Validation of sea ice concentration - Full domain
Bulletin date: 2025-02-27
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-02-21:
| 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 |
59614 |
14799 |
133 |
134 |
26 |
0 |
0 |
0 |
| OW |
748 |
1370 |
214 |
300 |
110 |
11 |
0 |
0 |
| VODI |
1843 |
528 |
178 |
351 |
394 |
111 |
7 |
0 |
| ODI |
1746 |
214 |
98 |
287 |
360 |
430 |
77 |
2 |
| CDI |
0 |
114 |
89 |
247 |
570 |
1040 |
1141 |
19 |
| VCDI |
0 |
41 |
19 |
174 |
619 |
4129 |
32342 |
56181 |
|
...date precedes bulletin
|
Date: 2025-02-23:
| 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 |
60973 |
13287 |
138 |
91 |
29 |
0 |
0 |
0 |
| OW |
814 |
1416 |
167 |
241 |
125 |
24 |
10 |
0 |
| VODI |
1840 |
545 |
236 |
422 |
270 |
91 |
29 |
0 |
| ODI |
1749 |
227 |
100 |
410 |
484 |
277 |
49 |
0 |
| CDI |
0 |
147 |
75 |
292 |
804 |
1474 |
481 |
32 |
| VCDI |
0 |
58 |
50 |
197 |
513 |
5352 |
31467 |
55824 |
|
...date precedes bulletin
|
Date: 2025-02-25:
| 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 |
61342 |
12892 |
128 |
143 |
30 |
4 |
0 |
0 |
| OW |
737 |
1556 |
271 |
289 |
56 |
29 |
11 |
0 |
| VODI |
1855 |
516 |
285 |
736 |
321 |
66 |
27 |
0 |
| ODI |
1731 |
139 |
90 |
477 |
754 |
209 |
39 |
0 |
| CDI |
0 |
46 |
30 |
262 |
957 |
1610 |
531 |
14 |
| VCDI |
0 |
76 |
29 |
134 |
622 |
4877 |
30073 |
56816 |
|
...date precedes bulletin
|
Date: 2025-02-27:
| 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 |
60055 |
14109 |
121 |
91 |
14 |
2 |
0 |
0 |
| OW |
738 |
1609 |
264 |
256 |
83 |
20 |
7 |
0 |
| VODI |
1849 |
724 |
263 |
728 |
287 |
66 |
6 |
0 |
| ODI |
1737 |
226 |
106 |
376 |
612 |
228 |
34 |
0 |
| CDI |
0 |
107 |
56 |
313 |
937 |
1505 |
552 |
6 |
| VCDI |
0 |
68 |
49 |
249 |
720 |
5964 |
24929 |
60744 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
60055 |
14174 |
129 |
97 |
9 |
1 |
0 |
0 |
| OW |
738 |
1551 |
266 |
258 |
89 |
19 |
6 |
0 |
| VODI |
1851 |
716 |
245 |
718 |
274 |
77 |
6 |
0 |
| ODI |
1735 |
226 |
107 |
381 |
607 |
222 |
48 |
0 |
| CDI |
0 |
114 |
66 |
320 |
983 |
1501 |
561 |
8 |
| VCDI |
0 |
62 |
46 |
239 |
691 |
5965 |
24907 |
60742 |
|
Date: 2025-03-01:
| 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 |
59973 |
13893 |
327 |
201 |
39 |
6 |
0 |
0 |
| OW |
722 |
1514 |
265 |
374 |
109 |
16 |
0 |
0 |
| VODI |
1843 |
676 |
274 |
610 |
384 |
62 |
8 |
0 |
| ODI |
1745 |
200 |
103 |
383 |
528 |
177 |
25 |
0 |
| CDI |
0 |
113 |
43 |
276 |
797 |
1141 |
388 |
12 |
| VCDI |
0 |
102 |
47 |
179 |
747 |
6263 |
26470 |
59775 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59974 |
13981 |
342 |
236 |
38 |
6 |
0 |
0 |
| OW |
721 |
1432 |
244 |
343 |
124 |
25 |
1 |
0 |
| VODI |
1844 |
642 |
281 |
625 |
389 |
74 |
10 |
0 |
| ODI |
1744 |
225 |
93 |
365 |
494 |
175 |
22 |
0 |
| CDI |
0 |
120 |
56 |
278 |
798 |
1083 |
410 |
13 |
| VCDI |
0 |
98 |
43 |
176 |
761 |
6302 |
26448 |
59774 |
|
Date: 2025-03-03:
| 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 |
59320 |
14828 |
226 |
246 |
68 |
5 |
0 |
0 |
| OW |
692 |
1602 |
291 |
425 |
145 |
18 |
1 |
0 |
| VODI |
1851 |
491 |
249 |
849 |
476 |
74 |
6 |
0 |
| ODI |
1735 |
87 |
61 |
331 |
753 |
248 |
46 |
0 |
| CDI |
0 |
50 |
31 |
203 |
651 |
1750 |
415 |
0 |
| VCDI |
0 |
24 |
27 |
112 |
498 |
5883 |
24930 |
61112 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59320 |
14428 |
232 |
325 |
75 |
17 |
0 |
0 |
| OW |
689 |
1459 |
208 |
351 |
185 |
21 |
2 |
0 |
| VODI |
1835 |
605 |
206 |
519 |
450 |
97 |
11 |
0 |
| ODI |
1754 |
289 |
101 |
389 |
428 |
121 |
43 |
0 |
| CDI |
0 |
172 |
71 |
323 |
697 |
995 |
316 |
1 |
| VCDI |
0 |
129 |
67 |
259 |
756 |
6727 |
25026 |
61111 |
|
Date: 2025-03-05:
| 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 |
60063 |
13840 |
281 |
338 |
110 |
25 |
0 |
0 |
| OW |
688 |
1251 |
237 |
470 |
179 |
35 |
3 |
0 |
| VODI |
1836 |
413 |
195 |
641 |
486 |
81 |
14 |
0 |
| ODI |
1755 |
143 |
66 |
364 |
681 |
232 |
23 |
1 |
| CDI |
0 |
52 |
51 |
217 |
779 |
1183 |
309 |
23 |
| VCDI |
0 |
41 |
33 |
185 |
824 |
6227 |
25793 |
60642 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
60072 |
13088 |
279 |
405 |
134 |
35 |
1 |
0 |
| OW |
678 |
1435 |
213 |
376 |
164 |
28 |
8 |
0 |
| VODI |
1829 |
679 |
174 |
545 |
369 |
105 |
22 |
0 |
| ODI |
1763 |
256 |
61 |
318 |
548 |
163 |
22 |
0 |
| CDI |
0 |
188 |
78 |
271 |
822 |
859 |
208 |
1 |
| VCDI |
0 |
94 |
58 |
300 |
1022 |
6593 |
25881 |
60665 |
|
Date: 2025-03-07:
| 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 |
59544 |
14224 |
234 |
261 |
89 |
28 |
0 |
0 |
| OW |
727 |
1335 |
245 |
378 |
140 |
21 |
11 |
0 |
| VODI |
1832 |
578 |
248 |
565 |
403 |
101 |
20 |
0 |
| ODI |
1760 |
157 |
83 |
336 |
520 |
211 |
31 |
0 |
| CDI |
0 |
68 |
49 |
297 |
653 |
1226 |
443 |
15 |
| VCDI |
0 |
103 |
62 |
302 |
660 |
5762 |
31255 |
55833 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59553 |
13705 |
240 |
233 |
114 |
38 |
1 |
0 |
| OW |
715 |
1496 |
222 |
331 |
138 |
41 |
13 |
0 |
| VODI |
1828 |
626 |
219 |
528 |
374 |
107 |
20 |
0 |
| ODI |
1767 |
233 |
79 |
349 |
434 |
209 |
49 |
2 |
| CDI |
0 |
234 |
70 |
255 |
664 |
938 |
346 |
15 |
| VCDI |
0 |
171 |
91 |
443 |
741 |
6016 |
31331 |
55831 |
|
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