Validation of sea ice concentration
Bulletin date: 2021-06-03
Model vs. observations, sea ice class contingency tables
Date: 2021-05-28:
| 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 |
13618 |
6038 |
1314 |
1079 |
478 |
214 |
204 |
12 |
| OW |
0 |
0 |
167 |
322 |
256 |
110 |
109 |
0 |
| VODI |
0 |
0 |
81 |
258 |
327 |
267 |
292 |
2 |
| ODI |
0 |
0 |
30 |
169 |
373 |
432 |
539 |
1 |
| CDI |
0 |
0 |
11 |
155 |
311 |
456 |
2445 |
4 |
| VCDI |
0 |
0 |
4 |
45 |
49 |
77 |
4144 |
3766 |
|
...date precedes bulletin
|
Date: 2021-06-01:
| 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 |
14004 |
5873 |
1308 |
1471 |
729 |
190 |
157 |
11 |
| OW |
0 |
0 |
35 |
384 |
308 |
122 |
116 |
0 |
| VODI |
0 |
0 |
15 |
271 |
499 |
300 |
259 |
2 |
| ODI |
0 |
0 |
19 |
87 |
316 |
395 |
671 |
2 |
| CDI |
0 |
0 |
18 |
78 |
138 |
516 |
2530 |
18 |
| VCDI |
0 |
0 |
1 |
72 |
67 |
159 |
3705 |
3313 |
|
...date precedes bulletin
|
Date: 2021-06-03:
| 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 |
14463 |
5825 |
1689 |
1081 |
656 |
185 |
156 |
11 |
| OW |
0 |
0 |
66 |
375 |
356 |
216 |
108 |
0 |
| VODI |
0 |
0 |
25 |
151 |
497 |
335 |
264 |
2 |
| ODI |
0 |
0 |
23 |
70 |
252 |
458 |
822 |
1 |
| CDI |
0 |
0 |
5 |
81 |
124 |
582 |
2401 |
40 |
| VCDI |
0 |
0 |
0 |
39 |
76 |
109 |
3434 |
3181 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14463 |
5825 |
1715 |
1190 |
745 |
228 |
177 |
11 |
| OW |
0 |
0 |
42 |
267 |
296 |
190 |
106 |
0 |
| VODI |
0 |
0 |
25 |
153 |
486 |
330 |
292 |
2 |
| ODI |
0 |
0 |
23 |
68 |
236 |
463 |
800 |
1 |
| CDI |
0 |
0 |
3 |
74 |
119 |
556 |
2278 |
21 |
| VCDI |
0 |
0 |
0 |
45 |
79 |
118 |
3532 |
3200 |
|
Date: 2021-06-07:
| 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 |
14689 |
5509 |
2001 |
1388 |
653 |
148 |
179 |
11 |
| OW |
0 |
0 |
111 |
287 |
285 |
116 |
117 |
4 |
| VODI |
0 |
0 |
84 |
236 |
358 |
276 |
258 |
25 |
| ODI |
0 |
0 |
17 |
82 |
213 |
493 |
903 |
35 |
| CDI |
0 |
0 |
47 |
101 |
175 |
365 |
2202 |
30 |
| VCDI |
0 |
0 |
20 |
56 |
94 |
98 |
3552 |
2941 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14689 |
5509 |
2004 |
1487 |
776 |
210 |
283 |
16 |
| OW |
0 |
0 |
86 |
233 |
242 |
146 |
204 |
14 |
| VODI |
0 |
0 |
77 |
177 |
252 |
230 |
464 |
28 |
| ODI |
0 |
0 |
39 |
79 |
199 |
258 |
941 |
34 |
| CDI |
0 |
0 |
45 |
105 |
207 |
540 |
1748 |
76 |
| VCDI |
0 |
0 |
29 |
69 |
102 |
112 |
3571 |
2878 |
|
Date: 2021-06-09:
| 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 |
14827 |
5533 |
2079 |
1774 |
502 |
73 |
204 |
11 |
| OW |
0 |
0 |
69 |
331 |
351 |
102 |
156 |
4 |
| VODI |
0 |
0 |
50 |
170 |
306 |
281 |
336 |
27 |
| ODI |
0 |
0 |
11 |
65 |
165 |
504 |
906 |
30 |
| CDI |
0 |
0 |
38 |
73 |
157 |
504 |
1665 |
32 |
| VCDI |
0 |
0 |
2 |
5 |
11 |
186 |
3447 |
3172 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14827 |
5533 |
2046 |
1852 |
644 |
124 |
322 |
18 |
| OW |
0 |
0 |
58 |
204 |
223 |
113 |
243 |
16 |
| VODI |
0 |
0 |
70 |
167 |
243 |
208 |
547 |
27 |
| ODI |
0 |
0 |
33 |
99 |
170 |
313 |
769 |
36 |
| CDI |
0 |
0 |
35 |
84 |
197 |
685 |
1514 |
52 |
| VCDI |
0 |
0 |
7 |
12 |
15 |
207 |
3319 |
3127 |
|
Date: 2021-06-11:
| 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 |
15047 |
5547 |
2204 |
1477 |
723 |
180 |
215 |
11 |
| OW |
0 |
1 |
53 |
223 |
327 |
157 |
179 |
1 |
| VODI |
0 |
0 |
39 |
114 |
301 |
309 |
401 |
16 |
| ODI |
0 |
0 |
19 |
47 |
142 |
370 |
947 |
23 |
| CDI |
0 |
0 |
19 |
65 |
156 |
392 |
1776 |
22 |
| VCDI |
0 |
0 |
0 |
13 |
29 |
41 |
2499 |
4074 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15047 |
5548 |
2172 |
1512 |
825 |
246 |
394 |
20 |
| OW |
0 |
0 |
51 |
134 |
207 |
151 |
266 |
8 |
| VODI |
0 |
0 |
52 |
127 |
252 |
251 |
597 |
17 |
| ODI |
0 |
0 |
42 |
72 |
169 |
252 |
712 |
24 |
| CDI |
0 |
0 |
12 |
67 |
169 |
466 |
1391 |
140 |
| VCDI |
0 |
0 |
5 |
27 |
56 |
83 |
2657 |
3938 |
|
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