Validation of sea ice concentration
Bulletin date: 2022-12-01
Model vs. observations, sea ice class contingency tables
Date: 2022-11-25:
| 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 |
17792 |
7224 |
623 |
296 |
118 |
87 |
103 |
0 |
| OW |
0 |
50 |
154 |
88 |
39 |
48 |
26 |
0 |
| VODI |
0 |
5 |
97 |
115 |
54 |
75 |
53 |
0 |
| ODI |
0 |
0 |
37 |
65 |
73 |
107 |
86 |
0 |
| CDI |
0 |
0 |
7 |
31 |
65 |
195 |
432 |
3 |
| VCDI |
0 |
0 |
10 |
38 |
35 |
359 |
5862 |
3707 |
|
...date precedes bulletin
|
Date: 2022-11-29:
| 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 |
18120 |
7267 |
477 |
268 |
149 |
112 |
127 |
0 |
| OW |
0 |
59 |
112 |
89 |
41 |
28 |
17 |
0 |
| VODI |
0 |
28 |
74 |
99 |
76 |
44 |
56 |
0 |
| ODI |
0 |
7 |
38 |
60 |
70 |
106 |
97 |
0 |
| CDI |
0 |
0 |
17 |
39 |
50 |
193 |
397 |
2 |
| VCDI |
0 |
0 |
13 |
57 |
66 |
204 |
5766 |
3734 |
|
...date precedes bulletin
|
Date: 2022-12-01:
| 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 |
17846 |
7263 |
638 |
245 |
201 |
223 |
123 |
0 |
| OW |
0 |
76 |
135 |
87 |
51 |
41 |
37 |
0 |
| VODI |
0 |
31 |
88 |
82 |
86 |
87 |
55 |
0 |
| ODI |
0 |
3 |
51 |
44 |
84 |
125 |
114 |
0 |
| CDI |
0 |
0 |
24 |
44 |
59 |
157 |
379 |
0 |
| VCDI |
0 |
0 |
11 |
49 |
81 |
258 |
5350 |
3931 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17846 |
7272 |
668 |
269 |
205 |
224 |
124 |
0 |
| OW |
0 |
66 |
112 |
75 |
59 |
38 |
37 |
0 |
| VODI |
0 |
28 |
74 |
68 |
71 |
82 |
53 |
0 |
| ODI |
0 |
6 |
48 |
47 |
72 |
128 |
111 |
0 |
| CDI |
0 |
1 |
33 |
39 |
69 |
162 |
420 |
0 |
| VCDI |
0 |
0 |
12 |
53 |
86 |
257 |
5313 |
3931 |
|
Date: 2022-12-05:
| 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 |
17143 |
7255 |
1037 |
403 |
284 |
166 |
121 |
0 |
| OW |
0 |
104 |
135 |
98 |
78 |
75 |
35 |
0 |
| VODI |
0 |
58 |
148 |
80 |
109 |
111 |
59 |
0 |
| ODI |
0 |
0 |
85 |
85 |
110 |
165 |
78 |
0 |
| CDI |
0 |
0 |
46 |
52 |
71 |
170 |
347 |
0 |
| VCDI |
0 |
0 |
36 |
38 |
84 |
236 |
5224 |
3833 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17143 |
7231 |
914 |
390 |
276 |
181 |
152 |
0 |
| OW |
0 |
117 |
172 |
62 |
67 |
57 |
17 |
0 |
| VODI |
0 |
67 |
198 |
89 |
81 |
77 |
37 |
0 |
| ODI |
0 |
2 |
100 |
68 |
93 |
118 |
53 |
0 |
| CDI |
0 |
0 |
39 |
65 |
95 |
148 |
240 |
3 |
| VCDI |
0 |
0 |
64 |
82 |
124 |
342 |
5365 |
3830 |
|
Date: 2022-12-07:
| 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 |
16892 |
7155 |
769 |
578 |
238 |
208 |
98 |
0 |
| OW |
0 |
84 |
134 |
113 |
89 |
48 |
28 |
0 |
| VODI |
0 |
29 |
144 |
145 |
114 |
109 |
40 |
0 |
| ODI |
0 |
12 |
78 |
70 |
96 |
154 |
56 |
0 |
| CDI |
0 |
0 |
42 |
53 |
57 |
201 |
197 |
2 |
| VCDI |
0 |
0 |
42 |
81 |
96 |
326 |
5660 |
3921 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16892 |
7106 |
688 |
536 |
191 |
193 |
115 |
0 |
| OW |
0 |
94 |
133 |
102 |
83 |
41 |
20 |
0 |
| VODI |
0 |
50 |
126 |
127 |
96 |
104 |
28 |
0 |
| ODI |
0 |
27 |
95 |
76 |
111 |
131 |
42 |
0 |
| CDI |
0 |
3 |
97 |
80 |
75 |
192 |
159 |
1 |
| VCDI |
0 |
0 |
70 |
119 |
134 |
385 |
5715 |
3922 |
|
Date: 2022-12-09:
| 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 |
16617 |
6972 |
816 |
405 |
286 |
259 |
134 |
0 |
| OW |
0 |
41 |
116 |
102 |
116 |
142 |
39 |
0 |
| VODI |
0 |
16 |
37 |
74 |
118 |
171 |
71 |
0 |
| ODI |
0 |
0 |
9 |
25 |
58 |
213 |
74 |
0 |
| CDI |
0 |
0 |
11 |
19 |
60 |
339 |
273 |
19 |
| VCDI |
0 |
0 |
0 |
1 |
19 |
418 |
5686 |
4403 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16617 |
6873 |
716 |
338 |
241 |
215 |
148 |
0 |
| OW |
0 |
108 |
133 |
124 |
79 |
83 |
35 |
0 |
| VODI |
0 |
42 |
72 |
70 |
129 |
176 |
27 |
0 |
| ODI |
0 |
4 |
30 |
34 |
84 |
180 |
51 |
0 |
| CDI |
0 |
2 |
15 |
29 |
63 |
298 |
238 |
10 |
| VCDI |
0 |
0 |
23 |
31 |
61 |
590 |
5778 |
4412 |
|
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