Validation of sea ice concentration
Bulletin date: 2018-04-12
Model vs. observations, sea ice class contingency tables
Date: 2018-04-06:
| 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 |
13431 |
5827 |
865 |
367 |
198 |
204 |
17 |
0 |
| OW |
0 |
3 |
167 |
79 |
72 |
109 |
30 |
0 |
| VODI |
0 |
0 |
75 |
90 |
106 |
206 |
74 |
0 |
| ODI |
0 |
0 |
24 |
50 |
94 |
283 |
155 |
0 |
| CDI |
0 |
0 |
5 |
38 |
47 |
468 |
455 |
20 |
| VCDI |
0 |
0 |
0 |
6 |
40 |
348 |
6917 |
7289 |
|
...date precedes bulletin
|
Date: 2018-04-10:
| 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 |
13052 |
5700 |
1314 |
531 |
186 |
123 |
18 |
0 |
| OW |
0 |
0 |
77 |
175 |
125 |
109 |
36 |
0 |
| VODI |
0 |
0 |
27 |
136 |
191 |
224 |
84 |
0 |
| ODI |
0 |
0 |
7 |
60 |
125 |
291 |
239 |
12 |
| CDI |
0 |
0 |
0 |
37 |
68 |
425 |
808 |
75 |
| VCDI |
0 |
0 |
0 |
10 |
54 |
581 |
7811 |
5448 |
|
...date precedes bulletin
|
Date: 2018-04-12:
| 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 |
13116 |
5742 |
1251 |
506 |
208 |
113 |
52 |
0 |
| OW |
0 |
1 |
105 |
162 |
111 |
110 |
49 |
0 |
| VODI |
0 |
0 |
38 |
134 |
164 |
211 |
96 |
0 |
| ODI |
0 |
0 |
6 |
79 |
110 |
231 |
240 |
18 |
| CDI |
0 |
0 |
0 |
29 |
83 |
311 |
845 |
48 |
| VCDI |
0 |
0 |
0 |
10 |
66 |
448 |
8485 |
4981 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13116 |
5742 |
1261 |
521 |
220 |
115 |
46 |
0 |
| OW |
0 |
1 |
94 |
145 |
95 |
115 |
54 |
0 |
| VODI |
0 |
0 |
39 |
133 |
167 |
201 |
99 |
0 |
| ODI |
0 |
0 |
6 |
79 |
114 |
229 |
233 |
17 |
| CDI |
0 |
0 |
0 |
32 |
83 |
306 |
792 |
43 |
| VCDI |
0 |
0 |
0 |
10 |
63 |
458 |
8543 |
4987 |
|
Date: 2018-04-16:
| 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 |
13687 |
5676 |
886 |
523 |
154 |
39 |
5 |
0 |
| OW |
0 |
41 |
175 |
205 |
147 |
93 |
50 |
0 |
| VODI |
0 |
2 |
112 |
188 |
214 |
203 |
145 |
0 |
| ODI |
0 |
0 |
10 |
56 |
137 |
195 |
301 |
3 |
| CDI |
0 |
0 |
2 |
25 |
95 |
526 |
822 |
32 |
| VCDI |
0 |
0 |
0 |
10 |
32 |
509 |
6528 |
6331 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13687 |
5699 |
978 |
580 |
209 |
100 |
40 |
0 |
| OW |
0 |
20 |
109 |
143 |
83 |
45 |
69 |
0 |
| VODI |
0 |
0 |
72 |
139 |
130 |
112 |
176 |
0 |
| ODI |
0 |
0 |
23 |
82 |
164 |
157 |
229 |
2 |
| CDI |
0 |
0 |
3 |
42 |
116 |
405 |
525 |
19 |
| VCDI |
0 |
0 |
0 |
21 |
77 |
746 |
6812 |
6345 |
|
Date: 2018-04-18:
| 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 |
13747 |
5660 |
1055 |
366 |
232 |
127 |
11 |
0 |
| OW |
0 |
20 |
240 |
176 |
109 |
148 |
43 |
0 |
| VODI |
0 |
1 |
97 |
108 |
112 |
234 |
123 |
0 |
| ODI |
0 |
0 |
34 |
36 |
110 |
231 |
261 |
0 |
| CDI |
0 |
0 |
9 |
26 |
62 |
305 |
576 |
45 |
| VCDI |
0 |
0 |
3 |
12 |
25 |
387 |
8390 |
5038 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13747 |
5671 |
1066 |
408 |
263 |
181 |
48 |
0 |
| OW |
0 |
9 |
175 |
77 |
58 |
101 |
44 |
0 |
| VODI |
0 |
1 |
124 |
105 |
84 |
150 |
125 |
0 |
| ODI |
0 |
0 |
55 |
62 |
95 |
166 |
199 |
0 |
| CDI |
0 |
0 |
13 |
50 |
93 |
278 |
454 |
23 |
| VCDI |
0 |
0 |
5 |
22 |
57 |
556 |
8534 |
5060 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13701 |
5630 |
1005 |
549 |
212 |
143 |
75 |
0 |
| OW |
0 |
24 |
168 |
120 |
77 |
62 |
63 |
0 |
| VODI |
0 |
0 |
112 |
120 |
120 |
123 |
119 |
1 |
| ODI |
0 |
0 |
36 |
74 |
113 |
175 |
179 |
48 |
| CDI |
0 |
0 |
24 |
83 |
138 |
252 |
447 |
108 |
| VCDI |
0 |
0 |
8 |
58 |
77 |
483 |
7626 |
5806 |
|
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