Validation of sea ice concentration
Bulletin date: 2022-09-01
Model vs. observations, sea ice class contingency tables
Date: 2022-08-26:
| 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 |
24060 |
5495 |
963 |
398 |
171 |
41 |
8 |
0 |
| OW |
0 |
1 |
22 |
149 |
117 |
32 |
10 |
0 |
| VODI |
0 |
0 |
3 |
64 |
172 |
93 |
39 |
0 |
| ODI |
0 |
0 |
0 |
8 |
98 |
300 |
197 |
0 |
| CDI |
0 |
0 |
0 |
17 |
74 |
226 |
1871 |
965 |
| VCDI |
0 |
0 |
0 |
6 |
14 |
53 |
1234 |
1258 |
|
...date precedes bulletin
|
Date: 2022-08-30:
| 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 |
23893 |
5583 |
1091 |
382 |
150 |
62 |
6 |
0 |
| OW |
0 |
2 |
40 |
101 |
84 |
43 |
15 |
0 |
| VODI |
0 |
0 |
22 |
81 |
121 |
83 |
44 |
0 |
| ODI |
0 |
0 |
7 |
19 |
107 |
287 |
473 |
1 |
| CDI |
0 |
0 |
0 |
28 |
77 |
110 |
1841 |
1146 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
1 |
437 |
1822 |
|
...date precedes bulletin
|
Date: 2022-09-01:
| 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 |
23884 |
5631 |
1194 |
306 |
138 |
59 |
16 |
0 |
| OW |
0 |
10 |
38 |
118 |
83 |
39 |
24 |
0 |
| VODI |
0 |
1 |
33 |
69 |
106 |
80 |
56 |
0 |
| ODI |
0 |
0 |
19 |
21 |
78 |
136 |
647 |
2 |
| CDI |
0 |
0 |
0 |
72 |
103 |
123 |
1873 |
1046 |
| VCDI |
0 |
0 |
0 |
1 |
2 |
2 |
912 |
1237 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
23884 |
5633 |
1202 |
314 |
144 |
61 |
17 |
0 |
| OW |
0 |
8 |
32 |
117 |
85 |
39 |
21 |
0 |
| VODI |
0 |
1 |
32 |
61 |
98 |
84 |
63 |
0 |
| ODI |
0 |
0 |
18 |
21 |
76 |
123 |
668 |
12 |
| CDI |
0 |
0 |
0 |
68 |
102 |
130 |
1753 |
974 |
| VCDI |
0 |
0 |
0 |
6 |
5 |
2 |
1006 |
1299 |
|
Date: 2022-09-05:
| 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 |
24611 |
5230 |
877 |
348 |
87 |
38 |
3 |
0 |
| OW |
0 |
7 |
39 |
127 |
99 |
27 |
7 |
0 |
| VODI |
0 |
1 |
15 |
103 |
124 |
88 |
28 |
0 |
| ODI |
0 |
0 |
0 |
49 |
215 |
261 |
440 |
6 |
| CDI |
0 |
0 |
0 |
72 |
96 |
191 |
1757 |
1034 |
| VCDI |
0 |
0 |
0 |
5 |
4 |
12 |
1014 |
1144 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24611 |
5227 |
820 |
311 |
104 |
50 |
4 |
0 |
| OW |
0 |
10 |
64 |
130 |
78 |
32 |
11 |
0 |
| VODI |
0 |
1 |
40 |
107 |
129 |
80 |
33 |
0 |
| ODI |
0 |
0 |
7 |
56 |
112 |
157 |
389 |
13 |
| CDI |
0 |
0 |
0 |
83 |
177 |
269 |
1639 |
802 |
| VCDI |
0 |
0 |
0 |
17 |
25 |
29 |
1173 |
1369 |
|
Date: 2022-09-07:
| 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 |
24191 |
5730 |
592 |
517 |
122 |
38 |
3 |
0 |
| OW |
0 |
7 |
20 |
152 |
94 |
29 |
8 |
0 |
| VODI |
0 |
0 |
13 |
84 |
128 |
69 |
37 |
0 |
| ODI |
0 |
0 |
1 |
49 |
178 |
266 |
341 |
0 |
| CDI |
0 |
0 |
0 |
63 |
100 |
254 |
1803 |
941 |
| VCDI |
0 |
0 |
0 |
24 |
24 |
58 |
1096 |
1127 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24191 |
5703 |
576 |
430 |
124 |
43 |
4 |
0 |
| OW |
0 |
25 |
24 |
156 |
84 |
24 |
11 |
0 |
| VODI |
0 |
8 |
11 |
126 |
113 |
73 |
33 |
0 |
| ODI |
0 |
1 |
15 |
59 |
82 |
160 |
216 |
0 |
| CDI |
0 |
0 |
0 |
70 |
191 |
341 |
1693 |
414 |
| VCDI |
0 |
0 |
0 |
48 |
52 |
73 |
1331 |
1654 |
|
Date: 2022-09-09:
| 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 |
24347 |
5501 |
568 |
506 |
119 |
39 |
5 |
0 |
| OW |
0 |
11 |
22 |
173 |
93 |
20 |
12 |
0 |
| VODI |
0 |
1 |
12 |
113 |
126 |
43 |
34 |
0 |
| ODI |
0 |
0 |
4 |
33 |
154 |
295 |
231 |
0 |
| CDI |
0 |
0 |
0 |
60 |
89 |
263 |
1838 |
803 |
| VCDI |
0 |
0 |
0 |
39 |
43 |
70 |
1224 |
1268 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24347 |
5479 |
526 |
457 |
134 |
38 |
9 |
0 |
| OW |
0 |
23 |
42 |
144 |
83 |
17 |
11 |
0 |
| VODI |
0 |
10 |
23 |
141 |
96 |
62 |
27 |
0 |
| ODI |
0 |
1 |
15 |
76 |
90 |
142 |
154 |
0 |
| CDI |
0 |
0 |
0 |
40 |
154 |
387 |
1593 |
265 |
| VCDI |
0 |
0 |
0 |
66 |
67 |
84 |
1550 |
1806 |
|
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