Validation of sea ice concentration
Bulletin date: 2022-12-22
Model vs. observations, sea ice class contingency tables
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 |
|
...date precedes bulletin
|
Date: 2022-12-20:
| 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 |
14762 |
7124 |
1042 |
494 |
169 |
68 |
97 |
1 |
| OW |
0 |
24 |
216 |
162 |
120 |
70 |
68 |
0 |
| VODI |
0 |
8 |
128 |
130 |
175 |
152 |
89 |
0 |
| ODI |
0 |
2 |
51 |
82 |
105 |
203 |
123 |
0 |
| CDI |
0 |
0 |
35 |
43 |
91 |
217 |
354 |
0 |
| VCDI |
0 |
0 |
40 |
80 |
123 |
326 |
7059 |
4126 |
|
...date precedes bulletin
|
Date: 2022-12-22:
| 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 |
14996 |
6977 |
820 |
354 |
91 |
63 |
88 |
0 |
| OW |
0 |
63 |
227 |
192 |
89 |
61 |
38 |
0 |
| VODI |
0 |
12 |
154 |
204 |
142 |
90 |
64 |
0 |
| ODI |
0 |
1 |
53 |
136 |
145 |
147 |
57 |
0 |
| CDI |
0 |
0 |
24 |
75 |
113 |
256 |
213 |
15 |
| VCDI |
0 |
0 |
23 |
121 |
220 |
728 |
7236 |
3871 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14996 |
6988 |
835 |
345 |
96 |
75 |
89 |
0 |
| OW |
0 |
49 |
224 |
209 |
87 |
55 |
42 |
0 |
| VODI |
0 |
15 |
147 |
220 |
169 |
103 |
66 |
0 |
| ODI |
0 |
1 |
48 |
120 |
123 |
158 |
55 |
0 |
| CDI |
0 |
0 |
25 |
65 |
104 |
228 |
218 |
17 |
| VCDI |
0 |
0 |
22 |
123 |
221 |
726 |
7226 |
3869 |
|
Date: 2022-12-26:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2022-12-28:
| 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 |
14210 |
6224 |
1464 |
504 |
141 |
38 |
50 |
0 |
| OW |
0 |
31 |
207 |
221 |
114 |
62 |
40 |
2 |
| VODI |
0 |
1 |
108 |
171 |
186 |
109 |
82 |
1 |
| ODI |
0 |
0 |
48 |
80 |
136 |
157 |
114 |
1 |
| CDI |
0 |
0 |
21 |
58 |
105 |
251 |
349 |
0 |
| VCDI |
0 |
0 |
11 |
67 |
213 |
474 |
7356 |
4752 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14208 |
6146 |
1320 |
467 |
128 |
52 |
121 |
1 |
| OW |
2 |
77 |
226 |
164 |
99 |
59 |
66 |
1 |
| VODI |
0 |
21 |
164 |
187 |
129 |
87 |
115 |
2 |
| ODI |
0 |
8 |
71 |
100 |
131 |
125 |
116 |
0 |
| CDI |
0 |
3 |
31 |
85 |
141 |
216 |
335 |
1 |
| VCDI |
0 |
1 |
47 |
98 |
267 |
552 |
7238 |
4751 |
|
Date: 2022-12-30:
| 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 |
14364 |
6309 |
1143 |
387 |
151 |
42 |
55 |
0 |
| OW |
0 |
219 |
261 |
146 |
87 |
55 |
38 |
0 |
| VODI |
0 |
33 |
227 |
207 |
150 |
100 |
100 |
0 |
| ODI |
0 |
3 |
124 |
119 |
130 |
121 |
114 |
6 |
| CDI |
0 |
0 |
77 |
119 |
99 |
178 |
351 |
59 |
| VCDI |
0 |
0 |
58 |
274 |
194 |
790 |
6537 |
4732 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14363 |
6101 |
1045 |
398 |
176 |
66 |
139 |
0 |
| OW |
1 |
203 |
181 |
104 |
77 |
74 |
73 |
0 |
| VODI |
0 |
175 |
162 |
126 |
102 |
117 |
121 |
0 |
| ODI |
0 |
60 |
155 |
90 |
68 |
111 |
123 |
16 |
| CDI |
0 |
18 |
126 |
94 |
77 |
91 |
307 |
61 |
| VCDI |
0 |
7 |
221 |
440 |
311 |
827 |
6432 |
4720 |
|
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