Validation of sea ice concentration
Bulletin date: 2020-02-20
Model vs. observations, sea ice class contingency tables
Date: 2020-02-14:
| 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 |
13499 |
5898 |
887 |
416 |
116 |
27 |
14 |
0 |
| OW |
0 |
87 |
236 |
234 |
87 |
35 |
11 |
0 |
| VODI |
0 |
32 |
172 |
292 |
140 |
81 |
47 |
0 |
| ODI |
0 |
8 |
88 |
197 |
115 |
118 |
131 |
6 |
| CDI |
0 |
1 |
55 |
156 |
196 |
187 |
497 |
20 |
| VCDI |
0 |
0 |
31 |
229 |
181 |
605 |
8063 |
4964 |
|
...date precedes bulletin
|
Date: 2020-02-18:
| 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 |
13690 |
5819 |
895 |
405 |
167 |
68 |
44 |
0 |
| OW |
0 |
78 |
278 |
191 |
94 |
67 |
14 |
0 |
| VODI |
0 |
0 |
197 |
255 |
209 |
197 |
52 |
9 |
| ODI |
0 |
0 |
72 |
180 |
151 |
150 |
131 |
101 |
| CDI |
0 |
0 |
54 |
112 |
120 |
191 |
437 |
181 |
| VCDI |
0 |
0 |
5 |
72 |
114 |
347 |
6302 |
6710 |
|
...date precedes bulletin
|
Date: 2020-02-20:
| 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 |
13503 |
5768 |
840 |
296 |
196 |
84 |
19 |
0 |
| OW |
0 |
79 |
342 |
181 |
92 |
47 |
12 |
0 |
| VODI |
0 |
26 |
274 |
230 |
175 |
129 |
26 |
3 |
| ODI |
0 |
0 |
97 |
188 |
198 |
157 |
74 |
79 |
| CDI |
0 |
0 |
82 |
188 |
213 |
286 |
398 |
135 |
| VCDI |
0 |
0 |
99 |
147 |
199 |
473 |
7569 |
5255 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13503 |
5771 |
893 |
318 |
210 |
85 |
21 |
0 |
| OW |
0 |
77 |
294 |
167 |
66 |
56 |
10 |
0 |
| VODI |
0 |
25 |
256 |
227 |
192 |
108 |
26 |
1 |
| ODI |
0 |
0 |
92 |
169 |
187 |
168 |
77 |
68 |
| CDI |
0 |
0 |
84 |
192 |
211 |
282 |
399 |
121 |
| VCDI |
0 |
0 |
115 |
157 |
207 |
477 |
7565 |
5282 |
|
Date: 2020-02-24:
| 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 |
13397 |
6074 |
691 |
558 |
155 |
41 |
11 |
0 |
| OW |
0 |
92 |
437 |
281 |
114 |
38 |
13 |
0 |
| VODI |
0 |
52 |
331 |
390 |
144 |
60 |
62 |
0 |
| ODI |
0 |
17 |
91 |
231 |
146 |
104 |
146 |
0 |
| CDI |
0 |
25 |
70 |
185 |
184 |
211 |
488 |
0 |
| VCDI |
0 |
5 |
19 |
74 |
132 |
561 |
8294 |
4235 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13397 |
5887 |
685 |
492 |
188 |
55 |
19 |
0 |
| OW |
0 |
199 |
292 |
177 |
54 |
28 |
15 |
0 |
| VODI |
0 |
98 |
386 |
310 |
119 |
61 |
57 |
0 |
| ODI |
0 |
31 |
113 |
240 |
103 |
82 |
123 |
0 |
| CDI |
0 |
17 |
60 |
196 |
156 |
154 |
388 |
0 |
| VCDI |
0 |
33 |
103 |
304 |
255 |
635 |
8412 |
4235 |
|
Date: 2020-02-26:
| 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 |
13271 |
5940 |
724 |
711 |
57 |
67 |
23 |
0 |
| OW |
0 |
47 |
413 |
319 |
85 |
44 |
28 |
0 |
| VODI |
0 |
26 |
287 |
430 |
91 |
64 |
76 |
0 |
| ODI |
0 |
19 |
50 |
292 |
107 |
81 |
132 |
0 |
| CDI |
0 |
7 |
24 |
328 |
137 |
148 |
461 |
5 |
| VCDI |
0 |
8 |
18 |
151 |
129 |
427 |
8504 |
4428 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13271 |
5849 |
634 |
594 |
53 |
73 |
29 |
0 |
| OW |
0 |
113 |
294 |
251 |
36 |
37 |
30 |
0 |
| VODI |
0 |
50 |
413 |
396 |
107 |
62 |
68 |
0 |
| ODI |
0 |
16 |
110 |
340 |
83 |
67 |
138 |
0 |
| CDI |
0 |
6 |
32 |
281 |
160 |
124 |
423 |
11 |
| VCDI |
0 |
13 |
33 |
369 |
167 |
468 |
8536 |
4422 |
|
Date: 2020-02-28:
| 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 |
12857 |
5767 |
997 |
507 |
260 |
168 |
33 |
0 |
| OW |
0 |
25 |
124 |
205 |
175 |
82 |
33 |
0 |
| VODI |
0 |
6 |
159 |
438 |
280 |
218 |
99 |
0 |
| ODI |
0 |
1 |
33 |
98 |
196 |
196 |
172 |
0 |
| CDI |
0 |
0 |
21 |
74 |
141 |
258 |
427 |
0 |
| VCDI |
0 |
0 |
2 |
44 |
168 |
484 |
8382 |
5029 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12857 |
5731 |
884 |
445 |
239 |
183 |
51 |
0 |
| OW |
0 |
58 |
207 |
198 |
123 |
72 |
52 |
0 |
| VODI |
0 |
10 |
159 |
371 |
256 |
146 |
78 |
0 |
| ODI |
0 |
0 |
65 |
196 |
219 |
207 |
174 |
0 |
| CDI |
0 |
0 |
17 |
92 |
172 |
219 |
472 |
3 |
| VCDI |
0 |
0 |
4 |
64 |
211 |
579 |
8319 |
5026 |
|
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