Validation of sea ice concentration
Bulletin date: 2018-03-01
Model vs. observations, sea ice class contingency tables
Date: 2018-02-23:
| 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 |
14948 |
6925 |
867 |
288 |
161 |
84 |
5 |
0 |
| OW |
0 |
202 |
209 |
140 |
66 |
64 |
29 |
0 |
| VODI |
0 |
68 |
141 |
123 |
116 |
111 |
163 |
6 |
| ODI |
0 |
10 |
74 |
56 |
76 |
116 |
268 |
22 |
| CDI |
0 |
4 |
38 |
48 |
72 |
177 |
630 |
111 |
| VCDI |
0 |
2 |
18 |
27 |
90 |
473 |
6995 |
4136 |
|
...date precedes bulletin
|
Date: 2018-02-27:
| 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 |
14680 |
7173 |
933 |
326 |
129 |
56 |
18 |
0 |
| OW |
0 |
176 |
232 |
178 |
60 |
74 |
37 |
0 |
| VODI |
0 |
98 |
148 |
207 |
137 |
164 |
111 |
0 |
| ODI |
0 |
20 |
76 |
98 |
106 |
163 |
284 |
0 |
| CDI |
0 |
7 |
50 |
56 |
127 |
378 |
928 |
19 |
| VCDI |
0 |
1 |
59 |
79 |
142 |
937 |
7279 |
2413 |
|
...date precedes bulletin
|
Date: 2018-03-01:
| 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 |
14070 |
6991 |
1149 |
289 |
122 |
47 |
9 |
0 |
| OW |
0 |
23 |
216 |
153 |
139 |
95 |
56 |
0 |
| VODI |
0 |
16 |
125 |
121 |
160 |
199 |
175 |
0 |
| ODI |
0 |
12 |
76 |
108 |
144 |
180 |
354 |
0 |
| CDI |
0 |
2 |
60 |
69 |
138 |
252 |
889 |
0 |
| VCDI |
0 |
0 |
93 |
149 |
253 |
1205 |
7504 |
2516 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14070 |
6989 |
1155 |
282 |
132 |
54 |
17 |
0 |
| OW |
0 |
23 |
199 |
156 |
141 |
92 |
48 |
0 |
| VODI |
0 |
18 |
133 |
115 |
154 |
210 |
193 |
0 |
| ODI |
0 |
11 |
69 |
113 |
127 |
165 |
378 |
0 |
| CDI |
0 |
3 |
55 |
69 |
151 |
248 |
785 |
1 |
| VCDI |
0 |
0 |
108 |
154 |
251 |
1209 |
7566 |
2515 |
|
Date: 2018-03-05:
| 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 |
13559 |
6740 |
1228 |
541 |
151 |
47 |
3 |
0 |
| OW |
0 |
9 |
145 |
248 |
138 |
96 |
17 |
0 |
| VODI |
0 |
6 |
30 |
168 |
200 |
199 |
83 |
0 |
| ODI |
0 |
2 |
7 |
38 |
187 |
351 |
168 |
14 |
| CDI |
0 |
0 |
1 |
14 |
109 |
379 |
789 |
134 |
| VCDI |
0 |
0 |
0 |
32 |
119 |
932 |
5655 |
5620 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13559 |
6717 |
1196 |
501 |
151 |
44 |
3 |
0 |
| OW |
0 |
28 |
130 |
220 |
111 |
67 |
10 |
0 |
| VODI |
0 |
2 |
71 |
159 |
162 |
175 |
49 |
0 |
| ODI |
0 |
4 |
6 |
74 |
156 |
220 |
106 |
3 |
| CDI |
0 |
6 |
3 |
29 |
112 |
314 |
337 |
108 |
| VCDI |
0 |
0 |
5 |
58 |
212 |
1184 |
6210 |
5657 |
|
Date: 2018-03-07:
| 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 |
13550 |
6648 |
1321 |
410 |
131 |
31 |
3 |
0 |
| OW |
0 |
14 |
171 |
209 |
103 |
46 |
7 |
0 |
| VODI |
0 |
1 |
70 |
165 |
173 |
159 |
65 |
0 |
| ODI |
0 |
0 |
7 |
75 |
122 |
179 |
175 |
13 |
| CDI |
0 |
0 |
1 |
22 |
72 |
320 |
462 |
128 |
| VCDI |
0 |
0 |
3 |
11 |
32 |
790 |
6760 |
5710 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13550 |
6626 |
1241 |
386 |
145 |
45 |
4 |
0 |
| OW |
0 |
29 |
177 |
188 |
99 |
58 |
13 |
0 |
| VODI |
0 |
8 |
114 |
157 |
154 |
141 |
69 |
0 |
| ODI |
0 |
0 |
31 |
93 |
100 |
171 |
166 |
2 |
| CDI |
0 |
0 |
5 |
43 |
76 |
270 |
464 |
82 |
| VCDI |
0 |
0 |
5 |
25 |
59 |
840 |
6756 |
5767 |
|
Date: 2018-03-09:
| 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 |
13745 |
6525 |
1037 |
328 |
185 |
88 |
1 |
0 |
| OW |
0 |
33 |
192 |
141 |
97 |
73 |
17 |
0 |
| VODI |
0 |
6 |
99 |
144 |
126 |
172 |
82 |
0 |
| ODI |
0 |
0 |
11 |
103 |
109 |
169 |
146 |
0 |
| CDI |
0 |
0 |
0 |
30 |
71 |
223 |
473 |
32 |
| VCDI |
0 |
0 |
1 |
8 |
40 |
636 |
8466 |
4550 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13745 |
6485 |
944 |
327 |
220 |
118 |
12 |
0 |
| OW |
0 |
65 |
210 |
118 |
81 |
93 |
37 |
0 |
| VODI |
0 |
14 |
138 |
138 |
103 |
183 |
103 |
0 |
| ODI |
0 |
0 |
40 |
78 |
96 |
185 |
214 |
2 |
| CDI |
0 |
0 |
7 |
55 |
55 |
213 |
642 |
38 |
| VCDI |
0 |
0 |
1 |
38 |
73 |
569 |
8177 |
4542 |
|
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