Validation of sea ice concentration
Bulletin date: 2024-01-18
Model vs. observations, sea ice class contingency tables
Date: 2024-01-12:
| 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 |
12159 |
6173 |
915 |
450 |
252 |
142 |
29 |
0 |
| OW |
0 |
54 |
123 |
98 |
91 |
104 |
24 |
0 |
| VODI |
0 |
36 |
100 |
108 |
92 |
131 |
72 |
0 |
| ODI |
0 |
11 |
60 |
77 |
91 |
116 |
114 |
3 |
| CDI |
0 |
4 |
26 |
62 |
91 |
190 |
350 |
12 |
| VCDI |
0 |
1 |
13 |
46 |
99 |
266 |
7381 |
7993 |
|
...date precedes bulletin
|
Date: 2024-01-16:
| 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 |
11725 |
6073 |
994 |
505 |
218 |
147 |
20 |
0 |
| OW |
0 |
20 |
157 |
118 |
83 |
55 |
12 |
0 |
| VODI |
0 |
5 |
102 |
123 |
134 |
125 |
29 |
0 |
| ODI |
0 |
0 |
57 |
72 |
101 |
159 |
64 |
3 |
| CDI |
0 |
0 |
34 |
71 |
128 |
200 |
251 |
10 |
| VCDI |
0 |
0 |
11 |
87 |
260 |
580 |
8429 |
6997 |
|
...date precedes bulletin
|
Date: 2024-01-18:
| 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 |
12157 |
5913 |
766 |
442 |
140 |
113 |
6 |
0 |
| OW |
0 |
88 |
88 |
105 |
77 |
67 |
13 |
0 |
| VODI |
0 |
56 |
70 |
145 |
103 |
113 |
21 |
0 |
| ODI |
0 |
43 |
46 |
79 |
68 |
130 |
69 |
7 |
| CDI |
0 |
34 |
48 |
101 |
98 |
163 |
248 |
87 |
| VCDI |
0 |
13 |
65 |
202 |
217 |
454 |
8597 |
6907 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12157 |
5895 |
781 |
447 |
154 |
131 |
7 |
0 |
| OW |
0 |
100 |
78 |
97 |
61 |
56 |
14 |
0 |
| VODI |
0 |
62 |
62 |
131 |
97 |
101 |
24 |
0 |
| ODI |
0 |
42 |
47 |
84 |
72 |
120 |
59 |
8 |
| CDI |
0 |
32 |
44 |
97 |
95 |
163 |
237 |
89 |
| VCDI |
0 |
16 |
71 |
218 |
224 |
469 |
8613 |
6904 |
|
Date: 2024-01-22:
| 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 |
12554 |
5903 |
759 |
400 |
112 |
81 |
31 |
0 |
| OW |
0 |
133 |
84 |
114 |
64 |
43 |
18 |
0 |
| VODI |
0 |
53 |
74 |
148 |
94 |
58 |
25 |
1 |
| ODI |
0 |
19 |
58 |
96 |
107 |
108 |
42 |
2 |
| CDI |
0 |
5 |
57 |
78 |
100 |
309 |
260 |
45 |
| VCDI |
0 |
0 |
49 |
138 |
172 |
1306 |
7688 |
6771 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12554 |
5621 |
709 |
343 |
110 |
103 |
53 |
0 |
| OW |
0 |
155 |
68 |
120 |
45 |
35 |
24 |
0 |
| VODI |
0 |
130 |
46 |
113 |
93 |
67 |
45 |
2 |
| ODI |
0 |
69 |
43 |
118 |
108 |
78 |
57 |
3 |
| CDI |
0 |
63 |
36 |
63 |
99 |
275 |
226 |
39 |
| VCDI |
0 |
75 |
179 |
217 |
194 |
1347 |
7659 |
6775 |
|
Date: 2024-01-24:
| 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 |
12990 |
5591 |
676 |
355 |
113 |
38 |
2 |
0 |
| OW |
0 |
181 |
95 |
99 |
64 |
33 |
6 |
0 |
| VODI |
0 |
143 |
99 |
147 |
108 |
81 |
35 |
0 |
| ODI |
0 |
53 |
84 |
120 |
105 |
107 |
84 |
0 |
| CDI |
0 |
15 |
122 |
103 |
118 |
203 |
369 |
40 |
| VCDI |
0 |
0 |
76 |
196 |
228 |
897 |
8620 |
5763 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12990 |
5359 |
660 |
329 |
102 |
60 |
7 |
0 |
| OW |
0 |
171 |
73 |
104 |
48 |
45 |
10 |
0 |
| VODI |
0 |
157 |
75 |
134 |
100 |
61 |
48 |
0 |
| ODI |
0 |
101 |
61 |
112 |
131 |
159 |
101 |
0 |
| CDI |
0 |
87 |
66 |
90 |
133 |
220 |
265 |
18 |
| VCDI |
0 |
108 |
217 |
251 |
222 |
814 |
8685 |
5785 |
|
Date: 2024-01-26:
| 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 |
12950 |
5867 |
686 |
229 |
81 |
10 |
4 |
0 |
| OW |
0 |
198 |
137 |
104 |
55 |
13 |
7 |
0 |
| VODI |
0 |
113 |
145 |
203 |
80 |
47 |
29 |
0 |
| ODI |
0 |
54 |
112 |
231 |
109 |
55 |
82 |
4 |
| CDI |
0 |
35 |
104 |
202 |
142 |
183 |
369 |
68 |
| VCDI |
0 |
29 |
159 |
284 |
299 |
956 |
9579 |
4145 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12950 |
5647 |
688 |
244 |
94 |
19 |
10 |
0 |
| OW |
0 |
187 |
106 |
89 |
49 |
17 |
18 |
0 |
| VODI |
0 |
147 |
121 |
190 |
96 |
85 |
54 |
0 |
| ODI |
0 |
85 |
64 |
168 |
123 |
117 |
105 |
25 |
| CDI |
0 |
86 |
92 |
157 |
112 |
217 |
275 |
62 |
| VCDI |
0 |
144 |
272 |
405 |
292 |
809 |
9608 |
4130 |
|
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