Validation of sea ice concentration
Bulletin date: 2022-10-06
Model vs. observations, sea ice class contingency tables
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 |
|
...date precedes bulletin
|
Date: 2022-10-04:
| 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 |
24374 |
5520 |
836 |
273 |
71 |
27 |
1 |
0 |
| OW |
0 |
18 |
59 |
84 |
48 |
22 |
3 |
0 |
| VODI |
0 |
9 |
27 |
72 |
71 |
66 |
8 |
0 |
| ODI |
0 |
5 |
9 |
28 |
51 |
143 |
41 |
0 |
| CDI |
0 |
1 |
7 |
24 |
56 |
219 |
344 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
7 |
104 |
2524 |
3006 |
|
...date precedes bulletin
|
Date: 2022-10-06:
| 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 |
24404 |
5451 |
780 |
295 |
111 |
14 |
3 |
0 |
| OW |
0 |
9 |
106 |
72 |
46 |
11 |
4 |
0 |
| VODI |
0 |
8 |
69 |
76 |
65 |
35 |
11 |
0 |
| ODI |
0 |
0 |
44 |
44 |
62 |
44 |
24 |
0 |
| CDI |
0 |
0 |
31 |
54 |
137 |
124 |
168 |
0 |
| VCDI |
0 |
0 |
0 |
15 |
72 |
178 |
2486 |
3106 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24404 |
5458 |
816 |
313 |
118 |
16 |
3 |
0 |
| OW |
0 |
5 |
90 |
59 |
40 |
10 |
4 |
0 |
| VODI |
0 |
5 |
65 |
65 |
62 |
38 |
12 |
0 |
| ODI |
0 |
0 |
36 |
53 |
70 |
44 |
28 |
0 |
| CDI |
0 |
0 |
23 |
52 |
136 |
125 |
180 |
0 |
| VCDI |
0 |
0 |
0 |
14 |
67 |
173 |
2469 |
3106 |
|
Date: 2022-10-10:
| 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 |
24051 |
5808 |
714 |
214 |
108 |
72 |
9 |
0 |
| OW |
1 |
25 |
82 |
41 |
15 |
18 |
0 |
0 |
| VODI |
0 |
5 |
67 |
37 |
48 |
29 |
1 |
0 |
| ODI |
0 |
0 |
35 |
37 |
39 |
52 |
12 |
0 |
| CDI |
0 |
0 |
32 |
43 |
58 |
126 |
136 |
0 |
| VCDI |
0 |
0 |
0 |
6 |
33 |
292 |
3068 |
2845 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24052 |
5779 |
613 |
197 |
99 |
72 |
9 |
0 |
| OW |
0 |
34 |
87 |
31 |
19 |
25 |
0 |
0 |
| VODI |
0 |
24 |
96 |
32 |
22 |
30 |
0 |
0 |
| ODI |
0 |
1 |
63 |
34 |
39 |
41 |
10 |
0 |
| CDI |
0 |
0 |
57 |
52 |
55 |
79 |
62 |
0 |
| VCDI |
0 |
0 |
14 |
32 |
67 |
342 |
3145 |
2845 |
|
Date: 2022-10-12:
| 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 |
24552 |
5427 |
469 |
161 |
184 |
43 |
12 |
0 |
| OW |
1 |
55 |
57 |
43 |
13 |
16 |
3 |
0 |
| VODI |
0 |
46 |
28 |
56 |
28 |
23 |
3 |
0 |
| ODI |
0 |
20 |
25 |
29 |
37 |
32 |
12 |
0 |
| CDI |
0 |
34 |
20 |
41 |
50 |
118 |
63 |
0 |
| VCDI |
0 |
3 |
17 |
29 |
47 |
239 |
3125 |
2998 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24553 |
5334 |
447 |
122 |
160 |
31 |
12 |
0 |
| OW |
0 |
75 |
53 |
48 |
31 |
25 |
2 |
0 |
| VODI |
0 |
62 |
34 |
59 |
28 |
29 |
4 |
0 |
| ODI |
0 |
46 |
24 |
42 |
32 |
26 |
16 |
0 |
| CDI |
0 |
47 |
36 |
45 |
53 |
84 |
54 |
0 |
| VCDI |
0 |
21 |
22 |
43 |
55 |
276 |
3130 |
2998 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24471 |
5294 |
453 |
98 |
68 |
85 |
61 |
0 |
| OW |
0 |
72 |
60 |
33 |
26 |
33 |
17 |
0 |
| VODI |
0 |
53 |
58 |
65 |
31 |
24 |
16 |
0 |
| ODI |
0 |
27 |
32 |
37 |
48 |
31 |
18 |
0 |
| CDI |
0 |
24 |
30 |
37 |
39 |
95 |
75 |
0 |
| VCDI |
0 |
13 |
21 |
38 |
49 |
210 |
3193 |
3124 |
|
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