Validation of sea ice concentration
Bulletin date: 2021-08-05
Model vs. observations, sea ice class contingency tables
Date: 2021-07-30:
| 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 |
20917 |
6270 |
2340 |
820 |
287 |
74 |
82 |
0 |
| OW |
0 |
6 |
72 |
143 |
164 |
47 |
17 |
0 |
| VODI |
0 |
0 |
56 |
122 |
210 |
138 |
90 |
4 |
| ODI |
0 |
0 |
12 |
37 |
120 |
383 |
751 |
57 |
| CDI |
0 |
0 |
0 |
9 |
66 |
365 |
1741 |
2739 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
11 |
9 |
|
...date precedes bulletin
|
Date: 2021-08-03:
| 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 |
21687 |
5902 |
2421 |
703 |
293 |
50 |
5 |
0 |
| OW |
0 |
0 |
43 |
139 |
130 |
46 |
10 |
0 |
| VODI |
0 |
0 |
8 |
71 |
224 |
186 |
50 |
0 |
| ODI |
0 |
0 |
0 |
18 |
177 |
420 |
490 |
19 |
| CDI |
0 |
0 |
0 |
4 |
28 |
497 |
1927 |
2202 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
119 |
290 |
|
...date precedes bulletin
|
Date: 2021-08-05:
| 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 |
21845 |
6199 |
2171 |
606 |
311 |
48 |
4 |
0 |
| OW |
0 |
0 |
79 |
136 |
122 |
50 |
4 |
0 |
| VODI |
0 |
0 |
18 |
86 |
214 |
181 |
52 |
0 |
| ODI |
0 |
0 |
6 |
34 |
205 |
477 |
425 |
8 |
| CDI |
0 |
0 |
0 |
8 |
64 |
561 |
2129 |
1775 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
0 |
74 |
266 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
21845 |
6199 |
2168 |
613 |
315 |
50 |
4 |
0 |
| OW |
0 |
0 |
75 |
122 |
118 |
31 |
4 |
0 |
| VODI |
0 |
0 |
24 |
95 |
203 |
187 |
52 |
0 |
| ODI |
0 |
0 |
7 |
34 |
215 |
537 |
427 |
11 |
| CDI |
0 |
0 |
0 |
6 |
65 |
511 |
2061 |
1756 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
1 |
140 |
282 |
|
Date: 2021-08-09:
| 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 |
22021 |
6243 |
2409 |
669 |
189 |
44 |
15 |
0 |
| OW |
0 |
0 |
67 |
151 |
100 |
87 |
7 |
0 |
| VODI |
0 |
0 |
27 |
100 |
211 |
264 |
38 |
0 |
| ODI |
0 |
0 |
4 |
60 |
168 |
1049 |
740 |
0 |
| CDI |
0 |
0 |
0 |
11 |
17 |
398 |
1887 |
1046 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
21 |
116 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
22021 |
6243 |
2366 |
594 |
167 |
32 |
15 |
0 |
| OW |
0 |
0 |
94 |
149 |
100 |
93 |
7 |
0 |
| VODI |
0 |
0 |
40 |
130 |
164 |
225 |
36 |
0 |
| ODI |
0 |
0 |
7 |
96 |
166 |
714 |
286 |
0 |
| CDI |
0 |
0 |
0 |
22 |
88 |
778 |
2297 |
1039 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
67 |
123 |
|
Date: 2021-08-11:
| 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 |
22569 |
6270 |
1848 |
730 |
208 |
80 |
12 |
0 |
| OW |
0 |
0 |
60 |
128 |
133 |
69 |
17 |
0 |
| VODI |
0 |
0 |
12 |
67 |
270 |
279 |
61 |
0 |
| ODI |
0 |
0 |
3 |
47 |
210 |
946 |
832 |
2 |
| CDI |
0 |
0 |
0 |
6 |
31 |
387 |
1788 |
1025 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
16 |
53 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
22569 |
6259 |
1826 |
654 |
187 |
55 |
10 |
0 |
| OW |
0 |
8 |
66 |
154 |
110 |
91 |
20 |
0 |
| VODI |
0 |
3 |
19 |
95 |
234 |
262 |
59 |
0 |
| ODI |
0 |
0 |
12 |
59 |
212 |
627 |
312 |
0 |
| CDI |
0 |
0 |
0 |
16 |
109 |
726 |
2310 |
1065 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
15 |
15 |
|
Date: 2021-08-13:
| 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 |
22546 |
6460 |
1639 |
697 |
291 |
64 |
11 |
0 |
| OW |
0 |
0 |
66 |
126 |
152 |
65 |
9 |
0 |
| VODI |
0 |
0 |
15 |
63 |
278 |
317 |
70 |
0 |
| ODI |
0 |
0 |
2 |
40 |
216 |
904 |
909 |
13 |
| CDI |
0 |
0 |
0 |
2 |
33 |
406 |
1691 |
1005 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
12 |
57 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
22546 |
6456 |
1615 |
646 |
274 |
52 |
10 |
0 |
| OW |
0 |
4 |
77 |
150 |
155 |
85 |
8 |
0 |
| VODI |
0 |
0 |
26 |
82 |
256 |
309 |
62 |
0 |
| ODI |
0 |
0 |
4 |
46 |
201 |
607 |
382 |
1 |
| CDI |
0 |
0 |
0 |
4 |
84 |
703 |
2229 |
1074 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
0 |
11 |
0 |
|
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