Validation of sea ice concentration
Bulletin date: 2021-01-14
Model vs. observations, sea ice class contingency tables
Date: 2021-01-08:
| 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 |
14606 |
6710 |
855 |
553 |
111 |
18 |
3 |
0 |
| OW |
0 |
156 |
324 |
331 |
101 |
48 |
7 |
0 |
| VODI |
0 |
109 |
266 |
488 |
221 |
116 |
19 |
0 |
| ODI |
0 |
35 |
183 |
238 |
212 |
139 |
81 |
0 |
| CDI |
0 |
11 |
84 |
245 |
218 |
269 |
261 |
0 |
| VCDI |
0 |
46 |
74 |
215 |
313 |
640 |
6962 |
2891 |
|
...date precedes bulletin
|
Date: 2021-01-12:
| 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 |
14042 |
6777 |
1371 |
600 |
411 |
66 |
2 |
0 |
| OW |
0 |
54 |
148 |
172 |
213 |
104 |
13 |
0 |
| VODI |
0 |
19 |
133 |
230 |
249 |
408 |
39 |
0 |
| ODI |
0 |
0 |
62 |
190 |
237 |
400 |
110 |
1 |
| CDI |
0 |
0 |
59 |
92 |
157 |
424 |
587 |
15 |
| VCDI |
0 |
0 |
23 |
79 |
178 |
594 |
5690 |
4210 |
|
...date precedes bulletin
|
Date: 2021-01-14:
| 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 |
14028 |
6540 |
1126 |
649 |
310 |
165 |
2 |
0 |
| OW |
0 |
66 |
178 |
205 |
177 |
158 |
10 |
0 |
| VODI |
0 |
34 |
133 |
395 |
264 |
235 |
45 |
0 |
| ODI |
0 |
9 |
96 |
248 |
365 |
234 |
92 |
2 |
| CDI |
0 |
0 |
63 |
152 |
218 |
351 |
503 |
2 |
| VCDI |
0 |
0 |
11 |
76 |
239 |
681 |
6358 |
3739 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14028 |
6557 |
1138 |
650 |
323 |
177 |
3 |
0 |
| OW |
0 |
52 |
165 |
195 |
148 |
154 |
8 |
0 |
| VODI |
0 |
33 |
133 |
398 |
271 |
192 |
53 |
0 |
| ODI |
0 |
7 |
95 |
239 |
376 |
265 |
100 |
2 |
| CDI |
0 |
0 |
60 |
144 |
209 |
344 |
529 |
2 |
| VCDI |
0 |
0 |
16 |
99 |
246 |
692 |
6317 |
3739 |
|
Date: 2021-01-18:
| 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 |
13993 |
6402 |
1118 |
443 |
152 |
154 |
23 |
0 |
| OW |
0 |
22 |
222 |
146 |
88 |
103 |
25 |
0 |
| VODI |
0 |
1 |
108 |
143 |
138 |
148 |
79 |
2 |
| ODI |
0 |
0 |
57 |
100 |
169 |
260 |
291 |
9 |
| CDI |
0 |
0 |
13 |
73 |
163 |
432 |
910 |
27 |
| VCDI |
0 |
0 |
0 |
30 |
145 |
425 |
7324 |
4221 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13993 |
6363 |
1027 |
374 |
199 |
235 |
33 |
0 |
| OW |
0 |
35 |
213 |
136 |
55 |
127 |
29 |
2 |
| VODI |
0 |
19 |
126 |
158 |
101 |
134 |
149 |
15 |
| ODI |
0 |
6 |
80 |
91 |
119 |
207 |
260 |
11 |
| CDI |
0 |
2 |
65 |
108 |
153 |
279 |
610 |
15 |
| VCDI |
0 |
0 |
7 |
68 |
228 |
540 |
7571 |
4216 |
|
Date: 2021-01-20:
| 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 |
14023 |
6362 |
975 |
320 |
129 |
108 |
16 |
0 |
| OW |
0 |
40 |
240 |
168 |
102 |
103 |
9 |
0 |
| VODI |
0 |
7 |
123 |
181 |
119 |
157 |
16 |
0 |
| ODI |
0 |
0 |
44 |
108 |
125 |
184 |
58 |
0 |
| CDI |
0 |
0 |
28 |
97 |
116 |
354 |
358 |
12 |
| VCDI |
0 |
0 |
7 |
93 |
216 |
949 |
7986 |
4226 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14023 |
6283 |
937 |
312 |
167 |
256 |
19 |
0 |
| OW |
0 |
58 |
192 |
130 |
73 |
110 |
9 |
0 |
| VODI |
0 |
39 |
112 |
181 |
116 |
128 |
29 |
16 |
| ODI |
0 |
22 |
48 |
120 |
116 |
219 |
117 |
27 |
| CDI |
0 |
7 |
83 |
110 |
133 |
363 |
502 |
13 |
| VCDI |
0 |
0 |
45 |
114 |
202 |
779 |
7767 |
4182 |
|
Date: 2021-01-22:
| 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 |
14054 |
6319 |
693 |
339 |
67 |
109 |
4 |
0 |
| OW |
0 |
75 |
180 |
187 |
70 |
86 |
7 |
0 |
| VODI |
0 |
19 |
158 |
196 |
100 |
145 |
20 |
0 |
| ODI |
0 |
5 |
71 |
143 |
108 |
170 |
46 |
0 |
| CDI |
0 |
1 |
53 |
160 |
143 |
266 |
287 |
26 |
| VCDI |
0 |
0 |
18 |
86 |
262 |
904 |
8195 |
4387 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14054 |
6247 |
651 |
345 |
125 |
257 |
9 |
0 |
| OW |
0 |
94 |
166 |
150 |
49 |
103 |
15 |
0 |
| VODI |
0 |
52 |
151 |
167 |
85 |
177 |
44 |
0 |
| ODI |
0 |
21 |
87 |
136 |
67 |
134 |
109 |
9 |
| CDI |
0 |
5 |
55 |
167 |
122 |
262 |
373 |
47 |
| VCDI |
0 |
0 |
63 |
146 |
302 |
747 |
8009 |
4357 |
|
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