Validation of sea ice concentration - American sector
Bulletin date: 2024-04-18
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2024-04-12:
| 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 |
6 |
5 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
3 |
17 |
23 |
28 |
0 |
| CDI |
0 |
1 |
0 |
12 |
51 |
175 |
215 |
0 |
| VCDI |
0 |
3 |
12 |
42 |
389 |
1944 |
14258 |
28682 |
|
...date precedes bulletin
|
Date: 2024-04-14:
| 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 |
1 |
0 |
0 |
0 |
| VODI |
0 |
2 |
2 |
5 |
12 |
2 |
1 |
0 |
| ODI |
0 |
11 |
7 |
13 |
24 |
11 |
1 |
0 |
| CDI |
0 |
20 |
15 |
36 |
73 |
52 |
33 |
1 |
| VCDI |
0 |
38 |
37 |
123 |
458 |
1349 |
14355 |
29184 |
|
...date precedes bulletin
|
Date: 2024-04-16:
| 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 |
10 |
1 |
2 |
1 |
0 |
0 |
0 |
| VODI |
0 |
29 |
6 |
22 |
5 |
4 |
1 |
0 |
| ODI |
0 |
34 |
8 |
24 |
11 |
8 |
3 |
0 |
| CDI |
0 |
51 |
18 |
60 |
74 |
74 |
43 |
0 |
| VCDI |
0 |
69 |
52 |
177 |
357 |
1026 |
12719 |
30977 |
|
...date precedes bulletin
|
Date: 2024-04-18:
| 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 |
18 |
4 |
3 |
7 |
2 |
1 |
0 |
| ODI |
0 |
29 |
8 |
20 |
10 |
5 |
5 |
0 |
| CDI |
0 |
59 |
34 |
79 |
103 |
98 |
112 |
0 |
| VCDI |
0 |
28 |
40 |
167 |
354 |
1364 |
15318 |
27998 |
|
|
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 |
14 |
4 |
3 |
6 |
3 |
1 |
0 |
| ODI |
0 |
27 |
6 |
13 |
11 |
5 |
4 |
0 |
| CDI |
0 |
64 |
36 |
100 |
114 |
92 |
124 |
0 |
| VCDI |
0 |
29 |
40 |
153 |
343 |
1369 |
15307 |
27998 |
|
Date: 2024-04-20:
| 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 |
11 |
1 |
9 |
1 |
0 |
0 |
0 |
| VODI |
0 |
29 |
7 |
16 |
3 |
2 |
1 |
0 |
| ODI |
0 |
40 |
4 |
30 |
15 |
12 |
10 |
0 |
| CDI |
0 |
58 |
19 |
89 |
118 |
136 |
163 |
0 |
| VCDI |
0 |
110 |
59 |
294 |
516 |
2021 |
15197 |
26895 |
|
|
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 |
5 |
1 |
0 |
0 |
0 |
| VODI |
0 |
28 |
5 |
18 |
5 |
2 |
1 |
0 |
| ODI |
0 |
37 |
7 |
29 |
16 |
16 |
14 |
0 |
| CDI |
0 |
71 |
18 |
90 |
112 |
148 |
150 |
0 |
| VCDI |
0 |
107 |
59 |
296 |
519 |
2005 |
15206 |
26895 |
|
Date: 2024-04-22:
| 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 |
2 |
0 |
0 |
3 |
0 |
0 |
0 |
| VODI |
0 |
7 |
8 |
14 |
27 |
3 |
0 |
0 |
| ODI |
0 |
4 |
4 |
34 |
46 |
17 |
0 |
0 |
| CDI |
0 |
3 |
2 |
66 |
169 |
134 |
58 |
0 |
| VCDI |
0 |
0 |
0 |
27 |
355 |
1731 |
15892 |
27260 |
|
|
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 |
2 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
3 |
1 |
0 |
0 |
| VODI |
0 |
5 |
0 |
9 |
29 |
1 |
0 |
0 |
| ODI |
0 |
1 |
9 |
20 |
38 |
15 |
1 |
0 |
| CDI |
0 |
10 |
3 |
62 |
111 |
99 |
87 |
0 |
| VCDI |
0 |
0 |
2 |
50 |
417 |
1769 |
15862 |
27260 |
|
Date: 2024-04-24:
| 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 |
2 |
0 |
6 |
0 |
0 |
0 |
0 |
| VODI |
0 |
4 |
7 |
22 |
6 |
0 |
0 |
0 |
| ODI |
0 |
6 |
6 |
20 |
12 |
3 |
0 |
0 |
| CDI |
0 |
13 |
18 |
61 |
68 |
68 |
58 |
12 |
| VCDI |
0 |
6 |
6 |
82 |
345 |
1761 |
15216 |
28058 |
|
|
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 |
1 |
6 |
2 |
0 |
0 |
0 |
| VODI |
0 |
6 |
4 |
19 |
6 |
0 |
0 |
0 |
| ODI |
0 |
6 |
9 |
18 |
15 |
10 |
5 |
0 |
| CDI |
0 |
12 |
12 |
52 |
66 |
64 |
99 |
6 |
| VCDI |
0 |
6 |
11 |
96 |
342 |
1758 |
15170 |
28064 |
|
Date: 2024-04-26:
| 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 |
0 |
0 |
0 |
0 |
| VODI |
0 |
1 |
0 |
10 |
8 |
0 |
0 |
0 |
| ODI |
0 |
4 |
6 |
12 |
28 |
17 |
23 |
0 |
| CDI |
0 |
18 |
15 |
80 |
220 |
128 |
154 |
9 |
| VCDI |
0 |
0 |
6 |
98 |
688 |
2595 |
18135 |
23611 |
|
|
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 |
4 |
4 |
0 |
0 |
0 |
| VODI |
0 |
2 |
2 |
13 |
17 |
0 |
2 |
0 |
| ODI |
0 |
7 |
5 |
10 |
27 |
2 |
8 |
0 |
| CDI |
0 |
11 |
16 |
58 |
160 |
76 |
127 |
2 |
| VCDI |
0 |
3 |
4 |
115 |
736 |
2662 |
18175 |
23618 |
|
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