Validation of sea ice concentration
Bulletin date: 2018-04-19
Model vs. observations, sea ice class contingency tables
Date: 2018-04-13:
| 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 |
13420 |
5740 |
1098 |
427 |
179 |
86 |
55 |
0 |
| OW |
0 |
3 |
132 |
166 |
128 |
94 |
68 |
0 |
| VODI |
0 |
0 |
56 |
136 |
167 |
192 |
118 |
0 |
| ODI |
0 |
0 |
12 |
86 |
122 |
244 |
210 |
6 |
| CDI |
0 |
0 |
2 |
43 |
100 |
377 |
742 |
44 |
| VCDI |
0 |
0 |
1 |
12 |
60 |
312 |
8010 |
5511 |
|
...date precedes bulletin
|
Date: 2018-04-17:
| 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 |
13816 |
5658 |
978 |
468 |
146 |
51 |
17 |
0 |
| OW |
0 |
29 |
193 |
245 |
116 |
91 |
64 |
0 |
| VODI |
0 |
0 |
65 |
155 |
181 |
153 |
159 |
0 |
| ODI |
0 |
0 |
13 |
50 |
128 |
176 |
308 |
0 |
| CDI |
0 |
0 |
3 |
28 |
78 |
400 |
826 |
2 |
| VCDI |
0 |
0 |
2 |
9 |
34 |
402 |
7934 |
5181 |
|
...date precedes bulletin
|
Date: 2018-04-19:
| 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 |
13663 |
5616 |
1126 |
375 |
272 |
118 |
23 |
0 |
| OW |
0 |
88 |
180 |
142 |
128 |
150 |
44 |
0 |
| VODI |
0 |
30 |
135 |
80 |
109 |
232 |
148 |
0 |
| ODI |
0 |
8 |
44 |
53 |
94 |
218 |
210 |
19 |
| CDI |
0 |
2 |
13 |
33 |
68 |
248 |
475 |
86 |
| VCDI |
0 |
0 |
3 |
12 |
30 |
483 |
7849 |
5552 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13663 |
5621 |
1130 |
394 |
283 |
134 |
26 |
0 |
| OW |
0 |
81 |
150 |
118 |
101 |
140 |
40 |
0 |
| VODI |
0 |
27 |
152 |
81 |
120 |
213 |
120 |
0 |
| ODI |
0 |
14 |
58 |
57 |
101 |
215 |
204 |
15 |
| CDI |
0 |
1 |
9 |
33 |
64 |
244 |
456 |
83 |
| VCDI |
0 |
0 |
2 |
12 |
32 |
503 |
7903 |
5559 |
|
Date: 2018-04-23:
| 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 |
13694 |
5715 |
1053 |
634 |
218 |
89 |
15 |
0 |
| OW |
0 |
5 |
159 |
148 |
126 |
105 |
37 |
0 |
| VODI |
0 |
0 |
52 |
119 |
152 |
169 |
111 |
0 |
| ODI |
0 |
0 |
1 |
40 |
95 |
260 |
207 |
0 |
| CDI |
0 |
0 |
1 |
4 |
63 |
370 |
700 |
18 |
| VCDI |
0 |
0 |
1 |
6 |
11 |
453 |
6821 |
6507 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13694 |
5582 |
968 |
651 |
280 |
149 |
37 |
0 |
| OW |
0 |
83 |
115 |
120 |
118 |
127 |
69 |
0 |
| VODI |
0 |
55 |
116 |
99 |
105 |
195 |
141 |
0 |
| ODI |
0 |
0 |
61 |
52 |
86 |
215 |
198 |
0 |
| CDI |
0 |
0 |
6 |
22 |
66 |
325 |
668 |
18 |
| VCDI |
0 |
0 |
1 |
7 |
10 |
435 |
6778 |
6507 |
|
Date: 2018-04-25:
| 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 |
13847 |
5850 |
934 |
417 |
269 |
97 |
70 |
0 |
| OW |
0 |
0 |
135 |
123 |
103 |
107 |
79 |
0 |
| VODI |
0 |
0 |
45 |
110 |
103 |
184 |
188 |
0 |
| ODI |
0 |
0 |
10 |
39 |
80 |
180 |
280 |
0 |
| CDI |
0 |
0 |
0 |
19 |
65 |
157 |
707 |
33 |
| VCDI |
0 |
0 |
0 |
6 |
14 |
226 |
6092 |
7590 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13847 |
5699 |
830 |
447 |
343 |
186 |
142 |
0 |
| OW |
0 |
82 |
118 |
98 |
81 |
136 |
97 |
0 |
| VODI |
0 |
67 |
92 |
78 |
63 |
157 |
221 |
0 |
| ODI |
0 |
2 |
61 |
49 |
69 |
147 |
260 |
1 |
| CDI |
0 |
0 |
23 |
33 |
45 |
147 |
583 |
73 |
| VCDI |
0 |
0 |
0 |
9 |
33 |
178 |
6113 |
7549 |
|
Date: 2018-04-27:
| 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 |
14051 |
5838 |
659 |
487 |
209 |
120 |
85 |
0 |
| OW |
0 |
22 |
112 |
146 |
90 |
103 |
99 |
0 |
| VODI |
0 |
2 |
45 |
125 |
110 |
163 |
241 |
0 |
| ODI |
0 |
0 |
7 |
31 |
81 |
128 |
304 |
0 |
| CDI |
0 |
0 |
3 |
20 |
53 |
157 |
731 |
71 |
| VCDI |
0 |
0 |
1 |
14 |
22 |
185 |
6368 |
7276 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14051 |
5716 |
660 |
534 |
278 |
232 |
173 |
0 |
| OW |
0 |
78 |
66 |
94 |
72 |
114 |
167 |
0 |
| VODI |
0 |
43 |
56 |
95 |
83 |
126 |
256 |
0 |
| ODI |
0 |
22 |
31 |
59 |
66 |
89 |
321 |
11 |
| CDI |
0 |
3 |
14 |
30 |
44 |
135 |
864 |
93 |
| VCDI |
0 |
0 |
0 |
11 |
22 |
160 |
6047 |
7243 |
|
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