Validation of sea ice concentration
Bulletin date: 2020-11-05
Model vs. observations, sea ice class contingency tables
Date: 2020-10-30:
| 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 |
20007 |
7907 |
1099 |
300 |
170 |
142 |
8 |
0 |
| OW |
0 |
30 |
172 |
113 |
121 |
198 |
7 |
0 |
| VODI |
0 |
4 |
83 |
43 |
65 |
167 |
30 |
0 |
| ODI |
0 |
0 |
28 |
23 |
41 |
107 |
62 |
0 |
| CDI |
0 |
0 |
9 |
21 |
31 |
65 |
248 |
7 |
| VCDI |
0 |
0 |
1 |
6 |
40 |
166 |
3117 |
3521 |
|
...date precedes bulletin
|
Date: 2020-11-03:
| 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 |
19946 |
7948 |
1215 |
284 |
119 |
104 |
53 |
0 |
| OW |
0 |
7 |
92 |
137 |
72 |
54 |
9 |
0 |
| VODI |
0 |
0 |
26 |
60 |
149 |
135 |
21 |
0 |
| ODI |
0 |
0 |
11 |
34 |
71 |
255 |
64 |
0 |
| CDI |
0 |
0 |
4 |
27 |
31 |
220 |
214 |
0 |
| VCDI |
0 |
0 |
0 |
7 |
34 |
179 |
3611 |
2966 |
|
...date precedes bulletin
|
Date: 2020-11-05:
| 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 |
20117 |
8076 |
765 |
255 |
122 |
102 |
43 |
0 |
| OW |
0 |
78 |
170 |
125 |
46 |
28 |
15 |
0 |
| VODI |
0 |
21 |
119 |
97 |
88 |
43 |
13 |
0 |
| ODI |
0 |
6 |
57 |
73 |
141 |
148 |
42 |
0 |
| CDI |
0 |
0 |
30 |
69 |
75 |
278 |
171 |
0 |
| VCDI |
0 |
0 |
10 |
25 |
46 |
229 |
3905 |
2531 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20116 |
8093 |
800 |
271 |
131 |
112 |
49 |
0 |
| OW |
1 |
57 |
144 |
110 |
39 |
22 |
10 |
0 |
| VODI |
0 |
21 |
112 |
104 |
94 |
48 |
19 |
0 |
| ODI |
0 |
6 |
49 |
69 |
134 |
146 |
48 |
0 |
| CDI |
0 |
4 |
32 |
59 |
77 |
252 |
198 |
1 |
| VCDI |
0 |
0 |
14 |
31 |
43 |
248 |
3865 |
2530 |
|
Date: 2020-11-09:
| 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 |
20228 |
7266 |
858 |
486 |
129 |
49 |
40 |
0 |
| OW |
0 |
31 |
98 |
189 |
66 |
24 |
34 |
0 |
| VODI |
0 |
18 |
36 |
147 |
135 |
66 |
27 |
0 |
| ODI |
0 |
3 |
20 |
76 |
129 |
103 |
48 |
0 |
| CDI |
0 |
0 |
47 |
55 |
103 |
174 |
246 |
0 |
| VCDI |
0 |
0 |
8 |
24 |
113 |
419 |
4146 |
2518 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20228 |
7212 |
771 |
453 |
124 |
64 |
81 |
0 |
| OW |
0 |
95 |
140 |
167 |
81 |
25 |
14 |
0 |
| VODI |
0 |
11 |
104 |
182 |
138 |
81 |
28 |
0 |
| ODI |
0 |
0 |
24 |
69 |
97 |
87 |
61 |
0 |
| CDI |
0 |
0 |
19 |
42 |
86 |
158 |
223 |
0 |
| VCDI |
0 |
0 |
9 |
64 |
149 |
420 |
4134 |
2518 |
|
Date: 2020-11-11:
| 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 |
20425 |
7172 |
704 |
359 |
76 |
37 |
50 |
0 |
| OW |
0 |
54 |
129 |
164 |
57 |
27 |
30 |
0 |
| VODI |
0 |
4 |
72 |
172 |
110 |
69 |
36 |
0 |
| ODI |
0 |
0 |
12 |
64 |
120 |
135 |
20 |
0 |
| CDI |
0 |
0 |
9 |
35 |
106 |
232 |
227 |
0 |
| VCDI |
0 |
0 |
2 |
18 |
58 |
318 |
3779 |
3277 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20425 |
7054 |
668 |
337 |
82 |
59 |
100 |
0 |
| OW |
0 |
147 |
148 |
143 |
51 |
21 |
14 |
0 |
| VODI |
0 |
25 |
72 |
190 |
128 |
99 |
28 |
0 |
| ODI |
0 |
3 |
19 |
74 |
119 |
136 |
58 |
0 |
| CDI |
0 |
1 |
14 |
38 |
86 |
180 |
216 |
0 |
| VCDI |
0 |
0 |
7 |
30 |
61 |
323 |
3726 |
3277 |
|
Date: 2020-11-13:
| 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 |
19910 |
7313 |
824 |
243 |
114 |
107 |
51 |
0 |
| OW |
0 |
93 |
202 |
161 |
65 |
39 |
45 |
0 |
| VODI |
0 |
14 |
131 |
153 |
97 |
91 |
55 |
0 |
| ODI |
0 |
4 |
48 |
78 |
98 |
103 |
57 |
0 |
| CDI |
0 |
1 |
19 |
50 |
95 |
196 |
284 |
23 |
| VCDI |
0 |
0 |
5 |
8 |
60 |
411 |
3750 |
3161 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
19910 |
7170 |
753 |
254 |
110 |
113 |
114 |
0 |
| OW |
0 |
151 |
136 |
117 |
95 |
44 |
39 |
0 |
| VODI |
0 |
69 |
167 |
125 |
81 |
116 |
61 |
0 |
| ODI |
0 |
21 |
106 |
106 |
81 |
79 |
73 |
3 |
| CDI |
0 |
13 |
32 |
63 |
81 |
153 |
296 |
79 |
| VCDI |
0 |
1 |
35 |
28 |
81 |
442 |
3659 |
3102 |
|
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