Validation of sea ice concentration
Bulletin date: 2020-11-12
Model vs. observations, sea ice class contingency tables
Date: 2020-11-06:
| 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 |
20324 |
8037 |
587 |
183 |
84 |
94 |
47 |
0 |
| OW |
0 |
128 |
190 |
104 |
38 |
31 |
11 |
0 |
| VODI |
0 |
62 |
129 |
103 |
62 |
23 |
19 |
0 |
| ODI |
0 |
20 |
64 |
78 |
112 |
93 |
32 |
0 |
| CDI |
0 |
0 |
50 |
70 |
114 |
289 |
104 |
0 |
| VCDI |
0 |
0 |
23 |
49 |
69 |
310 |
3889 |
2537 |
|
...date precedes bulletin
|
Date: 2020-11-10:
| 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 |
20227 |
7208 |
952 |
415 |
71 |
33 |
43 |
0 |
| OW |
0 |
20 |
107 |
191 |
67 |
14 |
26 |
0 |
| VODI |
0 |
2 |
34 |
154 |
146 |
65 |
32 |
0 |
| ODI |
0 |
0 |
8 |
55 |
127 |
137 |
31 |
0 |
| CDI |
0 |
0 |
0 |
33 |
100 |
241 |
157 |
0 |
| VCDI |
0 |
0 |
0 |
18 |
79 |
449 |
4069 |
2848 |
|
...date precedes bulletin
|
Date: 2020-11-12:
| 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 |
20467 |
7171 |
559 |
342 |
93 |
43 |
44 |
0 |
| OW |
0 |
155 |
121 |
127 |
76 |
15 |
36 |
0 |
| VODI |
0 |
32 |
119 |
141 |
129 |
55 |
36 |
0 |
| ODI |
0 |
3 |
32 |
82 |
119 |
114 |
34 |
0 |
| CDI |
0 |
4 |
15 |
51 |
70 |
212 |
257 |
0 |
| VCDI |
0 |
0 |
10 |
28 |
49 |
301 |
4283 |
2734 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20467 |
7186 |
547 |
351 |
108 |
46 |
51 |
0 |
| OW |
0 |
140 |
128 |
94 |
60 |
15 |
41 |
0 |
| VODI |
0 |
32 |
113 |
151 |
106 |
48 |
26 |
0 |
| ODI |
0 |
4 |
42 |
93 |
117 |
84 |
22 |
0 |
| CDI |
0 |
3 |
18 |
53 |
95 |
216 |
207 |
0 |
| VCDI |
0 |
0 |
8 |
29 |
50 |
331 |
4343 |
2734 |
|
Date: 2020-11-16:
| 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 |
19454 |
7770 |
1176 |
247 |
127 |
107 |
25 |
0 |
| OW |
0 |
34 |
181 |
108 |
104 |
54 |
5 |
0 |
| VODI |
0 |
0 |
119 |
66 |
125 |
115 |
29 |
0 |
| ODI |
0 |
0 |
21 |
19 |
103 |
194 |
88 |
5 |
| CDI |
0 |
0 |
14 |
17 |
60 |
216 |
275 |
93 |
| VCDI |
0 |
0 |
6 |
2 |
43 |
267 |
3074 |
3816 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
19454 |
7599 |
939 |
199 |
124 |
127 |
36 |
0 |
| OW |
0 |
106 |
166 |
52 |
71 |
30 |
21 |
0 |
| VODI |
0 |
94 |
186 |
76 |
88 |
73 |
33 |
0 |
| ODI |
0 |
5 |
129 |
58 |
87 |
89 |
41 |
6 |
| CDI |
0 |
0 |
76 |
41 |
80 |
146 |
200 |
83 |
| VCDI |
0 |
0 |
21 |
33 |
112 |
488 |
3165 |
3825 |
|
Date: 2020-11-18:
| 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 |
18644 |
7928 |
1345 |
297 |
103 |
114 |
23 |
0 |
| OW |
0 |
64 |
226 |
118 |
54 |
47 |
4 |
0 |
| VODI |
0 |
24 |
92 |
117 |
122 |
68 |
10 |
0 |
| ODI |
0 |
15 |
56 |
43 |
85 |
123 |
70 |
0 |
| CDI |
0 |
0 |
40 |
22 |
73 |
213 |
239 |
87 |
| VCDI |
0 |
0 |
7 |
16 |
83 |
254 |
3652 |
3681 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
18644 |
7773 |
1048 |
263 |
105 |
149 |
28 |
0 |
| OW |
0 |
110 |
230 |
69 |
54 |
32 |
14 |
0 |
| VODI |
0 |
72 |
232 |
60 |
90 |
63 |
37 |
0 |
| ODI |
0 |
32 |
104 |
83 |
76 |
93 |
46 |
7 |
| CDI |
0 |
32 |
62 |
90 |
64 |
133 |
206 |
53 |
| VCDI |
0 |
12 |
90 |
48 |
131 |
349 |
3667 |
3708 |
|
Date: 2020-11-20:
| 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 |
18401 |
7868 |
1051 |
413 |
96 |
85 |
37 |
0 |
| OW |
0 |
107 |
270 |
235 |
82 |
36 |
8 |
0 |
| VODI |
0 |
12 |
87 |
167 |
120 |
77 |
23 |
0 |
| ODI |
0 |
1 |
23 |
77 |
102 |
116 |
104 |
0 |
| CDI |
0 |
0 |
15 |
58 |
85 |
188 |
269 |
0 |
| VCDI |
0 |
0 |
5 |
33 |
53 |
347 |
4341 |
3167 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
18401 |
7523 |
795 |
341 |
82 |
104 |
40 |
0 |
| OW |
0 |
310 |
283 |
113 |
51 |
24 |
15 |
0 |
| VODI |
0 |
100 |
239 |
184 |
92 |
44 |
49 |
0 |
| ODI |
0 |
42 |
73 |
132 |
92 |
80 |
59 |
0 |
| CDI |
0 |
12 |
40 |
97 |
89 |
118 |
183 |
1 |
| VCDI |
0 |
1 |
21 |
116 |
132 |
479 |
4436 |
3166 |
|
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