Validation of sea ice concentration
Bulletin date: 2020-09-17
Model vs. observations, sea ice class contingency tables
Date: 2020-09-11:
| 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 |
24709 |
6901 |
711 |
285 |
116 |
32 |
4 |
0 |
| OW |
0 |
55 |
162 |
104 |
155 |
32 |
5 |
0 |
| VODI |
0 |
14 |
113 |
139 |
171 |
58 |
36 |
0 |
| ODI |
0 |
0 |
20 |
79 |
188 |
239 |
124 |
0 |
| CDI |
0 |
0 |
0 |
7 |
66 |
514 |
1553 |
4 |
| VCDI |
0 |
0 |
0 |
1 |
0 |
8 |
983 |
571 |
|
...date precedes bulletin
|
Date: 2020-09-15:
| 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 |
24894 |
6787 |
542 |
440 |
74 |
5 |
1 |
0 |
| OW |
0 |
45 |
63 |
200 |
169 |
1 |
1 |
0 |
| VODI |
0 |
10 |
21 |
201 |
183 |
53 |
16 |
0 |
| ODI |
0 |
0 |
0 |
57 |
167 |
173 |
128 |
0 |
| CDI |
0 |
0 |
0 |
4 |
52 |
215 |
805 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
279 |
1763 |
810 |
|
...date precedes bulletin
|
Date: 2020-09-17:
| 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 |
24440 |
6791 |
781 |
411 |
108 |
26 |
0 |
0 |
| OW |
0 |
21 |
118 |
177 |
134 |
20 |
6 |
0 |
| VODI |
0 |
4 |
40 |
128 |
267 |
94 |
25 |
0 |
| ODI |
0 |
0 |
3 |
44 |
137 |
178 |
141 |
0 |
| CDI |
0 |
0 |
0 |
10 |
55 |
144 |
566 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
8 |
359 |
2061 |
861 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24440 |
6788 |
776 |
423 |
129 |
30 |
0 |
0 |
| OW |
0 |
24 |
113 |
153 |
133 |
23 |
4 |
0 |
| VODI |
0 |
4 |
47 |
127 |
228 |
74 |
26 |
0 |
| ODI |
0 |
0 |
6 |
54 |
148 |
179 |
111 |
0 |
| CDI |
0 |
0 |
0 |
12 |
63 |
174 |
513 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
8 |
341 |
2145 |
861 |
|
Date: 2020-09-21:
| 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 |
24203 |
6969 |
1137 |
262 |
40 |
11 |
0 |
0 |
| OW |
0 |
3 |
89 |
144 |
74 |
17 |
3 |
0 |
| VODI |
0 |
0 |
34 |
131 |
180 |
71 |
17 |
0 |
| ODI |
0 |
0 |
2 |
24 |
148 |
228 |
65 |
0 |
| CDI |
0 |
0 |
1 |
8 |
51 |
256 |
393 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
20 |
84 |
1959 |
1534 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24203 |
6881 |
1004 |
278 |
85 |
26 |
0 |
0 |
| OW |
0 |
62 |
115 |
111 |
60 |
38 |
3 |
0 |
| VODI |
0 |
24 |
71 |
116 |
166 |
120 |
8 |
0 |
| ODI |
0 |
5 |
56 |
33 |
97 |
163 |
52 |
0 |
| CDI |
0 |
0 |
17 |
28 |
70 |
224 |
344 |
0 |
| VCDI |
0 |
0 |
0 |
4 |
35 |
96 |
2030 |
1534 |
|
Date: 2020-09-23:
| 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 |
24005 |
7289 |
755 |
352 |
120 |
15 |
1 |
0 |
| OW |
0 |
8 |
58 |
114 |
80 |
47 |
1 |
0 |
| VODI |
0 |
0 |
32 |
108 |
171 |
93 |
3 |
0 |
| ODI |
0 |
0 |
6 |
53 |
145 |
158 |
32 |
0 |
| CDI |
0 |
0 |
3 |
20 |
58 |
262 |
163 |
0 |
| VCDI |
0 |
0 |
1 |
7 |
26 |
153 |
2084 |
1736 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
24005 |
7150 |
653 |
322 |
141 |
34 |
1 |
0 |
| OW |
0 |
113 |
61 |
87 |
68 |
44 |
1 |
0 |
| VODI |
0 |
34 |
108 |
148 |
157 |
96 |
5 |
0 |
| ODI |
0 |
0 |
25 |
58 |
134 |
155 |
54 |
0 |
| CDI |
0 |
0 |
6 |
23 |
68 |
259 |
205 |
0 |
| VCDI |
0 |
0 |
2 |
16 |
32 |
140 |
2018 |
1736 |
|
Date: 2020-09-25:
| 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 |
23832 |
7115 |
912 |
363 |
85 |
23 |
2 |
0 |
| OW |
0 |
0 |
75 |
84 |
104 |
46 |
6 |
0 |
| VODI |
0 |
0 |
28 |
66 |
197 |
91 |
8 |
0 |
| ODI |
0 |
0 |
2 |
33 |
154 |
132 |
40 |
0 |
| CDI |
0 |
0 |
0 |
13 |
84 |
274 |
150 |
0 |
| VCDI |
0 |
0 |
0 |
5 |
17 |
162 |
2157 |
1899 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
23832 |
6933 |
772 |
357 |
103 |
31 |
5 |
0 |
| OW |
0 |
107 |
41 |
72 |
109 |
34 |
6 |
0 |
| VODI |
0 |
75 |
139 |
54 |
212 |
71 |
15 |
0 |
| ODI |
0 |
0 |
64 |
50 |
100 |
110 |
49 |
0 |
| CDI |
0 |
0 |
1 |
22 |
94 |
282 |
143 |
0 |
| VCDI |
0 |
0 |
0 |
9 |
23 |
200 |
2145 |
1899 |
|
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