Validation of sea ice concentration
Bulletin date: 2024-02-01
Model vs. observations, sea ice class contingency tables
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 |
|
...date precedes bulletin
|
Date: 2024-01-30:
| 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 |
13279 |
6043 |
836 |
327 |
57 |
17 |
4 |
0 |
| OW |
0 |
187 |
188 |
175 |
61 |
12 |
5 |
0 |
| VODI |
0 |
76 |
203 |
275 |
139 |
52 |
32 |
3 |
| ODI |
0 |
37 |
131 |
148 |
119 |
80 |
115 |
48 |
| CDI |
0 |
42 |
145 |
152 |
93 |
134 |
336 |
118 |
| VCDI |
0 |
14 |
192 |
347 |
327 |
713 |
7779 |
5118 |
|
...date precedes bulletin
|
Date: 2024-02-01:
| 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 |
12543 |
6568 |
852 |
230 |
38 |
19 |
6 |
0 |
| OW |
0 |
234 |
235 |
210 |
56 |
23 |
5 |
0 |
| VODI |
0 |
169 |
146 |
282 |
154 |
116 |
30 |
0 |
| ODI |
0 |
94 |
76 |
171 |
136 |
188 |
142 |
9 |
| CDI |
0 |
64 |
84 |
152 |
116 |
210 |
495 |
38 |
| VCDI |
0 |
76 |
261 |
371 |
398 |
659 |
8275 |
4228 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12543 |
6638 |
843 |
246 |
37 |
20 |
6 |
0 |
| OW |
0 |
191 |
234 |
202 |
54 |
23 |
5 |
0 |
| VODI |
0 |
168 |
157 |
266 |
147 |
110 |
30 |
0 |
| ODI |
0 |
86 |
73 |
174 |
140 |
195 |
138 |
8 |
| CDI |
0 |
53 |
96 |
150 |
125 |
198 |
514 |
39 |
| VCDI |
0 |
69 |
251 |
378 |
395 |
669 |
8260 |
4228 |
|
Date: 2024-02-05:
| 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 |
12306 |
6763 |
898 |
566 |
71 |
16 |
2 |
0 |
| OW |
0 |
275 |
176 |
151 |
56 |
8 |
2 |
0 |
| VODI |
0 |
119 |
206 |
324 |
189 |
67 |
32 |
0 |
| ODI |
0 |
15 |
150 |
256 |
232 |
150 |
113 |
6 |
| CDI |
0 |
15 |
145 |
433 |
306 |
423 |
483 |
59 |
| VCDI |
0 |
20 |
78 |
363 |
359 |
1037 |
8141 |
3148 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12306 |
6404 |
814 |
434 |
66 |
11 |
2 |
0 |
| OW |
0 |
216 |
116 |
174 |
49 |
16 |
5 |
0 |
| VODI |
0 |
256 |
113 |
218 |
118 |
51 |
8 |
0 |
| ODI |
0 |
198 |
135 |
267 |
182 |
141 |
63 |
8 |
| CDI |
0 |
79 |
127 |
289 |
215 |
299 |
369 |
65 |
| VCDI |
0 |
54 |
348 |
711 |
583 |
1183 |
8326 |
3140 |
|
Date: 2024-02-07:
| 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 |
11742 |
7044 |
970 |
508 |
79 |
17 |
3 |
0 |
| OW |
0 |
144 |
143 |
169 |
75 |
14 |
4 |
0 |
| VODI |
0 |
100 |
132 |
184 |
90 |
37 |
15 |
0 |
| ODI |
0 |
108 |
115 |
229 |
163 |
95 |
134 |
6 |
| CDI |
0 |
48 |
89 |
324 |
270 |
404 |
501 |
45 |
| VCDI |
0 |
13 |
82 |
688 |
452 |
1186 |
8051 |
3686 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11742 |
6754 |
818 |
397 |
60 |
10 |
4 |
0 |
| OW |
0 |
151 |
162 |
140 |
48 |
19 |
7 |
0 |
| VODI |
0 |
162 |
137 |
192 |
90 |
30 |
19 |
0 |
| ODI |
0 |
145 |
70 |
174 |
145 |
99 |
97 |
5 |
| CDI |
0 |
145 |
83 |
181 |
162 |
318 |
391 |
40 |
| VCDI |
0 |
100 |
261 |
1018 |
624 |
1277 |
8190 |
3692 |
|
Date: 2024-02-09:
| 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 |
11443 |
6861 |
1124 |
547 |
191 |
25 |
6 |
0 |
| OW |
0 |
101 |
144 |
169 |
98 |
54 |
9 |
0 |
| VODI |
0 |
100 |
99 |
158 |
93 |
110 |
27 |
0 |
| ODI |
0 |
72 |
74 |
140 |
118 |
164 |
121 |
36 |
| CDI |
0 |
81 |
94 |
178 |
123 |
299 |
421 |
103 |
| VCDI |
0 |
27 |
128 |
297 |
359 |
999 |
7739 |
5227 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11443 |
6704 |
953 |
414 |
128 |
27 |
8 |
0 |
| OW |
0 |
96 |
154 |
147 |
94 |
47 |
18 |
0 |
| VODI |
0 |
86 |
147 |
172 |
104 |
100 |
37 |
0 |
| ODI |
0 |
92 |
73 |
183 |
129 |
185 |
180 |
39 |
| CDI |
0 |
119 |
80 |
110 |
86 |
255 |
396 |
111 |
| VCDI |
0 |
145 |
256 |
463 |
441 |
1037 |
7684 |
5216 |
|
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