Validation of sea ice concentration
Bulletin date: 2020-10-22
Model vs. observations, sea ice class contingency tables
Date: 2020-10-16:
| 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 |
23606 |
5660 |
668 |
638 |
224 |
87 |
8 |
0 |
| OW |
0 |
9 |
20 |
36 |
69 |
87 |
16 |
0 |
| VODI |
0 |
7 |
9 |
10 |
31 |
139 |
47 |
0 |
| ODI |
0 |
2 |
6 |
11 |
35 |
114 |
95 |
0 |
| CDI |
0 |
0 |
1 |
11 |
25 |
159 |
158 |
0 |
| VCDI |
0 |
0 |
0 |
4 |
65 |
234 |
3008 |
2860 |
|
...date precedes bulletin
|
Date: 2020-10-20:
| 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 |
23686 |
5551 |
897 |
311 |
227 |
81 |
11 |
0 |
| OW |
4 |
5 |
28 |
32 |
52 |
65 |
23 |
0 |
| VODI |
1 |
0 |
14 |
7 |
44 |
101 |
53 |
0 |
| ODI |
0 |
0 |
2 |
6 |
15 |
79 |
109 |
0 |
| CDI |
0 |
0 |
0 |
0 |
10 |
112 |
360 |
36 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
237 |
3307 |
2692 |
|
...date precedes bulletin
|
Date: 2020-10-22:
| 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 |
23713 |
5686 |
654 |
250 |
139 |
135 |
91 |
0 |
| OW |
13 |
6 |
44 |
32 |
39 |
78 |
33 |
0 |
| VODI |
3 |
0 |
10 |
17 |
30 |
84 |
96 |
0 |
| ODI |
0 |
0 |
4 |
3 |
11 |
55 |
135 |
0 |
| CDI |
0 |
0 |
1 |
5 |
11 |
53 |
401 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
9 |
126 |
3120 |
3070 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
23724 |
5688 |
671 |
259 |
146 |
160 |
100 |
0 |
| OW |
4 |
4 |
26 |
28 |
41 |
60 |
39 |
0 |
| VODI |
1 |
0 |
10 |
12 |
23 |
86 |
88 |
0 |
| ODI |
0 |
0 |
4 |
3 |
7 |
52 |
162 |
0 |
| CDI |
0 |
0 |
2 |
5 |
12 |
43 |
366 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
10 |
130 |
3121 |
3070 |
|
Date: 2020-10-26:
| 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 |
22191 |
6594 |
825 |
315 |
136 |
137 |
10 |
0 |
| OW |
42 |
117 |
50 |
92 |
62 |
47 |
16 |
0 |
| VODI |
10 |
6 |
12 |
42 |
51 |
78 |
50 |
0 |
| ODI |
0 |
1 |
2 |
17 |
30 |
57 |
117 |
0 |
| CDI |
0 |
0 |
0 |
3 |
28 |
157 |
385 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
264 |
3826 |
2387 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
22215 |
6645 |
795 |
368 |
164 |
171 |
33 |
0 |
| OW |
26 |
65 |
73 |
49 |
53 |
50 |
34 |
0 |
| VODI |
2 |
8 |
15 |
22 |
44 |
85 |
79 |
0 |
| ODI |
0 |
0 |
6 |
20 |
20 |
50 |
136 |
0 |
| CDI |
0 |
0 |
0 |
10 |
25 |
122 |
328 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
3 |
262 |
3794 |
2387 |
|
Date: 2020-10-28:
| 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 |
20980 |
7411 |
906 |
358 |
150 |
112 |
32 |
0 |
| OW |
0 |
71 |
122 |
142 |
121 |
73 |
6 |
0 |
| VODI |
0 |
2 |
41 |
38 |
68 |
114 |
42 |
0 |
| ODI |
0 |
0 |
2 |
9 |
20 |
88 |
100 |
0 |
| CDI |
0 |
0 |
1 |
11 |
6 |
75 |
287 |
7 |
| VCDI |
0 |
0 |
0 |
1 |
8 |
144 |
2957 |
3654 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20980 |
7451 |
923 |
436 |
256 |
183 |
49 |
0 |
| OW |
0 |
31 |
117 |
81 |
53 |
85 |
30 |
0 |
| VODI |
0 |
2 |
25 |
19 |
36 |
99 |
66 |
0 |
| ODI |
0 |
0 |
7 |
14 |
14 |
55 |
112 |
0 |
| CDI |
0 |
0 |
0 |
9 |
10 |
64 |
257 |
9 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
120 |
2910 |
3652 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20007 |
7883 |
1009 |
322 |
246 |
318 |
13 |
0 |
| OW |
0 |
55 |
265 |
103 |
99 |
206 |
31 |
0 |
| VODI |
0 |
3 |
88 |
38 |
31 |
89 |
74 |
0 |
| ODI |
0 |
0 |
18 |
25 |
35 |
50 |
61 |
0 |
| CDI |
0 |
0 |
9 |
9 |
27 |
50 |
204 |
16 |
| VCDI |
0 |
0 |
3 |
9 |
30 |
132 |
3089 |
3512 |
|
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