Validation of sea ice concentration - American sector
Bulletin date: 2020-12-17
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2020-12-11:
| 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 |
0 |
1158 |
70 |
604 |
288 |
12 |
0 |
0 |
| OW |
0 |
375 |
42 |
493 |
292 |
118 |
0 |
0 |
| VODI |
0 |
115 |
16 |
250 |
357 |
291 |
0 |
0 |
| ODI |
0 |
10 |
3 |
33 |
340 |
597 |
28 |
0 |
| CDI |
0 |
0 |
1 |
4 |
236 |
1134 |
179 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
234 |
5069 |
8029 |
25488 |
|
...date precedes bulletin
|
Date: 2020-12-13:
| 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 |
0 |
624 |
25 |
141 |
121 |
1 |
0 |
0 |
| OW |
0 |
424 |
32 |
383 |
488 |
90 |
0 |
0 |
| VODI |
0 |
135 |
19 |
453 |
615 |
204 |
28 |
0 |
| ODI |
0 |
52 |
5 |
173 |
295 |
358 |
45 |
0 |
| CDI |
0 |
8 |
1 |
121 |
327 |
684 |
251 |
0 |
| VCDI |
0 |
0 |
0 |
36 |
674 |
4172 |
13554 |
21327 |
|
...date precedes bulletin
|
Date: 2020-12-15:
| 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 |
0 |
315 |
2 |
19 |
0 |
0 |
0 |
0 |
| OW |
0 |
439 |
35 |
188 |
72 |
0 |
0 |
0 |
| VODI |
0 |
215 |
27 |
352 |
477 |
8 |
0 |
0 |
| ODI |
0 |
76 |
6 |
149 |
908 |
144 |
0 |
0 |
| CDI |
0 |
50 |
4 |
83 |
638 |
536 |
27 |
0 |
| VCDI |
0 |
49 |
10 |
128 |
677 |
4811 |
13953 |
21468 |
|
...date precedes bulletin
|
Date: 2020-12-17:
| 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 |
0 |
56 |
3 |
5 |
0 |
0 |
0 |
0 |
| OW |
0 |
78 |
15 |
69 |
3 |
0 |
0 |
0 |
| VODI |
0 |
109 |
18 |
282 |
327 |
1 |
0 |
0 |
| ODI |
0 |
38 |
9 |
144 |
689 |
144 |
0 |
0 |
| CDI |
0 |
19 |
7 |
85 |
852 |
517 |
30 |
0 |
| VCDI |
0 |
4 |
2 |
198 |
756 |
4416 |
13674 |
23316 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
72 |
2 |
5 |
0 |
0 |
0 |
0 |
| OW |
0 |
54 |
17 |
60 |
2 |
0 |
0 |
0 |
| VODI |
0 |
115 |
16 |
296 |
314 |
1 |
0 |
0 |
| ODI |
0 |
42 |
10 |
142 |
641 |
126 |
0 |
0 |
| CDI |
0 |
17 |
7 |
76 |
878 |
518 |
54 |
0 |
| VCDI |
0 |
4 |
2 |
204 |
792 |
4433 |
13650 |
23316 |
|
Date: 2020-12-19:
| 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 |
0 |
3 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
73 |
4 |
14 |
0 |
0 |
0 |
0 |
| VODI |
0 |
163 |
30 |
165 |
33 |
0 |
0 |
0 |
| ODI |
0 |
25 |
10 |
228 |
244 |
71 |
0 |
0 |
| CDI |
0 |
0 |
0 |
106 |
828 |
613 |
6 |
0 |
| VCDI |
0 |
0 |
0 |
61 |
1412 |
6461 |
12149 |
23167 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
6 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
71 |
1 |
17 |
0 |
0 |
0 |
0 |
| VODI |
0 |
147 |
30 |
156 |
40 |
0 |
0 |
0 |
| ODI |
0 |
39 |
12 |
226 |
222 |
100 |
0 |
0 |
| CDI |
0 |
1 |
1 |
81 |
703 |
583 |
3 |
0 |
| VCDI |
0 |
0 |
0 |
94 |
1552 |
6462 |
12152 |
23167 |
|
Date: 2020-12-21:
| 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 |
0 |
24 |
2 |
4 |
0 |
0 |
0 |
0 |
| OW |
0 |
38 |
5 |
38 |
0 |
0 |
0 |
0 |
| VODI |
0 |
6 |
6 |
153 |
101 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
50 |
530 |
27 |
0 |
0 |
| CDI |
0 |
0 |
0 |
8 |
392 |
596 |
1 |
3 |
| VCDI |
0 |
0 |
0 |
0 |
315 |
5009 |
12615 |
25943 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
17 |
2 |
6 |
0 |
0 |
0 |
0 |
| VODI |
0 |
43 |
7 |
86 |
48 |
17 |
1 |
0 |
| ODI |
0 |
7 |
4 |
121 |
350 |
103 |
39 |
0 |
| CDI |
0 |
0 |
0 |
28 |
395 |
373 |
165 |
9 |
| VCDI |
0 |
0 |
0 |
12 |
545 |
5139 |
12411 |
25937 |
|
Date: 2020-12-23:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
21 |
1 |
0 |
0 |
0 |
| VODI |
0 |
14 |
3 |
45 |
45 |
7 |
0 |
0 |
| ODI |
0 |
0 |
0 |
34 |
186 |
53 |
0 |
0 |
| CDI |
0 |
0 |
0 |
26 |
518 |
427 |
12 |
4 |
| VCDI |
0 |
0 |
0 |
25 |
410 |
4016 |
13467 |
26552 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
1 |
2 |
41 |
24 |
4 |
0 |
0 |
| ODI |
0 |
13 |
1 |
47 |
185 |
54 |
16 |
0 |
| CDI |
0 |
0 |
0 |
33 |
409 |
445 |
103 |
2 |
| VCDI |
0 |
0 |
0 |
30 |
542 |
4000 |
13360 |
26554 |
|
Date: 2020-12-25:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
3 |
34 |
17 |
0 |
0 |
| ODI |
0 |
0 |
0 |
31 |
50 |
98 |
0 |
0 |
| CDI |
0 |
0 |
0 |
19 |
221 |
264 |
19 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
210 |
2724 |
12003 |
30173 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
20 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
29 |
42 |
4 |
5 |
0 |
| CDI |
0 |
0 |
0 |
24 |
221 |
192 |
75 |
2 |
| VCDI |
0 |
0 |
0 |
0 |
232 |
2907 |
11942 |
30171 |
|
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