Validation of sea ice concentration - Full domain
Bulletin date: 2025-03-13
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
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 |
|
...date precedes bulletin
|
Date: 2025-03-09:
| 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 |
59268 |
13965 |
331 |
347 |
114 |
12 |
0 |
0 |
| OW |
719 |
1359 |
219 |
407 |
209 |
63 |
1 |
0 |
| VODI |
1833 |
560 |
204 |
610 |
332 |
147 |
18 |
0 |
| ODI |
1759 |
188 |
58 |
536 |
612 |
315 |
46 |
0 |
| CDI |
0 |
108 |
96 |
399 |
794 |
1207 |
466 |
17 |
| VCDI |
0 |
29 |
31 |
263 |
724 |
4186 |
26336 |
61922 |
|
...date precedes bulletin
|
Date: 2025-03-11:
| 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 |
59171 |
14079 |
273 |
292 |
115 |
25 |
0 |
0 |
| OW |
719 |
1423 |
219 |
397 |
166 |
52 |
9 |
0 |
| VODI |
1847 |
459 |
187 |
544 |
601 |
119 |
21 |
0 |
| ODI |
1747 |
102 |
68 |
300 |
731 |
353 |
99 |
0 |
| CDI |
0 |
69 |
49 |
218 |
877 |
1741 |
1119 |
27 |
| VCDI |
0 |
23 |
35 |
172 |
521 |
4131 |
26498 |
61212 |
|
...date precedes bulletin
|
Date: 2025-03-13:
| 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 |
59045 |
13811 |
217 |
272 |
93 |
23 |
0 |
0 |
| OW |
736 |
1417 |
224 |
345 |
151 |
53 |
3 |
0 |
| VODI |
1840 |
479 |
212 |
567 |
487 |
181 |
59 |
0 |
| ODI |
1762 |
136 |
62 |
295 |
637 |
375 |
99 |
0 |
| CDI |
0 |
103 |
62 |
203 |
634 |
1923 |
1033 |
80 |
| VCDI |
0 |
43 |
33 |
163 |
409 |
7101 |
30130 |
55312 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59049 |
13871 |
225 |
290 |
105 |
25 |
0 |
0 |
| OW |
726 |
1338 |
211 |
319 |
138 |
58 |
3 |
0 |
| VODI |
1848 |
503 |
221 |
552 |
496 |
188 |
60 |
0 |
| ODI |
1760 |
134 |
66 |
325 |
632 |
413 |
113 |
0 |
| CDI |
0 |
100 |
55 |
183 |
623 |
1917 |
1138 |
97 |
| VCDI |
0 |
43 |
32 |
176 |
417 |
7055 |
30010 |
55295 |
|
Date: 2025-03-15:
| 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 |
58291 |
13844 |
249 |
315 |
84 |
12 |
0 |
0 |
| OW |
648 |
1562 |
239 |
339 |
205 |
63 |
5 |
0 |
| VODI |
1822 |
494 |
260 |
468 |
559 |
231 |
12 |
0 |
| ODI |
1777 |
124 |
79 |
329 |
577 |
408 |
65 |
0 |
| CDI |
0 |
92 |
19 |
158 |
829 |
2187 |
1284 |
12 |
| VCDI |
0 |
147 |
47 |
195 |
539 |
7648 |
38911 |
45681 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
58290 |
13872 |
258 |
328 |
89 |
10 |
0 |
0 |
| OW |
651 |
1521 |
231 |
333 |
222 |
63 |
6 |
0 |
| VODI |
1824 |
520 |
262 |
461 |
556 |
232 |
9 |
0 |
| ODI |
1773 |
131 |
75 |
346 |
610 |
452 |
67 |
0 |
| CDI |
0 |
78 |
23 |
145 |
791 |
2234 |
1335 |
11 |
| VCDI |
0 |
141 |
44 |
191 |
525 |
7558 |
38860 |
45682 |
|
Date: 2025-03-17:
| 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 |
58420 |
14221 |
173 |
153 |
88 |
13 |
0 |
0 |
| OW |
650 |
1542 |
313 |
413 |
185 |
68 |
16 |
0 |
| VODI |
1826 |
305 |
214 |
583 |
521 |
162 |
9 |
0 |
| ODI |
1770 |
63 |
47 |
242 |
792 |
511 |
22 |
1 |
| CDI |
0 |
28 |
30 |
222 |
1013 |
2893 |
485 |
34 |
| VCDI |
0 |
4 |
7 |
64 |
525 |
9280 |
38634 |
44268 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
58413 |
13645 |
152 |
164 |
100 |
13 |
0 |
0 |
| OW |
653 |
1684 |
248 |
329 |
159 |
81 |
14 |
0 |
| VODI |
1816 |
572 |
235 |
468 |
406 |
188 |
17 |
0 |
| ODI |
1784 |
147 |
69 |
291 |
681 |
369 |
35 |
0 |
| CDI |
0 |
81 |
47 |
271 |
1081 |
2471 |
1044 |
21 |
| VCDI |
0 |
34 |
33 |
154 |
697 |
9805 |
38056 |
44282 |
|
Date: 2025-03-19:
| 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 |
58481 |
13922 |
183 |
174 |
63 |
0 |
0 |
0 |
| OW |
617 |
1249 |
281 |
501 |
232 |
31 |
13 |
0 |
| VODI |
1816 |
287 |
164 |
515 |
622 |
157 |
9 |
0 |
| ODI |
1784 |
59 |
59 |
269 |
742 |
630 |
27 |
0 |
| CDI |
0 |
30 |
23 |
151 |
956 |
3605 |
1121 |
11 |
| VCDI |
0 |
33 |
21 |
110 |
761 |
9022 |
39271 |
42808 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
58479 |
13246 |
167 |
174 |
78 |
0 |
0 |
0 |
| OW |
617 |
1581 |
241 |
467 |
221 |
32 |
11 |
0 |
| VODI |
1812 |
480 |
191 |
462 |
635 |
278 |
6 |
0 |
| ODI |
1790 |
139 |
60 |
277 |
617 |
593 |
23 |
0 |
| CDI |
0 |
56 |
39 |
200 |
876 |
3060 |
1313 |
8 |
| VCDI |
0 |
78 |
33 |
140 |
949 |
9482 |
39088 |
42811 |
|
Date: 2025-03-21:
| 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 |
58223 |
13777 |
238 |
210 |
62 |
6 |
1 |
0 |
| OW |
613 |
1209 |
231 |
502 |
230 |
65 |
8 |
0 |
| VODI |
1810 |
365 |
164 |
551 |
658 |
137 |
16 |
0 |
| ODI |
1792 |
101 |
65 |
258 |
732 |
522 |
35 |
2 |
| CDI |
0 |
53 |
38 |
153 |
1073 |
3105 |
1653 |
5 |
| VCDI |
0 |
30 |
29 |
103 |
630 |
7731 |
37207 |
46417 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
58221 |
13318 |
244 |
342 |
106 |
10 |
1 |
0 |
| OW |
612 |
1278 |
206 |
469 |
308 |
93 |
12 |
0 |
| VODI |
1805 |
551 |
113 |
332 |
603 |
212 |
16 |
0 |
| ODI |
1800 |
219 |
79 |
257 |
539 |
501 |
46 |
4 |
| CDI |
0 |
83 |
70 |
225 |
1071 |
2420 |
1523 |
30 |
| VCDI |
0 |
86 |
53 |
152 |
758 |
8330 |
37322 |
46390 |
|
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