Validation of sea ice concentration - American sector
Bulletin date: 2022-04-21
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2022-04-15:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
2 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
1 |
26 |
20 |
30 |
2 |
0 |
| ODI |
0 |
0 |
0 |
46 |
87 |
62 |
36 |
0 |
| CDI |
0 |
4 |
7 |
67 |
231 |
175 |
154 |
0 |
| VCDI |
0 |
1 |
19 |
94 |
359 |
1423 |
16735 |
26285 |
|
...date precedes bulletin
|
Date: 2022-04-17:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
5 |
1 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
1 |
11 |
25 |
12 |
12 |
8 |
0 |
| ODI |
0 |
0 |
3 |
28 |
83 |
69 |
14 |
0 |
| CDI |
0 |
0 |
1 |
37 |
198 |
235 |
136 |
0 |
| VCDI |
0 |
1 |
8 |
87 |
431 |
1228 |
15361 |
27871 |
|
...date precedes bulletin
|
Date: 2022-04-19:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
4 |
0 |
| VODI |
0 |
0 |
0 |
3 |
10 |
9 |
24 |
0 |
| ODI |
0 |
0 |
0 |
9 |
38 |
35 |
35 |
0 |
| CDI |
0 |
0 |
0 |
12 |
117 |
315 |
332 |
0 |
| VCDI |
0 |
0 |
0 |
20 |
241 |
1199 |
13056 |
30407 |
|
...date precedes bulletin
|
Date: 2022-04-21:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
1 |
1 |
0 |
4 |
0 |
| VODI |
0 |
0 |
1 |
1 |
11 |
4 |
26 |
0 |
| ODI |
0 |
0 |
0 |
11 |
32 |
14 |
26 |
0 |
| CDI |
0 |
0 |
0 |
4 |
127 |
167 |
167 |
0 |
| VCDI |
0 |
0 |
0 |
8 |
273 |
1332 |
14946 |
28710 |
|
|
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 |
1 |
0 |
0 |
0 |
| VODI |
0 |
0 |
1 |
3 |
10 |
4 |
30 |
0 |
| ODI |
0 |
0 |
0 |
9 |
35 |
14 |
28 |
0 |
| CDI |
0 |
0 |
0 |
4 |
108 |
129 |
161 |
0 |
| VCDI |
0 |
0 |
0 |
8 |
290 |
1370 |
14950 |
28710 |
|
Date: 2022-04-23:
| 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 |
1 |
1 |
0 |
0 |
0 |
| VODI |
0 |
0 |
1 |
4 |
5 |
2 |
24 |
0 |
| ODI |
0 |
0 |
0 |
15 |
30 |
30 |
34 |
1 |
| CDI |
0 |
0 |
0 |
5 |
100 |
129 |
254 |
7 |
| VCDI |
0 |
0 |
0 |
1 |
175 |
1598 |
16159 |
27290 |
|
|
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 |
1 |
0 |
0 |
0 |
| VODI |
0 |
0 |
1 |
7 |
7 |
2 |
25 |
0 |
| ODI |
0 |
0 |
0 |
13 |
31 |
29 |
31 |
1 |
| CDI |
0 |
0 |
0 |
4 |
87 |
111 |
274 |
6 |
| VCDI |
0 |
0 |
0 |
1 |
185 |
1617 |
16141 |
27291 |
|
Date: 2022-04-25:
| 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 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
2 |
2 |
8 |
10 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
11 |
44 |
55 |
0 |
0 |
| CDI |
0 |
0 |
0 |
16 |
121 |
291 |
103 |
0 |
| VCDI |
0 |
0 |
0 |
12 |
326 |
1318 |
14784 |
28762 |
|
|
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 |
1 |
0 |
2 |
13 |
7 |
0 |
0 |
| ODI |
0 |
0 |
2 |
8 |
27 |
42 |
10 |
0 |
| CDI |
0 |
1 |
0 |
19 |
100 |
183 |
140 |
0 |
| VCDI |
0 |
0 |
0 |
17 |
361 |
1433 |
14737 |
28762 |
|
Date: 2022-04-27:
| 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 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
2 |
2 |
7 |
6 |
0 |
0 |
0 |
| ODI |
0 |
5 |
7 |
20 |
27 |
16 |
0 |
0 |
| CDI |
0 |
0 |
4 |
64 |
108 |
200 |
91 |
4 |
| VCDI |
0 |
2 |
1 |
125 |
499 |
1628 |
17243 |
25805 |
|
|
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 |
1 |
0 |
0 |
0 |
| VODI |
0 |
1 |
0 |
2 |
7 |
1 |
0 |
0 |
| ODI |
0 |
4 |
8 |
12 |
42 |
48 |
1 |
0 |
| CDI |
0 |
2 |
3 |
42 |
85 |
124 |
125 |
3 |
| VCDI |
0 |
2 |
3 |
160 |
505 |
1671 |
17208 |
25806 |
|
Date: 2022-04-29:
| 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 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
1 |
0 |
0 |
3 |
1 |
0 |
0 |
| VODI |
0 |
6 |
0 |
8 |
11 |
5 |
1 |
0 |
| ODI |
0 |
14 |
5 |
18 |
29 |
13 |
24 |
0 |
| CDI |
0 |
16 |
7 |
37 |
113 |
139 |
176 |
10 |
| VCDI |
0 |
15 |
21 |
94 |
625 |
1793 |
16066 |
26615 |
|
|
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 |
1 |
0 |
0 |
1 |
5 |
1 |
0 |
| VODI |
0 |
7 |
1 |
2 |
1 |
5 |
21 |
0 |
| ODI |
0 |
13 |
5 |
30 |
35 |
31 |
36 |
0 |
| CDI |
0 |
17 |
7 |
42 |
149 |
239 |
249 |
9 |
| VCDI |
0 |
14 |
20 |
83 |
595 |
1671 |
15960 |
26616 |
|
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