Validation of sea ice concentration
Bulletin date: 2021-11-04
Model vs. observations, sea ice class contingency tables
Date: 2021-10-29:
| 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 |
19692 |
7193 |
906 |
421 |
156 |
89 |
2 |
0 |
| OW |
0 |
49 |
155 |
154 |
157 |
104 |
8 |
0 |
| VODI |
0 |
3 |
88 |
123 |
189 |
202 |
75 |
0 |
| ODI |
0 |
1 |
26 |
42 |
97 |
266 |
187 |
0 |
| CDI |
0 |
0 |
19 |
41 |
76 |
336 |
371 |
5 |
| VCDI |
0 |
0 |
12 |
16 |
32 |
251 |
3154 |
3461 |
|
...date precedes bulletin
|
Date: 2021-11-02:
| 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 |
19257 |
7049 |
1134 |
288 |
170 |
156 |
30 |
0 |
| OW |
1 |
10 |
120 |
133 |
67 |
67 |
36 |
0 |
| VODI |
0 |
2 |
37 |
97 |
130 |
155 |
51 |
0 |
| ODI |
0 |
0 |
9 |
44 |
71 |
233 |
130 |
0 |
| CDI |
0 |
0 |
5 |
16 |
30 |
148 |
554 |
6 |
| VCDI |
0 |
0 |
1 |
8 |
27 |
134 |
4032 |
3721 |
|
...date precedes bulletin
|
Date: 2021-11-04:
| 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 |
18515 |
7408 |
1249 |
384 |
188 |
229 |
22 |
0 |
| OW |
0 |
46 |
218 |
76 |
50 |
62 |
41 |
0 |
| VODI |
0 |
9 |
93 |
159 |
75 |
94 |
52 |
0 |
| ODI |
0 |
3 |
16 |
131 |
65 |
158 |
72 |
7 |
| CDI |
0 |
5 |
12 |
101 |
89 |
249 |
214 |
12 |
| VCDI |
0 |
3 |
16 |
50 |
94 |
307 |
4042 |
3543 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
18515 |
7422 |
1245 |
379 |
192 |
235 |
32 |
0 |
| OW |
0 |
32 |
206 |
83 |
52 |
53 |
26 |
0 |
| VODI |
0 |
10 |
102 |
141 |
68 |
89 |
52 |
0 |
| ODI |
0 |
2 |
21 |
127 |
56 |
149 |
69 |
7 |
| CDI |
0 |
5 |
12 |
96 |
72 |
214 |
203 |
14 |
| VCDI |
0 |
3 |
18 |
75 |
121 |
359 |
4061 |
3541 |
|
Date: 2021-11-08:
| 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 |
18966 |
6531 |
783 |
676 |
176 |
44 |
31 |
0 |
| OW |
0 |
47 |
141 |
170 |
113 |
51 |
56 |
0 |
| VODI |
0 |
4 |
105 |
134 |
127 |
122 |
110 |
0 |
| ODI |
0 |
1 |
15 |
80 |
113 |
179 |
130 |
0 |
| CDI |
0 |
1 |
0 |
33 |
70 |
323 |
291 |
2 |
| VCDI |
0 |
0 |
0 |
0 |
30 |
390 |
4155 |
3959 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
18966 |
6308 |
615 |
580 |
165 |
50 |
73 |
0 |
| OW |
0 |
187 |
159 |
164 |
75 |
44 |
69 |
0 |
| VODI |
0 |
86 |
202 |
121 |
105 |
99 |
101 |
0 |
| ODI |
0 |
1 |
51 |
105 |
92 |
82 |
91 |
0 |
| CDI |
0 |
2 |
13 |
79 |
75 |
215 |
207 |
6 |
| VCDI |
0 |
0 |
4 |
44 |
117 |
619 |
4232 |
3955 |
|
Date: 2021-11-10:
| 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 |
18141 |
6979 |
1107 |
454 |
184 |
84 |
16 |
0 |
| OW |
0 |
19 |
148 |
130 |
104 |
96 |
42 |
0 |
| VODI |
0 |
4 |
62 |
149 |
153 |
150 |
108 |
0 |
| ODI |
0 |
2 |
5 |
45 |
110 |
140 |
130 |
0 |
| CDI |
0 |
0 |
5 |
28 |
56 |
198 |
248 |
0 |
| VCDI |
0 |
0 |
0 |
17 |
55 |
314 |
4573 |
4103 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
18141 |
6755 |
826 |
328 |
112 |
83 |
37 |
0 |
| OW |
0 |
122 |
240 |
105 |
64 |
42 |
46 |
0 |
| VODI |
0 |
108 |
177 |
182 |
154 |
146 |
65 |
0 |
| ODI |
0 |
16 |
60 |
94 |
127 |
116 |
81 |
0 |
| CDI |
0 |
2 |
23 |
62 |
97 |
169 |
173 |
0 |
| VCDI |
0 |
1 |
1 |
52 |
108 |
426 |
4715 |
4103 |
|
Date: 2021-11-12:
| 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 |
17985 |
6893 |
924 |
394 |
206 |
97 |
30 |
0 |
| OW |
0 |
73 |
145 |
157 |
103 |
108 |
31 |
0 |
| VODI |
0 |
14 |
125 |
125 |
153 |
175 |
78 |
0 |
| ODI |
0 |
2 |
41 |
79 |
89 |
187 |
95 |
5 |
| CDI |
0 |
2 |
15 |
48 |
77 |
192 |
244 |
39 |
| VCDI |
0 |
1 |
3 |
16 |
64 |
395 |
4039 |
4710 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17985 |
6556 |
690 |
298 |
150 |
89 |
50 |
0 |
| OW |
0 |
192 |
142 |
81 |
74 |
44 |
49 |
0 |
| VODI |
0 |
185 |
168 |
147 |
95 |
123 |
42 |
0 |
| ODI |
0 |
43 |
130 |
126 |
133 |
172 |
54 |
0 |
| CDI |
0 |
6 |
85 |
78 |
113 |
185 |
126 |
13 |
| VCDI |
0 |
3 |
38 |
89 |
127 |
541 |
4196 |
4741 |
|
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