Validation of sea ice concentration
Bulletin date: 2021-07-01
Model vs. observations, sea ice class contingency tables
Date: 2021-06-25:
| 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 |
15598 |
6495 |
2696 |
1897 |
563 |
82 |
139 |
11 |
| OW |
0 |
0 |
60 |
196 |
258 |
112 |
129 |
0 |
| VODI |
0 |
0 |
12 |
134 |
288 |
206 |
353 |
2 |
| ODI |
0 |
0 |
2 |
89 |
239 |
272 |
499 |
1 |
| CDI |
0 |
0 |
0 |
123 |
306 |
317 |
1647 |
90 |
| VCDI |
0 |
0 |
0 |
9 |
174 |
101 |
2272 |
2787 |
|
...date precedes bulletin
|
Date: 2021-06-29:
| 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 |
16243 |
6707 |
2837 |
1409 |
461 |
39 |
156 |
12 |
| OW |
0 |
0 |
94 |
204 |
238 |
59 |
49 |
0 |
| VODI |
0 |
0 |
29 |
118 |
358 |
352 |
148 |
2 |
| ODI |
0 |
0 |
12 |
93 |
296 |
391 |
378 |
1 |
| CDI |
0 |
0 |
27 |
59 |
146 |
384 |
1777 |
12 |
| VCDI |
0 |
0 |
0 |
3 |
33 |
116 |
2214 |
2702 |
|
...date precedes bulletin
|
Date: 2021-07-01:
| 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 |
16921 |
6751 |
2453 |
1183 |
504 |
55 |
165 |
12 |
| OW |
0 |
1 |
92 |
266 |
211 |
89 |
66 |
0 |
| VODI |
0 |
0 |
42 |
216 |
341 |
316 |
183 |
2 |
| ODI |
0 |
0 |
5 |
108 |
294 |
320 |
464 |
1 |
| CDI |
0 |
0 |
1 |
71 |
159 |
362 |
1847 |
27 |
| VCDI |
0 |
0 |
0 |
2 |
13 |
188 |
1910 |
2518 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16921 |
6751 |
2464 |
1222 |
550 |
67 |
168 |
12 |
| OW |
0 |
1 |
74 |
249 |
183 |
95 |
68 |
0 |
| VODI |
0 |
0 |
49 |
196 |
300 |
305 |
190 |
2 |
| ODI |
0 |
0 |
5 |
108 |
315 |
303 |
408 |
1 |
| CDI |
0 |
0 |
1 |
69 |
158 |
353 |
1869 |
39 |
| VCDI |
0 |
0 |
0 |
2 |
16 |
207 |
1932 |
2506 |
|
Date: 2021-07-05:
| 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 |
17281 |
6570 |
3258 |
948 |
276 |
42 |
171 |
11 |
| OW |
0 |
1 |
147 |
163 |
221 |
101 |
52 |
0 |
| VODI |
0 |
0 |
41 |
185 |
471 |
239 |
119 |
2 |
| ODI |
0 |
0 |
5 |
68 |
181 |
409 |
378 |
1 |
| CDI |
0 |
0 |
0 |
43 |
101 |
556 |
2255 |
163 |
| VCDI |
0 |
0 |
0 |
3 |
1 |
6 |
1140 |
2550 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17281 |
6569 |
3255 |
935 |
350 |
64 |
191 |
11 |
| OW |
0 |
2 |
127 |
185 |
263 |
100 |
102 |
0 |
| VODI |
0 |
0 |
56 |
134 |
257 |
195 |
200 |
2 |
| ODI |
0 |
0 |
7 |
64 |
199 |
337 |
264 |
1 |
| CDI |
0 |
0 |
6 |
86 |
157 |
544 |
1745 |
103 |
| VCDI |
0 |
0 |
0 |
6 |
25 |
113 |
1613 |
2610 |
|
Date: 2021-07-07:
| 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 |
17722 |
6550 |
3191 |
898 |
295 |
91 |
165 |
11 |
| OW |
0 |
0 |
99 |
179 |
176 |
110 |
71 |
0 |
| VODI |
0 |
0 |
23 |
187 |
291 |
284 |
194 |
2 |
| ODI |
0 |
0 |
2 |
75 |
134 |
312 |
385 |
1 |
| CDI |
0 |
0 |
1 |
40 |
107 |
458 |
2023 |
274 |
| VCDI |
0 |
0 |
0 |
4 |
3 |
75 |
1275 |
2451 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17722 |
6550 |
3149 |
894 |
295 |
77 |
224 |
11 |
| OW |
0 |
0 |
107 |
148 |
195 |
172 |
123 |
0 |
| VODI |
0 |
0 |
52 |
147 |
169 |
197 |
176 |
2 |
| ODI |
0 |
0 |
6 |
80 |
153 |
283 |
247 |
1 |
| CDI |
0 |
0 |
2 |
111 |
148 |
422 |
1880 |
232 |
| VCDI |
0 |
0 |
0 |
3 |
46 |
179 |
1463 |
2493 |
|
Date: 2021-07-09:
| 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 |
16706 |
6459 |
3834 |
1626 |
245 |
60 |
147 |
19 |
| OW |
0 |
0 |
71 |
201 |
227 |
73 |
87 |
0 |
| VODI |
0 |
0 |
18 |
189 |
260 |
224 |
200 |
2 |
| ODI |
0 |
0 |
0 |
81 |
135 |
239 |
286 |
1 |
| CDI |
0 |
0 |
0 |
58 |
134 |
452 |
1984 |
219 |
| VCDI |
0 |
0 |
0 |
4 |
25 |
152 |
1366 |
2375 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16706 |
6459 |
3832 |
1548 |
253 |
70 |
235 |
19 |
| OW |
0 |
0 |
61 |
215 |
188 |
91 |
106 |
0 |
| VODI |
0 |
0 |
29 |
162 |
196 |
150 |
167 |
2 |
| ODI |
0 |
0 |
1 |
110 |
168 |
217 |
194 |
1 |
| CDI |
0 |
0 |
0 |
115 |
164 |
439 |
1831 |
430 |
| VCDI |
0 |
0 |
0 |
9 |
57 |
233 |
1537 |
2164 |
|
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