Validation of sea ice concentration
Bulletin date: 2021-11-11
Model vs. observations, sea ice class contingency tables
Date: 2021-11-05:
| 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 |
18873 |
7326 |
841 |
461 |
111 |
82 |
58 |
0 |
| OW |
0 |
85 |
252 |
121 |
42 |
52 |
37 |
0 |
| VODI |
0 |
34 |
135 |
162 |
52 |
71 |
50 |
0 |
| ODI |
0 |
8 |
25 |
152 |
75 |
85 |
67 |
3 |
| CDI |
0 |
1 |
10 |
132 |
86 |
201 |
209 |
12 |
| VCDI |
0 |
2 |
2 |
74 |
121 |
428 |
4038 |
3583 |
|
...date precedes bulletin
|
Date: 2021-11-09:
| 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 |
18577 |
6885 |
827 |
619 |
122 |
50 |
21 |
0 |
| OW |
0 |
44 |
127 |
156 |
97 |
48 |
46 |
0 |
| VODI |
0 |
10 |
104 |
181 |
108 |
106 |
105 |
0 |
| ODI |
0 |
2 |
18 |
86 |
111 |
108 |
128 |
0 |
| CDI |
0 |
1 |
4 |
39 |
63 |
278 |
247 |
0 |
| VCDI |
0 |
0 |
1 |
16 |
55 |
421 |
4168 |
4180 |
|
...date precedes bulletin
|
Date: 2021-11-11:
| 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 |
18138 |
6974 |
1015 |
372 |
204 |
99 |
18 |
0 |
| OW |
0 |
24 |
191 |
115 |
104 |
114 |
25 |
0 |
| VODI |
0 |
4 |
109 |
120 |
122 |
180 |
87 |
0 |
| ODI |
0 |
3 |
28 |
79 |
90 |
153 |
101 |
0 |
| CDI |
0 |
2 |
9 |
36 |
88 |
197 |
249 |
13 |
| VCDI |
0 |
0 |
1 |
21 |
83 |
319 |
4439 |
4233 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
18138 |
6977 |
1035 |
376 |
195 |
136 |
23 |
0 |
| OW |
0 |
21 |
169 |
119 |
106 |
82 |
33 |
0 |
| VODI |
0 |
4 |
105 |
111 |
128 |
169 |
69 |
0 |
| ODI |
0 |
3 |
34 |
69 |
76 |
147 |
89 |
0 |
| CDI |
0 |
2 |
9 |
47 |
94 |
183 |
235 |
16 |
| VCDI |
0 |
0 |
1 |
21 |
92 |
345 |
4470 |
4230 |
|
Date: 2021-11-15:
| 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 |
17091 |
6955 |
1155 |
372 |
255 |
165 |
44 |
0 |
| OW |
2 |
23 |
186 |
113 |
91 |
86 |
26 |
0 |
| VODI |
1 |
5 |
126 |
112 |
102 |
138 |
88 |
0 |
| ODI |
0 |
1 |
35 |
60 |
158 |
259 |
199 |
0 |
| CDI |
0 |
3 |
16 |
47 |
72 |
225 |
407 |
18 |
| VCDI |
0 |
1 |
0 |
24 |
86 |
234 |
5057 |
4121 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17092 |
6884 |
1024 |
344 |
232 |
171 |
47 |
0 |
| OW |
2 |
75 |
204 |
112 |
79 |
72 |
44 |
0 |
| VODI |
0 |
22 |
152 |
104 |
128 |
139 |
113 |
0 |
| ODI |
0 |
3 |
77 |
64 |
121 |
202 |
123 |
0 |
| CDI |
0 |
3 |
47 |
41 |
89 |
184 |
252 |
24 |
| VCDI |
0 |
1 |
14 |
63 |
115 |
339 |
5242 |
4115 |
|
Date: 2021-11-17:
| 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 |
15975 |
7812 |
1056 |
437 |
276 |
135 |
63 |
0 |
| OW |
0 |
33 |
151 |
110 |
131 |
82 |
27 |
0 |
| VODI |
0 |
10 |
101 |
125 |
157 |
131 |
74 |
0 |
| ODI |
0 |
3 |
42 |
70 |
130 |
145 |
163 |
0 |
| CDI |
0 |
3 |
40 |
51 |
105 |
334 |
303 |
2 |
| VCDI |
0 |
3 |
20 |
48 |
105 |
405 |
4840 |
4461 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15975 |
7705 |
918 |
371 |
261 |
127 |
46 |
0 |
| OW |
0 |
79 |
141 |
108 |
136 |
87 |
24 |
0 |
| VODI |
0 |
41 |
120 |
153 |
164 |
139 |
103 |
0 |
| ODI |
0 |
14 |
71 |
67 |
69 |
109 |
133 |
0 |
| CDI |
0 |
22 |
76 |
56 |
99 |
241 |
278 |
0 |
| VCDI |
0 |
3 |
84 |
86 |
175 |
529 |
4886 |
4463 |
|
Date: 2021-11-19:
| 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 |
16288 |
7622 |
743 |
441 |
242 |
132 |
45 |
0 |
| OW |
0 |
104 |
109 |
109 |
98 |
98 |
49 |
0 |
| VODI |
0 |
75 |
74 |
101 |
77 |
146 |
104 |
0 |
| ODI |
0 |
23 |
48 |
59 |
98 |
135 |
190 |
0 |
| CDI |
0 |
28 |
24 |
66 |
106 |
182 |
307 |
37 |
| VCDI |
0 |
17 |
46 |
76 |
127 |
470 |
5047 |
4416 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16288 |
7380 |
626 |
329 |
191 |
132 |
45 |
0 |
| OW |
0 |
134 |
123 |
104 |
81 |
89 |
32 |
0 |
| VODI |
0 |
117 |
85 |
143 |
114 |
148 |
122 |
0 |
| ODI |
0 |
66 |
42 |
67 |
84 |
123 |
160 |
10 |
| CDI |
0 |
70 |
57 |
64 |
66 |
112 |
210 |
35 |
| VCDI |
0 |
102 |
111 |
145 |
212 |
559 |
5173 |
4408 |
|
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