Validation of sea ice concentration
Bulletin date: 2022-11-17
Model vs. observations, sea ice class contingency tables
Date: 2022-11-11:
| 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 |
20176 |
6023 |
361 |
279 |
112 |
81 |
38 |
0 |
| OW |
0 |
52 |
88 |
134 |
44 |
40 |
14 |
0 |
| VODI |
0 |
17 |
51 |
103 |
74 |
91 |
44 |
0 |
| ODI |
0 |
4 |
15 |
43 |
59 |
100 |
64 |
0 |
| CDI |
0 |
0 |
18 |
45 |
52 |
174 |
228 |
2 |
| VCDI |
0 |
0 |
4 |
29 |
78 |
350 |
4951 |
4121 |
|
...date precedes bulletin
|
Date: 2022-11-15:
| 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 |
18286 |
7083 |
807 |
341 |
234 |
124 |
32 |
0 |
| OW |
0 |
26 |
69 |
90 |
91 |
58 |
10 |
0 |
| VODI |
0 |
16 |
31 |
70 |
90 |
112 |
18 |
0 |
| ODI |
0 |
5 |
15 |
45 |
61 |
126 |
52 |
0 |
| CDI |
0 |
0 |
8 |
36 |
41 |
167 |
240 |
11 |
| VCDI |
0 |
0 |
2 |
25 |
57 |
382 |
4735 |
4563 |
|
...date precedes bulletin
|
Date: 2022-11-17:
| 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 |
18908 |
6690 |
548 |
346 |
142 |
100 |
49 |
0 |
| OW |
0 |
58 |
101 |
69 |
53 |
37 |
7 |
0 |
| VODI |
0 |
29 |
53 |
100 |
77 |
103 |
30 |
0 |
| ODI |
0 |
7 |
27 |
50 |
49 |
122 |
56 |
0 |
| CDI |
0 |
3 |
12 |
42 |
61 |
122 |
219 |
17 |
| VCDI |
0 |
0 |
10 |
34 |
56 |
403 |
5247 |
4122 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
18908 |
6673 |
564 |
349 |
146 |
103 |
50 |
0 |
| OW |
0 |
70 |
78 |
75 |
47 |
38 |
8 |
0 |
| VODI |
0 |
32 |
57 |
88 |
81 |
109 |
29 |
0 |
| ODI |
0 |
8 |
27 |
47 |
43 |
110 |
49 |
0 |
| CDI |
0 |
3 |
14 |
42 |
64 |
122 |
205 |
18 |
| VCDI |
0 |
1 |
11 |
40 |
57 |
405 |
5267 |
4121 |
|
Date: 2022-11-21:
| 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 |
18459 |
6758 |
726 |
231 |
103 |
65 |
116 |
0 |
| OW |
0 |
34 |
146 |
74 |
64 |
46 |
16 |
0 |
| VODI |
0 |
8 |
100 |
82 |
117 |
109 |
42 |
0 |
| ODI |
0 |
0 |
24 |
51 |
71 |
111 |
85 |
0 |
| CDI |
0 |
0 |
6 |
23 |
33 |
195 |
295 |
15 |
| VCDI |
0 |
0 |
8 |
20 |
46 |
226 |
4669 |
4985 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
18459 |
6653 |
689 |
219 |
98 |
65 |
117 |
0 |
| OW |
0 |
137 |
136 |
61 |
55 |
33 |
16 |
0 |
| VODI |
0 |
10 |
114 |
81 |
97 |
83 |
32 |
0 |
| ODI |
0 |
0 |
47 |
49 |
72 |
101 |
62 |
0 |
| CDI |
0 |
0 |
13 |
39 |
58 |
161 |
256 |
22 |
| VCDI |
0 |
0 |
11 |
32 |
54 |
309 |
4740 |
4978 |
|
Date: 2022-11-23:
| 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 |
18150 |
7165 |
443 |
328 |
136 |
40 |
98 |
0 |
| OW |
0 |
112 |
112 |
73 |
42 |
39 |
12 |
0 |
| VODI |
0 |
18 |
108 |
113 |
87 |
72 |
33 |
0 |
| ODI |
0 |
9 |
25 |
61 |
82 |
101 |
68 |
0 |
| CDI |
0 |
4 |
7 |
35 |
68 |
193 |
426 |
17 |
| VCDI |
0 |
4 |
25 |
32 |
44 |
308 |
6109 |
3360 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
18150 |
6989 |
423 |
285 |
114 |
36 |
96 |
0 |
| OW |
0 |
197 |
101 |
67 |
40 |
23 |
10 |
0 |
| VODI |
0 |
99 |
95 |
105 |
84 |
69 |
26 |
0 |
| ODI |
0 |
15 |
56 |
77 |
67 |
75 |
57 |
0 |
| CDI |
0 |
5 |
13 |
63 |
98 |
198 |
365 |
21 |
| VCDI |
0 |
7 |
32 |
45 |
56 |
352 |
6192 |
3356 |
|
Date: 2022-11-25:
| 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 |
17792 |
7224 |
623 |
296 |
118 |
87 |
103 |
0 |
| OW |
0 |
50 |
154 |
88 |
39 |
48 |
26 |
0 |
| VODI |
0 |
5 |
97 |
115 |
54 |
75 |
53 |
0 |
| ODI |
0 |
0 |
37 |
65 |
73 |
107 |
86 |
0 |
| CDI |
0 |
0 |
7 |
31 |
65 |
195 |
432 |
3 |
| VCDI |
0 |
0 |
10 |
38 |
35 |
359 |
5862 |
3707 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17792 |
7057 |
577 |
241 |
104 |
78 |
95 |
0 |
| OW |
0 |
156 |
138 |
93 |
34 |
32 |
18 |
0 |
| VODI |
0 |
65 |
135 |
122 |
56 |
68 |
53 |
0 |
| ODI |
0 |
1 |
47 |
76 |
51 |
98 |
74 |
0 |
| CDI |
0 |
0 |
18 |
54 |
71 |
141 |
290 |
14 |
| VCDI |
0 |
0 |
13 |
47 |
68 |
454 |
6032 |
3696 |
|
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