Validation of sea ice concentration
Bulletin date: 2020-10-15
Model vs. observations, sea ice class contingency tables
Date: 2020-10-09:
| 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 |
24465 |
5962 |
642 |
343 |
90 |
28 |
5 |
0 |
| OW |
0 |
12 |
48 |
78 |
47 |
43 |
9 |
0 |
| VODI |
0 |
3 |
21 |
75 |
59 |
84 |
56 |
0 |
| ODI |
0 |
2 |
5 |
33 |
45 |
78 |
105 |
0 |
| CDI |
0 |
0 |
2 |
17 |
32 |
81 |
199 |
0 |
| VCDI |
0 |
0 |
0 |
11 |
43 |
189 |
2774 |
2473 |
|
...date precedes bulletin
|
Date: 2020-10-13:
| 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 |
23918 |
5710 |
632 |
615 |
196 |
48 |
4 |
0 |
| OW |
0 |
0 |
19 |
47 |
95 |
42 |
13 |
0 |
| VODI |
0 |
0 |
5 |
27 |
91 |
95 |
25 |
0 |
| ODI |
0 |
0 |
1 |
24 |
100 |
141 |
63 |
0 |
| CDI |
0 |
0 |
1 |
16 |
70 |
158 |
190 |
0 |
| VCDI |
0 |
0 |
0 |
67 |
75 |
223 |
3063 |
2385 |
|
...date precedes bulletin
|
Date: 2020-10-15:
| 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 |
23716 |
5606 |
727 |
524 |
292 |
90 |
2 |
0 |
| OW |
0 |
5 |
22 |
23 |
75 |
92 |
14 |
0 |
| VODI |
0 |
3 |
18 |
11 |
52 |
130 |
37 |
0 |
| ODI |
0 |
0 |
8 |
11 |
34 |
152 |
80 |
0 |
| CDI |
0 |
0 |
2 |
6 |
31 |
172 |
198 |
0 |
| VCDI |
0 |
0 |
1 |
2 |
79 |
195 |
3260 |
2489 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
23716 |
5604 |
728 |
534 |
324 |
100 |
2 |
0 |
| OW |
0 |
7 |
22 |
14 |
51 |
94 |
12 |
0 |
| VODI |
0 |
3 |
15 |
10 |
46 |
129 |
38 |
0 |
| ODI |
0 |
0 |
9 |
9 |
26 |
129 |
77 |
0 |
| CDI |
0 |
0 |
3 |
8 |
36 |
180 |
197 |
0 |
| VCDI |
0 |
0 |
1 |
2 |
80 |
199 |
3265 |
2489 |
|
Date: 2020-10-19:
| 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 |
23692 |
5617 |
829 |
342 |
220 |
90 |
7 |
0 |
| OW |
4 |
6 |
25 |
40 |
47 |
53 |
18 |
0 |
| VODI |
0 |
0 |
11 |
18 |
46 |
93 |
56 |
0 |
| ODI |
0 |
0 |
0 |
13 |
15 |
82 |
116 |
0 |
| CDI |
0 |
0 |
0 |
1 |
22 |
115 |
358 |
39 |
| VCDI |
0 |
0 |
0 |
0 |
6 |
184 |
3207 |
2787 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
23683 |
5592 |
777 |
345 |
244 |
126 |
18 |
0 |
| OW |
11 |
29 |
53 |
25 |
36 |
58 |
26 |
0 |
| VODI |
2 |
2 |
20 |
25 |
30 |
68 |
90 |
0 |
| ODI |
0 |
0 |
13 |
7 |
11 |
55 |
113 |
0 |
| CDI |
0 |
0 |
2 |
10 |
22 |
95 |
219 |
44 |
| VCDI |
0 |
0 |
0 |
2 |
13 |
215 |
3296 |
2782 |
|
Date: 2020-10-21:
| 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 |
23650 |
5655 |
813 |
279 |
184 |
133 |
4 |
0 |
| OW |
13 |
4 |
38 |
33 |
43 |
65 |
28 |
0 |
| VODI |
2 |
0 |
13 |
11 |
41 |
76 |
85 |
0 |
| ODI |
0 |
0 |
1 |
7 |
13 |
77 |
117 |
0 |
| CDI |
0 |
0 |
1 |
4 |
7 |
66 |
418 |
1 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
121 |
3397 |
2755 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
23647 |
5607 |
738 |
257 |
189 |
146 |
13 |
0 |
| OW |
15 |
49 |
67 |
38 |
28 |
55 |
31 |
0 |
| VODI |
3 |
3 |
40 |
18 |
42 |
79 |
94 |
0 |
| ODI |
0 |
0 |
14 |
10 |
13 |
44 |
125 |
2 |
| CDI |
0 |
0 |
6 |
7 |
11 |
73 |
357 |
34 |
| VCDI |
0 |
0 |
1 |
4 |
9 |
141 |
3429 |
2720 |
|
Date: 2020-10-23:
| 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 |
23869 |
5571 |
597 |
265 |
145 |
83 |
78 |
0 |
| OW |
19 |
30 |
27 |
48 |
46 |
56 |
39 |
0 |
| VODI |
3 |
5 |
11 |
21 |
33 |
82 |
92 |
0 |
| ODI |
0 |
1 |
1 |
6 |
14 |
65 |
112 |
0 |
| CDI |
0 |
0 |
3 |
3 |
9 |
104 |
411 |
5 |
| VCDI |
0 |
0 |
0 |
0 |
7 |
168 |
2978 |
3152 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
23873 |
5447 |
510 |
238 |
136 |
78 |
93 |
0 |
| OW |
15 |
117 |
64 |
39 |
34 |
29 |
37 |
0 |
| VODI |
3 |
30 |
45 |
31 |
35 |
80 |
89 |
0 |
| ODI |
0 |
7 |
11 |
16 |
14 |
64 |
118 |
4 |
| CDI |
0 |
6 |
5 |
12 |
17 |
87 |
344 |
25 |
| VCDI |
0 |
0 |
4 |
7 |
18 |
220 |
3029 |
3128 |
|
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