Validation of sea ice concentration
Bulletin date: 2021-04-08
Model vs. observations, sea ice class contingency tables
Date: 2021-04-02:
| Best estimate |
Forecast |
|
...observations not yet available
|
...observations not yet available
|
Date: 2021-04-06:
| 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 |
12645 |
5874 |
838 |
742 |
133 |
44 |
6 |
0 |
| OW |
0 |
103 |
103 |
248 |
93 |
24 |
10 |
0 |
| VODI |
0 |
76 |
78 |
252 |
234 |
86 |
45 |
0 |
| ODI |
0 |
2 |
60 |
181 |
302 |
144 |
182 |
8 |
| CDI |
0 |
0 |
51 |
209 |
315 |
275 |
602 |
34 |
| VCDI |
0 |
0 |
44 |
237 |
586 |
1216 |
7994 |
4083 |
|
...date precedes bulletin
|
Date: 2021-04-08:
| 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 |
12421 |
6120 |
1140 |
442 |
279 |
66 |
14 |
0 |
| OW |
0 |
106 |
191 |
177 |
121 |
54 |
25 |
0 |
| VODI |
0 |
25 |
160 |
335 |
149 |
115 |
91 |
0 |
| ODI |
0 |
2 |
67 |
298 |
166 |
143 |
162 |
0 |
| CDI |
0 |
1 |
24 |
204 |
217 |
291 |
597 |
6 |
| VCDI |
0 |
2 |
51 |
376 |
635 |
777 |
8140 |
3969 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12421 |
6119 |
1148 |
456 |
292 |
77 |
18 |
0 |
| OW |
0 |
110 |
170 |
188 |
118 |
48 |
21 |
0 |
| VODI |
0 |
23 |
169 |
320 |
152 |
111 |
105 |
0 |
| ODI |
0 |
1 |
65 |
292 |
152 |
139 |
162 |
0 |
| CDI |
0 |
1 |
30 |
195 |
198 |
282 |
575 |
4 |
| VCDI |
0 |
2 |
51 |
381 |
655 |
789 |
8148 |
3971 |
|
Date: 2021-04-12:
| 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 |
12896 |
6261 |
1395 |
436 |
184 |
81 |
36 |
0 |
| OW |
0 |
26 |
337 |
276 |
133 |
73 |
38 |
0 |
| VODI |
0 |
3 |
439 |
298 |
192 |
168 |
128 |
0 |
| ODI |
0 |
0 |
245 |
192 |
208 |
212 |
184 |
1 |
| CDI |
0 |
0 |
126 |
133 |
209 |
331 |
1224 |
10 |
| VCDI |
0 |
0 |
337 |
311 |
206 |
378 |
6551 |
3901 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12896 |
6037 |
1392 |
448 |
228 |
108 |
69 |
0 |
| OW |
0 |
127 |
383 |
162 |
95 |
69 |
52 |
0 |
| VODI |
0 |
85 |
306 |
276 |
135 |
134 |
101 |
0 |
| ODI |
0 |
39 |
164 |
160 |
150 |
154 |
168 |
1 |
| CDI |
0 |
2 |
181 |
165 |
184 |
251 |
842 |
14 |
| VCDI |
0 |
0 |
453 |
435 |
340 |
527 |
6929 |
3897 |
|
Date: 2021-04-14:
| 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 |
12683 |
6124 |
1385 |
669 |
308 |
109 |
41 |
0 |
| OW |
0 |
24 |
224 |
208 |
149 |
87 |
48 |
0 |
| VODI |
0 |
2 |
244 |
255 |
221 |
184 |
111 |
0 |
| ODI |
0 |
0 |
149 |
200 |
173 |
172 |
195 |
0 |
| CDI |
0 |
0 |
77 |
141 |
164 |
217 |
1059 |
17 |
| VCDI |
0 |
0 |
85 |
236 |
296 |
704 |
7052 |
4146 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12683 |
6067 |
1178 |
451 |
195 |
131 |
89 |
0 |
| OW |
0 |
71 |
298 |
179 |
112 |
83 |
72 |
0 |
| VODI |
0 |
12 |
328 |
327 |
184 |
123 |
103 |
0 |
| ODI |
0 |
0 |
148 |
245 |
182 |
138 |
116 |
0 |
| CDI |
0 |
0 |
74 |
199 |
209 |
169 |
727 |
7 |
| VCDI |
0 |
0 |
138 |
308 |
429 |
829 |
7399 |
4156 |
|
Date: 2021-04-16:
| 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 |
12924 |
5940 |
1264 |
600 |
294 |
100 |
51 |
0 |
| OW |
0 |
33 |
202 |
209 |
153 |
80 |
34 |
0 |
| VODI |
0 |
3 |
156 |
233 |
216 |
142 |
77 |
0 |
| ODI |
0 |
0 |
46 |
252 |
194 |
168 |
134 |
0 |
| CDI |
0 |
0 |
22 |
219 |
211 |
226 |
619 |
2 |
| VCDI |
0 |
0 |
20 |
217 |
324 |
1019 |
7609 |
4166 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12924 |
5853 |
1110 |
456 |
197 |
92 |
64 |
0 |
| OW |
0 |
72 |
209 |
158 |
106 |
64 |
47 |
0 |
| VODI |
0 |
32 |
197 |
222 |
203 |
113 |
82 |
0 |
| ODI |
0 |
17 |
99 |
255 |
222 |
169 |
186 |
4 |
| CDI |
0 |
2 |
45 |
225 |
167 |
218 |
475 |
11 |
| VCDI |
0 |
0 |
50 |
414 |
497 |
1079 |
7670 |
4153 |
|
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