Validation of sea ice concentration
Bulletin date: 2020-06-18
Model vs. observations, sea ice class contingency tables
Date: 2020-06-12:
| 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 |
15367 |
6666 |
2032 |
1196 |
546 |
291 |
116 |
12 |
| OW |
0 |
2 |
55 |
238 |
341 |
246 |
117 |
0 |
| VODI |
0 |
3 |
21 |
107 |
267 |
494 |
524 |
2 |
| ODI |
0 |
0 |
14 |
35 |
53 |
249 |
919 |
1 |
| CDI |
0 |
0 |
2 |
32 |
48 |
125 |
1669 |
1 |
| VCDI |
0 |
0 |
0 |
3 |
5 |
24 |
1974 |
4362 |
|
...date precedes bulletin
|
Date: 2020-06-16:
| 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 |
15337 |
7013 |
1942 |
1214 |
634 |
245 |
185 |
12 |
| OW |
0 |
1 |
92 |
207 |
301 |
180 |
123 |
0 |
| VODI |
0 |
0 |
25 |
106 |
318 |
547 |
275 |
4 |
| ODI |
0 |
0 |
3 |
34 |
104 |
382 |
601 |
3 |
| CDI |
0 |
0 |
2 |
29 |
72 |
153 |
1653 |
3 |
| VCDI |
0 |
0 |
1 |
6 |
14 |
9 |
1963 |
4366 |
|
...date precedes bulletin
|
Date: 2020-06-18:
| 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 |
15206 |
6910 |
2154 |
1464 |
601 |
322 |
123 |
12 |
| OW |
0 |
4 |
88 |
198 |
343 |
234 |
167 |
0 |
| VODI |
0 |
0 |
15 |
75 |
245 |
517 |
433 |
3 |
| ODI |
0 |
0 |
4 |
44 |
59 |
284 |
525 |
4 |
| CDI |
0 |
0 |
0 |
24 |
71 |
114 |
1669 |
15 |
| VCDI |
0 |
0 |
0 |
5 |
9 |
8 |
1749 |
4461 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15206 |
6911 |
2156 |
1473 |
690 |
355 |
148 |
12 |
| OW |
0 |
3 |
86 |
174 |
266 |
209 |
151 |
0 |
| VODI |
0 |
0 |
14 |
92 |
237 |
551 |
402 |
4 |
| ODI |
0 |
0 |
5 |
39 |
57 |
240 |
611 |
5 |
| CDI |
0 |
0 |
0 |
28 |
72 |
119 |
1709 |
12 |
| VCDI |
0 |
0 |
0 |
4 |
6 |
5 |
1645 |
4462 |
|
Date: 2020-06-22:
| 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 |
15154 |
7112 |
2182 |
1729 |
601 |
243 |
154 |
12 |
| OW |
0 |
1 |
10 |
281 |
249 |
231 |
103 |
0 |
| VODI |
0 |
0 |
2 |
138 |
217 |
350 |
218 |
5 |
| ODI |
0 |
0 |
0 |
41 |
114 |
691 |
637 |
14 |
| CDI |
0 |
0 |
0 |
8 |
58 |
321 |
1357 |
68 |
| VCDI |
0 |
0 |
1 |
7 |
4 |
10 |
1775 |
4061 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15154 |
7108 |
2159 |
1839 |
783 |
443 |
236 |
12 |
| OW |
0 |
5 |
28 |
217 |
218 |
346 |
200 |
0 |
| VODI |
0 |
0 |
6 |
97 |
140 |
529 |
373 |
4 |
| ODI |
0 |
0 |
1 |
29 |
33 |
188 |
450 |
11 |
| CDI |
0 |
0 |
0 |
18 |
65 |
334 |
1489 |
103 |
| VCDI |
0 |
0 |
1 |
4 |
4 |
6 |
1496 |
4030 |
|
Date: 2020-06-24:
| 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 |
15885 |
6902 |
2015 |
1894 |
607 |
200 |
168 |
0 |
| OW |
0 |
0 |
14 |
271 |
235 |
211 |
111 |
0 |
| VODI |
0 |
0 |
4 |
120 |
222 |
437 |
333 |
0 |
| ODI |
0 |
0 |
0 |
34 |
63 |
411 |
603 |
1 |
| CDI |
0 |
0 |
0 |
31 |
42 |
198 |
1471 |
119 |
| VCDI |
0 |
0 |
3 |
6 |
3 |
6 |
1584 |
3955 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15885 |
6897 |
1985 |
2004 |
778 |
401 |
258 |
0 |
| OW |
0 |
3 |
38 |
201 |
197 |
346 |
192 |
0 |
| VODI |
0 |
2 |
9 |
75 |
104 |
328 |
415 |
0 |
| ODI |
0 |
0 |
1 |
37 |
41 |
169 |
467 |
4 |
| CDI |
0 |
0 |
0 |
33 |
49 |
215 |
1763 |
221 |
| VCDI |
0 |
0 |
3 |
6 |
3 |
4 |
1175 |
3850 |
|
Date: 2020-06-26:
| 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 |
16250 |
6883 |
2139 |
1666 |
608 |
211 |
158 |
0 |
| OW |
0 |
0 |
44 |
231 |
184 |
244 |
140 |
0 |
| VODI |
0 |
0 |
4 |
98 |
215 |
454 |
463 |
0 |
| ODI |
0 |
0 |
0 |
38 |
53 |
253 |
644 |
0 |
| CDI |
0 |
0 |
0 |
37 |
61 |
159 |
1432 |
95 |
| VCDI |
0 |
0 |
1 |
7 |
6 |
5 |
1419 |
3957 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16250 |
6878 |
2126 |
1744 |
746 |
510 |
322 |
0 |
| OW |
0 |
4 |
46 |
173 |
196 |
305 |
254 |
0 |
| VODI |
0 |
1 |
14 |
67 |
77 |
184 |
406 |
0 |
| ODI |
0 |
0 |
1 |
46 |
52 |
149 |
511 |
0 |
| CDI |
0 |
0 |
0 |
40 |
51 |
173 |
1998 |
534 |
| VCDI |
0 |
0 |
1 |
7 |
5 |
5 |
765 |
3518 |
|
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