Validation of sea ice concentration
Bulletin date: 2022-01-20
Model vs. observations, sea ice class contingency tables
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 |
|
...date precedes bulletin
|
Date: 2022-01-18:
| 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 |
13204 |
5922 |
647 |
443 |
117 |
26 |
6 |
0 |
| OW |
0 |
110 |
131 |
178 |
99 |
35 |
29 |
0 |
| VODI |
0 |
67 |
146 |
171 |
129 |
83 |
28 |
0 |
| ODI |
0 |
17 |
70 |
156 |
138 |
173 |
100 |
4 |
| CDI |
0 |
12 |
32 |
107 |
116 |
251 |
344 |
57 |
| VCDI |
0 |
46 |
49 |
235 |
192 |
656 |
8553 |
5280 |
|
...date precedes bulletin
|
Date: 2022-01-20:
| 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 |
12974 |
5969 |
849 |
303 |
114 |
44 |
3 |
0 |
| OW |
0 |
58 |
196 |
151 |
93 |
73 |
18 |
0 |
| VODI |
0 |
18 |
144 |
202 |
166 |
123 |
54 |
0 |
| ODI |
0 |
6 |
59 |
128 |
165 |
213 |
89 |
0 |
| CDI |
0 |
2 |
34 |
68 |
166 |
260 |
396 |
11 |
| VCDI |
0 |
28 |
75 |
84 |
289 |
672 |
8747 |
5115 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12974 |
5978 |
885 |
339 |
131 |
65 |
7 |
0 |
| OW |
0 |
49 |
164 |
128 |
86 |
64 |
15 |
0 |
| VODI |
0 |
16 |
139 |
182 |
159 |
119 |
61 |
0 |
| ODI |
0 |
7 |
56 |
132 |
162 |
183 |
91 |
0 |
| CDI |
0 |
3 |
32 |
66 |
161 |
259 |
350 |
10 |
| VCDI |
0 |
28 |
81 |
89 |
294 |
695 |
8783 |
5116 |
|
Date: 2022-01-24:
| 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 |
12888 |
6063 |
1250 |
314 |
106 |
18 |
0 |
0 |
| OW |
0 |
21 |
214 |
185 |
133 |
40 |
2 |
0 |
| VODI |
0 |
0 |
184 |
200 |
225 |
137 |
45 |
0 |
| ODI |
0 |
0 |
92 |
201 |
197 |
246 |
117 |
15 |
| CDI |
0 |
0 |
59 |
172 |
156 |
253 |
586 |
64 |
| VCDI |
0 |
0 |
92 |
210 |
184 |
801 |
8117 |
4572 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12888 |
6026 |
1059 |
207 |
99 |
32 |
0 |
0 |
| OW |
0 |
36 |
250 |
130 |
105 |
79 |
5 |
0 |
| VODI |
0 |
19 |
207 |
223 |
206 |
145 |
64 |
0 |
| ODI |
0 |
3 |
104 |
191 |
145 |
209 |
145 |
12 |
| CDI |
0 |
0 |
89 |
162 |
138 |
168 |
543 |
63 |
| VCDI |
0 |
0 |
182 |
369 |
308 |
862 |
8110 |
4576 |
|
Date: 2022-01-26:
| 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 |
12744 |
5932 |
1348 |
426 |
66 |
14 |
2 |
0 |
| OW |
0 |
100 |
199 |
222 |
84 |
24 |
8 |
0 |
| VODI |
0 |
98 |
188 |
334 |
162 |
76 |
51 |
0 |
| ODI |
0 |
35 |
91 |
293 |
132 |
152 |
135 |
4 |
| CDI |
0 |
15 |
82 |
265 |
160 |
169 |
540 |
7 |
| VCDI |
0 |
13 |
212 |
551 |
489 |
874 |
8219 |
3643 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12744 |
5917 |
1199 |
300 |
48 |
23 |
3 |
0 |
| OW |
0 |
95 |
230 |
188 |
49 |
44 |
7 |
0 |
| VODI |
0 |
67 |
244 |
354 |
183 |
88 |
75 |
0 |
| ODI |
0 |
29 |
103 |
264 |
144 |
145 |
172 |
4 |
| CDI |
0 |
26 |
64 |
301 |
156 |
153 |
435 |
8 |
| VCDI |
0 |
59 |
280 |
684 |
513 |
856 |
8263 |
3642 |
|
Date: 2022-01-28:
| 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 |
12591 |
5972 |
1123 |
435 |
140 |
39 |
4 |
0 |
| OW |
0 |
53 |
123 |
199 |
110 |
65 |
7 |
0 |
| VODI |
0 |
54 |
104 |
245 |
225 |
213 |
32 |
0 |
| ODI |
0 |
48 |
43 |
207 |
168 |
280 |
143 |
4 |
| CDI |
0 |
33 |
35 |
194 |
204 |
322 |
458 |
6 |
| VCDI |
0 |
49 |
236 |
572 |
533 |
1077 |
8728 |
3085 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12591 |
5951 |
964 |
337 |
126 |
48 |
5 |
0 |
| OW |
0 |
69 |
181 |
155 |
98 |
62 |
5 |
0 |
| VODI |
0 |
48 |
160 |
292 |
241 |
244 |
52 |
0 |
| ODI |
0 |
38 |
68 |
201 |
153 |
288 |
174 |
4 |
| CDI |
0 |
24 |
39 |
173 |
157 |
293 |
399 |
7 |
| VCDI |
0 |
79 |
252 |
694 |
605 |
1061 |
8737 |
3084 |
|
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