Validation of sea ice concentration
Bulletin date: 2022-01-06
Model vs. observations, sea ice class contingency tables
Date: 2021-12-31:
| 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 |
13332 |
5857 |
1087 |
356 |
130 |
170 |
130 |
0 |
| OW |
0 |
13 |
228 |
117 |
69 |
62 |
49 |
0 |
| VODI |
0 |
0 |
147 |
125 |
112 |
116 |
92 |
0 |
| ODI |
0 |
0 |
64 |
88 |
94 |
90 |
167 |
0 |
| CDI |
0 |
0 |
41 |
76 |
53 |
221 |
430 |
39 |
| VCDI |
0 |
0 |
70 |
147 |
91 |
373 |
7710 |
6213 |
|
...date precedes bulletin
|
Date: 2022-01-04:
| 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 |
13332 |
5700 |
950 |
432 |
241 |
167 |
80 |
0 |
| OW |
0 |
20 |
180 |
98 |
101 |
90 |
38 |
0 |
| VODI |
0 |
5 |
108 |
120 |
117 |
143 |
42 |
0 |
| ODI |
0 |
0 |
45 |
83 |
126 |
222 |
47 |
0 |
| CDI |
0 |
0 |
19 |
68 |
110 |
342 |
233 |
22 |
| VCDI |
0 |
0 |
16 |
97 |
198 |
861 |
7476 |
6230 |
|
...date precedes bulletin
|
Date: 2022-01-06:
| 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 |
13111 |
5719 |
887 |
361 |
232 |
164 |
77 |
5 |
| OW |
0 |
33 |
158 |
98 |
77 |
127 |
65 |
0 |
| VODI |
0 |
8 |
118 |
114 |
103 |
152 |
88 |
0 |
| ODI |
0 |
0 |
37 |
77 |
63 |
162 |
134 |
0 |
| CDI |
0 |
0 |
14 |
59 |
69 |
229 |
421 |
6 |
| VCDI |
0 |
0 |
2 |
56 |
150 |
601 |
7572 |
6810 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13111 |
5719 |
902 |
358 |
239 |
184 |
91 |
5 |
| OW |
0 |
28 |
141 |
93 |
67 |
109 |
52 |
0 |
| VODI |
0 |
13 |
114 |
112 |
95 |
142 |
82 |
0 |
| ODI |
0 |
0 |
38 |
82 |
69 |
154 |
133 |
0 |
| CDI |
0 |
0 |
16 |
59 |
68 |
227 |
412 |
7 |
| VCDI |
0 |
0 |
5 |
61 |
156 |
619 |
7587 |
6809 |
|
Date: 2022-01-10:
| 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 |
13244 |
5952 |
915 |
375 |
142 |
58 |
31 |
0 |
| OW |
0 |
26 |
137 |
159 |
97 |
45 |
26 |
0 |
| VODI |
0 |
11 |
104 |
156 |
150 |
75 |
40 |
0 |
| ODI |
0 |
3 |
36 |
137 |
178 |
114 |
88 |
0 |
| CDI |
0 |
0 |
21 |
78 |
162 |
257 |
328 |
6 |
| VCDI |
0 |
0 |
3 |
35 |
100 |
634 |
6622 |
7614 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13244 |
5893 |
754 |
333 |
149 |
70 |
58 |
0 |
| OW |
0 |
63 |
151 |
112 |
79 |
50 |
25 |
0 |
| VODI |
0 |
27 |
130 |
123 |
113 |
77 |
62 |
0 |
| ODI |
0 |
7 |
99 |
127 |
117 |
97 |
111 |
0 |
| CDI |
0 |
2 |
67 |
158 |
198 |
178 |
283 |
17 |
| VCDI |
0 |
0 |
15 |
87 |
173 |
711 |
6596 |
7603 |
|
Date: 2022-01-12:
| 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 |
13573 |
5849 |
922 |
335 |
89 |
29 |
28 |
0 |
| OW |
0 |
56 |
185 |
153 |
56 |
34 |
14 |
0 |
| VODI |
0 |
14 |
143 |
162 |
115 |
100 |
31 |
0 |
| ODI |
0 |
0 |
71 |
134 |
147 |
171 |
96 |
0 |
| CDI |
0 |
0 |
29 |
75 |
131 |
256 |
434 |
18 |
| VCDI |
0 |
0 |
12 |
57 |
154 |
496 |
7779 |
6211 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13573 |
5781 |
839 |
289 |
85 |
43 |
51 |
0 |
| OW |
0 |
76 |
163 |
142 |
46 |
40 |
15 |
0 |
| VODI |
0 |
43 |
132 |
141 |
113 |
79 |
40 |
0 |
| ODI |
0 |
17 |
93 |
87 |
106 |
146 |
140 |
17 |
| CDI |
0 |
2 |
94 |
122 |
110 |
241 |
297 |
41 |
| VCDI |
0 |
0 |
41 |
135 |
232 |
537 |
7839 |
6171 |
|
Date: 2022-01-14:
| 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 |
12306 |
5494 |
2225 |
533 |
50 |
21 |
28 |
0 |
| OW |
0 |
0 |
153 |
274 |
58 |
28 |
22 |
0 |
| VODI |
0 |
0 |
96 |
327 |
136 |
115 |
39 |
0 |
| ODI |
0 |
0 |
22 |
219 |
168 |
139 |
131 |
11 |
| CDI |
0 |
0 |
8 |
153 |
127 |
179 |
501 |
92 |
| VCDI |
0 |
0 |
7 |
179 |
205 |
384 |
7610 |
6119 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12306 |
5492 |
2079 |
525 |
65 |
35 |
59 |
0 |
| OW |
0 |
2 |
198 |
170 |
41 |
26 |
26 |
0 |
| VODI |
0 |
0 |
142 |
241 |
100 |
91 |
46 |
0 |
| ODI |
0 |
0 |
50 |
207 |
112 |
136 |
121 |
0 |
| CDI |
0 |
0 |
10 |
217 |
129 |
157 |
315 |
4 |
| VCDI |
0 |
0 |
32 |
325 |
297 |
421 |
7764 |
6218 |
|
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