Validation of sea ice concentration
Bulletin date: 2022-03-31
Model vs. observations, sea ice class contingency tables
Date: 2022-03-25:
| 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 |
13240 |
5707 |
857 |
324 |
144 |
84 |
87 |
0 |
| OW |
0 |
103 |
224 |
142 |
125 |
87 |
40 |
0 |
| VODI |
0 |
53 |
172 |
165 |
164 |
201 |
77 |
0 |
| ODI |
0 |
11 |
80 |
129 |
201 |
215 |
137 |
0 |
| CDI |
0 |
0 |
46 |
77 |
136 |
293 |
453 |
5 |
| VCDI |
0 |
0 |
147 |
212 |
292 |
658 |
7474 |
5597 |
|
...date precedes bulletin
|
Date: 2022-03-29:
| 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 |
12767 |
5447 |
1114 |
639 |
136 |
78 |
85 |
0 |
| OW |
0 |
20 |
114 |
187 |
120 |
71 |
39 |
0 |
| VODI |
0 |
2 |
53 |
211 |
224 |
220 |
50 |
0 |
| ODI |
0 |
0 |
17 |
125 |
222 |
352 |
120 |
17 |
| CDI |
0 |
0 |
7 |
58 |
167 |
537 |
535 |
63 |
| VCDI |
0 |
0 |
65 |
137 |
261 |
1147 |
8235 |
4517 |
|
...date precedes bulletin
|
Date: 2022-03-31:
| 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 |
12695 |
5596 |
1060 |
381 |
152 |
70 |
81 |
0 |
| OW |
0 |
10 |
169 |
154 |
149 |
66 |
52 |
5 |
| VODI |
0 |
0 |
128 |
179 |
174 |
174 |
85 |
10 |
| ODI |
0 |
0 |
28 |
90 |
187 |
330 |
144 |
4 |
| CDI |
0 |
0 |
3 |
51 |
161 |
481 |
737 |
14 |
| VCDI |
0 |
0 |
2 |
95 |
211 |
646 |
7845 |
5740 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12695 |
5591 |
1068 |
380 |
170 |
81 |
88 |
0 |
| OW |
0 |
13 |
164 |
153 |
117 |
65 |
45 |
5 |
| VODI |
0 |
2 |
118 |
180 |
184 |
178 |
92 |
11 |
| ODI |
0 |
0 |
34 |
88 |
204 |
313 |
156 |
4 |
| CDI |
0 |
0 |
4 |
53 |
149 |
486 |
726 |
14 |
| VCDI |
0 |
0 |
2 |
96 |
210 |
644 |
7837 |
5739 |
|
Date: 2022-04-04:
| 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 |
12742 |
5788 |
895 |
398 |
100 |
41 |
77 |
0 |
| OW |
0 |
22 |
169 |
171 |
77 |
63 |
48 |
0 |
| VODI |
0 |
8 |
135 |
201 |
149 |
138 |
92 |
0 |
| ODI |
0 |
2 |
31 |
222 |
201 |
249 |
152 |
0 |
| CDI |
0 |
0 |
1 |
67 |
154 |
470 |
459 |
0 |
| VCDI |
0 |
0 |
0 |
25 |
94 |
1276 |
9567 |
3875 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12742 |
5765 |
788 |
369 |
102 |
60 |
112 |
0 |
| OW |
0 |
43 |
195 |
136 |
68 |
59 |
51 |
0 |
| VODI |
0 |
12 |
177 |
179 |
130 |
119 |
113 |
0 |
| ODI |
0 |
0 |
61 |
203 |
161 |
182 |
147 |
0 |
| CDI |
0 |
0 |
10 |
153 |
192 |
431 |
451 |
0 |
| VCDI |
0 |
0 |
0 |
44 |
122 |
1386 |
9521 |
3875 |
|
Date: 2022-04-06:
| 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 |
12558 |
5748 |
962 |
415 |
159 |
68 |
80 |
0 |
| OW |
0 |
15 |
147 |
168 |
108 |
91 |
41 |
0 |
| VODI |
0 |
0 |
98 |
182 |
170 |
157 |
83 |
0 |
| ODI |
0 |
0 |
6 |
194 |
245 |
221 |
184 |
10 |
| CDI |
0 |
0 |
1 |
72 |
166 |
417 |
664 |
34 |
| VCDI |
0 |
0 |
0 |
52 |
124 |
446 |
7899 |
6174 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12558 |
5710 |
786 |
362 |
150 |
85 |
124 |
0 |
| OW |
0 |
34 |
200 |
117 |
71 |
61 |
52 |
0 |
| VODI |
0 |
18 |
153 |
179 |
154 |
137 |
112 |
0 |
| ODI |
0 |
1 |
62 |
207 |
213 |
219 |
224 |
8 |
| CDI |
0 |
0 |
12 |
140 |
226 |
387 |
581 |
27 |
| VCDI |
0 |
0 |
1 |
78 |
158 |
511 |
7858 |
6183 |
|
Date: 2022-04-08:
| 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 |
12434 |
5647 |
973 |
442 |
231 |
86 |
94 |
0 |
| OW |
0 |
7 |
161 |
160 |
91 |
95 |
54 |
0 |
| VODI |
0 |
0 |
98 |
186 |
150 |
167 |
106 |
6 |
| ODI |
0 |
0 |
29 |
106 |
175 |
288 |
158 |
8 |
| CDI |
0 |
0 |
4 |
83 |
174 |
373 |
490 |
6 |
| VCDI |
0 |
0 |
2 |
20 |
123 |
572 |
9295 |
5065 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12434 |
5624 |
868 |
328 |
186 |
84 |
130 |
0 |
| OW |
0 |
23 |
170 |
150 |
85 |
70 |
61 |
2 |
| VODI |
0 |
5 |
114 |
180 |
132 |
172 |
106 |
4 |
| ODI |
0 |
2 |
67 |
147 |
146 |
248 |
214 |
8 |
| CDI |
0 |
0 |
35 |
151 |
225 |
407 |
552 |
6 |
| VCDI |
0 |
0 |
13 |
41 |
170 |
600 |
9134 |
5065 |
|
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