Validation of sea ice concentration
Bulletin date: 2022-12-08
Model vs. observations, sea ice class contingency tables
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 |
|
...date precedes bulletin
|
Date: 2022-12-06:
| 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 |
16841 |
7261 |
1037 |
423 |
281 |
262 |
148 |
0 |
| OW |
0 |
66 |
157 |
101 |
84 |
83 |
39 |
0 |
| VODI |
0 |
30 |
128 |
82 |
109 |
118 |
51 |
0 |
| ODI |
0 |
3 |
65 |
57 |
85 |
183 |
72 |
0 |
| CDI |
0 |
0 |
39 |
43 |
57 |
213 |
213 |
10 |
| VCDI |
0 |
0 |
24 |
55 |
100 |
235 |
4838 |
4566 |
|
...date precedes bulletin
|
Date: 2022-12-08:
| 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 |
17036 |
6992 |
628 |
525 |
193 |
220 |
114 |
0 |
| OW |
0 |
65 |
126 |
124 |
79 |
77 |
29 |
0 |
| VODI |
0 |
16 |
59 |
123 |
93 |
134 |
43 |
0 |
| ODI |
0 |
0 |
35 |
68 |
93 |
217 |
61 |
0 |
| CDI |
0 |
0 |
4 |
53 |
100 |
333 |
196 |
19 |
| VCDI |
0 |
0 |
0 |
7 |
53 |
555 |
5985 |
3704 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17036 |
6993 |
649 |
535 |
204 |
213 |
119 |
0 |
| OW |
0 |
54 |
113 |
129 |
73 |
86 |
32 |
0 |
| VODI |
0 |
26 |
49 |
105 |
102 |
138 |
43 |
0 |
| ODI |
0 |
0 |
36 |
61 |
79 |
197 |
57 |
0 |
| CDI |
0 |
0 |
5 |
58 |
99 |
355 |
203 |
17 |
| VCDI |
0 |
0 |
0 |
12 |
54 |
547 |
5974 |
3706 |
|
Date: 2022-12-12:
| 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 |
16230 |
6648 |
967 |
457 |
229 |
171 |
224 |
1 |
| OW |
0 |
37 |
103 |
207 |
105 |
79 |
43 |
0 |
| VODI |
0 |
3 |
42 |
163 |
211 |
196 |
93 |
0 |
| ODI |
0 |
0 |
7 |
78 |
96 |
231 |
144 |
0 |
| CDI |
0 |
0 |
0 |
19 |
61 |
342 |
290 |
30 |
| VCDI |
0 |
0 |
0 |
3 |
67 |
436 |
4857 |
5289 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16230 |
6578 |
914 |
462 |
246 |
217 |
289 |
1 |
| OW |
0 |
85 |
132 |
179 |
108 |
127 |
54 |
0 |
| VODI |
0 |
22 |
53 |
145 |
140 |
143 |
86 |
0 |
| ODI |
0 |
3 |
14 |
75 |
103 |
149 |
111 |
0 |
| CDI |
0 |
0 |
6 |
44 |
68 |
229 |
209 |
42 |
| VCDI |
0 |
0 |
0 |
22 |
104 |
590 |
4902 |
5277 |
|
Date: 2022-12-14:
| 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 |
15740 |
6970 |
779 |
560 |
159 |
142 |
169 |
0 |
| OW |
0 |
55 |
143 |
218 |
68 |
57 |
40 |
0 |
| VODI |
0 |
11 |
69 |
251 |
130 |
148 |
48 |
0 |
| ODI |
0 |
0 |
6 |
117 |
140 |
209 |
98 |
0 |
| CDI |
0 |
0 |
1 |
33 |
102 |
256 |
258 |
2 |
| VCDI |
0 |
0 |
0 |
38 |
185 |
729 |
5783 |
4445 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15740 |
6823 |
690 |
530 |
169 |
162 |
200 |
0 |
| OW |
0 |
153 |
169 |
218 |
70 |
65 |
39 |
0 |
| VODI |
0 |
50 |
113 |
211 |
131 |
136 |
68 |
0 |
| ODI |
0 |
9 |
24 |
119 |
94 |
191 |
90 |
0 |
| CDI |
0 |
1 |
2 |
59 |
84 |
219 |
215 |
4 |
| VCDI |
0 |
0 |
0 |
80 |
236 |
768 |
5784 |
4443 |
|
Date: 2022-12-16:
| 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 |
15209 |
7210 |
880 |
495 |
163 |
89 |
145 |
0 |
| OW |
0 |
103 |
178 |
166 |
88 |
61 |
67 |
0 |
| VODI |
0 |
25 |
123 |
166 |
106 |
137 |
105 |
0 |
| ODI |
0 |
4 |
33 |
77 |
93 |
158 |
109 |
0 |
| CDI |
0 |
0 |
11 |
52 |
58 |
134 |
377 |
8 |
| VCDI |
0 |
0 |
2 |
33 |
81 |
412 |
7041 |
3960 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15209 |
6942 |
751 |
432 |
159 |
110 |
208 |
0 |
| OW |
0 |
232 |
192 |
168 |
92 |
57 |
54 |
0 |
| VODI |
0 |
104 |
113 |
153 |
96 |
112 |
118 |
0 |
| ODI |
0 |
33 |
71 |
94 |
75 |
148 |
134 |
0 |
| CDI |
0 |
18 |
45 |
64 |
58 |
151 |
358 |
6 |
| VCDI |
0 |
13 |
55 |
78 |
109 |
413 |
6972 |
3962 |
|
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