Validation of sea ice concentration - American sector
Bulletin date: 2024-03-28
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2024-03-22:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
6 |
7 |
3 |
0 |
| CDI |
0 |
0 |
0 |
0 |
15 |
52 |
27 |
4 |
| VCDI |
0 |
0 |
0 |
16 |
176 |
930 |
13693 |
30936 |
|
...date precedes bulletin
|
Date: 2024-03-24:
| 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 |
0 |
0 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
| CDI |
0 |
0 |
0 |
1 |
1 |
36 |
42 |
0 |
| VCDI |
0 |
0 |
0 |
4 |
90 |
759 |
14321 |
30611 |
|
...date precedes bulletin
|
Date: 2024-03-26:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| CDI |
0 |
0 |
0 |
0 |
1 |
18 |
13 |
0 |
| VCDI |
0 |
0 |
0 |
11 |
110 |
1127 |
13273 |
31313 |
|
...date precedes bulletin
|
Date: 2024-03-28:
| 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 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
1 |
3 |
0 |
1 |
0 |
| CDI |
0 |
0 |
0 |
3 |
15 |
40 |
61 |
7 |
| VCDI |
0 |
0 |
0 |
28 |
218 |
1595 |
16179 |
27715 |
|
|
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 |
4 |
1 |
3 |
0 |
| CDI |
0 |
0 |
0 |
3 |
16 |
51 |
64 |
10 |
| VCDI |
0 |
0 |
0 |
28 |
216 |
1583 |
16174 |
27712 |
|
Date: 2024-03-30:
| 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 |
1 |
1 |
0 |
| ODI |
0 |
0 |
0 |
0 |
5 |
6 |
3 |
0 |
| CDI |
0 |
0 |
0 |
1 |
35 |
38 |
34 |
1 |
| VCDI |
0 |
0 |
4 |
46 |
285 |
1672 |
14832 |
28902 |
|
|
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 |
1 |
2 |
0 |
| ODI |
0 |
0 |
0 |
0 |
8 |
8 |
2 |
0 |
| CDI |
0 |
0 |
0 |
1 |
34 |
49 |
50 |
5 |
| VCDI |
0 |
0 |
4 |
46 |
283 |
1659 |
14816 |
28898 |
|
Date: 2024-04-01:
| 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 |
1 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
4 |
0 |
5 |
1 |
0 |
0 |
0 |
| ODI |
0 |
3 |
1 |
3 |
5 |
5 |
4 |
0 |
| CDI |
0 |
3 |
2 |
3 |
56 |
64 |
46 |
0 |
| VCDI |
0 |
2 |
4 |
39 |
362 |
1630 |
13613 |
30009 |
|
|
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 |
3 |
1 |
2 |
0 |
0 |
1 |
0 |
| ODI |
0 |
2 |
0 |
4 |
6 |
14 |
3 |
0 |
| CDI |
0 |
4 |
1 |
3 |
57 |
73 |
117 |
0 |
| VCDI |
0 |
4 |
6 |
41 |
361 |
1612 |
13542 |
30009 |
|
Date: 2024-04-03:
| 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 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
2 |
4 |
3 |
10 |
| CDI |
0 |
0 |
0 |
9 |
34 |
39 |
84 |
63 |
| VCDI |
0 |
0 |
0 |
6 |
204 |
1138 |
12658 |
31608 |
|
|
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 |
0 |
0 |
| ODI |
0 |
0 |
0 |
1 |
4 |
3 |
4 |
8 |
| CDI |
0 |
0 |
0 |
9 |
48 |
81 |
124 |
28 |
| VCDI |
0 |
0 |
0 |
6 |
190 |
1096 |
12617 |
31645 |
|
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 |
|
|
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 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
0 |
5 |
18 |
13 |
1 |
| CDI |
0 |
0 |
0 |
3 |
35 |
57 |
99 |
20 |
| VCDI |
0 |
0 |
0 |
15 |
203 |
1189 |
11997 |
32208 |
|
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