Validation of sea ice concentration
Bulletin date: 2024-01-11
Model vs. observations, sea ice class contingency tables
Date: 2024-01-05:
| 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 |
12965 |
6410 |
826 |
305 |
142 |
39 |
5 |
0 |
| OW |
0 |
41 |
165 |
88 |
85 |
67 |
19 |
0 |
| VODI |
0 |
11 |
177 |
135 |
77 |
128 |
47 |
0 |
| ODI |
0 |
0 |
100 |
160 |
73 |
108 |
83 |
0 |
| CDI |
0 |
0 |
39 |
117 |
145 |
189 |
337 |
5 |
| VCDI |
0 |
0 |
71 |
137 |
275 |
741 |
8322 |
5525 |
|
...date precedes bulletin
|
Date: 2024-01-09:
| 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 |
12422 |
6287 |
1072 |
422 |
205 |
92 |
38 |
0 |
| OW |
0 |
33 |
166 |
109 |
88 |
81 |
53 |
0 |
| VODI |
0 |
12 |
109 |
116 |
66 |
111 |
113 |
0 |
| ODI |
0 |
0 |
29 |
125 |
56 |
83 |
163 |
0 |
| CDI |
0 |
0 |
7 |
74 |
68 |
119 |
321 |
83 |
| VCDI |
0 |
0 |
0 |
64 |
173 |
428 |
6299 |
8472 |
|
...date precedes bulletin
|
Date: 2024-01-11:
| 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 |
12455 |
6308 |
754 |
485 |
169 |
71 |
24 |
0 |
| OW |
0 |
64 |
121 |
116 |
95 |
55 |
34 |
0 |
| VODI |
0 |
44 |
85 |
149 |
84 |
104 |
73 |
0 |
| ODI |
0 |
18 |
49 |
101 |
60 |
114 |
115 |
3 |
| CDI |
0 |
3 |
38 |
80 |
101 |
159 |
412 |
14 |
| VCDI |
0 |
2 |
12 |
49 |
208 |
531 |
8511 |
6289 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12455 |
6319 |
748 |
488 |
170 |
76 |
30 |
0 |
| OW |
0 |
56 |
128 |
112 |
88 |
50 |
33 |
0 |
| VODI |
0 |
48 |
93 |
156 |
95 |
95 |
73 |
0 |
| ODI |
0 |
11 |
46 |
97 |
63 |
112 |
120 |
3 |
| CDI |
0 |
3 |
32 |
71 |
91 |
168 |
451 |
15 |
| VCDI |
0 |
2 |
12 |
56 |
210 |
533 |
8462 |
6288 |
|
Date: 2024-01-15:
| 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 |
11510 |
6241 |
1142 |
559 |
189 |
125 |
21 |
0 |
| OW |
0 |
13 |
129 |
147 |
131 |
51 |
15 |
0 |
| VODI |
0 |
0 |
68 |
130 |
176 |
122 |
28 |
0 |
| ODI |
0 |
0 |
51 |
86 |
122 |
180 |
61 |
0 |
| CDI |
0 |
0 |
11 |
74 |
106 |
308 |
315 |
27 |
| VCDI |
0 |
0 |
2 |
31 |
156 |
670 |
7922 |
7240 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11510 |
6213 |
1065 |
522 |
220 |
145 |
28 |
0 |
| OW |
0 |
30 |
113 |
125 |
112 |
59 |
19 |
0 |
| VODI |
0 |
10 |
99 |
110 |
136 |
129 |
45 |
0 |
| ODI |
0 |
1 |
68 |
95 |
99 |
148 |
48 |
0 |
| CDI |
0 |
0 |
51 |
110 |
125 |
278 |
252 |
15 |
| VCDI |
0 |
0 |
7 |
65 |
188 |
697 |
7970 |
7252 |
|
Date: 2024-01-17:
| 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 |
11922 |
6025 |
932 |
417 |
173 |
148 |
7 |
0 |
| OW |
0 |
41 |
89 |
91 |
88 |
68 |
16 |
0 |
| VODI |
0 |
17 |
93 |
142 |
111 |
136 |
32 |
0 |
| ODI |
0 |
3 |
78 |
71 |
78 |
132 |
92 |
3 |
| CDI |
0 |
1 |
57 |
78 |
117 |
172 |
244 |
19 |
| VCDI |
0 |
0 |
42 |
133 |
292 |
573 |
9051 |
6375 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11922 |
5969 |
906 |
400 |
189 |
177 |
21 |
0 |
| OW |
0 |
68 |
66 |
110 |
83 |
58 |
19 |
0 |
| VODI |
0 |
43 |
97 |
108 |
90 |
137 |
42 |
1 |
| ODI |
0 |
7 |
73 |
62 |
81 |
128 |
92 |
2 |
| CDI |
0 |
0 |
81 |
74 |
94 |
152 |
269 |
22 |
| VCDI |
0 |
0 |
68 |
178 |
322 |
577 |
8999 |
6372 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12142 |
5832 |
686 |
507 |
160 |
72 |
37 |
0 |
| OW |
0 |
118 |
90 |
109 |
56 |
43 |
22 |
0 |
| VODI |
0 |
98 |
81 |
140 |
75 |
53 |
51 |
0 |
| ODI |
0 |
49 |
66 |
114 |
69 |
59 |
79 |
4 |
| CDI |
0 |
39 |
57 |
108 |
79 |
116 |
265 |
63 |
| VCDI |
0 |
27 |
181 |
207 |
255 |
539 |
9307 |
6104 |
|
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