Validation of sea ice concentration
Bulletin date: 2018-09-20
Model vs. observations, sea ice class contingency tables
Date: 2018-09-14:
| 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 |
25018 |
5646 |
1288 |
292 |
92 |
19 |
12 |
0 |
| OW |
0 |
0 |
72 |
69 |
59 |
21 |
4 |
0 |
| VODI |
0 |
0 |
23 |
85 |
95 |
69 |
3 |
0 |
| ODI |
0 |
0 |
6 |
41 |
132 |
177 |
69 |
0 |
| CDI |
0 |
0 |
1 |
9 |
57 |
213 |
664 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
39 |
98 |
1871 |
1915 |
|
...date precedes bulletin
|
Date: 2018-09-18:
| 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 |
25504 |
5706 |
791 |
232 |
35 |
9 |
6 |
0 |
| OW |
0 |
7 |
73 |
107 |
40 |
8 |
2 |
0 |
| VODI |
0 |
2 |
27 |
138 |
92 |
34 |
4 |
0 |
| ODI |
0 |
0 |
5 |
87 |
183 |
104 |
46 |
0 |
| CDI |
0 |
0 |
0 |
23 |
82 |
173 |
641 |
0 |
| VCDI |
0 |
0 |
0 |
4 |
21 |
93 |
1876 |
2004 |
|
...date precedes bulletin
|
Date: 2018-09-20:
| 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 |
25799 |
5437 |
716 |
196 |
49 |
18 |
6 |
0 |
| OW |
0 |
4 |
77 |
76 |
48 |
18 |
4 |
0 |
| VODI |
0 |
0 |
30 |
67 |
99 |
70 |
1 |
0 |
| ODI |
0 |
0 |
5 |
33 |
136 |
120 |
31 |
0 |
| CDI |
0 |
0 |
3 |
10 |
142 |
187 |
400 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
22 |
126 |
2178 |
2051 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
25799 |
5440 |
716 |
179 |
50 |
22 |
5 |
0 |
| OW |
0 |
1 |
75 |
90 |
44 |
14 |
4 |
0 |
| VODI |
0 |
0 |
32 |
70 |
108 |
66 |
3 |
0 |
| ODI |
0 |
0 |
5 |
33 |
146 |
113 |
30 |
0 |
| CDI |
0 |
0 |
3 |
10 |
125 |
193 |
347 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
23 |
131 |
2231 |
2051 |
|
Date: 2018-09-24:
| 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 |
25817 |
5698 |
454 |
215 |
24 |
2 |
1 |
0 |
| OW |
0 |
40 |
65 |
76 |
28 |
6 |
2 |
0 |
| VODI |
0 |
16 |
43 |
81 |
66 |
33 |
8 |
0 |
| ODI |
0 |
3 |
10 |
56 |
92 |
74 |
47 |
0 |
| CDI |
0 |
3 |
7 |
24 |
55 |
255 |
310 |
0 |
| VCDI |
0 |
0 |
1 |
9 |
17 |
75 |
1806 |
2640 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
25817 |
5531 |
381 |
155 |
16 |
3 |
1 |
0 |
| OW |
0 |
97 |
50 |
72 |
16 |
6 |
0 |
0 |
| VODI |
0 |
78 |
47 |
79 |
48 |
17 |
8 |
0 |
| ODI |
0 |
36 |
49 |
49 |
59 |
25 |
12 |
0 |
| CDI |
0 |
14 |
35 |
69 |
91 |
237 |
78 |
0 |
| VCDI |
0 |
4 |
18 |
37 |
52 |
157 |
2075 |
2640 |
|
Date: 2018-09-26:
| 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 |
25745 |
5663 |
382 |
220 |
47 |
3 |
1 |
0 |
| OW |
0 |
78 |
36 |
113 |
36 |
3 |
1 |
0 |
| VODI |
0 |
31 |
27 |
88 |
78 |
20 |
3 |
0 |
| ODI |
0 |
3 |
21 |
42 |
97 |
57 |
10 |
0 |
| CDI |
0 |
0 |
7 |
24 |
77 |
224 |
229 |
1 |
| VCDI |
0 |
0 |
0 |
7 |
29 |
173 |
1977 |
2606 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
25745 |
5468 |
346 |
164 |
33 |
1 |
1 |
0 |
| OW |
0 |
101 |
24 |
69 |
27 |
3 |
0 |
0 |
| VODI |
0 |
82 |
25 |
116 |
63 |
17 |
2 |
0 |
| ODI |
0 |
57 |
14 |
49 |
69 |
19 |
6 |
0 |
| CDI |
0 |
59 |
34 |
49 |
110 |
152 |
71 |
2 |
| VCDI |
0 |
8 |
30 |
47 |
62 |
288 |
2141 |
2605 |
|
Date: 2018-09-28:
| 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 |
24934 |
6081 |
447 |
275 |
85 |
27 |
1 |
0 |
| OW |
0 |
100 |
30 |
47 |
101 |
16 |
0 |
0 |
| VODI |
0 |
41 |
42 |
34 |
122 |
44 |
18 |
0 |
| ODI |
0 |
14 |
13 |
33 |
55 |
86 |
19 |
0 |
| CDI |
0 |
0 |
15 |
13 |
51 |
204 |
278 |
2 |
| VCDI |
0 |
0 |
0 |
3 |
22 |
162 |
1740 |
3004 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24934 |
5927 |
437 |
251 |
81 |
25 |
1 |
0 |
| OW |
0 |
90 |
11 |
57 |
47 |
15 |
0 |
0 |
| VODI |
0 |
74 |
18 |
22 |
106 |
42 |
13 |
0 |
| ODI |
0 |
55 |
12 |
20 |
81 |
39 |
10 |
0 |
| CDI |
0 |
60 |
32 |
23 |
55 |
113 |
49 |
0 |
| VCDI |
0 |
30 |
37 |
32 |
66 |
305 |
1983 |
3006 |
|
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