Validation of sea ice concentration - Full domain
Bulletin date: 2025-01-23
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-01-17:
| 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 |
62918 |
14026 |
162 |
157 |
11 |
2 |
3 |
0 |
| OW |
804 |
1373 |
197 |
295 |
138 |
37 |
7 |
0 |
| VODI |
1814 |
595 |
183 |
397 |
328 |
147 |
52 |
0 |
| ODI |
1875 |
199 |
72 |
236 |
434 |
292 |
128 |
0 |
| CDI |
0 |
148 |
70 |
240 |
562 |
1178 |
1073 |
33 |
| VCDI |
0 |
28 |
33 |
104 |
484 |
2434 |
26595 |
60946 |
|
...date precedes bulletin
|
Date: 2025-01-19:
| 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 |
62633 |
13730 |
180 |
117 |
15 |
2 |
0 |
0 |
| OW |
967 |
1152 |
170 |
311 |
139 |
34 |
0 |
0 |
| VODI |
1823 |
638 |
131 |
409 |
354 |
131 |
7 |
0 |
| ODI |
1887 |
266 |
93 |
278 |
411 |
283 |
41 |
1 |
| CDI |
0 |
151 |
97 |
268 |
600 |
1091 |
831 |
8 |
| VCDI |
0 |
5 |
18 |
140 |
533 |
3689 |
28917 |
58259 |
|
...date precedes bulletin
|
Date: 2025-01-21:
| 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 |
62492 |
13993 |
268 |
82 |
14 |
1 |
0 |
0 |
| OW |
825 |
918 |
218 |
307 |
93 |
20 |
2 |
0 |
| VODI |
1796 |
325 |
156 |
454 |
429 |
87 |
14 |
0 |
| ODI |
1903 |
175 |
88 |
256 |
520 |
379 |
47 |
0 |
| CDI |
0 |
59 |
37 |
193 |
567 |
1625 |
1164 |
2 |
| VCDI |
0 |
1 |
6 |
40 |
255 |
4135 |
34699 |
52165 |
|
...date precedes bulletin
|
Date: 2025-01-23:
| 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 |
62356 |
13661 |
94 |
89 |
27 |
3 |
0 |
0 |
| OW |
844 |
1006 |
234 |
225 |
76 |
26 |
6 |
0 |
| VODI |
1794 |
469 |
141 |
431 |
304 |
84 |
18 |
0 |
| ODI |
1919 |
230 |
63 |
193 |
487 |
361 |
86 |
0 |
| CDI |
0 |
129 |
63 |
202 |
610 |
1555 |
1216 |
5 |
| VCDI |
0 |
33 |
17 |
67 |
464 |
3602 |
33883 |
53737 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
62370 |
13754 |
107 |
94 |
22 |
2 |
0 |
0 |
| OW |
832 |
940 |
226 |
241 |
89 |
27 |
6 |
0 |
| VODI |
1793 |
464 |
135 |
413 |
318 |
91 |
16 |
0 |
| ODI |
1918 |
214 |
63 |
196 |
470 |
375 |
90 |
0 |
| CDI |
0 |
120 |
60 |
194 |
603 |
1596 |
1292 |
7 |
| VCDI |
0 |
36 |
21 |
69 |
466 |
3540 |
33805 |
53735 |
|
Date: 2025-01-25:
| 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 |
60376 |
15193 |
112 |
90 |
27 |
10 |
1 |
0 |
| OW |
792 |
1219 |
210 |
231 |
80 |
28 |
24 |
0 |
| VODI |
1795 |
638 |
146 |
403 |
370 |
83 |
23 |
0 |
| ODI |
1923 |
244 |
90 |
207 |
423 |
373 |
71 |
0 |
| CDI |
0 |
127 |
61 |
200 |
465 |
1416 |
1343 |
0 |
| VCDI |
0 |
25 |
39 |
147 |
496 |
4326 |
40378 |
46605 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
60378 |
15266 |
121 |
100 |
29 |
8 |
1 |
0 |
| OW |
789 |
1192 |
205 |
239 |
91 |
35 |
26 |
0 |
| VODI |
1797 |
610 |
139 |
388 |
366 |
91 |
20 |
0 |
| ODI |
1922 |
244 |
92 |
211 |
429 |
391 |
76 |
0 |
| CDI |
0 |
111 |
64 |
196 |
463 |
1416 |
1418 |
2 |
| VCDI |
0 |
23 |
37 |
144 |
483 |
4295 |
40299 |
46603 |
|
Date: 2025-01-27:
| 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 |
59832 |
15950 |
167 |
158 |
24 |
19 |
2 |
0 |
| OW |
680 |
1841 |
211 |
223 |
72 |
38 |
31 |
0 |
| VODI |
1781 |
401 |
266 |
554 |
373 |
89 |
29 |
0 |
| ODI |
1925 |
62 |
56 |
226 |
528 |
296 |
76 |
0 |
| CDI |
0 |
13 |
27 |
174 |
549 |
1399 |
664 |
4 |
| VCDI |
0 |
3 |
18 |
67 |
287 |
4283 |
38096 |
49316 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59832 |
15512 |
165 |
149 |
26 |
22 |
6 |
0 |
| OW |
679 |
1514 |
158 |
192 |
66 |
36 |
36 |
0 |
| VODI |
1771 |
795 |
203 |
347 |
284 |
103 |
35 |
0 |
| ODI |
1936 |
285 |
104 |
287 |
379 |
274 |
92 |
0 |
| CDI |
0 |
143 |
69 |
242 |
560 |
1047 |
823 |
0 |
| VCDI |
0 |
21 |
46 |
185 |
518 |
4642 |
37906 |
49320 |
|
Date: 2025-01-29:
| 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 |
61450 |
14705 |
152 |
112 |
20 |
9 |
0 |
0 |
| OW |
727 |
1607 |
202 |
255 |
71 |
39 |
10 |
0 |
| VODI |
1776 |
707 |
204 |
497 |
291 |
66 |
16 |
0 |
| ODI |
1931 |
161 |
92 |
291 |
343 |
174 |
70 |
0 |
| CDI |
0 |
52 |
50 |
181 |
536 |
746 |
747 |
0 |
| VCDI |
0 |
22 |
21 |
126 |
438 |
3624 |
35756 |
52533 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
61448 |
13887 |
142 |
117 |
30 |
17 |
10 |
0 |
| OW |
725 |
1496 |
140 |
192 |
72 |
38 |
20 |
0 |
| VODI |
1762 |
1054 |
169 |
404 |
244 |
81 |
33 |
0 |
| ODI |
1949 |
501 |
99 |
232 |
308 |
226 |
125 |
0 |
| CDI |
0 |
241 |
113 |
305 |
447 |
597 |
745 |
0 |
| VCDI |
0 |
75 |
58 |
212 |
598 |
3699 |
35666 |
52533 |
|
Date: 2025-01-31:
| 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 |
61855 |
14113 |
175 |
88 |
24 |
10 |
1 |
0 |
| OW |
665 |
1746 |
258 |
203 |
54 |
15 |
1 |
0 |
| VODI |
1780 |
869 |
246 |
540 |
226 |
76 |
0 |
0 |
| ODI |
1927 |
245 |
93 |
327 |
409 |
161 |
35 |
0 |
| CDI |
0 |
112 |
114 |
333 |
592 |
719 |
467 |
19 |
| VCDI |
0 |
15 |
30 |
250 |
742 |
4260 |
32321 |
54694 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
61857 |
13267 |
164 |
112 |
21 |
4 |
1 |
0 |
| OW |
659 |
1700 |
210 |
196 |
62 |
17 |
2 |
0 |
| VODI |
1758 |
1149 |
209 |
422 |
202 |
80 |
8 |
0 |
| ODI |
1953 |
534 |
138 |
301 |
328 |
183 |
63 |
0 |
| CDI |
0 |
334 |
111 |
351 |
554 |
677 |
509 |
1 |
| VCDI |
0 |
116 |
84 |
359 |
880 |
4280 |
32242 |
54712 |
|
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