Validation of sea ice concentration
Bulletin date: 2022-08-18
Model vs. observations, sea ice class contingency tables
Date: 2022-08-12:
| 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 |
20931 |
8262 |
1539 |
315 |
117 |
99 |
17 |
0 |
| OW |
0 |
0 |
96 |
74 |
62 |
42 |
26 |
0 |
| VODI |
0 |
0 |
39 |
81 |
124 |
117 |
107 |
0 |
| ODI |
0 |
0 |
5 |
35 |
59 |
108 |
416 |
4 |
| CDI |
0 |
0 |
0 |
42 |
55 |
88 |
2334 |
1687 |
| VCDI |
0 |
0 |
0 |
0 |
3 |
4 |
658 |
613 |
|
...date precedes bulletin
|
Date: 2022-08-16:
| 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 |
21374 |
8251 |
1104 |
227 |
169 |
112 |
15 |
0 |
| OW |
0 |
6 |
56 |
73 |
68 |
28 |
26 |
0 |
| VODI |
0 |
0 |
32 |
84 |
123 |
107 |
84 |
0 |
| ODI |
0 |
0 |
7 |
66 |
68 |
136 |
375 |
0 |
| CDI |
0 |
0 |
0 |
37 |
73 |
113 |
2255 |
832 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
938 |
1320 |
|
...date precedes bulletin
|
Date: 2022-08-18:
| 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 |
21747 |
8012 |
1087 |
190 |
146 |
112 |
19 |
0 |
| OW |
0 |
14 |
76 |
64 |
82 |
42 |
18 |
0 |
| VODI |
0 |
0 |
68 |
64 |
128 |
104 |
86 |
0 |
| ODI |
0 |
0 |
22 |
45 |
59 |
141 |
329 |
0 |
| CDI |
0 |
0 |
9 |
40 |
94 |
140 |
2176 |
945 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
1 |
972 |
1126 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
21747 |
8015 |
1088 |
201 |
159 |
121 |
21 |
0 |
| OW |
0 |
11 |
73 |
54 |
77 |
38 |
18 |
0 |
| VODI |
0 |
0 |
71 |
66 |
114 |
94 |
68 |
0 |
| ODI |
0 |
0 |
23 |
50 |
67 |
134 |
397 |
0 |
| CDI |
0 |
0 |
7 |
32 |
88 |
144 |
2110 |
779 |
| VCDI |
0 |
0 |
0 |
0 |
5 |
9 |
986 |
1292 |
|
Date: 2022-08-22:
| 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 |
24305 |
5594 |
918 |
322 |
142 |
13 |
4 |
0 |
| OW |
0 |
16 |
78 |
117 |
73 |
11 |
5 |
0 |
| VODI |
0 |
0 |
29 |
149 |
119 |
65 |
30 |
0 |
| ODI |
0 |
0 |
3 |
42 |
125 |
269 |
252 |
0 |
| CDI |
0 |
0 |
0 |
20 |
81 |
98 |
1765 |
1047 |
| VCDI |
0 |
0 |
0 |
4 |
15 |
54 |
1300 |
1094 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24305 |
5571 |
911 |
313 |
154 |
20 |
4 |
0 |
| OW |
0 |
25 |
65 |
105 |
95 |
20 |
6 |
0 |
| VODI |
0 |
13 |
33 |
130 |
90 |
83 |
37 |
0 |
| ODI |
0 |
1 |
19 |
69 |
91 |
167 |
233 |
0 |
| CDI |
0 |
0 |
0 |
36 |
110 |
211 |
2058 |
1128 |
| VCDI |
0 |
0 |
0 |
1 |
15 |
9 |
1018 |
1013 |
|
Date: 2022-08-24:
| 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 |
24350 |
5600 |
749 |
375 |
146 |
23 |
7 |
0 |
| OW |
0 |
6 |
50 |
134 |
90 |
28 |
8 |
0 |
| VODI |
0 |
0 |
12 |
115 |
161 |
62 |
37 |
0 |
| ODI |
0 |
0 |
3 |
43 |
135 |
247 |
192 |
0 |
| CDI |
0 |
0 |
0 |
20 |
93 |
194 |
1766 |
1098 |
| VCDI |
0 |
0 |
0 |
6 |
15 |
55 |
1272 |
1067 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24350 |
5574 |
738 |
361 |
167 |
37 |
7 |
0 |
| OW |
0 |
26 |
44 |
103 |
89 |
31 |
10 |
0 |
| VODI |
0 |
6 |
23 |
118 |
126 |
64 |
33 |
0 |
| ODI |
0 |
0 |
9 |
72 |
114 |
178 |
214 |
0 |
| CDI |
0 |
0 |
0 |
37 |
128 |
266 |
1865 |
1153 |
| VCDI |
0 |
0 |
0 |
2 |
16 |
33 |
1153 |
1012 |
|
Date: 2022-08-26:
| 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 |
24060 |
5495 |
963 |
398 |
171 |
41 |
8 |
0 |
| OW |
0 |
1 |
22 |
149 |
117 |
32 |
10 |
0 |
| VODI |
0 |
0 |
3 |
64 |
172 |
93 |
39 |
0 |
| ODI |
0 |
0 |
0 |
8 |
98 |
300 |
197 |
0 |
| CDI |
0 |
0 |
0 |
17 |
74 |
226 |
1871 |
965 |
| VCDI |
0 |
0 |
0 |
6 |
14 |
53 |
1234 |
1258 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24060 |
5495 |
936 |
392 |
191 |
73 |
13 |
0 |
| OW |
0 |
1 |
33 |
111 |
104 |
40 |
21 |
0 |
| VODI |
0 |
0 |
18 |
88 |
131 |
77 |
41 |
0 |
| ODI |
0 |
0 |
1 |
26 |
107 |
218 |
229 |
1 |
| CDI |
0 |
0 |
0 |
23 |
98 |
303 |
1924 |
1244 |
| VCDI |
0 |
0 |
0 |
2 |
15 |
34 |
1131 |
978 |
|
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