Validation of sea ice concentration
Bulletin date: 2022-09-22
Model vs. observations, sea ice class contingency tables
Date: 2022-09-16:
| 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 |
24150 |
5298 |
818 |
347 |
144 |
28 |
0 |
0 |
| OW |
0 |
1 |
66 |
144 |
63 |
36 |
2 |
0 |
| VODI |
0 |
0 |
29 |
110 |
132 |
72 |
15 |
0 |
| ODI |
0 |
0 |
13 |
46 |
130 |
190 |
98 |
0 |
| CDI |
0 |
0 |
0 |
11 |
87 |
312 |
1597 |
686 |
| VCDI |
0 |
0 |
0 |
5 |
17 |
27 |
1226 |
2259 |
|
...date precedes bulletin
|
Date: 2022-09-20:
| 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 |
24038 |
5357 |
886 |
373 |
99 |
32 |
3 |
0 |
| OW |
0 |
4 |
115 |
75 |
53 |
34 |
4 |
0 |
| VODI |
0 |
0 |
89 |
82 |
111 |
68 |
67 |
0 |
| ODI |
0 |
0 |
22 |
47 |
78 |
166 |
258 |
0 |
| CDI |
0 |
0 |
4 |
2 |
28 |
117 |
1192 |
109 |
| VCDI |
0 |
0 |
11 |
2 |
11 |
18 |
1328 |
3276 |
|
...date precedes bulletin
|
Date: 2022-09-22:
| 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 |
23668 |
5526 |
1150 |
251 |
153 |
66 |
21 |
0 |
| OW |
0 |
0 |
87 |
47 |
59 |
53 |
17 |
0 |
| VODI |
0 |
0 |
42 |
66 |
76 |
156 |
50 |
0 |
| ODI |
0 |
0 |
17 |
24 |
46 |
217 |
151 |
0 |
| CDI |
0 |
0 |
2 |
7 |
46 |
175 |
593 |
8 |
| VCDI |
0 |
0 |
0 |
19 |
59 |
130 |
2170 |
3007 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
23668 |
5525 |
1134 |
257 |
175 |
91 |
28 |
0 |
| OW |
0 |
1 |
107 |
33 |
40 |
41 |
24 |
0 |
| VODI |
0 |
0 |
41 |
72 |
79 |
169 |
40 |
0 |
| ODI |
0 |
0 |
13 |
26 |
51 |
205 |
175 |
0 |
| CDI |
0 |
0 |
3 |
8 |
38 |
165 |
680 |
15 |
| VCDI |
0 |
0 |
0 |
18 |
56 |
126 |
2055 |
3000 |
|
Date: 2022-09-26:
| 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 |
24312 |
5876 |
717 |
372 |
31 |
6 |
3 |
0 |
| OW |
0 |
39 |
83 |
102 |
35 |
12 |
6 |
0 |
| VODI |
0 |
5 |
53 |
123 |
134 |
43 |
10 |
0 |
| ODI |
0 |
1 |
15 |
55 |
121 |
134 |
47 |
0 |
| CDI |
0 |
0 |
8 |
26 |
69 |
252 |
694 |
0 |
| VCDI |
0 |
0 |
0 |
9 |
46 |
83 |
1759 |
2878 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24312 |
5695 |
637 |
339 |
31 |
2 |
0 |
0 |
| OW |
0 |
106 |
70 |
81 |
21 |
15 |
6 |
0 |
| VODI |
0 |
80 |
58 |
95 |
77 |
28 |
14 |
0 |
| ODI |
0 |
30 |
56 |
77 |
91 |
117 |
43 |
0 |
| CDI |
0 |
9 |
44 |
61 |
145 |
186 |
277 |
0 |
| VCDI |
0 |
1 |
11 |
34 |
71 |
182 |
2179 |
2878 |
|
Date: 2022-09-28:
| 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 |
24165 |
5781 |
890 |
360 |
82 |
6 |
0 |
0 |
| OW |
0 |
15 |
78 |
110 |
49 |
27 |
0 |
0 |
| VODI |
0 |
7 |
30 |
71 |
123 |
69 |
4 |
0 |
| ODI |
0 |
5 |
11 |
45 |
123 |
92 |
37 |
0 |
| CDI |
0 |
0 |
21 |
48 |
100 |
260 |
586 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
34 |
99 |
2593 |
2238 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24165 |
5647 |
767 |
297 |
66 |
0 |
0 |
0 |
| OW |
0 |
103 |
84 |
89 |
40 |
21 |
1 |
0 |
| VODI |
0 |
40 |
70 |
92 |
69 |
57 |
8 |
0 |
| ODI |
0 |
10 |
61 |
77 |
110 |
86 |
42 |
0 |
| CDI |
0 |
8 |
32 |
68 |
173 |
192 |
242 |
0 |
| VCDI |
0 |
0 |
16 |
11 |
53 |
197 |
2927 |
2238 |
|
Date: 2022-09-30:
| 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 |
24282 |
5641 |
801 |
331 |
73 |
11 |
0 |
0 |
| OW |
0 |
28 |
100 |
81 |
66 |
25 |
3 |
0 |
| VODI |
0 |
9 |
47 |
56 |
82 |
84 |
5 |
0 |
| ODI |
0 |
6 |
18 |
29 |
93 |
130 |
27 |
0 |
| CDI |
0 |
4 |
21 |
44 |
91 |
253 |
407 |
0 |
| VCDI |
0 |
0 |
4 |
24 |
38 |
163 |
2667 |
2415 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24282 |
5533 |
727 |
267 |
67 |
0 |
0 |
0 |
| OW |
0 |
80 |
68 |
78 |
45 |
21 |
1 |
0 |
| VODI |
0 |
53 |
73 |
80 |
66 |
63 |
8 |
0 |
| ODI |
0 |
10 |
65 |
34 |
65 |
106 |
32 |
0 |
| CDI |
0 |
9 |
37 |
84 |
151 |
275 |
215 |
0 |
| VCDI |
0 |
3 |
21 |
22 |
49 |
201 |
2853 |
2415 |
|
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