Validation of sea ice concentration
Bulletin date: 2020-04-30
Model vs. observations, sea ice class contingency tables
Date: 2020-04-24:
| 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 |
11897 |
6101 |
852 |
1259 |
464 |
153 |
37 |
0 |
| OW |
0 |
70 |
140 |
291 |
198 |
137 |
86 |
0 |
| VODI |
0 |
10 |
41 |
229 |
216 |
215 |
250 |
0 |
| ODI |
0 |
7 |
13 |
147 |
154 |
197 |
483 |
1 |
| CDI |
0 |
0 |
8 |
72 |
165 |
395 |
1301 |
11 |
| VCDI |
0 |
0 |
4 |
106 |
135 |
357 |
7282 |
4675 |
|
...date precedes bulletin
|
Date: 2020-04-28:
| 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 |
11517 |
6169 |
1073 |
1536 |
567 |
169 |
43 |
0 |
| OW |
2 |
4 |
129 |
286 |
171 |
154 |
53 |
0 |
| VODI |
3 |
9 |
82 |
230 |
202 |
253 |
200 |
0 |
| ODI |
0 |
3 |
23 |
92 |
210 |
433 |
449 |
2 |
| CDI |
0 |
0 |
15 |
52 |
214 |
841 |
1253 |
6 |
| VCDI |
0 |
0 |
27 |
49 |
86 |
667 |
6864 |
4021 |
|
...date precedes bulletin
|
Date: 2020-04-30:
| 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 |
11500 |
5971 |
1449 |
1096 |
761 |
297 |
74 |
0 |
| OW |
2 |
3 |
101 |
185 |
229 |
246 |
88 |
1 |
| VODI |
3 |
10 |
33 |
173 |
173 |
333 |
243 |
25 |
| ODI |
0 |
2 |
4 |
100 |
138 |
310 |
681 |
49 |
| CDI |
0 |
0 |
0 |
44 |
89 |
376 |
1746 |
59 |
| VCDI |
0 |
0 |
0 |
31 |
42 |
98 |
6124 |
5270 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11495 |
5961 |
1448 |
1124 |
784 |
325 |
84 |
0 |
| OW |
7 |
13 |
88 |
139 |
180 |
217 |
101 |
1 |
| VODI |
3 |
12 |
41 |
171 |
195 |
318 |
212 |
18 |
| ODI |
0 |
0 |
10 |
114 |
131 |
294 |
645 |
48 |
| CDI |
0 |
0 |
0 |
45 |
87 |
389 |
1781 |
78 |
| VCDI |
0 |
0 |
0 |
36 |
55 |
117 |
6133 |
5259 |
|
Date: 2020-05-04:
| 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 |
12377 |
5829 |
1098 |
1048 |
560 |
232 |
70 |
0 |
| OW |
5 |
0 |
96 |
148 |
170 |
185 |
53 |
0 |
| VODI |
11 |
0 |
25 |
146 |
269 |
266 |
206 |
4 |
| ODI |
0 |
0 |
5 |
108 |
173 |
414 |
825 |
11 |
| CDI |
0 |
0 |
1 |
25 |
72 |
263 |
1928 |
48 |
| VCDI |
0 |
0 |
0 |
3 |
43 |
91 |
6002 |
5349 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12376 |
5825 |
1100 |
1102 |
687 |
437 |
162 |
0 |
| OW |
3 |
4 |
92 |
91 |
152 |
144 |
147 |
0 |
| VODI |
14 |
0 |
29 |
132 |
169 |
219 |
358 |
4 |
| ODI |
0 |
0 |
3 |
90 |
119 |
221 |
633 |
16 |
| CDI |
0 |
0 |
1 |
38 |
109 |
310 |
2001 |
65 |
| VCDI |
0 |
0 |
0 |
25 |
51 |
120 |
5783 |
5327 |
|
Date: 2020-05-06:
| 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 |
12430 |
5979 |
1082 |
1416 |
459 |
151 |
38 |
0 |
| OW |
16 |
2 |
84 |
183 |
190 |
134 |
60 |
0 |
| VODI |
0 |
0 |
37 |
238 |
255 |
265 |
226 |
0 |
| ODI |
0 |
0 |
11 |
126 |
188 |
404 |
567 |
4 |
| CDI |
0 |
0 |
3 |
56 |
96 |
416 |
1405 |
5 |
| VCDI |
0 |
0 |
1 |
11 |
30 |
225 |
6940 |
4426 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12432 |
5970 |
1082 |
1461 |
584 |
312 |
131 |
0 |
| OW |
6 |
11 |
88 |
154 |
142 |
131 |
117 |
0 |
| VODI |
8 |
0 |
34 |
179 |
173 |
241 |
307 |
0 |
| ODI |
0 |
0 |
7 |
111 |
143 |
261 |
402 |
3 |
| CDI |
0 |
0 |
5 |
83 |
128 |
394 |
1509 |
7 |
| VCDI |
0 |
0 |
2 |
42 |
48 |
256 |
6770 |
4425 |
|
Date: 2020-05-08:
| 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 |
12115 |
6089 |
1369 |
1253 |
613 |
171 |
51 |
0 |
| OW |
11 |
0 |
116 |
177 |
257 |
141 |
80 |
0 |
| VODI |
0 |
0 |
95 |
187 |
281 |
374 |
181 |
0 |
| ODI |
0 |
0 |
33 |
101 |
210 |
519 |
374 |
2 |
| CDI |
0 |
0 |
19 |
61 |
122 |
402 |
1040 |
4 |
| VCDI |
0 |
0 |
19 |
35 |
72 |
307 |
6910 |
4368 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12114 |
6085 |
1327 |
1288 |
774 |
388 |
140 |
0 |
| OW |
12 |
4 |
114 |
151 |
148 |
184 |
96 |
0 |
| VODI |
0 |
0 |
90 |
125 |
206 |
325 |
158 |
0 |
| ODI |
0 |
0 |
32 |
83 |
142 |
239 |
313 |
1 |
| CDI |
0 |
0 |
34 |
99 |
199 |
424 |
1273 |
5 |
| VCDI |
0 |
0 |
54 |
68 |
86 |
354 |
6656 |
4368 |
|
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