Validation of sea ice concentration
Bulletin date: 2022-11-24
Model vs. observations, sea ice class contingency tables
Date: 2022-11-18:
| 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 |
18632 |
6896 |
613 |
258 |
105 |
91 |
57 |
0 |
| OW |
1 |
65 |
132 |
75 |
66 |
27 |
6 |
0 |
| VODI |
0 |
15 |
82 |
106 |
68 |
69 |
17 |
0 |
| ODI |
0 |
1 |
35 |
56 |
93 |
121 |
32 |
0 |
| CDI |
0 |
0 |
12 |
34 |
59 |
178 |
217 |
37 |
| VCDI |
0 |
0 |
5 |
25 |
70 |
326 |
4643 |
4834 |
|
...date precedes bulletin
|
Date: 2022-11-22:
| 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 |
18474 |
6784 |
626 |
291 |
77 |
53 |
122 |
0 |
| OW |
0 |
82 |
112 |
89 |
53 |
27 |
14 |
0 |
| VODI |
0 |
19 |
94 |
115 |
94 |
83 |
37 |
0 |
| ODI |
0 |
5 |
28 |
49 |
76 |
118 |
60 |
0 |
| CDI |
0 |
5 |
6 |
24 |
65 |
171 |
403 |
6 |
| VCDI |
0 |
3 |
22 |
40 |
43 |
396 |
6206 |
3187 |
|
...date precedes bulletin
|
Date: 2022-11-24:
| 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 |
17990 |
6901 |
715 |
314 |
151 |
105 |
98 |
0 |
| OW |
0 |
49 |
110 |
117 |
41 |
53 |
23 |
0 |
| VODI |
0 |
5 |
86 |
104 |
70 |
104 |
51 |
0 |
| ODI |
0 |
0 |
31 |
71 |
62 |
122 |
102 |
0 |
| CDI |
0 |
0 |
1 |
29 |
54 |
195 |
442 |
19 |
| VCDI |
0 |
0 |
2 |
32 |
29 |
265 |
4874 |
4742 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17990 |
6913 |
730 |
323 |
162 |
111 |
101 |
0 |
| OW |
0 |
32 |
86 |
108 |
32 |
46 |
21 |
0 |
| VODI |
0 |
10 |
94 |
103 |
69 |
101 |
47 |
0 |
| ODI |
0 |
0 |
30 |
74 |
51 |
120 |
109 |
0 |
| CDI |
0 |
0 |
3 |
25 |
64 |
182 |
416 |
17 |
| VCDI |
0 |
0 |
2 |
34 |
29 |
284 |
4896 |
4744 |
|
Date: 2022-11-28:
| 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 |
17968 |
7291 |
515 |
256 |
146 |
139 |
129 |
0 |
| OW |
0 |
45 |
133 |
76 |
39 |
47 |
19 |
0 |
| VODI |
0 |
13 |
89 |
97 |
66 |
60 |
63 |
0 |
| ODI |
0 |
4 |
36 |
41 |
68 |
113 |
130 |
0 |
| CDI |
0 |
0 |
10 |
37 |
30 |
131 |
445 |
0 |
| VCDI |
0 |
0 |
12 |
37 |
65 |
289 |
6243 |
3277 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17968 |
7214 |
454 |
240 |
146 |
149 |
137 |
0 |
| OW |
0 |
78 |
126 |
51 |
43 |
37 |
25 |
0 |
| VODI |
0 |
46 |
106 |
89 |
46 |
53 |
59 |
0 |
| ODI |
0 |
15 |
57 |
57 |
46 |
79 |
116 |
0 |
| CDI |
0 |
0 |
30 |
54 |
48 |
105 |
340 |
2 |
| VCDI |
0 |
0 |
22 |
53 |
85 |
356 |
6352 |
3275 |
|
Date: 2022-11-30:
| 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 |
17912 |
7247 |
598 |
246 |
179 |
201 |
109 |
0 |
| OW |
0 |
85 |
127 |
86 |
67 |
39 |
17 |
0 |
| VODI |
0 |
29 |
80 |
89 |
86 |
77 |
41 |
0 |
| ODI |
0 |
8 |
35 |
55 |
81 |
134 |
99 |
0 |
| CDI |
0 |
0 |
29 |
39 |
83 |
183 |
458 |
7 |
| VCDI |
0 |
0 |
24 |
46 |
91 |
273 |
5291 |
3908 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17912 |
7164 |
534 |
239 |
193 |
203 |
116 |
0 |
| OW |
0 |
118 |
113 |
64 |
51 |
47 |
19 |
0 |
| VODI |
0 |
63 |
102 |
81 |
74 |
77 |
30 |
0 |
| ODI |
0 |
15 |
55 |
52 |
60 |
129 |
75 |
0 |
| CDI |
0 |
7 |
31 |
58 |
92 |
171 |
422 |
5 |
| VCDI |
0 |
2 |
58 |
67 |
117 |
280 |
5353 |
3910 |
|
Date: 2022-12-02:
| 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 |
17827 |
7208 |
818 |
241 |
180 |
103 |
146 |
0 |
| OW |
0 |
96 |
176 |
86 |
53 |
33 |
23 |
0 |
| VODI |
0 |
28 |
153 |
85 |
84 |
75 |
32 |
0 |
| ODI |
0 |
8 |
77 |
73 |
80 |
114 |
63 |
0 |
| CDI |
0 |
2 |
58 |
64 |
61 |
171 |
253 |
0 |
| VCDI |
0 |
0 |
54 |
80 |
98 |
364 |
5231 |
3861 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17827 |
7123 |
717 |
243 |
176 |
107 |
154 |
0 |
| OW |
0 |
140 |
166 |
56 |
53 |
28 |
14 |
0 |
| VODI |
0 |
54 |
167 |
71 |
71 |
86 |
25 |
0 |
| ODI |
0 |
15 |
101 |
70 |
60 |
105 |
60 |
0 |
| CDI |
0 |
8 |
94 |
87 |
87 |
171 |
356 |
0 |
| VCDI |
0 |
2 |
91 |
102 |
109 |
363 |
5139 |
3861 |
|
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