Validation of sea ice concentration - American sector
Bulletin date: 2023-03-23
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-03-17:
| 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 |
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 |
2 |
18 |
27 |
13 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
8 |
524 |
12127 |
33147 |
|
...date precedes bulletin
|
Date: 2023-03-19:
| 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 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
1 |
16 |
3 |
0 |
| CDI |
0 |
0 |
0 |
0 |
19 |
80 |
69 |
2 |
| VCDI |
0 |
0 |
0 |
0 |
43 |
569 |
15365 |
29699 |
|
...date precedes bulletin
|
Date: 2023-03-21:
| 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 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
2 |
33 |
13 |
0 |
| ODI |
0 |
0 |
0 |
0 |
34 |
33 |
15 |
0 |
| CDI |
0 |
0 |
0 |
4 |
38 |
88 |
114 |
1 |
| VCDI |
0 |
0 |
0 |
9 |
115 |
721 |
15832 |
28814 |
|
...date precedes bulletin
|
Date: 2023-03-23:
| 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 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
2 |
| ODI |
0 |
0 |
0 |
0 |
51 |
7 |
54 |
4 |
| CDI |
0 |
0 |
0 |
0 |
35 |
50 |
139 |
4 |
| VCDI |
0 |
0 |
0 |
0 |
112 |
597 |
13145 |
31665 |
|
|
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 |
47 |
7 |
41 |
5 |
| CDI |
0 |
0 |
0 |
0 |
41 |
45 |
142 |
5 |
| VCDI |
0 |
0 |
0 |
0 |
111 |
602 |
13155 |
31665 |
|
Date: 2023-03-25:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
3 |
27 |
1 |
0 |
| CDI |
0 |
0 |
0 |
0 |
44 |
72 |
28 |
1 |
| VCDI |
0 |
0 |
0 |
0 |
139 |
1010 |
17416 |
27125 |
|
|
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 |
4 |
28 |
2 |
0 |
| CDI |
0 |
0 |
0 |
0 |
42 |
68 |
22 |
1 |
| VCDI |
0 |
0 |
0 |
0 |
140 |
1013 |
17421 |
27125 |
|
Date: 2023-03-27:
| 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 |
0 |
0 |
0 |
0 |
0 |
2 |
0 |
| ODI |
0 |
0 |
0 |
6 |
31 |
50 |
17 |
0 |
| CDI |
0 |
0 |
0 |
12 |
116 |
104 |
167 |
4 |
| VCDI |
0 |
0 |
0 |
1 |
216 |
1191 |
18613 |
25336 |
|
|
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 |
24 |
8 |
0 |
| ODI |
0 |
0 |
0 |
2 |
20 |
33 |
24 |
0 |
| CDI |
0 |
0 |
0 |
10 |
107 |
102 |
95 |
2 |
| VCDI |
0 |
0 |
0 |
7 |
236 |
1186 |
18672 |
25338 |
|
Date: 2023-03-29:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
0 |
3 |
2 |
0 |
| ODI |
0 |
0 |
0 |
0 |
0 |
14 |
12 |
0 |
| CDI |
0 |
0 |
0 |
10 |
40 |
57 |
72 |
40 |
| VCDI |
0 |
0 |
0 |
0 |
129 |
974 |
12670 |
31843 |
|
|
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 |
3 |
2 |
0 |
| ODI |
0 |
0 |
0 |
0 |
0 |
12 |
11 |
0 |
| CDI |
0 |
0 |
0 |
9 |
30 |
42 |
102 |
76 |
| VCDI |
0 |
0 |
0 |
1 |
139 |
991 |
12641 |
31807 |
|
Date: 2023-03-31:
| 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 |
6 |
12 |
12 |
0 |
| CDI |
0 |
0 |
0 |
3 |
24 |
68 |
62 |
4 |
| VCDI |
0 |
0 |
0 |
7 |
48 |
934 |
10643 |
34043 |
|
|
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 |
2 |
13 |
25 |
0 |
| CDI |
0 |
0 |
0 |
2 |
21 |
33 |
136 |
97 |
| VCDI |
0 |
0 |
0 |
8 |
55 |
968 |
10556 |
33950 |
|
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