Validation of sea ice concentration
Bulletin date: 2020-12-03
Model vs. observations, sea ice class contingency tables
Date: 2020-11-27:
| 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 |
17813 |
7917 |
1164 |
428 |
161 |
49 |
64 |
0 |
| OW |
0 |
35 |
211 |
199 |
128 |
86 |
33 |
0 |
| VODI |
0 |
16 |
85 |
161 |
125 |
152 |
51 |
0 |
| ODI |
0 |
5 |
24 |
116 |
74 |
157 |
81 |
0 |
| CDI |
0 |
5 |
12 |
60 |
95 |
193 |
317 |
0 |
| VCDI |
0 |
1 |
15 |
40 |
53 |
184 |
5008 |
2841 |
|
...date precedes bulletin
|
Date: 2020-12-01:
| 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 |
18047 |
8030 |
811 |
455 |
99 |
10 |
20 |
0 |
| OW |
0 |
108 |
174 |
184 |
78 |
22 |
19 |
0 |
| VODI |
0 |
22 |
112 |
191 |
140 |
56 |
29 |
0 |
| ODI |
0 |
1 |
65 |
160 |
169 |
127 |
52 |
0 |
| CDI |
0 |
0 |
33 |
97 |
132 |
186 |
181 |
0 |
| VCDI |
0 |
0 |
22 |
81 |
82 |
351 |
4051 |
3762 |
|
...date precedes bulletin
|
Date: 2020-12-03:
| 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 |
17630 |
7538 |
1062 |
495 |
216 |
140 |
22 |
0 |
| OW |
0 |
206 |
201 |
151 |
128 |
95 |
10 |
0 |
| VODI |
0 |
12 |
170 |
116 |
160 |
147 |
29 |
0 |
| ODI |
0 |
0 |
70 |
115 |
148 |
147 |
48 |
0 |
| CDI |
0 |
0 |
30 |
76 |
107 |
319 |
112 |
21 |
| VCDI |
0 |
0 |
15 |
66 |
147 |
491 |
3569 |
4150 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17630 |
7572 |
1090 |
532 |
246 |
159 |
28 |
0 |
| OW |
0 |
155 |
154 |
129 |
125 |
89 |
4 |
0 |
| VODI |
0 |
27 |
175 |
101 |
148 |
155 |
36 |
0 |
| ODI |
0 |
2 |
78 |
116 |
132 |
142 |
45 |
0 |
| CDI |
0 |
0 |
31 |
78 |
111 |
294 |
91 |
25 |
| VCDI |
0 |
0 |
20 |
63 |
144 |
500 |
3586 |
4146 |
|
Date: 2020-12-07:
| 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 |
17462 |
7427 |
618 |
458 |
167 |
132 |
29 |
0 |
| OW |
4 |
86 |
98 |
175 |
120 |
111 |
60 |
0 |
| VODI |
0 |
24 |
58 |
158 |
157 |
189 |
103 |
0 |
| ODI |
0 |
8 |
15 |
82 |
160 |
358 |
148 |
0 |
| CDI |
0 |
5 |
13 |
29 |
139 |
473 |
389 |
0 |
| VCDI |
0 |
0 |
9 |
17 |
57 |
390 |
4518 |
3713 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17466 |
7113 |
499 |
410 |
231 |
221 |
106 |
0 |
| OW |
0 |
277 |
88 |
120 |
83 |
101 |
91 |
0 |
| VODI |
0 |
128 |
148 |
168 |
124 |
249 |
152 |
0 |
| ODI |
0 |
13 |
40 |
104 |
113 |
229 |
154 |
0 |
| CDI |
0 |
17 |
16 |
81 |
137 |
358 |
225 |
0 |
| VCDI |
0 |
2 |
20 |
36 |
112 |
495 |
4519 |
3713 |
|
Date: 2020-12-09:
| 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 |
17141 |
7716 |
657 |
272 |
150 |
96 |
13 |
0 |
| OW |
0 |
103 |
127 |
150 |
137 |
89 |
24 |
0 |
| VODI |
0 |
24 |
66 |
122 |
241 |
165 |
47 |
0 |
| ODI |
0 |
6 |
24 |
62 |
153 |
246 |
141 |
0 |
| CDI |
0 |
5 |
11 |
41 |
175 |
503 |
389 |
0 |
| VCDI |
0 |
2 |
5 |
22 |
65 |
498 |
5086 |
3385 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17138 |
7446 |
545 |
210 |
184 |
164 |
40 |
0 |
| OW |
3 |
265 |
141 |
104 |
118 |
126 |
51 |
0 |
| VODI |
0 |
109 |
104 |
140 |
160 |
165 |
127 |
0 |
| ODI |
0 |
23 |
57 |
94 |
166 |
213 |
217 |
0 |
| CDI |
0 |
5 |
32 |
81 |
183 |
319 |
251 |
0 |
| VCDI |
0 |
8 |
11 |
40 |
110 |
610 |
5014 |
3385 |
|
Date: 2020-12-11:
| 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 |
16914 |
7280 |
1051 |
464 |
173 |
50 |
6 |
0 |
| OW |
0 |
22 |
227 |
158 |
123 |
81 |
26 |
0 |
| VODI |
0 |
1 |
136 |
157 |
154 |
103 |
89 |
0 |
| ODI |
0 |
0 |
50 |
90 |
114 |
151 |
175 |
0 |
| CDI |
0 |
0 |
13 |
82 |
172 |
237 |
450 |
0 |
| VCDI |
0 |
0 |
0 |
17 |
114 |
560 |
5007 |
3712 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16904 |
6925 |
813 |
404 |
162 |
113 |
60 |
0 |
| OW |
9 |
201 |
151 |
114 |
94 |
56 |
64 |
0 |
| VODI |
1 |
172 |
278 |
171 |
133 |
84 |
151 |
0 |
| ODI |
0 |
5 |
173 |
117 |
134 |
121 |
192 |
0 |
| CDI |
0 |
0 |
53 |
92 |
143 |
242 |
421 |
0 |
| VCDI |
0 |
0 |
9 |
70 |
184 |
566 |
4865 |
3712 |
|
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