Validation of sea ice concentration - American sector
Bulletin date: 2023-09-21
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-09-16:
| 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 |
22916 |
7312 |
208 |
158 |
79 |
0 |
0 |
0 |
| OW |
0 |
179 |
160 |
356 |
45 |
0 |
0 |
0 |
| VODI |
0 |
52 |
54 |
697 |
293 |
59 |
0 |
0 |
| ODI |
0 |
0 |
18 |
351 |
1386 |
719 |
19 |
0 |
| CDI |
0 |
0 |
0 |
81 |
916 |
2262 |
1258 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
22 |
2395 |
3855 |
16 |
|
...date precedes bulletin
|
Date: 2023-09-18:
| 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 |
22821 |
7318 |
243 |
191 |
2 |
0 |
0 |
0 |
| OW |
0 |
253 |
153 |
427 |
13 |
6 |
0 |
0 |
| VODI |
0 |
53 |
56 |
755 |
214 |
43 |
0 |
0 |
| ODI |
0 |
2 |
23 |
451 |
1109 |
619 |
2 |
0 |
| CDI |
0 |
0 |
0 |
232 |
771 |
2882 |
546 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
82 |
1019 |
5379 |
201 |
|
...date precedes bulletin
|
Date: 2023-09-20:
| 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 |
24048 |
6363 |
328 |
222 |
7 |
0 |
0 |
0 |
| OW |
0 |
137 |
176 |
411 |
2 |
0 |
0 |
0 |
| VODI |
0 |
5 |
14 |
1030 |
153 |
6 |
0 |
0 |
| ODI |
0 |
1 |
0 |
172 |
1641 |
74 |
0 |
0 |
| CDI |
0 |
0 |
0 |
2 |
654 |
3337 |
214 |
0 |
| VCDI |
0 |
0 |
0 |
4 |
14 |
1447 |
5404 |
0 |
|
...date precedes bulletin
|
Date: 2023-09-22:
| 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 |
23859 |
6266 |
289 |
307 |
12 |
0 |
0 |
0 |
| OW |
0 |
187 |
199 |
443 |
108 |
0 |
0 |
0 |
| VODI |
0 |
5 |
20 |
719 |
354 |
52 |
0 |
0 |
| ODI |
0 |
0 |
0 |
154 |
1340 |
215 |
21 |
0 |
| CDI |
0 |
0 |
0 |
11 |
650 |
3112 |
717 |
0 |
| VCDI |
0 |
0 |
0 |
6 |
16 |
944 |
5860 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
23859 |
6203 |
344 |
404 |
27 |
0 |
0 |
0 |
| OW |
0 |
249 |
146 |
420 |
105 |
0 |
0 |
0 |
| VODI |
0 |
6 |
18 |
685 |
337 |
60 |
0 |
0 |
| ODI |
0 |
0 |
0 |
114 |
1244 |
249 |
16 |
0 |
| CDI |
0 |
0 |
0 |
12 |
751 |
3138 |
785 |
0 |
| VCDI |
0 |
0 |
0 |
5 |
16 |
876 |
5797 |
0 |
|
Date: 2023-09-24:
| 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 |
23894 |
5767 |
236 |
181 |
2 |
0 |
0 |
0 |
| OW |
0 |
380 |
206 |
583 |
91 |
0 |
0 |
0 |
| VODI |
0 |
21 |
33 |
627 |
420 |
53 |
0 |
0 |
| ODI |
0 |
3 |
0 |
267 |
1009 |
303 |
15 |
0 |
| CDI |
0 |
0 |
0 |
37 |
571 |
3064 |
864 |
0 |
| VCDI |
0 |
0 |
0 |
14 |
41 |
1415 |
5762 |
7 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
23894 |
5686 |
329 |
428 |
22 |
0 |
0 |
0 |
| OW |
0 |
424 |
111 |
464 |
114 |
0 |
0 |
0 |
| VODI |
0 |
58 |
35 |
548 |
405 |
67 |
0 |
0 |
| ODI |
0 |
3 |
0 |
214 |
967 |
331 |
15 |
0 |
| CDI |
0 |
0 |
0 |
40 |
575 |
3113 |
974 |
0 |
| VCDI |
0 |
0 |
0 |
15 |
51 |
1324 |
5652 |
7 |
|
Date: 2023-09-26:
| 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 |
21015 |
7734 |
452 |
564 |
10 |
0 |
0 |
0 |
| OW |
0 |
45 |
80 |
466 |
112 |
0 |
0 |
0 |
| VODI |
0 |
8 |
5 |
529 |
494 |
4 |
0 |
0 |
| ODI |
0 |
0 |
0 |
31 |
1043 |
133 |
0 |
0 |
| CDI |
0 |
0 |
0 |
15 |
203 |
2675 |
222 |
0 |
| VCDI |
0 |
0 |
0 |
9 |
2 |
1454 |
8338 |
223 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
21015 |
7296 |
354 |
533 |
64 |
9 |
0 |
0 |
| OW |
0 |
476 |
166 |
672 |
518 |
40 |
0 |
0 |
| VODI |
0 |
14 |
17 |
296 |
498 |
215 |
21 |
0 |
| ODI |
0 |
1 |
0 |
83 |
423 |
573 |
100 |
0 |
| CDI |
0 |
0 |
0 |
20 |
340 |
2020 |
1513 |
0 |
| VCDI |
0 |
0 |
0 |
10 |
21 |
1409 |
6926 |
223 |
|
Date: 2023-09-28:
| 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 |
21641 |
7153 |
359 |
486 |
45 |
0 |
0 |
0 |
| OW |
0 |
83 |
112 |
582 |
54 |
0 |
0 |
0 |
| VODI |
0 |
3 |
4 |
440 |
565 |
17 |
0 |
0 |
| ODI |
0 |
0 |
0 |
18 |
700 |
264 |
9 |
0 |
| CDI |
0 |
0 |
0 |
1 |
138 |
1090 |
942 |
64 |
| VCDI |
0 |
0 |
0 |
0 |
9 |
421 |
7886 |
2780 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
21641 |
6598 |
247 |
327 |
42 |
0 |
0 |
0 |
| OW |
0 |
635 |
218 |
808 |
300 |
29 |
0 |
0 |
| VODI |
0 |
6 |
10 |
321 |
601 |
198 |
23 |
0 |
| ODI |
0 |
0 |
0 |
70 |
359 |
402 |
177 |
0 |
| CDI |
0 |
0 |
0 |
1 |
189 |
837 |
1066 |
3 |
| VCDI |
0 |
0 |
0 |
0 |
20 |
326 |
7571 |
2841 |
|
Date: 2023-09-30:
| 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 |
22885 |
5905 |
274 |
410 |
62 |
4 |
0 |
0 |
| OW |
0 |
270 |
160 |
513 |
86 |
9 |
0 |
0 |
| VODI |
0 |
4 |
25 |
480 |
529 |
31 |
0 |
0 |
| ODI |
0 |
0 |
0 |
90 |
663 |
239 |
6 |
0 |
| CDI |
0 |
0 |
0 |
1 |
264 |
946 |
489 |
27 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
277 |
4620 |
6597 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
22853 |
5382 |
219 |
321 |
63 |
1 |
0 |
0 |
| OW |
32 |
756 |
188 |
614 |
293 |
24 |
0 |
0 |
| VODI |
0 |
41 |
48 |
391 |
494 |
268 |
12 |
0 |
| ODI |
0 |
0 |
4 |
144 |
248 |
418 |
149 |
0 |
| CDI |
0 |
0 |
0 |
23 |
432 |
315 |
876 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
74 |
480 |
4078 |
6624 |
|
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