Validation of sea ice concentration
Bulletin date: 2018-04-26
Model vs. observations, sea ice class contingency tables
Date: 2018-04-20:
| 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 |
13701 |
5549 |
1048 |
561 |
217 |
109 |
36 |
0 |
| OW |
0 |
77 |
145 |
178 |
131 |
110 |
54 |
0 |
| VODI |
0 |
28 |
117 |
116 |
137 |
194 |
173 |
0 |
| ODI |
0 |
0 |
39 |
77 |
123 |
184 |
190 |
21 |
| CDI |
0 |
0 |
2 |
46 |
87 |
264 |
494 |
84 |
| VCDI |
0 |
0 |
2 |
26 |
42 |
377 |
7562 |
5858 |
|
...date precedes bulletin
|
Date: 2018-04-24:
| 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 |
13675 |
5781 |
1037 |
616 |
230 |
98 |
49 |
0 |
| OW |
0 |
2 |
89 |
169 |
123 |
101 |
65 |
0 |
| VODI |
0 |
0 |
34 |
113 |
149 |
145 |
162 |
0 |
| ODI |
0 |
0 |
0 |
50 |
87 |
206 |
256 |
0 |
| CDI |
0 |
0 |
1 |
15 |
68 |
217 |
616 |
23 |
| VCDI |
0 |
0 |
0 |
12 |
21 |
335 |
6589 |
7025 |
|
...date precedes bulletin
|
Date: 2018-04-26:
| 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 |
13978 |
5832 |
795 |
491 |
210 |
114 |
71 |
0 |
| OW |
0 |
21 |
110 |
138 |
105 |
87 |
83 |
0 |
| VODI |
0 |
3 |
57 |
97 |
126 |
151 |
231 |
0 |
| ODI |
0 |
0 |
8 |
39 |
74 |
152 |
265 |
0 |
| CDI |
0 |
0 |
0 |
31 |
52 |
159 |
706 |
13 |
| VCDI |
0 |
0 |
0 |
5 |
21 |
224 |
6750 |
6960 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13978 |
5740 |
743 |
485 |
245 |
177 |
123 |
0 |
| OW |
0 |
72 |
107 |
117 |
87 |
96 |
132 |
0 |
| VODI |
0 |
40 |
71 |
102 |
96 |
137 |
223 |
0 |
| ODI |
0 |
4 |
38 |
53 |
83 |
109 |
235 |
0 |
| CDI |
0 |
0 |
10 |
36 |
53 |
151 |
617 |
12 |
| VCDI |
0 |
0 |
1 |
8 |
24 |
217 |
6776 |
6961 |
|
Date: 2018-04-30:
| 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 |
13809 |
5873 |
777 |
506 |
257 |
203 |
60 |
0 |
| OW |
0 |
8 |
76 |
125 |
137 |
131 |
104 |
0 |
| VODI |
0 |
0 |
24 |
84 |
142 |
219 |
160 |
0 |
| ODI |
0 |
0 |
0 |
28 |
70 |
197 |
243 |
0 |
| CDI |
0 |
0 |
4 |
20 |
68 |
229 |
598 |
28 |
| VCDI |
0 |
0 |
8 |
11 |
32 |
209 |
6340 |
7379 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13809 |
5812 |
696 |
518 |
337 |
325 |
189 |
0 |
| OW |
0 |
41 |
88 |
96 |
99 |
161 |
172 |
0 |
| VODI |
0 |
23 |
57 |
72 |
99 |
173 |
196 |
0 |
| ODI |
0 |
5 |
29 |
46 |
64 |
146 |
209 |
0 |
| CDI |
0 |
0 |
7 |
20 |
56 |
144 |
529 |
50 |
| VCDI |
0 |
0 |
12 |
22 |
51 |
239 |
6210 |
7357 |
|
Date: 2018-05-02:
| 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 |
13669 |
6131 |
790 |
528 |
339 |
233 |
141 |
0 |
| OW |
0 |
17 |
47 |
95 |
138 |
173 |
135 |
0 |
| VODI |
0 |
2 |
24 |
43 |
96 |
216 |
206 |
0 |
| ODI |
0 |
0 |
7 |
17 |
36 |
130 |
350 |
9 |
| CDI |
0 |
0 |
13 |
6 |
26 |
165 |
585 |
62 |
| VCDI |
0 |
0 |
32 |
25 |
14 |
424 |
5528 |
7707 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13669 |
6079 |
710 |
499 |
369 |
375 |
288 |
0 |
| OW |
0 |
30 |
90 |
69 |
91 |
125 |
201 |
0 |
| VODI |
0 |
33 |
30 |
68 |
88 |
133 |
208 |
0 |
| ODI |
0 |
8 |
24 |
30 |
50 |
136 |
254 |
16 |
| CDI |
0 |
0 |
22 |
22 |
28 |
135 |
623 |
52 |
| VCDI |
0 |
0 |
37 |
26 |
23 |
437 |
5371 |
7710 |
|
Date: 2018-05-04:
| 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 |
13670 |
6212 |
1221 |
571 |
238 |
162 |
137 |
0 |
| OW |
0 |
16 |
99 |
190 |
94 |
87 |
148 |
0 |
| VODI |
0 |
0 |
34 |
116 |
112 |
127 |
271 |
1 |
| ODI |
0 |
0 |
18 |
74 |
45 |
96 |
382 |
12 |
| CDI |
0 |
0 |
13 |
40 |
42 |
73 |
631 |
43 |
| VCDI |
0 |
0 |
30 |
40 |
41 |
138 |
7460 |
5475 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13670 |
6190 |
1109 |
544 |
271 |
230 |
342 |
0 |
| OW |
0 |
17 |
122 |
112 |
73 |
64 |
164 |
0 |
| VODI |
0 |
17 |
87 |
115 |
59 |
64 |
185 |
0 |
| ODI |
0 |
4 |
49 |
120 |
45 |
64 |
262 |
11 |
| CDI |
0 |
0 |
21 |
90 |
61 |
105 |
636 |
34 |
| VCDI |
0 |
0 |
27 |
50 |
63 |
156 |
7440 |
5486 |
|
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