Validation of sea ice concentration
Bulletin date: 2020-07-09
Model vs. observations, sea ice class contingency tables
Date: 2020-07-03:
| 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 |
17556 |
6688 |
2375 |
952 |
443 |
211 |
143 |
9 |
| OW |
0 |
2 |
68 |
212 |
249 |
166 |
117 |
0 |
| VODI |
0 |
0 |
20 |
169 |
225 |
361 |
299 |
2 |
| ODI |
0 |
0 |
4 |
55 |
128 |
479 |
507 |
1 |
| CDI |
0 |
0 |
0 |
23 |
69 |
185 |
1951 |
431 |
| VCDI |
0 |
0 |
0 |
1 |
5 |
3 |
365 |
3685 |
|
...date precedes bulletin
|
Date: 2020-07-07:
| 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 |
18057 |
6805 |
2618 |
989 |
495 |
193 |
87 |
0 |
| OW |
0 |
0 |
31 |
213 |
198 |
119 |
94 |
0 |
| VODI |
0 |
0 |
9 |
92 |
201 |
298 |
230 |
0 |
| ODI |
0 |
0 |
1 |
46 |
75 |
514 |
997 |
2 |
| CDI |
0 |
0 |
1 |
15 |
45 |
46 |
1545 |
1422 |
| VCDI |
0 |
0 |
0 |
10 |
11 |
14 |
519 |
2167 |
|
...date precedes bulletin
|
Date: 2020-07-09:
| 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 |
19167 |
6847 |
1905 |
910 |
461 |
202 |
103 |
0 |
| OW |
0 |
0 |
50 |
199 |
211 |
117 |
122 |
0 |
| VODI |
0 |
0 |
14 |
100 |
159 |
246 |
397 |
0 |
| ODI |
0 |
0 |
2 |
58 |
52 |
236 |
1528 |
43 |
| CDI |
0 |
0 |
3 |
50 |
35 |
45 |
927 |
1488 |
| VCDI |
0 |
0 |
2 |
9 |
5 |
11 |
484 |
1971 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
19167 |
6847 |
1907 |
928 |
501 |
212 |
113 |
0 |
| OW |
0 |
0 |
45 |
176 |
187 |
119 |
97 |
0 |
| VODI |
0 |
0 |
17 |
103 |
143 |
217 |
414 |
0 |
| ODI |
0 |
0 |
4 |
56 |
55 |
259 |
1517 |
44 |
| CDI |
0 |
0 |
1 |
55 |
31 |
40 |
926 |
1429 |
| VCDI |
0 |
0 |
2 |
8 |
6 |
10 |
494 |
2029 |
|
Date: 2020-07-13:
| 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 |
20046 |
6092 |
2238 |
959 |
397 |
165 |
44 |
0 |
| OW |
0 |
0 |
99 |
166 |
104 |
115 |
51 |
0 |
| VODI |
0 |
0 |
48 |
167 |
166 |
181 |
90 |
20 |
| ODI |
0 |
0 |
4 |
66 |
119 |
404 |
512 |
43 |
| CDI |
0 |
0 |
0 |
41 |
25 |
118 |
2072 |
2220 |
| VCDI |
0 |
0 |
0 |
13 |
4 |
20 |
342 |
1008 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20046 |
6091 |
2276 |
1019 |
463 |
296 |
60 |
0 |
| OW |
0 |
1 |
77 |
182 |
138 |
169 |
88 |
0 |
| VODI |
0 |
0 |
31 |
124 |
158 |
313 |
923 |
21 |
| ODI |
0 |
0 |
5 |
27 |
32 |
146 |
1067 |
327 |
| CDI |
0 |
0 |
0 |
45 |
19 |
39 |
593 |
1586 |
| VCDI |
0 |
0 |
0 |
15 |
5 |
40 |
380 |
1357 |
|
Date: 2020-07-15:
| 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 |
20163 |
6146 |
2198 |
877 |
478 |
185 |
46 |
0 |
| OW |
0 |
0 |
57 |
191 |
149 |
105 |
85 |
0 |
| VODI |
0 |
0 |
14 |
154 |
169 |
227 |
209 |
0 |
| ODI |
0 |
0 |
0 |
65 |
68 |
310 |
652 |
1 |
| CDI |
0 |
0 |
0 |
46 |
51 |
86 |
2791 |
1917 |
| VCDI |
0 |
0 |
0 |
6 |
7 |
3 |
247 |
456 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20163 |
6146 |
2201 |
922 |
529 |
304 |
111 |
0 |
| OW |
0 |
0 |
57 |
187 |
159 |
130 |
270 |
0 |
| VODI |
0 |
0 |
11 |
111 |
132 |
289 |
1186 |
56 |
| ODI |
0 |
0 |
0 |
44 |
37 |
114 |
754 |
413 |
| CDI |
0 |
0 |
0 |
68 |
55 |
76 |
1311 |
1279 |
| VCDI |
0 |
0 |
0 |
7 |
10 |
3 |
398 |
626 |
|
Date: 2020-07-17:
| 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 |
20101 |
6273 |
2313 |
809 |
467 |
178 |
44 |
0 |
| OW |
0 |
0 |
82 |
163 |
143 |
133 |
97 |
0 |
| VODI |
0 |
0 |
19 |
124 |
173 |
236 |
271 |
0 |
| ODI |
0 |
0 |
0 |
53 |
66 |
233 |
833 |
0 |
| CDI |
0 |
0 |
1 |
67 |
73 |
318 |
2530 |
1907 |
| VCDI |
0 |
0 |
0 |
9 |
4 |
9 |
150 |
280 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20101 |
6272 |
2309 |
866 |
528 |
330 |
141 |
0 |
| OW |
0 |
1 |
88 |
160 |
157 |
110 |
379 |
0 |
| VODI |
0 |
0 |
17 |
72 |
124 |
261 |
1221 |
184 |
| ODI |
0 |
0 |
0 |
41 |
43 |
90 |
591 |
407 |
| CDI |
0 |
0 |
0 |
77 |
68 |
302 |
1184 |
1188 |
| VCDI |
0 |
0 |
1 |
9 |
6 |
14 |
409 |
408 |
|
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