Validation of sea ice concentration
Bulletin date: 2022-12-29
Model vs. observations, sea ice class contingency tables
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 |
|
...date precedes bulletin
|
Date: 2022-12-27:
| 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 |
14353 |
6296 |
1487 |
423 |
55 |
30 |
45 |
0 |
| OW |
0 |
24 |
167 |
246 |
106 |
81 |
30 |
0 |
| VODI |
0 |
7 |
97 |
193 |
118 |
148 |
68 |
0 |
| ODI |
0 |
5 |
39 |
100 |
110 |
193 |
108 |
0 |
| CDI |
0 |
1 |
18 |
62 |
83 |
288 |
265 |
1 |
| VCDI |
0 |
3 |
26 |
108 |
142 |
908 |
7736 |
3989 |
|
...date precedes bulletin
|
Date: 2022-12-29:
| 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 |
14394 |
6285 |
1216 |
422 |
132 |
46 |
60 |
0 |
| OW |
0 |
86 |
300 |
144 |
112 |
61 |
43 |
1 |
| VODI |
0 |
0 |
175 |
206 |
142 |
100 |
98 |
9 |
| ODI |
0 |
0 |
54 |
134 |
106 |
160 |
122 |
2 |
| CDI |
0 |
0 |
26 |
106 |
99 |
176 |
387 |
33 |
| VCDI |
0 |
0 |
15 |
179 |
222 |
542 |
6907 |
4857 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14394 |
6331 |
1264 |
425 |
141 |
59 |
72 |
0 |
| OW |
0 |
40 |
268 |
148 |
104 |
53 |
44 |
2 |
| VODI |
0 |
0 |
161 |
177 |
142 |
102 |
90 |
8 |
| ODI |
0 |
0 |
54 |
126 |
102 |
155 |
128 |
2 |
| CDI |
0 |
0 |
24 |
126 |
97 |
164 |
368 |
37 |
| VCDI |
0 |
0 |
15 |
189 |
227 |
552 |
6915 |
4853 |
|
Date: 2023-01-02:
| 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 |
14570 |
6187 |
1091 |
355 |
155 |
63 |
4 |
0 |
| OW |
1 |
252 |
207 |
115 |
125 |
51 |
21 |
0 |
| VODI |
0 |
141 |
194 |
141 |
136 |
134 |
30 |
0 |
| ODI |
0 |
71 |
140 |
77 |
117 |
177 |
95 |
0 |
| CDI |
0 |
48 |
149 |
115 |
80 |
251 |
333 |
0 |
| VCDI |
0 |
84 |
372 |
269 |
377 |
626 |
6401 |
4404 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14571 |
5961 |
991 |
342 |
160 |
114 |
44 |
0 |
| OW |
0 |
278 |
166 |
103 |
110 |
73 |
31 |
0 |
| VODI |
0 |
354 |
252 |
129 |
128 |
140 |
79 |
0 |
| ODI |
0 |
86 |
159 |
91 |
99 |
176 |
105 |
0 |
| CDI |
0 |
68 |
158 |
85 |
80 |
213 |
386 |
2 |
| VCDI |
0 |
36 |
427 |
322 |
413 |
586 |
6239 |
4402 |
|
Date: 2023-01-04:
| 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 |
14785 |
6236 |
803 |
244 |
57 |
16 |
0 |
0 |
| OW |
0 |
314 |
222 |
102 |
47 |
55 |
5 |
0 |
| VODI |
0 |
211 |
187 |
206 |
85 |
101 |
31 |
0 |
| ODI |
0 |
80 |
107 |
150 |
91 |
158 |
68 |
0 |
| CDI |
0 |
64 |
96 |
163 |
133 |
192 |
317 |
4 |
| VCDI |
0 |
50 |
145 |
427 |
473 |
774 |
6730 |
4230 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14785 |
6025 |
714 |
198 |
48 |
102 |
42 |
0 |
| OW |
0 |
296 |
194 |
98 |
51 |
68 |
40 |
0 |
| VODI |
0 |
334 |
253 |
297 |
97 |
111 |
86 |
0 |
| ODI |
0 |
103 |
112 |
203 |
109 |
151 |
95 |
0 |
| CDI |
0 |
126 |
109 |
138 |
120 |
197 |
351 |
1 |
| VCDI |
0 |
71 |
178 |
358 |
461 |
667 |
6537 |
4233 |
|
Date: 2023-01-06:
| 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 |
14622 |
6172 |
700 |
266 |
45 |
8 |
0 |
0 |
| OW |
0 |
250 |
247 |
174 |
51 |
23 |
1 |
0 |
| VODI |
0 |
137 |
216 |
282 |
99 |
78 |
22 |
0 |
| ODI |
0 |
91 |
123 |
179 |
147 |
103 |
32 |
0 |
| CDI |
0 |
64 |
84 |
183 |
215 |
211 |
276 |
5 |
| VCDI |
0 |
93 |
149 |
351 |
469 |
958 |
6734 |
4299 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14622 |
6138 |
641 |
220 |
45 |
72 |
37 |
0 |
| OW |
0 |
157 |
226 |
172 |
44 |
74 |
30 |
0 |
| VODI |
0 |
152 |
233 |
344 |
204 |
97 |
61 |
0 |
| ODI |
0 |
66 |
115 |
171 |
148 |
116 |
90 |
1 |
| CDI |
0 |
140 |
123 |
151 |
127 |
181 |
277 |
66 |
| VCDI |
0 |
154 |
181 |
377 |
458 |
841 |
6570 |
4237 |
|
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