Validation of sea ice concentration
Bulletin date: 2020-11-26
Model vs. observations, sea ice class contingency tables
Date: 2020-11-20:
| 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 |
18401 |
7868 |
1051 |
413 |
96 |
85 |
37 |
0 |
| OW |
0 |
107 |
270 |
235 |
82 |
36 |
8 |
0 |
| VODI |
0 |
12 |
87 |
167 |
120 |
77 |
23 |
0 |
| ODI |
0 |
1 |
23 |
77 |
102 |
116 |
104 |
0 |
| CDI |
0 |
0 |
15 |
58 |
85 |
188 |
269 |
0 |
| VCDI |
0 |
0 |
5 |
33 |
53 |
347 |
4341 |
3167 |
|
...date precedes bulletin
|
Date: 2020-11-24:
| 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 |
18724 |
7330 |
989 |
530 |
106 |
76 |
39 |
0 |
| OW |
0 |
22 |
125 |
264 |
67 |
28 |
7 |
0 |
| VODI |
0 |
14 |
32 |
246 |
165 |
72 |
20 |
0 |
| ODI |
0 |
4 |
11 |
108 |
202 |
118 |
53 |
0 |
| CDI |
0 |
1 |
15 |
55 |
215 |
199 |
195 |
0 |
| VCDI |
0 |
0 |
8 |
29 |
90 |
304 |
4603 |
3093 |
|
...date precedes bulletin
|
Date: 2020-11-26:
| 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 |
18313 |
7744 |
964 |
419 |
87 |
67 |
48 |
0 |
| OW |
1 |
73 |
153 |
241 |
80 |
39 |
19 |
0 |
| VODI |
0 |
27 |
61 |
196 |
173 |
81 |
32 |
0 |
| ODI |
0 |
10 |
23 |
108 |
147 |
124 |
52 |
0 |
| CDI |
0 |
4 |
16 |
44 |
152 |
187 |
226 |
0 |
| VCDI |
0 |
0 |
3 |
30 |
73 |
315 |
5315 |
2512 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
18314 |
7737 |
980 |
461 |
99 |
72 |
48 |
0 |
| OW |
0 |
77 |
143 |
197 |
94 |
41 |
17 |
0 |
| VODI |
0 |
29 |
59 |
198 |
142 |
92 |
32 |
0 |
| ODI |
0 |
12 |
20 |
109 |
158 |
104 |
59 |
0 |
| CDI |
0 |
3 |
15 |
44 |
139 |
185 |
229 |
0 |
| VCDI |
0 |
0 |
3 |
29 |
80 |
319 |
5307 |
2512 |
|
Date: 2020-11-30:
| 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 |
18277 |
7696 |
1136 |
305 |
76 |
14 |
17 |
0 |
| OW |
0 |
44 |
191 |
171 |
99 |
29 |
34 |
0 |
| VODI |
0 |
16 |
113 |
213 |
165 |
62 |
21 |
0 |
| ODI |
0 |
1 |
53 |
198 |
193 |
161 |
42 |
0 |
| CDI |
0 |
0 |
18 |
103 |
157 |
213 |
141 |
1 |
| VCDI |
0 |
0 |
6 |
85 |
98 |
394 |
3750 |
3866 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
18277 |
7595 |
860 |
223 |
99 |
47 |
53 |
0 |
| OW |
0 |
97 |
345 |
165 |
68 |
23 |
18 |
0 |
| VODI |
0 |
52 |
201 |
237 |
175 |
65 |
48 |
0 |
| ODI |
0 |
10 |
59 |
183 |
147 |
142 |
39 |
0 |
| CDI |
0 |
3 |
29 |
154 |
154 |
184 |
146 |
4 |
| VCDI |
0 |
0 |
23 |
113 |
145 |
412 |
3701 |
3863 |
|
Date: 2020-12-02:
| 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 |
17809 |
7950 |
796 |
592 |
221 |
15 |
28 |
0 |
| OW |
0 |
170 |
128 |
179 |
117 |
45 |
14 |
0 |
| VODI |
0 |
34 |
91 |
196 |
144 |
94 |
36 |
0 |
| ODI |
0 |
10 |
50 |
106 |
94 |
154 |
71 |
0 |
| CDI |
0 |
2 |
34 |
77 |
120 |
242 |
169 |
0 |
| VCDI |
0 |
1 |
24 |
59 |
102 |
352 |
4369 |
3464 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17809 |
7629 |
680 |
446 |
184 |
62 |
66 |
0 |
| OW |
0 |
315 |
136 |
182 |
88 |
18 |
19 |
0 |
| VODI |
0 |
156 |
133 |
241 |
174 |
89 |
46 |
0 |
| ODI |
0 |
47 |
88 |
163 |
89 |
144 |
36 |
0 |
| CDI |
0 |
15 |
48 |
99 |
154 |
199 |
139 |
0 |
| VCDI |
0 |
5 |
38 |
78 |
109 |
390 |
4381 |
3464 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17741 |
7067 |
939 |
305 |
142 |
89 |
66 |
0 |
| OW |
8 |
206 |
158 |
142 |
111 |
70 |
15 |
0 |
| VODI |
0 |
223 |
198 |
180 |
154 |
168 |
63 |
0 |
| ODI |
0 |
41 |
90 |
133 |
152 |
174 |
63 |
0 |
| CDI |
0 |
2 |
75 |
123 |
188 |
136 |
174 |
0 |
| VCDI |
0 |
0 |
9 |
61 |
267 |
417 |
4067 |
3942 |
|
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