Validation of sea ice concentration
Bulletin date: 2021-06-10
Model vs. observations, sea ice class contingency tables
Date: 2021-06-04:
| 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 |
14256 |
5688 |
1717 |
1746 |
562 |
144 |
161 |
12 |
| OW |
0 |
0 |
42 |
333 |
481 |
139 |
90 |
0 |
| VODI |
0 |
0 |
9 |
225 |
425 |
325 |
289 |
2 |
| ODI |
0 |
0 |
5 |
111 |
265 |
418 |
884 |
1 |
| CDI |
0 |
0 |
5 |
116 |
177 |
574 |
2208 |
16 |
| VCDI |
0 |
0 |
0 |
17 |
28 |
65 |
3106 |
3517 |
|
...date precedes bulletin
|
Date: 2021-06-08:
| 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 |
14679 |
5510 |
2159 |
1547 |
623 |
112 |
184 |
11 |
| OW |
0 |
0 |
124 |
301 |
305 |
107 |
129 |
4 |
| VODI |
0 |
0 |
57 |
178 |
328 |
301 |
302 |
27 |
| ODI |
0 |
0 |
16 |
59 |
172 |
563 |
887 |
32 |
| CDI |
0 |
0 |
49 |
97 |
165 |
461 |
1839 |
24 |
| VCDI |
0 |
0 |
7 |
31 |
73 |
69 |
3710 |
2917 |
|
...date precedes bulletin
|
Date: 2021-06-10:
| 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 |
15021 |
5516 |
2083 |
1732 |
546 |
75 |
202 |
13 |
| OW |
0 |
0 |
50 |
358 |
305 |
122 |
165 |
2 |
| VODI |
0 |
0 |
35 |
165 |
293 |
282 |
369 |
26 |
| ODI |
0 |
0 |
16 |
47 |
143 |
465 |
924 |
26 |
| CDI |
0 |
0 |
24 |
81 |
171 |
442 |
1671 |
28 |
| VCDI |
0 |
0 |
0 |
33 |
47 |
104 |
3185 |
3392 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15021 |
5513 |
2080 |
1749 |
570 |
88 |
237 |
15 |
| OW |
0 |
3 |
53 |
327 |
286 |
125 |
158 |
4 |
| VODI |
0 |
0 |
35 |
184 |
302 |
289 |
395 |
27 |
| ODI |
0 |
0 |
16 |
43 |
133 |
470 |
1035 |
13 |
| CDI |
0 |
0 |
24 |
80 |
164 |
407 |
1426 |
38 |
| VCDI |
0 |
0 |
0 |
33 |
50 |
111 |
3265 |
3390 |
|
Date: 2021-06-14:
| 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 |
15541 |
5671 |
2162 |
1481 |
616 |
102 |
169 |
11 |
| OW |
0 |
7 |
47 |
300 |
223 |
107 |
81 |
0 |
| VODI |
0 |
0 |
21 |
206 |
385 |
330 |
170 |
2 |
| ODI |
0 |
0 |
14 |
105 |
257 |
480 |
691 |
1 |
| CDI |
0 |
0 |
1 |
55 |
251 |
432 |
1323 |
0 |
| VCDI |
0 |
0 |
0 |
45 |
59 |
236 |
3284 |
3293 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15541 |
5675 |
2166 |
1627 |
738 |
177 |
210 |
11 |
| OW |
0 |
3 |
35 |
228 |
203 |
187 |
140 |
0 |
| VODI |
0 |
0 |
29 |
183 |
291 |
294 |
299 |
2 |
| ODI |
0 |
0 |
14 |
69 |
237 |
371 |
610 |
1 |
| CDI |
0 |
0 |
1 |
38 |
253 |
411 |
1358 |
1 |
| VCDI |
0 |
0 |
0 |
47 |
69 |
247 |
3101 |
3292 |
|
Date: 2021-06-16:
| 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 |
15939 |
5938 |
1825 |
1176 |
793 |
272 |
234 |
11 |
| OW |
0 |
0 |
49 |
184 |
279 |
210 |
118 |
0 |
| VODI |
0 |
0 |
34 |
108 |
292 |
368 |
282 |
2 |
| ODI |
0 |
0 |
4 |
28 |
123 |
516 |
550 |
1 |
| CDI |
0 |
0 |
3 |
88 |
99 |
459 |
1358 |
3 |
| VCDI |
0 |
0 |
0 |
3 |
7 |
40 |
2401 |
4362 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15939 |
5907 |
1799 |
1244 |
900 |
383 |
296 |
11 |
| OW |
0 |
17 |
55 |
124 |
203 |
176 |
212 |
0 |
| VODI |
0 |
9 |
39 |
94 |
237 |
418 |
425 |
2 |
| ODI |
0 |
5 |
16 |
29 |
119 |
360 |
438 |
1 |
| CDI |
0 |
0 |
6 |
92 |
127 |
483 |
1299 |
0 |
| VCDI |
0 |
0 |
0 |
4 |
7 |
45 |
2273 |
4365 |
|
Date: 2021-06-18:
| 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 |
15864 |
5933 |
2103 |
1455 |
642 |
251 |
253 |
11 |
| OW |
0 |
3 |
55 |
208 |
210 |
225 |
135 |
0 |
| VODI |
0 |
0 |
38 |
145 |
174 |
348 |
342 |
2 |
| ODI |
0 |
0 |
8 |
52 |
110 |
299 |
584 |
1 |
| CDI |
0 |
0 |
0 |
84 |
145 |
442 |
1388 |
0 |
| VCDI |
0 |
0 |
0 |
13 |
27 |
182 |
3098 |
3329 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15864 |
5909 |
2048 |
1427 |
740 |
389 |
366 |
11 |
| OW |
0 |
15 |
68 |
168 |
133 |
199 |
269 |
0 |
| VODI |
0 |
10 |
47 |
161 |
169 |
313 |
433 |
2 |
| ODI |
0 |
2 |
33 |
72 |
63 |
219 |
423 |
1 |
| CDI |
0 |
0 |
8 |
107 |
158 |
459 |
1284 |
4 |
| VCDI |
0 |
0 |
0 |
22 |
45 |
168 |
3025 |
3325 |
|
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