Validation of sea ice concentration
Bulletin date: 2020-06-04
Model vs. observations, sea ice class contingency tables
Date: 2020-05-29:
| 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 |
14451 |
6733 |
1721 |
1464 |
651 |
192 |
135 |
8 |
| OW |
0 |
11 |
46 |
180 |
261 |
185 |
169 |
4 |
| VODI |
0 |
1 |
34 |
112 |
208 |
357 |
515 |
2 |
| ODI |
0 |
0 |
8 |
68 |
98 |
207 |
1166 |
1 |
| CDI |
0 |
0 |
1 |
40 |
95 |
157 |
2565 |
0 |
| VCDI |
0 |
0 |
3 |
10 |
8 |
12 |
2147 |
4133 |
|
...date precedes bulletin
|
Date: 2020-06-02:
| 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 |
14661 |
6460 |
1907 |
1245 |
716 |
283 |
159 |
12 |
| OW |
0 |
1 |
89 |
177 |
204 |
158 |
128 |
0 |
| VODI |
0 |
0 |
22 |
173 |
206 |
304 |
280 |
9 |
| ODI |
0 |
0 |
12 |
72 |
132 |
349 |
777 |
21 |
| CDI |
0 |
0 |
0 |
17 |
35 |
167 |
2494 |
75 |
| VCDI |
0 |
0 |
0 |
3 |
3 |
5 |
2123 |
4680 |
|
...date precedes bulletin
|
Date: 2020-06-04:
| 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 |
14607 |
6480 |
1988 |
1298 |
612 |
402 |
125 |
12 |
| OW |
0 |
7 |
61 |
223 |
212 |
250 |
103 |
0 |
| VODI |
0 |
0 |
25 |
121 |
209 |
534 |
377 |
5 |
| ODI |
0 |
0 |
10 |
45 |
98 |
287 |
1095 |
4 |
| CDI |
0 |
0 |
0 |
13 |
64 |
158 |
2206 |
6 |
| VCDI |
0 |
0 |
0 |
2 |
6 |
6 |
2102 |
4406 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14607 |
6481 |
1987 |
1363 |
662 |
435 |
123 |
12 |
| OW |
0 |
6 |
58 |
146 |
176 |
211 |
104 |
0 |
| VODI |
0 |
0 |
29 |
136 |
188 |
485 |
385 |
6 |
| ODI |
0 |
0 |
10 |
42 |
112 |
324 |
1070 |
3 |
| CDI |
0 |
0 |
0 |
13 |
57 |
177 |
2225 |
7 |
| VCDI |
0 |
0 |
0 |
2 |
6 |
5 |
2101 |
4405 |
|
Date: 2020-06-08:
| 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 |
15276 |
6067 |
2499 |
1044 |
565 |
271 |
113 |
12 |
| OW |
0 |
3 |
95 |
210 |
197 |
168 |
60 |
0 |
| VODI |
0 |
0 |
18 |
165 |
254 |
450 |
229 |
3 |
| ODI |
0 |
0 |
2 |
35 |
112 |
551 |
660 |
2 |
| CDI |
0 |
0 |
0 |
24 |
50 |
449 |
1350 |
5 |
| VCDI |
0 |
0 |
0 |
2 |
9 |
57 |
2770 |
4382 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15276 |
6067 |
2500 |
1136 |
694 |
394 |
152 |
12 |
| OW |
0 |
3 |
91 |
159 |
182 |
261 |
136 |
0 |
| VODI |
0 |
0 |
19 |
133 |
202 |
682 |
573 |
4 |
| ODI |
0 |
0 |
4 |
25 |
62 |
430 |
844 |
6 |
| CDI |
0 |
0 |
0 |
27 |
39 |
129 |
1892 |
29 |
| VCDI |
0 |
0 |
0 |
0 |
8 |
50 |
1585 |
4353 |
|
Date: 2020-06-10:
| 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 |
15428 |
6150 |
2523 |
1178 |
520 |
171 |
115 |
12 |
| OW |
0 |
4 |
68 |
219 |
251 |
245 |
70 |
0 |
| VODI |
0 |
0 |
21 |
140 |
281 |
446 |
348 |
2 |
| ODI |
0 |
0 |
5 |
31 |
94 |
315 |
964 |
1 |
| CDI |
0 |
0 |
1 |
37 |
74 |
200 |
1521 |
0 |
| VCDI |
0 |
0 |
0 |
6 |
8 |
36 |
2424 |
4250 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15428 |
6151 |
2535 |
1265 |
686 |
307 |
149 |
12 |
| OW |
0 |
3 |
55 |
152 |
233 |
340 |
195 |
0 |
| VODI |
0 |
0 |
22 |
119 |
196 |
480 |
950 |
2 |
| ODI |
0 |
0 |
5 |
37 |
46 |
172 |
870 |
1 |
| CDI |
0 |
0 |
1 |
35 |
64 |
96 |
1893 |
9 |
| VCDI |
0 |
0 |
0 |
3 |
3 |
18 |
1385 |
4241 |
|
Date: 2020-06-12:
| 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 |
15367 |
6666 |
2032 |
1196 |
546 |
291 |
116 |
12 |
| OW |
0 |
2 |
55 |
238 |
341 |
246 |
117 |
0 |
| VODI |
0 |
3 |
21 |
107 |
267 |
494 |
524 |
2 |
| ODI |
0 |
0 |
14 |
35 |
53 |
249 |
919 |
1 |
| CDI |
0 |
0 |
2 |
32 |
48 |
125 |
1669 |
1 |
| VCDI |
0 |
0 |
0 |
3 |
5 |
24 |
1974 |
4362 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15367 |
6666 |
2036 |
1306 |
794 |
553 |
236 |
12 |
| OW |
0 |
4 |
43 |
143 |
251 |
356 |
414 |
0 |
| VODI |
0 |
1 |
34 |
69 |
126 |
373 |
967 |
2 |
| ODI |
0 |
0 |
11 |
63 |
43 |
65 |
769 |
6 |
| CDI |
0 |
0 |
0 |
29 |
44 |
80 |
1848 |
94 |
| VCDI |
0 |
0 |
0 |
1 |
2 |
2 |
1085 |
4264 |
|
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