
136 |
3 |
0 |
0 |
0 |
| OW |
2 |
722 |
217 |
291 |
4 |
1 |
0 |
0 |
| VODI |
0 |
375 |
296 |
1471 |
198 |
46 |
0 |
0 |
| ODI |
0 |
0 |
5 |
978 |
2043 |
317 |
2 |
0 |
| CDI |
0 |
4 |
0 |
15 |
2003 |
2913 |
869 |
0 |
| VCDI |
0 |
2 |
1 |
0 |
126 |
2540 |
2616 |
0 |
|
Date: 2023-09-01:
| 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 |
19782 |
8368 |
229 |
160 |
1 |
0 |
0 |
0 |
| OW |
0 |
739 |
394 |
434 |
3 |
0 |
0 |
0 |
| VODI |
0 |
3 |
68 |
1617 |
262 |
0 |
0 |
0 |
| ODI |
0 |
2 |
1 |
513 |
2610 |
254 |
0 |
0 |
| CDI |
0 |
5 |
2 |
7 |
1097 |
3958 |
297 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
62 |
1204 |
3794 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
19781 |
7631 |
235 |
198 |
2 |
0 |
0 |
0 |
| OW |
1 |
854 |
123 |
272 |
16 |
0 |
0 |
0 |
| VODI |
0 |
626 |
331 |
1123 |
286 |
71 |
0 |
0 |
| ODI |
0 |
0 |
3 |
1097 |
1528 |
410 |
0 |
0 |
| CDI |
0 |
5 |
2 |
41 |
2009 |
2610 |
876 |
0 |
| VCDI |
0 |
1 |
0 |
0 |
194 |
2325 |
3215 |
0 |
|
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