Validation of sea ice concentration - American sector
Bulletin date: 2024-04-11
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2024-04-05:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
0 |
| ODI |
0 |
0 |
0 |
0 |
0 |
1 |
20 |
3 |
| CDI |
0 |
0 |
0 |
0 |
23 |
65 |
189 |
24 |
| VCDI |
0 |
0 |
0 |
18 |
222 |
1199 |
11898 |
32202 |
|
...date precedes bulletin
|
Date: 2024-04-07:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
0 |
2 |
2 |
0 |
| ODI |
0 |
0 |
0 |
0 |
0 |
6 |
6 |
2 |
| CDI |
0 |
5 |
2 |
2 |
17 |
106 |
201 |
25 |
| VCDI |
0 |
2 |
3 |
31 |
221 |
1357 |
11584 |
32292 |
|
...date precedes bulletin
|
Date: 2024-04-09:
| 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 |
2 |
6 |
2 |
0 |
| ODI |
0 |
0 |
0 |
1 |
9 |
3 |
23 |
0 |
| CDI |
0 |
0 |
0 |
5 |
37 |
100 |
158 |
0 |
| VCDI |
0 |
0 |
1 |
32 |
251 |
1454 |
12256 |
31525 |
|
...date precedes bulletin
|
Date: 2024-04-11:
| 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 |
1 |
1 |
0 |
1 |
0 |
0 |
| ODI |
0 |
0 |
3 |
5 |
8 |
22 |
22 |
0 |
| CDI |
0 |
0 |
2 |
9 |
35 |
162 |
259 |
0 |
| VCDI |
0 |
5 |
7 |
49 |
307 |
1657 |
13926 |
29385 |
|
|
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 |
1 |
1 |
0 |
1 |
2 |
0 |
| ODI |
0 |
0 |
3 |
4 |
7 |
22 |
20 |
0 |
| CDI |
0 |
0 |
2 |
10 |
37 |
170 |
286 |
0 |
| VCDI |
0 |
5 |
7 |
49 |
306 |
1649 |
13899 |
29385 |
|
Date: 2024-04-13:
| 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 |
0 |
0 |
11 |
5 |
4 |
2 |
0 |
| ODI |
0 |
0 |
3 |
7 |
10 |
16 |
7 |
0 |
| CDI |
0 |
6 |
5 |
17 |
46 |
126 |
99 |
5 |
| VCDI |
0 |
19 |
10 |
53 |
359 |
1809 |
14037 |
29209 |
|
|
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 |
11 |
7 |
5 |
2 |
0 |
| ODI |
0 |
0 |
3 |
8 |
12 |
21 |
10 |
0 |
| CDI |
0 |
6 |
4 |
18 |
46 |
140 |
127 |
3 |
| VCDI |
0 |
19 |
11 |
51 |
356 |
1789 |
14006 |
29211 |
|
Date: 2024-04-15:
| 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 |
15 |
2 |
3 |
2 |
0 |
0 |
0 |
| VODI |
0 |
24 |
5 |
23 |
7 |
1 |
2 |
0 |
| ODI |
0 |
21 |
9 |
26 |
25 |
11 |
3 |
0 |
| CDI |
0 |
31 |
14 |
56 |
98 |
99 |
37 |
0 |
| VCDI |
0 |
44 |
45 |
179 |
389 |
1115 |
10407 |
33173 |
|
|
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 |
1 |
1 |
0 |
0 |
0 |
| VODI |
0 |
7 |
0 |
11 |
3 |
4 |
2 |
0 |
| ODI |
0 |
23 |
8 |
14 |
12 |
16 |
2 |
0 |
| CDI |
0 |
29 |
15 |
58 |
63 |
51 |
70 |
1 |
| VCDI |
0 |
74 |
52 |
203 |
442 |
1155 |
10375 |
33172 |
|
Date: 2024-04-17:
| 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 |
3 |
0 |
0 |
2 |
0 |
0 |
0 |
| VODI |
0 |
27 |
1 |
7 |
12 |
2 |
2 |
0 |
| ODI |
0 |
35 |
6 |
17 |
17 |
6 |
2 |
0 |
| CDI |
0 |
47 |
15 |
94 |
86 |
55 |
65 |
1 |
| VCDI |
0 |
38 |
24 |
23655 |
3113 |
2329 |
10888 |
5317 |
|
|
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 |
8 |
1 |
1 |
14 |
4 |
2 |
0 |
| ODI |
0 |
17 |
2 |
12 |
21 |
5 |
2 |
0 |
| CDI |
0 |
43 |
8 |
47 |
55 |
39 |
79 |
4 |
| VCDI |
0 |
82 |
35 |
23713 |
3138 |
2344 |
10874 |
5314 |
|
Date: 2024-04-19:
| 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 |
3 |
1 |
3 |
1 |
0 |
0 |
0 |
| VODI |
0 |
20 |
5 |
19 |
5 |
2 |
0 |
0 |
| ODI |
0 |
36 |
9 |
25 |
9 |
12 |
1 |
0 |
| CDI |
0 |
66 |
26 |
74 |
118 |
128 |
166 |
1 |
| VCDI |
0 |
105 |
62 |
251 |
519 |
2191 |
14377 |
27631 |
|
|
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 |
5 |
4 |
14 |
0 |
0 |
2 |
4 |
| ODI |
0 |
13 |
7 |
17 |
8 |
5 |
11 |
8 |
| CDI |
0 |
38 |
14 |
43 |
57 |
77 |
155 |
17 |
| VCDI |
0 |
174 |
78 |
297 |
587 |
2251 |
14376 |
27603 |
|
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