Validation of sea ice concentration
Bulletin date: 2022-09-29
Model vs. observations, sea ice class contingency tables
Date: 2022-09-23:
| 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 |
23458 |
5616 |
1346 |
239 |
180 |
60 |
5 |
0 |
| OW |
0 |
1 |
111 |
47 |
54 |
57 |
16 |
0 |
| VODI |
0 |
0 |
65 |
45 |
57 |
170 |
27 |
0 |
| ODI |
0 |
0 |
26 |
20 |
69 |
236 |
77 |
0 |
| CDI |
0 |
0 |
2 |
11 |
36 |
215 |
360 |
5 |
| VCDI |
0 |
0 |
0 |
19 |
81 |
129 |
2347 |
2972 |
|
...date precedes bulletin
|
Date: 2022-09-27:
| 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 |
24509 |
5882 |
502 |
375 |
33 |
4 |
4 |
0 |
| OW |
0 |
55 |
70 |
110 |
33 |
13 |
4 |
0 |
| VODI |
0 |
17 |
41 |
145 |
82 |
44 |
10 |
0 |
| ODI |
0 |
5 |
11 |
63 |
104 |
86 |
55 |
0 |
| CDI |
0 |
6 |
14 |
46 |
105 |
246 |
671 |
0 |
| VCDI |
0 |
0 |
0 |
14 |
48 |
110 |
2380 |
2262 |
|
...date precedes bulletin
|
Date: 2022-09-29:
| 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 |
24230 |
5722 |
845 |
289 |
93 |
38 |
0 |
0 |
| OW |
0 |
25 |
86 |
72 |
70 |
43 |
1 |
0 |
| VODI |
0 |
10 |
45 |
51 |
82 |
100 |
8 |
0 |
| ODI |
0 |
5 |
18 |
23 |
97 |
130 |
37 |
0 |
| CDI |
0 |
2 |
17 |
49 |
98 |
359 |
424 |
0 |
| VCDI |
0 |
0 |
1 |
6 |
47 |
155 |
2529 |
2352 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24230 |
5713 |
863 |
294 |
100 |
48 |
0 |
0 |
| OW |
0 |
27 |
74 |
71 |
60 |
38 |
1 |
0 |
| VODI |
0 |
14 |
35 |
52 |
80 |
94 |
6 |
0 |
| ODI |
0 |
5 |
21 |
14 |
100 |
140 |
39 |
0 |
| CDI |
0 |
5 |
17 |
51 |
101 |
343 |
425 |
0 |
| VCDI |
0 |
0 |
2 |
8 |
46 |
162 |
2528 |
2352 |
|
Date: 2022-10-03:
| 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 |
24322 |
5535 |
902 |
261 |
81 |
6 |
2 |
0 |
| OW |
0 |
27 |
88 |
73 |
47 |
11 |
0 |
0 |
| VODI |
0 |
13 |
82 |
65 |
47 |
52 |
13 |
0 |
| ODI |
0 |
7 |
18 |
39 |
119 |
106 |
30 |
0 |
| CDI |
0 |
6 |
28 |
26 |
68 |
210 |
407 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
12 |
122 |
2364 |
2970 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24322 |
5462 |
870 |
276 |
83 |
10 |
2 |
0 |
| OW |
0 |
62 |
69 |
50 |
39 |
10 |
0 |
0 |
| VODI |
0 |
37 |
77 |
61 |
60 |
44 |
12 |
0 |
| ODI |
0 |
14 |
42 |
30 |
80 |
83 |
32 |
0 |
| CDI |
0 |
13 |
43 |
33 |
91 |
208 |
251 |
0 |
| VCDI |
0 |
0 |
17 |
14 |
21 |
152 |
2519 |
2970 |
|
Date: 2022-10-05:
| 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 |
24415 |
5451 |
732 |
374 |
111 |
24 |
0 |
0 |
| OW |
0 |
10 |
79 |
80 |
57 |
20 |
0 |
0 |
| VODI |
0 |
4 |
52 |
59 |
80 |
57 |
3 |
0 |
| ODI |
0 |
0 |
23 |
43 |
93 |
56 |
30 |
0 |
| CDI |
0 |
0 |
9 |
35 |
101 |
209 |
201 |
0 |
| VCDI |
0 |
0 |
0 |
3 |
8 |
128 |
2550 |
3062 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24415 |
5376 |
655 |
356 |
113 |
30 |
0 |
0 |
| OW |
0 |
51 |
66 |
56 |
36 |
12 |
0 |
0 |
| VODI |
0 |
32 |
85 |
61 |
80 |
28 |
3 |
0 |
| ODI |
0 |
6 |
43 |
46 |
74 |
41 |
15 |
0 |
| CDI |
0 |
0 |
38 |
48 |
116 |
197 |
153 |
0 |
| VCDI |
0 |
0 |
8 |
27 |
31 |
186 |
2613 |
3062 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24466 |
5394 |
603 |
278 |
93 |
22 |
6 |
0 |
| OW |
0 |
76 |
61 |
38 |
17 |
6 |
6 |
0 |
| VODI |
0 |
73 |
82 |
65 |
45 |
11 |
5 |
0 |
| ODI |
0 |
18 |
67 |
52 |
55 |
34 |
9 |
0 |
| CDI |
0 |
3 |
61 |
64 |
131 |
114 |
93 |
0 |
| VCDI |
0 |
0 |
11 |
30 |
102 |
267 |
2590 |
3111 |
|
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