Validation of sea ice concentration - American sector
Bulletin date: 2021-04-22
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2021-04-16:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
4 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
4 |
24 |
4 |
0 |
0 |
| ODI |
0 |
0 |
0 |
6 |
66 |
42 |
5 |
0 |
| CDI |
0 |
0 |
0 |
11 |
170 |
292 |
167 |
38 |
| VCDI |
0 |
0 |
0 |
18 |
462 |
2887 |
8655 |
33011 |
|
...date precedes bulletin
|
Date: 2021-04-18:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
4 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
25 |
22 |
12 |
0 |
| ODI |
0 |
0 |
0 |
2 |
88 |
47 |
16 |
0 |
| CDI |
0 |
0 |
0 |
0 |
175 |
410 |
127 |
40 |
| VCDI |
0 |
0 |
0 |
2 |
445 |
2681 |
10918 |
30852 |
|
...date precedes bulletin
|
Date: 2021-04-20:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
2 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
35 |
1 |
2 |
0 |
| ODI |
0 |
0 |
0 |
0 |
85 |
24 |
13 |
0 |
| CDI |
0 |
0 |
0 |
0 |
361 |
458 |
144 |
2 |
| VCDI |
0 |
0 |
0 |
0 |
258 |
2514 |
9586 |
32381 |
|
...date precedes bulletin
|
Date: 2021-04-22:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
3 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
26 |
0 |
8 |
0 |
| ODI |
0 |
0 |
0 |
0 |
68 |
1 |
14 |
0 |
| CDI |
0 |
0 |
0 |
0 |
236 |
355 |
228 |
18 |
| VCDI |
0 |
0 |
0 |
0 |
331 |
2096 |
11829 |
30653 |
|
|
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 |
4 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
23 |
0 |
11 |
0 |
| ODI |
0 |
0 |
0 |
0 |
67 |
2 |
14 |
0 |
| CDI |
0 |
0 |
0 |
0 |
215 |
337 |
240 |
22 |
| VCDI |
0 |
0 |
0 |
0 |
355 |
2113 |
11814 |
30649 |
|
Date: 2021-04-24:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
12 |
2 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
31 |
11 |
5 |
0 |
| ODI |
0 |
0 |
0 |
0 |
77 |
31 |
18 |
0 |
| CDI |
0 |
0 |
0 |
0 |
304 |
283 |
82 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
477 |
1924 |
9572 |
33035 |
|
|
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 |
11 |
4 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
28 |
11 |
5 |
0 |
| ODI |
0 |
0 |
0 |
0 |
73 |
35 |
20 |
0 |
| CDI |
0 |
0 |
0 |
0 |
309 |
296 |
77 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
480 |
1905 |
9575 |
33035 |
|
Date: 2021-04-26:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
24 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
97 |
7 |
0 |
0 |
| ODI |
0 |
0 |
0 |
8 |
118 |
27 |
1 |
0 |
| CDI |
0 |
0 |
0 |
16 |
289 |
362 |
108 |
14 |
| VCDI |
0 |
0 |
0 |
1 |
209 |
1908 |
11677 |
31000 |
|
|
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 |
4 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
18 |
8 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
37 |
15 |
2 |
0 |
| ODI |
0 |
0 |
0 |
0 |
68 |
15 |
17 |
0 |
| CDI |
0 |
0 |
0 |
12 |
215 |
204 |
142 |
34 |
| VCDI |
0 |
0 |
0 |
13 |
395 |
2062 |
11625 |
30980 |
|
Date: 2021-04-28:
| 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 |
0 |
0 |
0 |
0 |
14 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
84 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
4 |
82 |
4 |
0 |
0 |
| ODI |
0 |
0 |
0 |
26 |
132 |
62 |
21 |
0 |
| CDI |
0 |
0 |
0 |
17 |
406 |
415 |
239 |
70 |
| VCDI |
0 |
0 |
0 |
9 |
281 |
2578 |
11303 |
30119 |
|
|
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 |
18 |
5 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
46 |
20 |
6 |
0 |
| ODI |
0 |
0 |
0 |
4 |
89 |
46 |
71 |
6 |
| CDI |
0 |
0 |
0 |
35 |
309 |
395 |
344 |
129 |
| VCDI |
0 |
0 |
0 |
17 |
537 |
2593 |
11142 |
30054 |
|
Date: 2021-04-30:
| 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 |
0 |
0 |
0 |
10 |
28 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
44 |
67 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
58 |
81 |
8 |
0 |
0 |
| ODI |
0 |
0 |
0 |
36 |
154 |
57 |
6 |
0 |
| CDI |
0 |
0 |
0 |
25 |
397 |
258 |
212 |
21 |
| VCDI |
0 |
0 |
0 |
22 |
343 |
2922 |
12975 |
28142 |
|
|
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 |
3 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
2 |
22 |
1 |
0 |
0 |
| VODI |
0 |
0 |
0 |
28 |
48 |
3 |
13 |
0 |
| ODI |
0 |
0 |
0 |
40 |
126 |
64 |
123 |
8 |
| CDI |
0 |
0 |
0 |
63 |
245 |
371 |
525 |
54 |
| VCDI |
0 |
0 |
0 |
62 |
626 |
2806 |
12532 |
28101 |
|
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