Validation of sea ice concentration
Bulletin date: 2020-10-29
Model vs. observations, sea ice class contingency tables
Date: 2020-10-23:
| 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 |
23869 |
5571 |
597 |
265 |
145 |
83 |
78 |
0 |
| OW |
19 |
30 |
27 |
48 |
46 |
56 |
39 |
0 |
| VODI |
3 |
5 |
11 |
21 |
33 |
82 |
92 |
0 |
| ODI |
0 |
1 |
1 |
6 |
14 |
65 |
112 |
0 |
| CDI |
0 |
0 |
3 |
3 |
9 |
104 |
411 |
5 |
| VCDI |
0 |
0 |
0 |
0 |
7 |
168 |
2978 |
3152 |
|
...date precedes bulletin
|
Date: 2020-10-27:
| 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 |
23344 |
5633 |
553 |
301 |
135 |
104 |
34 |
0 |
| OW |
219 |
5 |
36 |
85 |
55 |
49 |
13 |
0 |
| VODI |
19 |
1 |
10 |
38 |
72 |
83 |
33 |
0 |
| ODI |
2 |
0 |
1 |
18 |
32 |
77 |
99 |
0 |
| CDI |
0 |
0 |
0 |
6 |
33 |
122 |
364 |
2 |
| VCDI |
0 |
0 |
0 |
0 |
10 |
170 |
3236 |
3165 |
|
...date precedes bulletin
|
Date: 2020-10-29:
| 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 |
20097 |
8039 |
1096 |
290 |
192 |
78 |
6 |
0 |
| OW |
0 |
23 |
185 |
147 |
167 |
72 |
8 |
0 |
| VODI |
0 |
0 |
63 |
41 |
108 |
103 |
34 |
0 |
| ODI |
0 |
0 |
11 |
32 |
26 |
93 |
64 |
0 |
| CDI |
0 |
0 |
3 |
16 |
17 |
75 |
232 |
8 |
| VCDI |
0 |
0 |
0 |
5 |
14 |
208 |
3128 |
3478 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20097 |
8049 |
1117 |
323 |
242 |
88 |
7 |
0 |
| OW |
0 |
13 |
146 |
121 |
108 |
56 |
7 |
0 |
| VODI |
0 |
0 |
75 |
41 |
121 |
115 |
38 |
0 |
| ODI |
0 |
0 |
17 |
25 |
24 |
91 |
81 |
0 |
| CDI |
0 |
0 |
3 |
17 |
14 |
79 |
286 |
7 |
| VCDI |
0 |
0 |
0 |
4 |
15 |
200 |
3053 |
3479 |
|
Date: 2020-11-02:
| 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 |
19933 |
7869 |
1306 |
267 |
116 |
122 |
17 |
0 |
| OW |
0 |
3 |
104 |
110 |
86 |
44 |
14 |
0 |
| VODI |
0 |
0 |
25 |
96 |
102 |
140 |
38 |
0 |
| ODI |
0 |
0 |
2 |
19 |
65 |
244 |
108 |
0 |
| CDI |
0 |
0 |
2 |
19 |
30 |
175 |
247 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
26 |
87 |
2915 |
3826 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
19933 |
7833 |
1208 |
278 |
160 |
169 |
29 |
0 |
| OW |
0 |
38 |
147 |
83 |
86 |
135 |
8 |
0 |
| VODI |
0 |
1 |
76 |
87 |
60 |
260 |
68 |
0 |
| ODI |
0 |
0 |
4 |
43 |
60 |
103 |
121 |
0 |
| CDI |
0 |
0 |
3 |
18 |
30 |
60 |
272 |
1 |
| VCDI |
0 |
0 |
1 |
4 |
29 |
85 |
2841 |
3825 |
|
Date: 2020-11-04:
| 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 |
20062 |
7975 |
980 |
289 |
132 |
101 |
40 |
0 |
| OW |
0 |
30 |
131 |
144 |
66 |
35 |
9 |
0 |
| VODI |
0 |
4 |
52 |
91 |
148 |
90 |
15 |
0 |
| ODI |
0 |
0 |
24 |
46 |
93 |
240 |
63 |
0 |
| CDI |
0 |
0 |
14 |
36 |
49 |
272 |
225 |
0 |
| VCDI |
0 |
0 |
2 |
12 |
25 |
116 |
3718 |
2830 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20062 |
7917 |
929 |
281 |
166 |
110 |
52 |
0 |
| OW |
0 |
82 |
176 |
132 |
83 |
76 |
20 |
0 |
| VODI |
0 |
10 |
72 |
125 |
102 |
273 |
50 |
0 |
| ODI |
0 |
0 |
14 |
50 |
92 |
152 |
89 |
0 |
| CDI |
0 |
0 |
10 |
18 |
45 |
123 |
322 |
3 |
| VCDI |
0 |
0 |
2 |
12 |
25 |
120 |
3537 |
2827 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20324 |
8013 |
607 |
222 |
106 |
118 |
61 |
0 |
| OW |
0 |
129 |
227 |
121 |
65 |
30 |
29 |
0 |
| VODI |
0 |
61 |
88 |
80 |
124 |
177 |
39 |
0 |
| ODI |
0 |
30 |
42 |
65 |
71 |
208 |
51 |
0 |
| CDI |
0 |
14 |
41 |
55 |
61 |
115 |
139 |
0 |
| VCDI |
0 |
0 |
38 |
44 |
52 |
192 |
3783 |
2537 |
|
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