Validation of sea ice concentration
Bulletin date: 2020-12-10
Model vs. observations, sea ice class contingency tables
Date: 2020-12-04:
| 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 |
17749 |
7342 |
1042 |
405 |
194 |
108 |
21 |
0 |
| OW |
0 |
172 |
237 |
162 |
141 |
99 |
15 |
0 |
| VODI |
0 |
20 |
123 |
175 |
179 |
146 |
50 |
0 |
| ODI |
0 |
5 |
47 |
100 |
162 |
157 |
74 |
0 |
| CDI |
0 |
0 |
16 |
49 |
143 |
165 |
247 |
0 |
| VCDI |
0 |
0 |
4 |
53 |
195 |
379 |
4041 |
3942 |
|
...date precedes bulletin
|
Date: 2020-12-08:
| 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 |
17635 |
7210 |
710 |
387 |
83 |
89 |
21 |
0 |
| OW |
5 |
92 |
131 |
213 |
111 |
87 |
31 |
0 |
| VODI |
0 |
19 |
56 |
191 |
144 |
164 |
95 |
0 |
| ODI |
0 |
10 |
19 |
96 |
141 |
279 |
163 |
0 |
| CDI |
0 |
3 |
13 |
48 |
163 |
476 |
442 |
0 |
| VCDI |
0 |
0 |
2 |
24 |
71 |
368 |
4793 |
3574 |
|
...date precedes bulletin
|
Date: 2020-12-10:
| 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 |
17095 |
7490 |
837 |
266 |
131 |
121 |
10 |
0 |
| OW |
1 |
79 |
179 |
146 |
109 |
80 |
24 |
0 |
| VODI |
0 |
19 |
108 |
149 |
140 |
197 |
63 |
0 |
| ODI |
0 |
0 |
31 |
66 |
131 |
230 |
134 |
0 |
| CDI |
0 |
0 |
9 |
61 |
136 |
408 |
424 |
0 |
| VCDI |
0 |
0 |
1 |
15 |
87 |
493 |
5207 |
3482 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17095 |
7517 |
867 |
300 |
142 |
114 |
18 |
0 |
| OW |
1 |
57 |
164 |
116 |
94 |
88 |
14 |
0 |
| VODI |
0 |
13 |
95 |
145 |
142 |
183 |
63 |
0 |
| ODI |
0 |
1 |
31 |
60 |
126 |
225 |
110 |
0 |
| CDI |
0 |
0 |
5 |
61 |
133 |
378 |
388 |
0 |
| VCDI |
0 |
0 |
3 |
21 |
97 |
541 |
5269 |
3482 |
|
Date: 2020-12-14:
| 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 |
15873 |
7153 |
1466 |
459 |
219 |
171 |
32 |
0 |
| OW |
0 |
15 |
222 |
128 |
130 |
129 |
39 |
0 |
| VODI |
0 |
1 |
137 |
168 |
147 |
163 |
73 |
0 |
| ODI |
0 |
0 |
36 |
92 |
116 |
256 |
208 |
0 |
| CDI |
0 |
0 |
9 |
53 |
116 |
211 |
669 |
7 |
| VCDI |
0 |
0 |
1 |
9 |
30 |
140 |
4389 |
5092 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15871 |
7110 |
1324 |
433 |
289 |
279 |
47 |
0 |
| OW |
2 |
48 |
227 |
115 |
95 |
142 |
46 |
0 |
| VODI |
0 |
11 |
189 |
117 |
71 |
110 |
125 |
0 |
| ODI |
0 |
0 |
96 |
126 |
99 |
81 |
157 |
0 |
| CDI |
0 |
0 |
32 |
95 |
134 |
210 |
433 |
8 |
| VCDI |
0 |
0 |
3 |
23 |
70 |
248 |
4602 |
5091 |
|
Date: 2020-12-16:
| 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 |
15963 |
7241 |
839 |
437 |
160 |
109 |
11 |
0 |
| OW |
0 |
74 |
186 |
174 |
100 |
116 |
29 |
0 |
| VODI |
0 |
17 |
157 |
197 |
134 |
147 |
69 |
0 |
| ODI |
0 |
1 |
66 |
129 |
108 |
143 |
97 |
0 |
| CDI |
0 |
0 |
33 |
86 |
139 |
263 |
292 |
9 |
| VCDI |
0 |
0 |
8 |
33 |
93 |
428 |
5675 |
4396 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15957 |
7171 |
786 |
476 |
228 |
180 |
33 |
0 |
| OW |
6 |
122 |
156 |
171 |
94 |
148 |
64 |
0 |
| VODI |
0 |
33 |
182 |
156 |
83 |
126 |
122 |
0 |
| ODI |
0 |
5 |
93 |
111 |
89 |
92 |
177 |
5 |
| CDI |
0 |
1 |
46 |
95 |
101 |
167 |
275 |
31 |
| VCDI |
0 |
1 |
26 |
47 |
139 |
493 |
5502 |
4369 |
|
Date: 2020-12-18:
| 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 |
15995 |
7019 |
518 |
338 |
147 |
70 |
6 |
0 |
| OW |
21 |
189 |
114 |
158 |
112 |
155 |
38 |
0 |
| VODI |
0 |
59 |
125 |
142 |
118 |
146 |
65 |
0 |
| ODI |
0 |
14 |
77 |
111 |
114 |
184 |
80 |
1 |
| CDI |
0 |
11 |
30 |
89 |
80 |
256 |
255 |
17 |
| VCDI |
0 |
3 |
22 |
61 |
78 |
479 |
5779 |
4883 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15998 |
6965 |
520 |
376 |
167 |
147 |
27 |
0 |
| OW |
17 |
175 |
98 |
125 |
90 |
172 |
43 |
0 |
| VODI |
1 |
84 |
112 |
150 |
152 |
237 |
114 |
0 |
| ODI |
0 |
27 |
86 |
91 |
92 |
168 |
224 |
22 |
| CDI |
0 |
13 |
39 |
75 |
65 |
177 |
344 |
39 |
| VCDI |
0 |
31 |
31 |
82 |
83 |
389 |
5471 |
4840 |
|
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