Validation of sea ice concentration
Bulletin date: 2022-10-13
Model vs. observations, sea ice class contingency tables
Date: 2022-10-07:
| 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 |
24466 |
5477 |
634 |
279 |
90 |
16 |
5 |
0 |
| OW |
0 |
58 |
99 |
54 |
23 |
8 |
2 |
0 |
| VODI |
0 |
24 |
68 |
76 |
47 |
31 |
7 |
0 |
| ODI |
0 |
5 |
46 |
47 |
58 |
46 |
16 |
0 |
| CDI |
0 |
0 |
36 |
63 |
108 |
112 |
99 |
0 |
| VCDI |
0 |
0 |
2 |
8 |
117 |
241 |
2580 |
3111 |
|
...date precedes bulletin
|
Date: 2022-10-11:
| 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 |
24097 |
5698 |
712 |
166 |
138 |
101 |
10 |
0 |
| OW |
1 |
28 |
58 |
43 |
16 |
16 |
3 |
0 |
| VODI |
0 |
10 |
51 |
53 |
40 |
31 |
2 |
0 |
| ODI |
0 |
6 |
23 |
24 |
40 |
61 |
11 |
0 |
| CDI |
0 |
0 |
30 |
32 |
53 |
142 |
76 |
0 |
| VCDI |
0 |
0 |
2 |
15 |
30 |
258 |
3085 |
2997 |
|
...date precedes bulletin
|
Date: 2022-10-13:
| 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 |
24528 |
5357 |
503 |
149 |
94 |
66 |
78 |
0 |
| OW |
1 |
87 |
40 |
43 |
18 |
16 |
9 |
0 |
| VODI |
0 |
55 |
22 |
46 |
32 |
25 |
9 |
0 |
| ODI |
0 |
35 |
21 |
22 |
32 |
34 |
13 |
0 |
| CDI |
0 |
38 |
27 |
26 |
46 |
90 |
75 |
0 |
| VCDI |
0 |
14 |
22 |
31 |
41 |
214 |
3201 |
2999 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24529 |
5361 |
515 |
165 |
103 |
74 |
81 |
0 |
| OW |
0 |
84 |
28 |
38 |
11 |
13 |
6 |
0 |
| VODI |
0 |
57 |
23 |
43 |
35 |
21 |
10 |
0 |
| ODI |
0 |
29 |
22 |
15 |
28 |
34 |
13 |
0 |
| CDI |
0 |
39 |
27 |
29 |
50 |
88 |
79 |
0 |
| VCDI |
0 |
16 |
20 |
27 |
36 |
215 |
3196 |
2999 |
|
Date: 2022-10-17:
| 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 |
23952 |
5295 |
609 |
196 |
140 |
109 |
66 |
0 |
| OW |
2 |
24 |
50 |
42 |
47 |
33 |
14 |
0 |
| VODI |
0 |
8 |
34 |
48 |
54 |
78 |
15 |
0 |
| ODI |
0 |
5 |
20 |
27 |
46 |
88 |
25 |
0 |
| CDI |
0 |
5 |
16 |
38 |
50 |
143 |
145 |
0 |
| VCDI |
0 |
0 |
3 |
16 |
44 |
271 |
3070 |
3331 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
23954 |
5258 |
585 |
197 |
150 |
134 |
75 |
0 |
| OW |
0 |
47 |
46 |
45 |
46 |
28 |
12 |
0 |
| VODI |
0 |
17 |
34 |
39 |
53 |
83 |
17 |
0 |
| ODI |
0 |
8 |
28 |
18 |
35 |
82 |
22 |
0 |
| CDI |
0 |
6 |
28 |
26 |
47 |
112 |
116 |
1 |
| VCDI |
0 |
1 |
11 |
42 |
50 |
283 |
3093 |
3330 |
|
Date: 2022-10-19:
| 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 |
23667 |
5247 |
685 |
244 |
157 |
163 |
15 |
0 |
| OW |
3 |
20 |
84 |
60 |
38 |
54 |
4 |
0 |
| VODI |
0 |
10 |
42 |
54 |
35 |
69 |
22 |
0 |
| ODI |
0 |
3 |
19 |
33 |
41 |
77 |
23 |
0 |
| CDI |
0 |
2 |
11 |
18 |
45 |
119 |
109 |
0 |
| VCDI |
0 |
0 |
13 |
15 |
67 |
369 |
3138 |
3384 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
23669 |
5209 |
663 |
227 |
145 |
181 |
18 |
0 |
| OW |
1 |
39 |
86 |
68 |
42 |
29 |
9 |
0 |
| VODI |
0 |
19 |
49 |
56 |
46 |
76 |
22 |
0 |
| ODI |
0 |
4 |
22 |
27 |
34 |
77 |
31 |
0 |
| CDI |
0 |
8 |
11 |
28 |
43 |
113 |
102 |
0 |
| VCDI |
0 |
3 |
23 |
18 |
73 |
375 |
3129 |
3384 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
23558 |
5294 |
675 |
171 |
82 |
171 |
26 |
0 |
| OW |
4 |
26 |
116 |
77 |
45 |
14 |
10 |
0 |
| VODI |
0 |
12 |
49 |
82 |
68 |
58 |
14 |
0 |
| ODI |
0 |
2 |
17 |
38 |
42 |
67 |
17 |
0 |
| CDI |
0 |
4 |
9 |
33 |
37 |
93 |
60 |
0 |
| VCDI |
0 |
1 |
20 |
30 |
124 |
279 |
3497 |
3237 |
|
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