Validation of sea ice concentration
Bulletin date: 2021-02-11
Model vs. observations, sea ice class contingency tables
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 |
|
...date precedes bulletin
|
Date: 2021-02-09:
| 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 |
12502 |
5927 |
651 |
555 |
172 |
81 |
15 |
0 |
| OW |
0 |
73 |
81 |
168 |
87 |
52 |
19 |
0 |
| VODI |
0 |
45 |
57 |
144 |
143 |
104 |
38 |
2 |
| ODI |
0 |
13 |
44 |
91 |
105 |
156 |
78 |
2 |
| CDI |
0 |
3 |
52 |
84 |
112 |
395 |
273 |
28 |
| VCDI |
0 |
2 |
28 |
117 |
169 |
1051 |
9410 |
5030 |
|
...date precedes bulletin
|
Date: 2021-02-11:
| 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 |
12303 |
5795 |
781 |
443 |
231 |
181 |
49 |
0 |
| OW |
0 |
29 |
99 |
110 |
73 |
111 |
40 |
0 |
| VODI |
0 |
8 |
58 |
112 |
108 |
142 |
89 |
0 |
| ODI |
0 |
0 |
27 |
66 |
81 |
139 |
111 |
1 |
| CDI |
0 |
0 |
16 |
59 |
86 |
218 |
342 |
8 |
| VCDI |
0 |
0 |
11 |
40 |
109 |
548 |
9640 |
5895 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12303 |
5792 |
783 |
449 |
236 |
187 |
50 |
0 |
| OW |
0 |
31 |
91 |
102 |
71 |
99 |
40 |
0 |
| VODI |
0 |
9 |
59 |
111 |
102 |
138 |
89 |
0 |
| ODI |
0 |
0 |
30 |
61 |
79 |
138 |
95 |
1 |
| CDI |
0 |
0 |
18 |
60 |
84 |
215 |
321 |
8 |
| VCDI |
0 |
0 |
11 |
47 |
116 |
562 |
9676 |
5895 |
|
Date: 2021-02-15:
| 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 |
12717 |
5763 |
638 |
493 |
171 |
118 |
40 |
0 |
| OW |
0 |
45 |
70 |
117 |
91 |
55 |
30 |
0 |
| VODI |
0 |
11 |
72 |
84 |
138 |
108 |
79 |
0 |
| ODI |
0 |
2 |
23 |
60 |
90 |
152 |
144 |
0 |
| CDI |
0 |
0 |
20 |
59 |
112 |
317 |
396 |
41 |
| VCDI |
0 |
0 |
12 |
34 |
86 |
322 |
7440 |
8009 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12717 |
5710 |
578 |
433 |
188 |
149 |
68 |
0 |
| OW |
0 |
72 |
65 |
109 |
65 |
61 |
43 |
0 |
| VODI |
0 |
28 |
78 |
90 |
93 |
102 |
118 |
0 |
| ODI |
0 |
7 |
56 |
70 |
80 |
112 |
121 |
0 |
| CDI |
0 |
4 |
30 |
96 |
135 |
252 |
375 |
31 |
| VCDI |
0 |
0 |
28 |
49 |
127 |
396 |
7404 |
8019 |
|
Date: 2021-02-17:
| 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 |
12933 |
5745 |
681 |
311 |
233 |
106 |
38 |
0 |
| OW |
0 |
37 |
103 |
95 |
99 |
71 |
28 |
0 |
| VODI |
0 |
11 |
94 |
80 |
118 |
115 |
59 |
0 |
| ODI |
0 |
4 |
43 |
51 |
88 |
102 |
129 |
0 |
| CDI |
0 |
4 |
37 |
69 |
126 |
249 |
455 |
31 |
| VCDI |
0 |
7 |
40 |
42 |
127 |
493 |
8748 |
6357 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12933 |
5668 |
570 |
272 |
242 |
164 |
75 |
0 |
| OW |
0 |
86 |
105 |
67 |
63 |
66 |
51 |
0 |
| VODI |
0 |
36 |
123 |
77 |
76 |
95 |
84 |
0 |
| ODI |
0 |
7 |
80 |
76 |
73 |
81 |
168 |
0 |
| CDI |
0 |
4 |
63 |
94 |
139 |
235 |
477 |
18 |
| VCDI |
0 |
7 |
57 |
62 |
198 |
495 |
8602 |
6370 |
|
Date: 2021-02-19:
| 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 |
13159 |
5693 |
638 |
282 |
188 |
91 |
29 |
0 |
| OW |
0 |
74 |
154 |
68 |
76 |
47 |
23 |
0 |
| VODI |
0 |
43 |
126 |
88 |
89 |
95 |
48 |
1 |
| ODI |
0 |
13 |
77 |
70 |
70 |
98 |
84 |
11 |
| CDI |
0 |
8 |
75 |
100 |
126 |
188 |
413 |
94 |
| VCDI |
0 |
28 |
96 |
78 |
181 |
467 |
7334 |
7536 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13159 |
5571 |
517 |
252 |
236 |
164 |
89 |
0 |
| OW |
0 |
119 |
131 |
43 |
44 |
62 |
41 |
0 |
| VODI |
0 |
77 |
154 |
67 |
52 |
84 |
78 |
2 |
| ODI |
0 |
32 |
113 |
78 |
49 |
68 |
104 |
3 |
| CDI |
0 |
18 |
143 |
124 |
118 |
163 |
473 |
39 |
| VCDI |
0 |
42 |
108 |
122 |
231 |
445 |
7146 |
7598 |
|
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