Validation of sea ice concentration
Bulletin date: 2022-12-15
Model vs. observations, sea ice class contingency tables
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 |
|
...date precedes bulletin
|
Date: 2022-12-13:
| 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 |
15716 |
6917 |
959 |
647 |
168 |
162 |
189 |
0 |
| OW |
0 |
49 |
111 |
194 |
77 |
72 |
47 |
0 |
| VODI |
0 |
8 |
51 |
216 |
182 |
181 |
65 |
0 |
| ODI |
0 |
0 |
6 |
92 |
143 |
216 |
92 |
0 |
| CDI |
0 |
0 |
2 |
54 |
73 |
274 |
268 |
55 |
| VCDI |
0 |
0 |
0 |
10 |
90 |
587 |
5364 |
4822 |
|
...date precedes bulletin
|
Date: 2022-12-15:
| 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 |
15390 |
7057 |
946 |
419 |
180 |
167 |
156 |
4 |
| OW |
0 |
53 |
192 |
155 |
76 |
101 |
62 |
0 |
| VODI |
0 |
9 |
86 |
160 |
101 |
184 |
76 |
0 |
| ODI |
0 |
1 |
10 |
58 |
76 |
205 |
139 |
0 |
| CDI |
0 |
0 |
2 |
30 |
45 |
205 |
386 |
15 |
| VCDI |
0 |
0 |
0 |
8 |
32 |
245 |
5793 |
5335 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15390 |
7036 |
976 |
462 |
191 |
181 |
174 |
4 |
| OW |
0 |
71 |
164 |
123 |
76 |
88 |
53 |
0 |
| VODI |
0 |
12 |
85 |
145 |
93 |
168 |
63 |
0 |
| ODI |
0 |
1 |
10 |
61 |
70 |
197 |
124 |
0 |
| CDI |
0 |
0 |
1 |
31 |
41 |
213 |
351 |
11 |
| VCDI |
0 |
0 |
0 |
8 |
39 |
260 |
5847 |
5339 |
|
Date: 2022-12-19:
| 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 |
15138 |
7127 |
1030 |
318 |
103 |
36 |
85 |
2 |
| OW |
0 |
77 |
246 |
137 |
93 |
30 |
64 |
0 |
| VODI |
0 |
13 |
217 |
193 |
131 |
60 |
57 |
0 |
| ODI |
0 |
1 |
80 |
139 |
149 |
111 |
99 |
0 |
| CDI |
0 |
0 |
50 |
63 |
102 |
178 |
381 |
8 |
| VCDI |
0 |
0 |
40 |
100 |
191 |
438 |
6556 |
4316 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15138 |
7029 |
959 |
348 |
150 |
52 |
143 |
2 |
| OW |
0 |
148 |
236 |
111 |
95 |
36 |
63 |
0 |
| VODI |
0 |
38 |
260 |
159 |
113 |
51 |
93 |
0 |
| ODI |
0 |
3 |
95 |
145 |
111 |
106 |
136 |
0 |
| CDI |
0 |
0 |
47 |
72 |
86 |
148 |
330 |
10 |
| VCDI |
0 |
0 |
66 |
115 |
214 |
460 |
6477 |
4314 |
|
Date: 2022-12-21:
| 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 |
14844 |
7072 |
943 |
490 |
117 |
66 |
89 |
0 |
| OW |
0 |
49 |
240 |
168 |
104 |
58 |
45 |
0 |
| VODI |
0 |
15 |
162 |
193 |
158 |
104 |
63 |
0 |
| ODI |
0 |
6 |
70 |
113 |
121 |
148 |
85 |
0 |
| CDI |
0 |
4 |
49 |
76 |
116 |
220 |
238 |
5 |
| VCDI |
0 |
0 |
39 |
115 |
199 |
709 |
7099 |
3767 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14844 |
6894 |
826 |
486 |
141 |
93 |
133 |
0 |
| OW |
0 |
149 |
198 |
150 |
107 |
47 |
57 |
0 |
| VODI |
0 |
63 |
220 |
150 |
95 |
77 |
78 |
0 |
| ODI |
0 |
20 |
110 |
120 |
102 |
84 |
86 |
0 |
| CDI |
0 |
11 |
61 |
104 |
131 |
233 |
232 |
12 |
| VCDI |
0 |
9 |
88 |
145 |
239 |
771 |
7033 |
3760 |
|
Date: 2022-12-23:
| 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 |
14813 |
6807 |
741 |
542 |
99 |
72 |
85 |
0 |
| OW |
0 |
71 |
223 |
184 |
87 |
68 |
56 |
0 |
| VODI |
0 |
14 |
154 |
183 |
144 |
92 |
83 |
0 |
| ODI |
0 |
2 |
63 |
133 |
125 |
106 |
108 |
0 |
| CDI |
0 |
0 |
19 |
69 |
120 |
184 |
311 |
17 |
| VCDI |
0 |
0 |
6 |
62 |
165 |
694 |
7264 |
4193 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14813 |
6664 |
660 |
464 |
96 |
107 |
137 |
0 |
| OW |
0 |
186 |
220 |
203 |
72 |
35 |
62 |
0 |
| VODI |
0 |
34 |
209 |
209 |
140 |
93 |
107 |
0 |
| ODI |
0 |
10 |
71 |
125 |
104 |
97 |
125 |
0 |
| CDI |
0 |
0 |
34 |
88 |
122 |
157 |
349 |
12 |
| VCDI |
0 |
0 |
12 |
84 |
206 |
727 |
7127 |
4198 |
|
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