Validation of sea ice concentration
Bulletin date: 2021-02-04
Model vs. observations, sea ice class contingency tables
Date: 2021-01-29:
| 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 |
13246 |
6053 |
801 |
385 |
211 |
80 |
29 |
0 |
| OW |
0 |
79 |
157 |
113 |
92 |
72 |
43 |
0 |
| VODI |
0 |
44 |
131 |
105 |
120 |
114 |
68 |
0 |
| ODI |
0 |
16 |
64 |
73 |
101 |
173 |
84 |
0 |
| CDI |
0 |
14 |
44 |
77 |
82 |
310 |
264 |
6 |
| VCDI |
0 |
1 |
73 |
90 |
124 |
586 |
8000 |
6034 |
|
...date precedes bulletin
|
Date: 2021-02-02:
| 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 |
12811 |
6124 |
914 |
395 |
229 |
108 |
14 |
0 |
| OW |
0 |
43 |
115 |
106 |
116 |
97 |
16 |
0 |
| VODI |
0 |
19 |
96 |
123 |
128 |
172 |
42 |
1 |
| ODI |
0 |
8 |
60 |
102 |
135 |
236 |
122 |
44 |
| CDI |
0 |
5 |
49 |
75 |
138 |
273 |
350 |
131 |
| VCDI |
0 |
2 |
29 |
152 |
219 |
556 |
8430 |
5374 |
|
...date precedes bulletin
|
Date: 2021-02-04:
| 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 |
12857 |
6132 |
737 |
434 |
162 |
55 |
11 |
0 |
| OW |
0 |
90 |
87 |
114 |
103 |
93 |
26 |
0 |
| VODI |
0 |
40 |
102 |
112 |
109 |
125 |
58 |
1 |
| ODI |
0 |
13 |
66 |
103 |
135 |
158 |
86 |
7 |
| CDI |
0 |
5 |
62 |
110 |
152 |
316 |
263 |
99 |
| VCDI |
0 |
0 |
141 |
183 |
249 |
567 |
8016 |
5980 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12857 |
6136 |
749 |
442 |
183 |
70 |
18 |
0 |
| OW |
0 |
81 |
81 |
114 |
83 |
86 |
23 |
0 |
| VODI |
0 |
42 |
94 |
100 |
109 |
122 |
53 |
1 |
| ODI |
0 |
13 |
66 |
111 |
136 |
184 |
84 |
8 |
| CDI |
0 |
8 |
55 |
109 |
149 |
294 |
249 |
100 |
| VCDI |
0 |
0 |
150 |
180 |
250 |
558 |
8033 |
5978 |
|
Date: 2021-02-08:
| 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 |
12570 |
5948 |
708 |
508 |
204 |
59 |
16 |
0 |
| OW |
0 |
56 |
115 |
118 |
116 |
55 |
18 |
0 |
| VODI |
0 |
29 |
84 |
139 |
164 |
122 |
45 |
0 |
| ODI |
0 |
8 |
50 |
86 |
133 |
194 |
119 |
0 |
| CDI |
0 |
4 |
30 |
90 |
237 |
264 |
375 |
47 |
| VCDI |
0 |
16 |
19 |
88 |
200 |
810 |
8750 |
5565 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12570 |
5887 |
678 |
497 |
233 |
85 |
34 |
0 |
| OW |
0 |
79 |
81 |
111 |
104 |
70 |
33 |
0 |
| VODI |
0 |
46 |
79 |
115 |
124 |
118 |
52 |
0 |
| ODI |
0 |
20 |
63 |
78 |
108 |
118 |
84 |
0 |
| CDI |
0 |
11 |
62 |
90 |
234 |
206 |
270 |
39 |
| VCDI |
0 |
18 |
43 |
138 |
251 |
907 |
8850 |
5573 |
|
Date: 2021-02-10:
| 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 |
12244 |
5810 |
872 |
420 |
268 |
175 |
20 |
0 |
| OW |
0 |
34 |
106 |
118 |
98 |
106 |
23 |
0 |
| VODI |
0 |
6 |
66 |
97 |
128 |
169 |
50 |
0 |
| ODI |
0 |
0 |
33 |
41 |
100 |
190 |
85 |
0 |
| CDI |
0 |
0 |
15 |
40 |
106 |
341 |
389 |
1 |
| VCDI |
0 |
0 |
5 |
36 |
103 |
677 |
9376 |
5811 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12244 |
5782 |
846 |
423 |
283 |
188 |
47 |
0 |
| OW |
0 |
39 |
95 |
87 |
93 |
128 |
33 |
0 |
| VODI |
0 |
24 |
64 |
85 |
86 |
183 |
69 |
0 |
| ODI |
0 |
4 |
40 |
44 |
96 |
184 |
94 |
0 |
| CDI |
0 |
1 |
28 |
48 |
93 |
261 |
285 |
4 |
| VCDI |
0 |
0 |
24 |
65 |
152 |
714 |
9415 |
5808 |
|
Date: 2021-02-12:
| 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 |
12131 |
5835 |
837 |
365 |
255 |
189 |
142 |
0 |
| OW |
0 |
15 |
87 |
100 |
69 |
83 |
88 |
0 |
| VODI |
0 |
1 |
65 |
103 |
75 |
125 |
132 |
0 |
| ODI |
0 |
0 |
31 |
59 |
67 |
100 |
151 |
0 |
| CDI |
0 |
0 |
13 |
54 |
76 |
177 |
412 |
3 |
| VCDI |
0 |
0 |
9 |
49 |
54 |
327 |
9049 |
6831 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12131 |
5772 |
811 |
355 |
261 |
204 |
196 |
0 |
| OW |
0 |
41 |
84 |
85 |
59 |
80 |
92 |
0 |
| VODI |
0 |
29 |
55 |
92 |
68 |
124 |
152 |
0 |
| ODI |
0 |
6 |
36 |
57 |
50 |
115 |
233 |
0 |
| CDI |
0 |
3 |
27 |
51 |
66 |
141 |
422 |
23 |
| VCDI |
0 |
0 |
29 |
90 |
92 |
337 |
8879 |
6811 |
|
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