Validation of sea ice concentration - American sector
Bulletin date: 2023-04-20
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-04-14:
| 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 |
0 |
0 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
0 |
10 |
11 |
74 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
851 |
5062 |
39858 |
|
...date precedes bulletin
|
Date: 2023-04-16:
| 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 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
13 |
17 |
12 |
10 |
| VCDI |
0 |
0 |
0 |
0 |
188 |
939 |
4721 |
39966 |
|
...date precedes bulletin
|
Date: 2023-04-18:
| 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 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
1 |
17 |
18 |
0 |
0 |
| CDI |
0 |
2 |
1 |
17 |
68 |
158 |
13 |
35 |
| VCDI |
0 |
109 |
3 |
136 |
477 |
990 |
6199 |
37622 |
|
...date precedes bulletin
|
Date: 2023-04-20:
| 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 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
18 |
2 |
0 |
0 |
| ODI |
0 |
0 |
0 |
4 |
85 |
27 |
4 |
0 |
| CDI |
0 |
0 |
0 |
2 |
146 |
169 |
190 |
8 |
| VCDI |
0 |
0 |
0 |
0 |
474 |
1222 |
8289 |
35226 |
|
|
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 |
14 |
2 |
0 |
0 |
| ODI |
0 |
0 |
0 |
4 |
74 |
26 |
3 |
0 |
| CDI |
0 |
0 |
0 |
2 |
142 |
166 |
197 |
9 |
| VCDI |
0 |
0 |
0 |
0 |
493 |
1226 |
8283 |
35225 |
|
Date: 2023-04-22:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2023-04-24:
| 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 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
1 |
6 |
0 |
2 |
5 |
| ODI |
0 |
0 |
0 |
4 |
67 |
32 |
13 |
16 |
| CDI |
0 |
0 |
0 |
11 |
219 |
318 |
210 |
39 |
| VCDI |
0 |
0 |
0 |
2 |
315 |
2214 |
10550 |
31842 |
|
|
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 |
1 |
10 |
0 |
5 |
4 |
| ODI |
0 |
0 |
0 |
4 |
70 |
31 |
16 |
11 |
| CDI |
0 |
0 |
0 |
11 |
226 |
316 |
197 |
35 |
| VCDI |
0 |
0 |
0 |
2 |
301 |
2217 |
10557 |
31852 |
|
Date: 2023-04-26:
| 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 |
1 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
13 |
1 |
0 |
2 |
6 |
| ODI |
0 |
0 |
0 |
9 |
29 |
30 |
28 |
18 |
| CDI |
0 |
0 |
0 |
9 |
217 |
253 |
339 |
61 |
| VCDI |
0 |
0 |
0 |
5 |
340 |
2031 |
10087 |
32387 |
|
|
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 |
5 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
14 |
8 |
1 |
2 |
4 |
| ODI |
0 |
0 |
0 |
4 |
44 |
26 |
21 |
9 |
| CDI |
0 |
0 |
0 |
10 |
268 |
313 |
410 |
39 |
| VCDI |
0 |
0 |
0 |
4 |
267 |
1974 |
10023 |
32420 |
|
Date: 2023-04-28:
| 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 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
5 |
0 |
2 |
0 |
0 |
| VODI |
0 |
0 |
0 |
13 |
3 |
12 |
6 |
0 |
| ODI |
0 |
0 |
0 |
12 |
25 |
54 |
46 |
2 |
| CDI |
0 |
0 |
0 |
8 |
286 |
309 |
273 |
23 |
| VCDI |
0 |
0 |
0 |
17 |
505 |
2168 |
10097 |
32000 |
|
|
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 |
6 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
12 |
2 |
11 |
3 |
0 |
| ODI |
0 |
0 |
0 |
12 |
51 |
29 |
29 |
0 |
| CDI |
0 |
0 |
0 |
8 |
362 |
385 |
242 |
50 |
| VCDI |
0 |
0 |
0 |
17 |
404 |
2120 |
10148 |
31975 |
|
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