Validation of sea ice concentration
Bulletin date: 2022-07-21
Model vs. observations, sea ice class contingency tables
Date: 2022-07-15:
| 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 |
18480 |
7646 |
2533 |
638 |
210 |
160 |
62 |
0 |
| OW |
0 |
2 |
121 |
131 |
117 |
67 |
31 |
0 |
| VODI |
0 |
3 |
61 |
89 |
96 |
118 |
97 |
0 |
| ODI |
0 |
0 |
16 |
34 |
75 |
165 |
239 |
0 |
| CDI |
0 |
0 |
15 |
56 |
121 |
254 |
1593 |
1271 |
| VCDI |
0 |
0 |
0 |
1 |
4 |
25 |
812 |
2816 |
|
...date precedes bulletin
|
Date: 2022-07-19:
| 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 |
18640 |
8226 |
2468 |
536 |
223 |
102 |
91 |
0 |
| OW |
0 |
2 |
121 |
94 |
61 |
53 |
28 |
0 |
| VODI |
0 |
1 |
31 |
84 |
95 |
146 |
103 |
0 |
| ODI |
0 |
0 |
3 |
34 |
79 |
181 |
433 |
2 |
| CDI |
0 |
0 |
2 |
37 |
43 |
156 |
2188 |
1793 |
| VCDI |
0 |
0 |
0 |
1 |
3 |
5 |
238 |
1856 |
|
...date precedes bulletin
|
Date: 2022-07-21:
| 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 |
19656 |
7739 |
2188 |
562 |
134 |
116 |
62 |
0 |
| OW |
0 |
3 |
113 |
132 |
53 |
39 |
35 |
0 |
| VODI |
0 |
0 |
26 |
161 |
117 |
63 |
138 |
0 |
| ODI |
0 |
0 |
9 |
61 |
91 |
123 |
488 |
0 |
| CDI |
0 |
0 |
2 |
59 |
74 |
174 |
3372 |
1030 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
0 |
371 |
967 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
19656 |
7740 |
2200 |
561 |
138 |
129 |
66 |
0 |
| OW |
0 |
1 |
99 |
128 |
55 |
30 |
36 |
0 |
| VODI |
0 |
1 |
28 |
145 |
109 |
65 |
140 |
0 |
| ODI |
0 |
0 |
7 |
78 |
89 |
108 |
461 |
0 |
| CDI |
0 |
0 |
4 |
63 |
77 |
182 |
3381 |
1011 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
1 |
382 |
986 |
|
Date: 2022-07-25:
| 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 |
20080 |
7865 |
1930 |
636 |
158 |
94 |
25 |
0 |
| OW |
0 |
1 |
73 |
168 |
60 |
20 |
25 |
0 |
| VODI |
0 |
0 |
32 |
124 |
160 |
102 |
84 |
0 |
| ODI |
0 |
0 |
3 |
53 |
109 |
195 |
390 |
0 |
| CDI |
0 |
0 |
0 |
51 |
48 |
121 |
2961 |
2021 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
3 |
185 |
382 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20080 |
7863 |
1879 |
574 |
154 |
105 |
28 |
0 |
| OW |
0 |
3 |
82 |
146 |
77 |
32 |
36 |
0 |
| VODI |
0 |
0 |
42 |
142 |
101 |
84 |
161 |
0 |
| ODI |
0 |
0 |
23 |
79 |
97 |
115 |
413 |
0 |
| CDI |
0 |
0 |
12 |
91 |
106 |
196 |
2766 |
1847 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
3 |
266 |
556 |
|
Date: 2022-07-27:
| 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 |
20085 |
7931 |
1722 |
729 |
251 |
125 |
21 |
0 |
| OW |
0 |
0 |
54 |
141 |
86 |
32 |
28 |
0 |
| VODI |
0 |
0 |
24 |
113 |
165 |
105 |
83 |
0 |
| ODI |
0 |
0 |
0 |
41 |
126 |
174 |
418 |
0 |
| CDI |
0 |
0 |
0 |
38 |
87 |
149 |
2989 |
1970 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
7 |
201 |
263 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20085 |
7926 |
1645 |
662 |
265 |
138 |
22 |
0 |
| OW |
0 |
5 |
67 |
125 |
70 |
55 |
39 |
0 |
| VODI |
0 |
0 |
56 |
112 |
106 |
67 |
191 |
0 |
| ODI |
0 |
0 |
25 |
79 |
119 |
116 |
406 |
0 |
| CDI |
0 |
0 |
7 |
84 |
154 |
208 |
2798 |
1862 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
8 |
284 |
371 |
|
Date: 2022-07-29:
| 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 |
19644 |
8695 |
1673 |
574 |
171 |
101 |
48 |
0 |
| OW |
0 |
7 |
94 |
94 |
69 |
46 |
37 |
0 |
| VODI |
0 |
0 |
45 |
92 |
110 |
109 |
135 |
0 |
| ODI |
0 |
0 |
12 |
33 |
90 |
159 |
461 |
0 |
| CDI |
0 |
0 |
0 |
29 |
69 |
137 |
2909 |
2129 |
| VCDI |
0 |
0 |
0 |
1 |
2 |
13 |
157 |
214 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
19644 |
8675 |
1552 |
517 |
180 |
123 |
62 |
0 |
| OW |
0 |
20 |
86 |
84 |
44 |
57 |
57 |
0 |
| VODI |
0 |
5 |
92 |
90 |
79 |
95 |
234 |
0 |
| ODI |
0 |
2 |
64 |
74 |
89 |
104 |
395 |
0 |
| CDI |
0 |
0 |
30 |
58 |
119 |
174 |
2879 |
1960 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
12 |
120 |
383 |
|
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