Validation of sea ice concentration
Bulletin date: 2020-09-24
Model vs. observations, sea ice class contingency tables
Date: 2020-09-18:
| 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 |
24232 |
6901 |
843 |
430 |
90 |
13 |
0 |
0 |
| OW |
0 |
33 |
116 |
157 |
147 |
24 |
4 |
0 |
| VODI |
0 |
4 |
66 |
109 |
247 |
115 |
26 |
0 |
| ODI |
0 |
0 |
21 |
44 |
101 |
198 |
137 |
0 |
| CDI |
0 |
0 |
1 |
5 |
40 |
173 |
493 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
11 |
58 |
1914 |
1405 |
|
...date precedes bulletin
|
Date: 2020-09-22:
| 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 |
24401 |
6911 |
920 |
340 |
35 |
14 |
0 |
0 |
| OW |
0 |
14 |
60 |
144 |
71 |
20 |
2 |
0 |
| VODI |
0 |
1 |
39 |
143 |
181 |
56 |
10 |
0 |
| ODI |
0 |
0 |
14 |
62 |
151 |
166 |
40 |
0 |
| CDI |
0 |
0 |
7 |
10 |
69 |
249 |
243 |
0 |
| VCDI |
0 |
0 |
2 |
6 |
33 |
95 |
1926 |
1724 |
|
...date precedes bulletin
|
Date: 2020-09-24:
| 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 |
24072 |
7005 |
981 |
325 |
42 |
27 |
1 |
0 |
| OW |
0 |
0 |
77 |
120 |
67 |
47 |
0 |
0 |
| VODI |
0 |
0 |
28 |
105 |
175 |
73 |
2 |
0 |
| ODI |
0 |
0 |
2 |
44 |
173 |
138 |
19 |
0 |
| CDI |
0 |
0 |
0 |
17 |
70 |
289 |
101 |
0 |
| VCDI |
0 |
0 |
0 |
5 |
30 |
194 |
2326 |
1604 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24072 |
7005 |
996 |
341 |
46 |
31 |
1 |
0 |
| OW |
0 |
0 |
66 |
103 |
58 |
35 |
0 |
0 |
| VODI |
0 |
0 |
24 |
104 |
177 |
75 |
1 |
0 |
| ODI |
0 |
0 |
2 |
38 |
161 |
139 |
31 |
0 |
| CDI |
0 |
0 |
0 |
19 |
88 |
275 |
118 |
0 |
| VCDI |
0 |
0 |
0 |
11 |
27 |
213 |
2298 |
1604 |
|
Date: 2020-09-28:
| 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 |
23725 |
6884 |
848 |
359 |
122 |
23 |
1 |
0 |
| OW |
0 |
1 |
12 |
74 |
83 |
55 |
7 |
0 |
| VODI |
0 |
0 |
5 |
24 |
112 |
118 |
8 |
0 |
| ODI |
0 |
0 |
1 |
15 |
90 |
236 |
26 |
0 |
| CDI |
0 |
0 |
0 |
0 |
117 |
366 |
203 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
24 |
183 |
2420 |
2017 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
23725 |
6881 |
832 |
380 |
145 |
59 |
3 |
0 |
| OW |
0 |
3 |
23 |
58 |
104 |
68 |
9 |
0 |
| VODI |
0 |
1 |
4 |
23 |
122 |
212 |
24 |
0 |
| ODI |
0 |
0 |
5 |
3 |
51 |
172 |
47 |
0 |
| CDI |
0 |
0 |
2 |
8 |
84 |
238 |
165 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
42 |
232 |
2417 |
2017 |
|
Date: 2020-09-30:
| 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 |
24151 |
6462 |
854 |
353 |
78 |
15 |
4 |
0 |
| OW |
0 |
0 |
32 |
81 |
68 |
54 |
2 |
0 |
| VODI |
0 |
0 |
11 |
57 |
59 |
107 |
19 |
0 |
| ODI |
0 |
0 |
3 |
33 |
61 |
122 |
73 |
0 |
| CDI |
0 |
0 |
1 |
58 |
65 |
166 |
161 |
0 |
| VCDI |
0 |
0 |
0 |
31 |
60 |
196 |
3002 |
1720 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24151 |
6462 |
850 |
367 |
88 |
25 |
4 |
0 |
| OW |
0 |
0 |
30 |
67 |
68 |
78 |
6 |
0 |
| VODI |
0 |
0 |
10 |
66 |
93 |
137 |
50 |
0 |
| ODI |
0 |
0 |
7 |
25 |
46 |
108 |
87 |
0 |
| CDI |
0 |
0 |
4 |
56 |
38 |
99 |
164 |
0 |
| VCDI |
0 |
0 |
0 |
32 |
58 |
213 |
2950 |
1720 |
|
Date: 2020-10-02:
| 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 |
24499 |
6264 |
565 |
366 |
75 |
33 |
8 |
0 |
| OW |
0 |
8 |
14 |
74 |
76 |
40 |
12 |
0 |
| VODI |
0 |
2 |
8 |
54 |
71 |
99 |
51 |
0 |
| ODI |
0 |
0 |
3 |
13 |
65 |
112 |
91 |
0 |
| CDI |
0 |
0 |
1 |
9 |
43 |
145 |
196 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
19 |
303 |
3117 |
1722 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24499 |
6249 |
537 |
358 |
83 |
22 |
8 |
0 |
| OW |
0 |
21 |
30 |
71 |
60 |
65 |
19 |
0 |
| VODI |
0 |
3 |
19 |
53 |
89 |
118 |
69 |
0 |
| ODI |
0 |
1 |
4 |
25 |
60 |
125 |
91 |
0 |
| CDI |
0 |
0 |
1 |
9 |
37 |
108 |
196 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
20 |
294 |
3092 |
1722 |
|
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