Validation of sea ice concentration
Bulletin date: 2022-05-05
Model vs. observations, sea ice class contingency tables
Date: 2022-04-29:
| 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 |
12141 |
5992 |
1183 |
507 |
236 |
146 |
98 |
0 |
| OW |
0 |
44 |
245 |
124 |
107 |
84 |
82 |
0 |
| VODI |
0 |
0 |
98 |
144 |
128 |
134 |
204 |
0 |
| ODI |
0 |
0 |
15 |
108 |
115 |
127 |
331 |
3 |
| CDI |
0 |
0 |
9 |
61 |
135 |
213 |
968 |
31 |
| VCDI |
0 |
0 |
6 |
72 |
128 |
292 |
8070 |
5778 |
|
...date precedes bulletin
|
Date: 2022-05-03:
| 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 |
11779 |
6073 |
1484 |
646 |
287 |
162 |
127 |
0 |
| OW |
0 |
7 |
77 |
137 |
135 |
88 |
80 |
0 |
| VODI |
0 |
0 |
49 |
128 |
160 |
135 |
146 |
0 |
| ODI |
0 |
1 |
34 |
90 |
88 |
174 |
228 |
2 |
| CDI |
0 |
1 |
18 |
58 |
100 |
321 |
1210 |
9 |
| VCDI |
0 |
0 |
20 |
67 |
123 |
268 |
8308 |
5339 |
|
...date precedes bulletin
|
Date: 2022-05-05:
| 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 |
11995 |
6046 |
1297 |
548 |
291 |
156 |
157 |
0 |
| OW |
0 |
13 |
82 |
126 |
105 |
88 |
129 |
1 |
| VODI |
0 |
1 |
20 |
71 |
101 |
156 |
204 |
1 |
| ODI |
0 |
1 |
14 |
47 |
73 |
182 |
319 |
0 |
| CDI |
0 |
0 |
22 |
41 |
68 |
253 |
1625 |
7 |
| VCDI |
0 |
0 |
4 |
83 |
97 |
212 |
8452 |
5071 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11995 |
6025 |
1308 |
583 |
315 |
177 |
170 |
0 |
| OW |
0 |
34 |
59 |
93 |
87 |
84 |
123 |
2 |
| VODI |
0 |
0 |
31 |
69 |
97 |
142 |
209 |
0 |
| ODI |
0 |
2 |
13 |
39 |
71 |
191 |
307 |
0 |
| CDI |
0 |
0 |
19 |
48 |
66 |
247 |
1640 |
7 |
| VCDI |
0 |
0 |
9 |
84 |
99 |
206 |
8437 |
5071 |
|
Date: 2022-05-09:
| 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 |
12237 |
6273 |
1025 |
583 |
312 |
195 |
98 |
0 |
| OW |
0 |
4 |
40 |
178 |
108 |
94 |
72 |
0 |
| VODI |
0 |
5 |
11 |
113 |
149 |
169 |
143 |
0 |
| ODI |
0 |
1 |
2 |
58 |
124 |
310 |
306 |
0 |
| CDI |
0 |
0 |
1 |
72 |
110 |
342 |
1605 |
9 |
| VCDI |
0 |
0 |
0 |
44 |
123 |
463 |
8135 |
4645 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12237 |
6266 |
994 |
565 |
333 |
232 |
138 |
0 |
| OW |
0 |
11 |
53 |
107 |
77 |
105 |
97 |
0 |
| VODI |
0 |
6 |
25 |
136 |
107 |
144 |
191 |
0 |
| ODI |
0 |
0 |
6 |
86 |
118 |
205 |
312 |
2 |
| CDI |
0 |
0 |
1 |
64 |
135 |
380 |
1338 |
9 |
| VCDI |
0 |
0 |
0 |
90 |
156 |
507 |
8283 |
4643 |
|
Date: 2022-05-11:
| 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 |
12293 |
6337 |
1030 |
694 |
319 |
167 |
87 |
0 |
| OW |
0 |
9 |
74 |
163 |
102 |
86 |
60 |
0 |
| VODI |
0 |
6 |
38 |
151 |
143 |
139 |
142 |
0 |
| ODI |
0 |
0 |
11 |
102 |
146 |
189 |
280 |
0 |
| CDI |
0 |
0 |
0 |
110 |
149 |
375 |
1468 |
11 |
| VCDI |
0 |
0 |
0 |
86 |
228 |
488 |
8055 |
4421 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12293 |
6310 |
1004 |
622 |
331 |
198 |
126 |
0 |
| OW |
0 |
35 |
67 |
186 |
87 |
76 |
95 |
0 |
| VODI |
0 |
7 |
53 |
152 |
141 |
137 |
178 |
0 |
| ODI |
0 |
0 |
22 |
112 |
108 |
168 |
305 |
3 |
| CDI |
0 |
0 |
7 |
125 |
167 |
308 |
1172 |
10 |
| VCDI |
0 |
0 |
0 |
109 |
253 |
557 |
8216 |
4419 |
|
Date: 2022-05-13:
| 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 |
12614 |
6450 |
805 |
662 |
176 |
133 |
132 |
0 |
| OW |
0 |
18 |
69 |
185 |
74 |
47 |
92 |
0 |
| VODI |
0 |
2 |
38 |
178 |
108 |
101 |
140 |
0 |
| ODI |
0 |
2 |
19 |
142 |
149 |
170 |
276 |
0 |
| CDI |
0 |
0 |
2 |
137 |
166 |
417 |
1476 |
4 |
| VCDI |
0 |
0 |
0 |
103 |
148 |
551 |
7961 |
4412 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12614 |
6414 |
812 |
616 |
182 |
130 |
131 |
0 |
| OW |
0 |
48 |
51 |
168 |
82 |
71 |
107 |
0 |
| VODI |
0 |
7 |
38 |
219 |
108 |
110 |
208 |
0 |
| ODI |
0 |
3 |
26 |
181 |
114 |
141 |
343 |
1 |
| CDI |
0 |
0 |
6 |
128 |
169 |
381 |
1421 |
8 |
| VCDI |
0 |
0 |
0 |
95 |
166 |
586 |
7867 |
4407 |
|
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