Validation of sea ice concentration - American sector
Bulletin date: 2023-05-04
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-04-28:
| 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 |
5 |
0 |
2 |
0 |
0 |
| VODI |
0 |
0 |
0 |
13 |
3 |
12 |
6 |
0 |
| ODI |
0 |
0 |
0 |
12 |
25 |
54 |
46 |
2 |
| CDI |
0 |
0 |
0 |
8 |
286 |
309 |
273 |
23 |
| VCDI |
0 |
0 |
0 |
17 |
505 |
2168 |
10097 |
32000 |
|
...date precedes bulletin
|
Date: 2023-04-30:
| 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 |
3 |
2 |
1 |
0 |
0 |
| VODI |
0 |
0 |
0 |
11 |
7 |
9 |
8 |
0 |
| ODI |
0 |
0 |
0 |
11 |
22 |
46 |
52 |
0 |
| CDI |
0 |
0 |
0 |
6 |
279 |
440 |
335 |
12 |
| VCDI |
0 |
0 |
0 |
9 |
417 |
1958 |
11386 |
30852 |
|
...date precedes bulletin
|
Date: 2023-05-02:
| 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 |
4 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
25 |
8 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
34 |
51 |
5 |
0 |
0 |
| ODI |
0 |
0 |
0 |
37 |
159 |
73 |
5 |
0 |
| CDI |
0 |
0 |
0 |
21 |
757 |
659 |
101 |
4 |
| VCDI |
0 |
55 |
1 |
74 |
526 |
2442 |
12381 |
28444 |
|
...date precedes bulletin
|
Date: 2023-05-04:
| 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 |
7 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
32 |
7 |
1 |
0 |
0 |
| VODI |
0 |
0 |
0 |
49 |
54 |
16 |
11 |
0 |
| ODI |
0 |
0 |
0 |
80 |
155 |
98 |
25 |
6 |
| CDI |
0 |
0 |
0 |
86 |
596 |
719 |
253 |
27 |
| VCDI |
0 |
0 |
0 |
96 |
745 |
2472 |
12735 |
27596 |
|
|
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 |
9 |
2 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
24 |
12 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
55 |
53 |
16 |
10 |
0 |
| ODI |
0 |
0 |
0 |
90 |
159 |
99 |
26 |
6 |
| CDI |
0 |
0 |
0 |
75 |
589 |
727 |
276 |
25 |
| VCDI |
0 |
0 |
0 |
97 |
742 |
2464 |
12712 |
27598 |
|
Date: 2023-05-06:
| 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 |
6 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
26 |
6 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
52 |
60 |
29 |
11 |
0 |
| ODI |
0 |
0 |
0 |
63 |
158 |
181 |
23 |
0 |
| CDI |
0 |
0 |
0 |
96 |
438 |
752 |
546 |
0 |
| VCDI |
0 |
0 |
0 |
115 |
555 |
2952 |
13612 |
26185 |
|
|
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 |
5 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
0 |
22 |
9 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
54 |
53 |
25 |
9 |
0 |
| ODI |
0 |
0 |
0 |
81 |
168 |
174 |
30 |
0 |
| CDI |
0 |
0 |
0 |
79 |
447 |
798 |
557 |
0 |
| VCDI |
0 |
0 |
0 |
117 |
540 |
2917 |
13596 |
26185 |
|
Date: 2023-05-08:
| 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 |
1 |
0 |
20 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
3 |
103 |
9 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
174 |
81 |
7 |
1 |
0 |
| ODI |
0 |
0 |
0 |
99 |
279 |
114 |
7 |
0 |
| CDI |
0 |
0 |
0 |
209 |
502 |
884 |
200 |
17 |
| VCDI |
0 |
0 |
0 |
80 |
683 |
2544 |
15363 |
24486 |
|
|
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 |
6 |
0 |
0 |
0 |
0 |
| OW |
0 |
1 |
0 |
53 |
13 |
0 |
0 |
0 |
| VODI |
0 |
0 |
2 |
111 |
76 |
18 |
4 |
0 |
| ODI |
0 |
0 |
1 |
117 |
150 |
171 |
55 |
0 |
| CDI |
0 |
0 |
0 |
157 |
406 |
676 |
663 |
22 |
| VCDI |
0 |
0 |
0 |
241 |
909 |
2684 |
14849 |
24481 |
|
Date: 2023-05-10:
| 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 |
2 |
6 |
51 |
9 |
0 |
0 |
0 |
| OW |
0 |
0 |
3 |
73 |
28 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
115 |
149 |
6 |
1 |
0 |
| ODI |
0 |
0 |
0 |
97 |
235 |
157 |
6 |
0 |
| CDI |
0 |
0 |
0 |
166 |
550 |
949 |
419 |
2 |
| VCDI |
0 |
0 |
0 |
179 |
651 |
2968 |
14191 |
24853 |
|
|
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 |
10 |
6 |
0 |
0 |
0 |
| OW |
0 |
1 |
0 |
28 |
38 |
0 |
0 |
0 |
| VODI |
0 |
1 |
8 |
86 |
112 |
18 |
6 |
0 |
| ODI |
0 |
0 |
1 |
102 |
207 |
211 |
44 |
0 |
| CDI |
0 |
0 |
0 |
150 |
442 |
816 |
935 |
25 |
| VCDI |
0 |
0 |
0 |
305 |
817 |
3035 |
13632 |
24830 |
|
Date: 2023-05-12:
| 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 |
66 |
11 |
0 |
0 |
0 |
| OW |
0 |
3 |
10 |
62 |
53 |
0 |
0 |
0 |
| VODI |
0 |
18 |
25 |
71 |
176 |
15 |
0 |
0 |
| ODI |
0 |
1 |
8 |
94 |
268 |
241 |
11 |
0 |
| CDI |
0 |
42 |
14 |
165 |
667 |
989 |
503 |
3 |
| VCDI |
0 |
10 |
33 |
219 |
732 |
3161 |
14488 |
23707 |
|
|
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 |
16 |
26 |
0 |
0 |
0 |
| OW |
0 |
4 |
3 |
40 |
42 |
1 |
0 |
0 |
| VODI |
0 |
7 |
13 |
88 |
139 |
27 |
5 |
0 |
| ODI |
0 |
20 |
9 |
98 |
205 |
229 |
35 |
0 |
| CDI |
0 |
32 |
14 |
112 |
611 |
1157 |
966 |
9 |
| VCDI |
0 |
11 |
51 |
323 |
884 |
2992 |
13996 |
23701 |
|
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