Validation of sea ice concentration
Bulletin date: 2024-01-25
Model vs. observations, sea ice class contingency tables
Date: 2024-01-19:
| 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 |
12142 |
5891 |
720 |
516 |
146 |
62 |
17 |
0 |
| OW |
0 |
96 |
105 |
114 |
60 |
43 |
14 |
0 |
| VODI |
0 |
77 |
84 |
162 |
92 |
59 |
50 |
0 |
| ODI |
0 |
50 |
46 |
103 |
81 |
84 |
104 |
15 |
| CDI |
0 |
30 |
68 |
93 |
91 |
147 |
346 |
92 |
| VCDI |
0 |
19 |
138 |
197 |
224 |
487 |
9230 |
6064 |
|
...date precedes bulletin
|
Date: 2024-01-23:
| 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 |
12708 |
5772 |
751 |
342 |
148 |
73 |
15 |
0 |
| OW |
0 |
136 |
114 |
83 |
65 |
34 |
13 |
0 |
| VODI |
0 |
71 |
119 |
109 |
99 |
89 |
26 |
0 |
| ODI |
0 |
15 |
93 |
81 |
103 |
146 |
47 |
0 |
| CDI |
0 |
0 |
103 |
68 |
143 |
313 |
230 |
0 |
| VCDI |
0 |
0 |
106 |
189 |
177 |
998 |
7548 |
7032 |
|
...date precedes bulletin
|
Date: 2024-01-25:
| 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 |
12901 |
5791 |
628 |
342 |
100 |
21 |
5 |
0 |
| OW |
0 |
170 |
113 |
104 |
66 |
9 |
13 |
0 |
| VODI |
0 |
87 |
172 |
178 |
93 |
49 |
35 |
0 |
| ODI |
0 |
28 |
113 |
194 |
108 |
69 |
90 |
11 |
| CDI |
0 |
20 |
106 |
187 |
137 |
179 |
360 |
56 |
| VCDI |
0 |
14 |
73 |
223 |
264 |
866 |
9174 |
5010 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12901 |
5796 |
623 |
354 |
112 |
24 |
10 |
0 |
| OW |
0 |
151 |
112 |
104 |
60 |
12 |
16 |
0 |
| VODI |
0 |
98 |
173 |
168 |
101 |
46 |
36 |
0 |
| ODI |
0 |
28 |
112 |
192 |
97 |
70 |
91 |
10 |
| CDI |
0 |
18 |
104 |
180 |
130 |
189 |
370 |
53 |
| VCDI |
0 |
19 |
81 |
230 |
268 |
852 |
9154 |
5014 |
|
Date: 2024-01-29:
| 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 |
13268 |
6080 |
712 |
397 |
61 |
10 |
10 |
0 |
| OW |
0 |
129 |
187 |
222 |
67 |
8 |
6 |
0 |
| VODI |
0 |
64 |
154 |
248 |
168 |
73 |
16 |
0 |
| ODI |
0 |
14 |
94 |
172 |
170 |
119 |
96 |
32 |
| CDI |
0 |
8 |
110 |
170 |
148 |
192 |
344 |
95 |
| VCDI |
0 |
0 |
84 |
275 |
281 |
795 |
7734 |
5346 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13268 |
5744 |
557 |
251 |
46 |
9 |
11 |
0 |
| OW |
0 |
230 |
144 |
141 |
58 |
8 |
2 |
0 |
| VODI |
0 |
153 |
136 |
291 |
153 |
60 |
16 |
2 |
| ODI |
0 |
69 |
107 |
178 |
140 |
114 |
91 |
31 |
| CDI |
0 |
56 |
89 |
154 |
135 |
130 |
239 |
101 |
| VCDI |
0 |
43 |
308 |
469 |
363 |
876 |
7847 |
5339 |
|
Date: 2024-01-31:
| 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 |
13334 |
6077 |
788 |
165 |
49 |
16 |
8 |
0 |
| OW |
0 |
278 |
194 |
168 |
53 |
11 |
8 |
0 |
| VODI |
0 |
146 |
147 |
247 |
172 |
83 |
37 |
0 |
| ODI |
0 |
86 |
81 |
159 |
135 |
120 |
128 |
8 |
| CDI |
0 |
67 |
108 |
137 |
110 |
191 |
404 |
38 |
| VCDI |
0 |
26 |
306 |
437 |
398 |
723 |
8305 |
4211 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13334 |
5682 |
654 |
135 |
48 |
13 |
8 |
0 |
| OW |
0 |
190 |
196 |
118 |
41 |
11 |
7 |
0 |
| VODI |
0 |
197 |
133 |
244 |
119 |
58 |
51 |
1 |
| ODI |
0 |
150 |
75 |
144 |
138 |
113 |
89 |
26 |
| CDI |
0 |
160 |
60 |
142 |
114 |
155 |
445 |
32 |
| VCDI |
0 |
301 |
506 |
530 |
457 |
794 |
8290 |
4198 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12117 |
6439 |
761 |
393 |
163 |
45 |
5 |
0 |
| OW |
0 |
146 |
163 |
107 |
64 |
50 |
1 |
0 |
| VODI |
0 |
139 |
182 |
185 |
87 |
98 |
25 |
0 |
| ODI |
0 |
107 |
72 |
186 |
124 |
131 |
135 |
7 |
| CDI |
0 |
150 |
63 |
124 |
103 |
155 |
376 |
23 |
| VCDI |
0 |
454 |
394 |
757 |
556 |
930 |
8227 |
3915 |
|
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