Validation of sea ice concentration
Bulletin date: 2022-10-27
Model vs. observations, sea ice class contingency tables
Date: 2022-10-21:
| 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 |
23556 |
5306 |
678 |
169 |
87 |
143 |
11 |
0 |
| OW |
6 |
30 |
110 |
87 |
47 |
40 |
21 |
0 |
| VODI |
0 |
2 |
62 |
61 |
65 |
53 |
15 |
0 |
| ODI |
0 |
0 |
21 |
45 |
28 |
65 |
14 |
0 |
| CDI |
0 |
1 |
8 |
51 |
64 |
103 |
49 |
0 |
| VCDI |
0 |
0 |
7 |
18 |
107 |
278 |
3514 |
3237 |
|
...date precedes bulletin
|
Date: 2022-10-25:
| 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 |
22994 |
5606 |
579 |
306 |
105 |
72 |
17 |
0 |
| OW |
27 |
10 |
81 |
86 |
50 |
41 |
32 |
0 |
| VODI |
0 |
0 |
54 |
65 |
66 |
90 |
58 |
0 |
| ODI |
0 |
0 |
19 |
63 |
30 |
75 |
55 |
0 |
| CDI |
0 |
0 |
7 |
44 |
57 |
94 |
99 |
1 |
| VCDI |
0 |
0 |
4 |
14 |
59 |
163 |
3246 |
3790 |
|
...date precedes bulletin
|
Date: 2022-10-27:
| 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 |
23140 |
5154 |
395 |
278 |
110 |
58 |
61 |
0 |
| OW |
206 |
78 |
90 |
89 |
29 |
37 |
45 |
0 |
| VODI |
5 |
17 |
51 |
91 |
63 |
81 |
63 |
0 |
| ODI |
0 |
8 |
14 |
49 |
33 |
90 |
64 |
0 |
| CDI |
0 |
2 |
4 |
53 |
71 |
122 |
123 |
0 |
| VCDI |
0 |
0 |
0 |
12 |
48 |
192 |
3768 |
3365 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
23262 |
5192 |
415 |
279 |
116 |
63 |
70 |
0 |
| OW |
84 |
38 |
68 |
83 |
22 |
28 |
32 |
0 |
| VODI |
5 |
18 |
54 |
98 |
54 |
68 |
70 |
0 |
| ODI |
0 |
7 |
12 |
45 |
36 |
80 |
53 |
0 |
| CDI |
0 |
4 |
4 |
52 |
75 |
134 |
113 |
0 |
| VCDI |
0 |
0 |
1 |
15 |
51 |
207 |
3786 |
3365 |
|
Date: 2022-10-31:
| 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 |
22367 |
5468 |
494 |
343 |
106 |
129 |
26 |
0 |
| OW |
102 |
40 |
56 |
162 |
117 |
23 |
12 |
0 |
| VODI |
37 |
27 |
31 |
106 |
86 |
71 |
13 |
0 |
| ODI |
0 |
20 |
8 |
36 |
80 |
146 |
47 |
0 |
| CDI |
0 |
28 |
18 |
41 |
57 |
280 |
148 |
0 |
| VCDI |
0 |
31 |
47 |
41 |
60 |
577 |
3883 |
2795 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
22250 |
5378 |
446 |
421 |
215 |
153 |
41 |
0 |
| OW |
234 |
79 |
72 |
93 |
35 |
59 |
12 |
0 |
| VODI |
22 |
44 |
32 |
54 |
54 |
87 |
32 |
0 |
| ODI |
0 |
28 |
25 |
45 |
51 |
107 |
43 |
0 |
| CDI |
0 |
33 |
22 |
46 |
60 |
170 |
112 |
0 |
| VCDI |
0 |
52 |
57 |
70 |
91 |
650 |
3889 |
2795 |
|
Date: 2022-11-02:
| 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 |
20963 |
6174 |
850 |
250 |
197 |
87 |
48 |
0 |
| OW |
0 |
122 |
143 |
115 |
201 |
82 |
17 |
0 |
| VODI |
0 |
36 |
57 |
60 |
117 |
132 |
57 |
0 |
| ODI |
0 |
13 |
13 |
24 |
31 |
83 |
107 |
0 |
| CDI |
0 |
10 |
31 |
26 |
31 |
96 |
268 |
0 |
| VCDI |
0 |
0 |
51 |
40 |
55 |
381 |
4194 |
2997 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20963 |
6017 |
688 |
232 |
268 |
125 |
62 |
0 |
| OW |
0 |
242 |
246 |
106 |
158 |
104 |
32 |
0 |
| VODI |
0 |
46 |
74 |
35 |
61 |
77 |
94 |
0 |
| ODI |
0 |
25 |
34 |
24 |
23 |
62 |
110 |
0 |
| CDI |
0 |
21 |
32 |
50 |
48 |
86 |
231 |
0 |
| VCDI |
0 |
4 |
71 |
68 |
74 |
407 |
4162 |
2997 |
|
Date: 2022-11-04:
| 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 |
20792 |
6202 |
571 |
174 |
108 |
106 |
42 |
0 |
| OW |
0 |
159 |
196 |
197 |
297 |
98 |
20 |
0 |
| VODI |
0 |
35 |
49 |
94 |
105 |
227 |
24 |
0 |
| ODI |
0 |
18 |
17 |
23 |
43 |
130 |
97 |
0 |
| CDI |
0 |
14 |
22 |
28 |
54 |
141 |
186 |
0 |
| VCDI |
0 |
21 |
60 |
36 |
82 |
301 |
3855 |
3535 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20792 |
6035 |
473 |
177 |
152 |
146 |
59 |
0 |
| OW |
0 |
260 |
209 |
171 |
265 |
208 |
22 |
0 |
| VODI |
0 |
61 |
88 |
61 |
64 |
167 |
90 |
0 |
| ODI |
0 |
30 |
40 |
35 |
30 |
43 |
110 |
0 |
| CDI |
0 |
20 |
33 |
59 |
74 |
126 |
170 |
0 |
| VCDI |
0 |
43 |
72 |
49 |
104 |
313 |
3773 |
3535 |
|
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