Validation of sea ice concentration
Bulletin date: 2022-10-20
Model vs. observations, sea ice class contingency tables
Date: 2022-10-14:
| 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 |
24470 |
5343 |
485 |
95 |
75 |
105 |
70 |
0 |
| OW |
1 |
61 |
75 |
56 |
19 |
12 |
14 |
0 |
| VODI |
0 |
42 |
38 |
64 |
40 |
22 |
8 |
0 |
| ODI |
0 |
19 |
20 |
35 |
36 |
39 |
13 |
0 |
| CDI |
0 |
17 |
25 |
27 |
47 |
81 |
86 |
0 |
| VCDI |
0 |
1 |
11 |
31 |
44 |
219 |
3189 |
3124 |
|
...date precedes bulletin
|
Date: 2022-10-18:
| 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 |
23920 |
5255 |
561 |
219 |
132 |
128 |
55 |
0 |
| OW |
0 |
45 |
56 |
48 |
60 |
30 |
9 |
0 |
| VODI |
0 |
15 |
39 |
39 |
62 |
64 |
10 |
0 |
| ODI |
0 |
5 |
24 |
23 |
44 |
93 |
15 |
0 |
| CDI |
0 |
6 |
28 |
29 |
72 |
155 |
95 |
0 |
| VCDI |
0 |
1 |
9 |
14 |
52 |
337 |
3108 |
3302 |
|
...date precedes bulletin
|
Date: 2022-10-20:
| 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 |
23706 |
5128 |
771 |
183 |
104 |
181 |
11 |
0 |
| OW |
5 |
23 |
81 |
70 |
50 |
48 |
6 |
0 |
| VODI |
0 |
8 |
41 |
70 |
44 |
61 |
12 |
0 |
| ODI |
0 |
5 |
19 |
48 |
41 |
58 |
19 |
0 |
| CDI |
0 |
1 |
9 |
42 |
60 |
91 |
80 |
0 |
| VCDI |
0 |
2 |
15 |
25 |
83 |
326 |
3267 |
3365 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
23704 |
5135 |
782 |
189 |
109 |
190 |
13 |
0 |
| OW |
7 |
17 |
64 |
62 |
45 |
36 |
4 |
0 |
| VODI |
0 |
7 |
51 |
71 |
47 |
62 |
12 |
0 |
| ODI |
0 |
5 |
15 |
48 |
38 |
51 |
19 |
0 |
| CDI |
0 |
2 |
11 |
44 |
66 |
91 |
63 |
0 |
| VCDI |
0 |
1 |
13 |
24 |
77 |
335 |
3284 |
3365 |
|
Date: 2022-10-24:
| 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 |
23152 |
5660 |
496 |
270 |
94 |
96 |
1 |
0 |
| OW |
5 |
19 |
69 |
97 |
69 |
62 |
6 |
0 |
| VODI |
0 |
0 |
43 |
72 |
71 |
126 |
36 |
0 |
| ODI |
0 |
0 |
18 |
62 |
25 |
71 |
56 |
0 |
| CDI |
0 |
0 |
7 |
44 |
58 |
104 |
89 |
0 |
| VCDI |
0 |
0 |
2 |
20 |
58 |
293 |
3812 |
2996 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
23142 |
5617 |
455 |
263 |
121 |
208 |
3 |
0 |
| OW |
15 |
48 |
64 |
72 |
31 |
32 |
9 |
0 |
| VODI |
0 |
14 |
64 |
65 |
60 |
52 |
42 |
0 |
| ODI |
0 |
0 |
28 |
66 |
30 |
49 |
35 |
0 |
| CDI |
0 |
0 |
19 |
64 |
61 |
97 |
75 |
0 |
| VCDI |
0 |
0 |
5 |
35 |
72 |
314 |
3836 |
2996 |
|
Date: 2022-10-26:
| 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 |
23239 |
5164 |
554 |
233 |
119 |
102 |
28 |
0 |
| OW |
125 |
12 |
109 |
77 |
40 |
58 |
26 |
0 |
| VODI |
2 |
8 |
30 |
87 |
65 |
96 |
64 |
0 |
| ODI |
0 |
4 |
19 |
39 |
38 |
88 |
67 |
0 |
| CDI |
0 |
0 |
7 |
38 |
65 |
91 |
94 |
1 |
| VCDI |
0 |
0 |
1 |
14 |
62 |
217 |
3307 |
3769 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
23239 |
5095 |
518 |
224 |
122 |
161 |
57 |
0 |
| OW |
121 |
69 |
104 |
67 |
34 |
39 |
38 |
0 |
| VODI |
6 |
13 |
48 |
77 |
47 |
54 |
50 |
0 |
| ODI |
0 |
6 |
33 |
49 |
41 |
81 |
51 |
0 |
| CDI |
0 |
5 |
13 |
49 |
76 |
118 |
86 |
1 |
| VCDI |
0 |
0 |
4 |
22 |
69 |
199 |
3304 |
3769 |
|
Date: 2022-10-28:
| 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 |
22812 |
5270 |
349 |
278 |
142 |
57 |
64 |
0 |
| OW |
238 |
151 |
68 |
56 |
76 |
53 |
49 |
0 |
| VODI |
5 |
38 |
53 |
54 |
66 |
80 |
69 |
0 |
| ODI |
0 |
16 |
22 |
53 |
58 |
64 |
74 |
0 |
| CDI |
0 |
12 |
15 |
61 |
77 |
158 |
172 |
0 |
| VCDI |
0 |
0 |
13 |
16 |
37 |
221 |
3808 |
3254 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
22876 |
5256 |
355 |
294 |
162 |
100 |
109 |
0 |
| OW |
161 |
125 |
63 |
61 |
70 |
58 |
61 |
0 |
| VODI |
18 |
46 |
36 |
43 |
57 |
46 |
60 |
0 |
| ODI |
0 |
25 |
18 |
36 |
47 |
67 |
56 |
0 |
| CDI |
0 |
20 |
20 |
47 |
63 |
119 |
86 |
0 |
| VCDI |
0 |
15 |
28 |
37 |
57 |
243 |
3864 |
3254 |
|
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