Validation of sea ice concentration
Bulletin date: 2024-02-08
Model vs. observations, sea ice class contingency tables
Date: 2024-02-02:
| 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 |
12117 |
6710 |
870 |
364 |
100 |
29 |
5 |
0 |
| OW |
0 |
241 |
223 |
192 |
90 |
25 |
6 |
0 |
| VODI |
0 |
193 |
139 |
343 |
171 |
104 |
48 |
0 |
| ODI |
0 |
110 |
58 |
176 |
158 |
177 |
166 |
11 |
| CDI |
0 |
95 |
63 |
168 |
129 |
229 |
449 |
22 |
| VCDI |
0 |
86 |
282 |
509 |
449 |
845 |
8095 |
3912 |
|
...date precedes bulletin
|
Date: 2024-02-06:
| 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 |
12205 |
6921 |
885 |
411 |
57 |
6 |
3 |
0 |
| OW |
0 |
183 |
118 |
136 |
56 |
11 |
3 |
0 |
| VODI |
0 |
170 |
168 |
202 |
121 |
36 |
18 |
0 |
| ODI |
0 |
106 |
101 |
373 |
202 |
127 |
102 |
14 |
| CDI |
0 |
40 |
126 |
382 |
245 |
324 |
504 |
60 |
| VCDI |
0 |
9 |
75 |
717 |
418 |
1119 |
7701 |
3704 |
|
...date precedes bulletin
|
Date: 2024-02-08:
| 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 |
11712 |
6970 |
925 |
479 |
142 |
35 |
3 |
0 |
| OW |
0 |
149 |
145 |
130 |
74 |
58 |
6 |
0 |
| VODI |
0 |
103 |
125 |
135 |
92 |
89 |
23 |
0 |
| ODI |
0 |
68 |
116 |
133 |
114 |
153 |
83 |
42 |
| CDI |
0 |
75 |
100 |
149 |
148 |
520 |
408 |
116 |
| VCDI |
0 |
4 |
135 |
313 |
397 |
1646 |
7186 |
4858 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11712 |
6964 |
956 |
505 |
147 |
55 |
5 |
0 |
| OW |
0 |
142 |
116 |
109 |
70 |
48 |
4 |
0 |
| VODI |
0 |
100 |
113 |
137 |
95 |
81 |
22 |
0 |
| ODI |
0 |
70 |
132 |
131 |
116 |
151 |
71 |
37 |
| CDI |
0 |
83 |
97 |
141 |
138 |
537 |
388 |
117 |
| VCDI |
0 |
10 |
132 |
316 |
401 |
1629 |
7219 |
4862 |
|
Date: 2024-02-12:
| 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 |
11137 |
6811 |
1393 |
514 |
227 |
151 |
9 |
0 |
| OW |
0 |
20 |
225 |
229 |
133 |
80 |
10 |
0 |
| VODI |
0 |
2 |
162 |
188 |
205 |
139 |
17 |
0 |
| ODI |
0 |
0 |
39 |
80 |
220 |
231 |
82 |
1 |
| CDI |
0 |
0 |
10 |
58 |
196 |
524 |
622 |
27 |
| VCDI |
0 |
0 |
20 |
62 |
151 |
831 |
7144 |
6209 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11137 |
6710 |
1248 |
482 |
231 |
194 |
19 |
0 |
| OW |
0 |
68 |
147 |
116 |
81 |
80 |
11 |
0 |
| VODI |
0 |
35 |
136 |
125 |
155 |
147 |
20 |
0 |
| ODI |
0 |
16 |
84 |
95 |
173 |
168 |
78 |
3 |
| CDI |
0 |
4 |
116 |
103 |
167 |
376 |
361 |
51 |
| VCDI |
0 |
0 |
118 |
210 |
325 |
991 |
7395 |
6183 |
|
Date: 2024-02-14:
| 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 |
11472 |
6863 |
1142 |
434 |
126 |
49 |
5 |
0 |
| OW |
0 |
113 |
214 |
223 |
78 |
58 |
7 |
0 |
| VODI |
0 |
72 |
129 |
262 |
112 |
110 |
20 |
0 |
| ODI |
0 |
66 |
90 |
127 |
118 |
135 |
73 |
0 |
| CDI |
0 |
7 |
35 |
136 |
164 |
297 |
336 |
0 |
| VCDI |
0 |
3 |
34 |
115 |
218 |
897 |
8409 |
5410 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11472 |
6779 |
1103 |
407 |
124 |
74 |
21 |
0 |
| OW |
0 |
112 |
152 |
153 |
69 |
38 |
17 |
0 |
| VODI |
0 |
59 |
117 |
196 |
93 |
92 |
29 |
0 |
| ODI |
0 |
51 |
67 |
124 |
112 |
160 |
74 |
0 |
| CDI |
0 |
54 |
62 |
123 |
123 |
275 |
372 |
4 |
| VCDI |
0 |
69 |
143 |
294 |
295 |
907 |
8337 |
5406 |
|
Date: 2024-02-16:
| 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 |
12408 |
6478 |
617 |
280 |
81 |
27 |
1 |
0 |
| OW |
2 |
258 |
174 |
122 |
81 |
53 |
4 |
0 |
| VODI |
0 |
178 |
256 |
188 |
143 |
83 |
23 |
0 |
| ODI |
0 |
80 |
146 |
149 |
142 |
115 |
74 |
0 |
| CDI |
0 |
13 |
135 |
187 |
156 |
185 |
445 |
7 |
| VCDI |
0 |
5 |
125 |
320 |
391 |
809 |
8169 |
5049 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12409 |
6354 |
652 |
314 |
126 |
44 |
25 |
0 |
| OW |
1 |
203 |
138 |
74 |
71 |
53 |
23 |
0 |
| VODI |
0 |
155 |
140 |
115 |
85 |
80 |
37 |
0 |
| ODI |
0 |
99 |
69 |
102 |
101 |
118 |
70 |
0 |
| CDI |
0 |
65 |
91 |
103 |
112 |
207 |
404 |
6 |
| VCDI |
0 |
136 |
363 |
538 |
499 |
770 |
8157 |
5050 |
|
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