Validation of sea ice concentration
Bulletin date: 2023-02-09
Model vs. observations, sea ice class contingency tables
Date: 2023-02-03:
| 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 |
13856 |
6557 |
702 |
475 |
96 |
18 |
1 |
0 |
| OW |
0 |
87 |
208 |
190 |
83 |
44 |
2 |
0 |
| VODI |
0 |
69 |
124 |
192 |
140 |
108 |
13 |
0 |
| ODI |
0 |
31 |
73 |
129 |
124 |
129 |
47 |
0 |
| CDI |
0 |
22 |
57 |
123 |
150 |
193 |
258 |
0 |
| VCDI |
0 |
3 |
54 |
272 |
408 |
1093 |
8156 |
3872 |
|
...date precedes bulletin
|
Date: 2023-02-07:
| 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 |
14469 |
6767 |
507 |
292 |
64 |
21 |
0 |
0 |
| OW |
0 |
163 |
166 |
203 |
65 |
34 |
1 |
0 |
| VODI |
0 |
103 |
123 |
267 |
118 |
55 |
6 |
0 |
| ODI |
0 |
62 |
65 |
132 |
152 |
107 |
76 |
4 |
| CDI |
0 |
39 |
56 |
118 |
156 |
186 |
348 |
23 |
| VCDI |
0 |
24 |
75 |
154 |
281 |
858 |
6685 |
5134 |
|
...date precedes bulletin
|
Date: 2023-02-09:
| 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 |
14271 |
6767 |
615 |
270 |
55 |
7 |
0 |
0 |
| OW |
0 |
162 |
238 |
211 |
66 |
29 |
4 |
0 |
| VODI |
0 |
94 |
140 |
268 |
115 |
49 |
11 |
0 |
| ODI |
0 |
45 |
59 |
193 |
151 |
126 |
64 |
5 |
| CDI |
0 |
36 |
39 |
182 |
139 |
237 |
267 |
61 |
| VCDI |
0 |
38 |
63 |
629 |
308 |
1105 |
7697 |
3343 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14271 |
6767 |
643 |
306 |
63 |
17 |
0 |
0 |
| OW |
0 |
153 |
212 |
197 |
61 |
22 |
4 |
0 |
| VODI |
0 |
93 |
136 |
259 |
121 |
53 |
13 |
0 |
| ODI |
0 |
50 |
60 |
174 |
141 |
145 |
66 |
5 |
| CDI |
0 |
35 |
35 |
184 |
145 |
237 |
265 |
56 |
| VCDI |
0 |
44 |
68 |
633 |
303 |
1079 |
7695 |
3348 |
|
Date: 2023-02-13:
| 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 |
14188 |
6917 |
674 |
212 |
57 |
16 |
5 |
0 |
| OW |
0 |
104 |
262 |
164 |
72 |
33 |
4 |
0 |
| VODI |
0 |
52 |
174 |
201 |
172 |
107 |
55 |
0 |
| ODI |
0 |
17 |
75 |
229 |
173 |
171 |
86 |
2 |
| CDI |
0 |
11 |
66 |
199 |
168 |
216 |
331 |
12 |
| VCDI |
0 |
4 |
198 |
451 |
705 |
1100 |
7505 |
2971 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14188 |
6742 |
550 |
219 |
66 |
21 |
4 |
0 |
| OW |
0 |
157 |
180 |
110 |
64 |
30 |
9 |
0 |
| VODI |
0 |
96 |
203 |
166 |
140 |
90 |
46 |
0 |
| ODI |
0 |
42 |
111 |
132 |
115 |
157 |
85 |
4 |
| CDI |
0 |
28 |
86 |
146 |
107 |
150 |
226 |
10 |
| VCDI |
0 |
40 |
319 |
683 |
855 |
1195 |
7616 |
2971 |
|
Date: 2023-02-15:
| 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 |
13992 |
6695 |
1014 |
212 |
76 |
26 |
0 |
0 |
| OW |
0 |
60 |
287 |
153 |
77 |
44 |
2 |
0 |
| VODI |
0 |
22 |
175 |
165 |
167 |
116 |
16 |
0 |
| ODI |
0 |
12 |
62 |
107 |
155 |
204 |
59 |
0 |
| CDI |
0 |
4 |
59 |
89 |
149 |
334 |
238 |
12 |
| VCDI |
0 |
2 |
152 |
263 |
333 |
1602 |
7158 |
3866 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13992 |
6534 |
882 |
194 |
67 |
16 |
0 |
0 |
| OW |
0 |
104 |
247 |
92 |
64 |
44 |
1 |
0 |
| VODI |
0 |
69 |
213 |
127 |
123 |
73 |
14 |
0 |
| ODI |
0 |
32 |
93 |
104 |
140 |
208 |
45 |
0 |
| CDI |
0 |
22 |
80 |
116 |
110 |
261 |
216 |
7 |
| VCDI |
0 |
34 |
234 |
356 |
453 |
1724 |
7197 |
3871 |
|
Date: 2023-02-17:
| 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 |
14041 |
6772 |
831 |
191 |
64 |
16 |
8 |
0 |
| OW |
0 |
98 |
231 |
147 |
92 |
31 |
1 |
0 |
| VODI |
0 |
40 |
196 |
187 |
152 |
167 |
10 |
0 |
| ODI |
0 |
26 |
85 |
127 |
167 |
188 |
47 |
0 |
| CDI |
0 |
27 |
43 |
103 |
161 |
251 |
226 |
11 |
| VCDI |
0 |
44 |
163 |
319 |
549 |
1410 |
7274 |
3663 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14041 |
6643 |
727 |
174 |
58 |
17 |
7 |
0 |
| OW |
0 |
139 |
230 |
117 |
85 |
26 |
2 |
0 |
| VODI |
0 |
82 |
197 |
111 |
108 |
108 |
4 |
0 |
| ODI |
0 |
40 |
108 |
124 |
117 |
166 |
12 |
0 |
| CDI |
0 |
29 |
84 |
152 |
170 |
223 |
143 |
2 |
| VCDI |
0 |
74 |
203 |
396 |
647 |
1523 |
7398 |
3672 |
|
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