Validation of sea ice concentration
Bulletin date: 2021-01-28
Model vs. observations, sea ice class contingency tables
Date: 2021-01-22:
| 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 |
14054 |
6319 |
693 |
339 |
67 |
109 |
4 |
0 |
| OW |
0 |
75 |
180 |
187 |
70 |
86 |
7 |
0 |
| VODI |
0 |
19 |
158 |
196 |
100 |
145 |
20 |
0 |
| ODI |
0 |
5 |
71 |
143 |
108 |
170 |
46 |
0 |
| CDI |
0 |
1 |
53 |
160 |
143 |
266 |
287 |
26 |
| VCDI |
0 |
0 |
18 |
86 |
262 |
904 |
8195 |
4387 |
|
...date precedes bulletin
|
Date: 2021-01-26:
| 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 |
14104 |
6132 |
585 |
333 |
97 |
27 |
8 |
0 |
| OW |
0 |
57 |
110 |
177 |
72 |
51 |
14 |
0 |
| VODI |
0 |
11 |
102 |
161 |
115 |
128 |
38 |
1 |
| ODI |
0 |
1 |
48 |
128 |
110 |
173 |
81 |
2 |
| CDI |
0 |
0 |
23 |
106 |
131 |
234 |
311 |
23 |
| VCDI |
0 |
0 |
2 |
97 |
206 |
1177 |
6861 |
6122 |
|
...date precedes bulletin
|
Date: 2021-01-28:
| 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 |
13365 |
6082 |
825 |
358 |
224 |
81 |
16 |
0 |
| OW |
0 |
54 |
147 |
110 |
107 |
84 |
29 |
0 |
| VODI |
0 |
9 |
118 |
112 |
133 |
160 |
45 |
0 |
| ODI |
0 |
0 |
48 |
77 |
117 |
206 |
80 |
0 |
| CDI |
0 |
0 |
25 |
74 |
104 |
303 |
236 |
60 |
| VCDI |
0 |
0 |
12 |
78 |
121 |
756 |
7064 |
6739 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13365 |
6101 |
864 |
371 |
242 |
83 |
16 |
0 |
| OW |
0 |
36 |
116 |
104 |
88 |
74 |
30 |
0 |
| VODI |
0 |
7 |
121 |
111 |
141 |
150 |
52 |
0 |
| ODI |
0 |
1 |
43 |
82 |
122 |
223 |
75 |
0 |
| CDI |
0 |
0 |
22 |
70 |
100 |
327 |
254 |
61 |
| VCDI |
0 |
0 |
9 |
71 |
113 |
733 |
7043 |
6738 |
|
Date: 2021-02-01:
| 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 |
12903 |
6136 |
972 |
389 |
173 |
105 |
11 |
0 |
| OW |
0 |
29 |
144 |
132 |
88 |
90 |
12 |
0 |
| VODI |
0 |
11 |
92 |
160 |
146 |
160 |
34 |
1 |
| ODI |
0 |
5 |
56 |
116 |
160 |
242 |
100 |
16 |
| CDI |
0 |
1 |
46 |
62 |
103 |
307 |
395 |
128 |
| VCDI |
0 |
0 |
9 |
97 |
144 |
422 |
8259 |
5703 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12903 |
6031 |
880 |
361 |
188 |
150 |
16 |
0 |
| OW |
0 |
84 |
147 |
110 |
73 |
87 |
16 |
0 |
| VODI |
0 |
46 |
116 |
158 |
140 |
160 |
50 |
1 |
| ODI |
0 |
14 |
65 |
113 |
123 |
202 |
112 |
10 |
| CDI |
0 |
6 |
60 |
78 |
109 |
280 |
358 |
121 |
| VCDI |
0 |
1 |
51 |
136 |
181 |
447 |
8259 |
5716 |
|
Date: 2021-02-03:
| 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 |
12753 |
6182 |
846 |
469 |
169 |
60 |
9 |
0 |
| OW |
0 |
85 |
106 |
105 |
107 |
87 |
23 |
0 |
| VODI |
0 |
29 |
98 |
133 |
100 |
160 |
44 |
1 |
| ODI |
0 |
10 |
64 |
126 |
140 |
194 |
93 |
35 |
| CDI |
0 |
3 |
58 |
111 |
125 |
249 |
333 |
127 |
| VCDI |
0 |
2 |
86 |
179 |
261 |
553 |
8471 |
5373 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12753 |
6117 |
772 |
462 |
198 |
99 |
40 |
0 |
| OW |
0 |
93 |
120 |
100 |
83 |
91 |
49 |
0 |
| VODI |
0 |
63 |
117 |
110 |
101 |
178 |
106 |
1 |
| ODI |
0 |
19 |
70 |
122 |
103 |
177 |
190 |
7 |
| CDI |
0 |
13 |
65 |
106 |
128 |
222 |
334 |
80 |
| VCDI |
0 |
6 |
114 |
223 |
289 |
536 |
8254 |
5448 |
|
Date: 2021-02-05:
| 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 |
12760 |
5973 |
777 |
471 |
235 |
94 |
10 |
0 |
| OW |
0 |
34 |
103 |
119 |
113 |
124 |
18 |
0 |
| VODI |
0 |
13 |
84 |
103 |
109 |
187 |
37 |
1 |
| ODI |
0 |
6 |
40 |
81 |
137 |
216 |
65 |
6 |
| CDI |
0 |
5 |
28 |
86 |
172 |
377 |
195 |
51 |
| VCDI |
0 |
0 |
57 |
119 |
196 |
819 |
7896 |
6242 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12760 |
5912 |
727 |
444 |
234 |
141 |
27 |
0 |
| OW |
0 |
58 |
93 |
129 |
100 |
129 |
24 |
0 |
| VODI |
0 |
40 |
79 |
105 |
120 |
206 |
50 |
2 |
| ODI |
0 |
13 |
48 |
73 |
123 |
248 |
87 |
4 |
| CDI |
0 |
4 |
59 |
73 |
172 |
322 |
332 |
105 |
| VCDI |
0 |
4 |
83 |
155 |
213 |
771 |
7701 |
6189 |
|
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