Validation of sea ice concentration - American sector
Bulletin date: 2021-04-29
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2021-04-23:
| 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 |
0 |
5 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
28 |
0 |
15 |
0 |
| ODI |
0 |
0 |
0 |
0 |
75 |
11 |
27 |
0 |
| CDI |
0 |
0 |
0 |
0 |
219 |
336 |
250 |
8 |
| VCDI |
0 |
0 |
0 |
0 |
395 |
2460 |
9054 |
32983 |
|
...date precedes bulletin
|
Date: 2021-04-25:
| 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 |
1 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
20 |
4 |
0 |
0 |
| VODI |
0 |
0 |
0 |
1 |
41 |
15 |
1 |
0 |
| ODI |
0 |
0 |
0 |
8 |
58 |
10 |
19 |
0 |
| CDI |
0 |
0 |
0 |
17 |
232 |
238 |
100 |
0 |
| VCDI |
0 |
0 |
0 |
30 |
503 |
2045 |
9844 |
32679 |
|
...date precedes bulletin
|
Date: 2021-04-27:
| 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 |
4 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
58 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
81 |
4 |
0 |
0 |
| ODI |
0 |
0 |
0 |
16 |
95 |
54 |
10 |
0 |
| CDI |
0 |
0 |
0 |
17 |
369 |
383 |
236 |
38 |
| VCDI |
0 |
0 |
0 |
8 |
267 |
2758 |
12152 |
29316 |
|
...date precedes bulletin
|
Date: 2021-04-29:
| 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 |
2 |
22 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
8 |
93 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
32 |
87 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
30 |
163 |
60 |
2 |
0 |
| CDI |
0 |
0 |
0 |
29 |
465 |
313 |
198 |
55 |
| VCDI |
0 |
0 |
0 |
12 |
363 |
2599 |
11807 |
29526 |
|
|
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 |
4 |
55 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
9 |
61 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
31 |
80 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
25 |
174 |
64 |
8 |
0 |
| CDI |
0 |
0 |
0 |
28 |
444 |
304 |
194 |
54 |
| VCDI |
0 |
0 |
0 |
16 |
379 |
2604 |
11805 |
29527 |
|
Date: 2021-05-01:
| 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 |
0 |
0 |
0 |
19 |
31 |
0 |
0 |
0 |
| OW |
0 |
8 |
2 |
81 |
47 |
0 |
0 |
0 |
| VODI |
0 |
12 |
2 |
53 |
59 |
9 |
0 |
0 |
| ODI |
0 |
9 |
0 |
29 |
96 |
84 |
9 |
13 |
| CDI |
0 |
0 |
1 |
25 |
291 |
323 |
184 |
101 |
| VCDI |
0 |
0 |
0 |
29 |
399 |
2727 |
11338 |
29885 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
1 |
1 |
55 |
50 |
0 |
0 |
0 |
| OW |
0 |
11 |
3 |
58 |
32 |
0 |
0 |
0 |
| VODI |
0 |
10 |
0 |
45 |
47 |
11 |
0 |
0 |
| ODI |
0 |
7 |
0 |
22 |
99 |
85 |
12 |
12 |
| CDI |
0 |
0 |
1 |
25 |
266 |
317 |
165 |
106 |
| VCDI |
0 |
0 |
0 |
31 |
429 |
2730 |
11354 |
29881 |
|
Date: 2021-05-03:
| 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 |
33 |
2 |
25 |
23 |
0 |
0 |
0 |
| OW |
0 |
81 |
6 |
88 |
36 |
0 |
0 |
0 |
| VODI |
0 |
66 |
5 |
38 |
104 |
11 |
0 |
0 |
| ODI |
0 |
2 |
2 |
7 |
156 |
44 |
30 |
0 |
| CDI |
0 |
0 |
0 |
24 |
409 |
359 |
100 |
24 |
| VCDI |
0 |
0 |
0 |
15 |
298 |
2079 |
10203 |
31596 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
83 |
4 |
67 |
54 |
0 |
0 |
0 |
| OW |
0 |
62 |
4 |
36 |
27 |
0 |
0 |
0 |
| VODI |
0 |
29 |
2 |
37 |
40 |
12 |
9 |
0 |
| ODI |
0 |
8 |
5 |
15 |
88 |
39 |
34 |
1 |
| CDI |
0 |
0 |
0 |
3 |
252 |
261 |
200 |
91 |
| VCDI |
0 |
0 |
0 |
39 |
565 |
2181 |
10090 |
31528 |
|
Date: 2021-05-05:
| 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 |
0 |
79 |
13 |
83 |
54 |
0 |
0 |
0 |
| OW |
0 |
134 |
0 |
27 |
41 |
0 |
0 |
0 |
| VODI |
0 |
21 |
1 |
13 |
80 |
24 |
0 |
0 |
| ODI |
0 |
0 |
0 |
7 |
109 |
72 |
21 |
0 |
| CDI |
0 |
4 |
0 |
6 |
391 |
361 |
175 |
5 |
| VCDI |
0 |
3 |
1 |
24 |
359 |
2163 |
11335 |
30260 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
147 |
9 |
64 |
82 |
0 |
0 |
0 |
| OW |
0 |
53 |
4 |
18 |
18 |
2 |
4 |
0 |
| VODI |
0 |
34 |
1 |
25 |
36 |
26 |
14 |
0 |
| ODI |
0 |
0 |
0 |
4 |
64 |
57 |
26 |
0 |
| CDI |
0 |
0 |
0 |
17 |
168 |
216 |
312 |
22 |
| VCDI |
0 |
7 |
1 |
32 |
666 |
2319 |
11175 |
30243 |
|
Date: 2021-05-07:
| 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 |
0 |
194 |
11 |
71 |
34 |
0 |
0 |
0 |
| OW |
0 |
85 |
2 |
30 |
43 |
1 |
0 |
0 |
| VODI |
0 |
1 |
0 |
16 |
111 |
21 |
6 |
0 |
| ODI |
0 |
0 |
0 |
14 |
163 |
77 |
32 |
0 |
| CDI |
0 |
5 |
2 |
22 |
456 |
304 |
253 |
9 |
| VCDI |
0 |
3 |
0 |
32 |
534 |
2673 |
11823 |
28838 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
219 |
10 |
45 |
44 |
0 |
1 |
0 |
| OW |
0 |
49 |
1 |
28 |
19 |
1 |
12 |
0 |
| VODI |
0 |
12 |
2 |
35 |
56 |
16 |
33 |
0 |
| ODI |
0 |
0 |
0 |
16 |
81 |
41 |
48 |
0 |
| CDI |
0 |
0 |
0 |
20 |
242 |
273 |
414 |
20 |
| VCDI |
0 |
8 |
2 |
41 |
899 |
2745 |
11606 |
28827 |
|
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