Validation of sea ice concentration - Full domain
Bulletin date: 2025-01-02
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2024-12-27:
| 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 |
68486 |
11123 |
86 |
77 |
29 |
0 |
0 |
0 |
| OW |
952 |
2105 |
212 |
287 |
84 |
20 |
0 |
0 |
| VODI |
1983 |
1015 |
261 |
616 |
541 |
151 |
5 |
0 |
| ODI |
1666 |
362 |
120 |
532 |
798 |
509 |
42 |
0 |
| CDI |
0 |
274 |
137 |
434 |
938 |
1584 |
945 |
4 |
| VCDI |
0 |
207 |
61 |
193 |
877 |
3605 |
30054 |
49435 |
|
...date precedes bulletin
|
Date: 2024-12-29:
| 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 |
67793 |
11608 |
96 |
78 |
10 |
1 |
0 |
0 |
| OW |
896 |
2029 |
266 |
249 |
120 |
47 |
0 |
0 |
| VODI |
1998 |
966 |
273 |
783 |
534 |
122 |
23 |
0 |
| ODI |
1686 |
362 |
132 |
355 |
846 |
394 |
110 |
0 |
| CDI |
21 |
203 |
96 |
283 |
964 |
2227 |
967 |
9 |
| VCDI |
15 |
203 |
62 |
172 |
414 |
3660 |
27121 |
52616 |
|
...date precedes bulletin
|
Date: 2024-12-31:
| 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 |
66255 |
13907 |
148 |
82 |
3 |
0 |
0 |
0 |
| OW |
845 |
1636 |
412 |
599 |
137 |
19 |
0 |
0 |
| VODI |
1989 |
374 |
252 |
822 |
708 |
140 |
17 |
0 |
| ODI |
1656 |
141 |
70 |
403 |
1100 |
379 |
74 |
0 |
| CDI |
0 |
102 |
63 |
302 |
934 |
1786 |
976 |
6 |
| VCDI |
0 |
11 |
18 |
108 |
547 |
3460 |
29458 |
50871 |
|
...date precedes bulletin
|
Date: 2025-01-02:
| 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 |
67704 |
12145 |
191 |
124 |
5 |
0 |
0 |
0 |
| OW |
866 |
1565 |
298 |
587 |
264 |
39 |
0 |
0 |
| VODI |
1974 |
638 |
209 |
467 |
442 |
310 |
39 |
0 |
| ODI |
1678 |
251 |
106 |
380 |
447 |
570 |
253 |
0 |
| CDI |
0 |
193 |
103 |
299 |
699 |
1806 |
1050 |
15 |
| VCDI |
0 |
175 |
95 |
325 |
723 |
5358 |
32614 |
45803 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67747 |
12751 |
273 |
239 |
35 |
0 |
0 |
0 |
| OW |
831 |
1158 |
268 |
600 |
379 |
68 |
2 |
0 |
| VODI |
2000 |
612 |
195 |
452 |
442 |
407 |
60 |
0 |
| ODI |
1644 |
193 |
131 |
359 |
449 |
643 |
256 |
0 |
| CDI |
0 |
133 |
81 |
333 |
675 |
1737 |
1368 |
36 |
| VCDI |
0 |
120 |
54 |
199 |
600 |
5228 |
32270 |
45782 |
|
Date: 2025-01-04:
| 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 |
67487 |
12416 |
151 |
135 |
12 |
0 |
0 |
0 |
| OW |
930 |
1554 |
211 |
389 |
325 |
51 |
0 |
0 |
| VODI |
1958 |
696 |
263 |
510 |
381 |
144 |
26 |
0 |
| ODI |
1702 |
225 |
97 |
400 |
547 |
387 |
123 |
0 |
| CDI |
0 |
255 |
84 |
328 |
725 |
1733 |
1192 |
0 |
| VCDI |
0 |
313 |
80 |
279 |
771 |
5025 |
28647 |
50258 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67601 |
13073 |
214 |
284 |
92 |
6 |
0 |
0 |
| OW |
828 |
1168 |
237 |
379 |
380 |
89 |
2 |
0 |
| VODI |
1985 |
635 |
237 |
565 |
415 |
186 |
55 |
0 |
| ODI |
1663 |
207 |
82 |
357 |
569 |
537 |
169 |
0 |
| CDI |
0 |
170 |
60 |
253 |
728 |
1668 |
1267 |
0 |
| VCDI |
0 |
206 |
56 |
203 |
577 |
4854 |
28495 |
50258 |
|
Date: 2025-01-06:
| 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 |
65834 |
14418 |
186 |
165 |
31 |
0 |
0 |
0 |
| OW |
828 |
1359 |
291 |
491 |
208 |
40 |
0 |
0 |
| VODI |
1945 |
353 |
239 |
858 |
508 |
151 |
1 |
0 |
| ODI |
1718 |
56 |
55 |
269 |
549 |
440 |
54 |
0 |
| CDI |
0 |
61 |
44 |
185 |
523 |
1511 |
861 |
15 |
| VCDI |
0 |
14 |
12 |
108 |
443 |
3665 |
26632 |
55689 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
65843 |
14343 |
305 |
494 |
186 |
106 |
2 |
0 |
| OW |
828 |
1131 |
179 |
375 |
292 |
172 |
31 |
0 |
| VODI |
1965 |
494 |
187 |
508 |
381 |
251 |
111 |
0 |
| ODI |
1689 |
193 |
85 |
326 |
365 |
486 |
274 |
0 |
| CDI |
0 |
75 |
51 |
255 |
524 |
1350 |
1524 |
23 |
| VCDI |
0 |
25 |
20 |
118 |
514 |
3442 |
25606 |
55681 |
|
Date: 2025-01-08:
| 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 |
63684 |
15321 |
339 |
447 |
139 |
3 |
0 |
0 |
| OW |
809 |
872 |
217 |
432 |
572 |
43 |
0 |
0 |
| VODI |
1911 |
220 |
126 |
454 |
760 |
322 |
18 |
0 |
| ODI |
1754 |
79 |
36 |
213 |
522 |
548 |
120 |
0 |
| CDI |
0 |
59 |
33 |
167 |
367 |
1498 |
2130 |
16 |
| VCDI |
0 |
6 |
8 |
29 |
148 |
3364 |
27520 |
55504 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
63690 |
15133 |
372 |
610 |
661 |
124 |
20 |
0 |
| OW |
806 |
900 |
147 |
367 |
387 |
296 |
53 |
0 |
| VODI |
1936 |
311 |
130 |
356 |
511 |
455 |
146 |
0 |
| ODI |
1726 |
125 |
49 |
188 |
386 |
530 |
327 |
0 |
| CDI |
0 |
85 |
54 |
178 |
377 |
1060 |
2343 |
18 |
| VCDI |
0 |
3 |
7 |
43 |
186 |
3313 |
26899 |
55502 |
|
Date: 2025-01-10:
| 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 |
63966 |
14055 |
245 |
270 |
79 |
4 |
0 |
0 |
| OW |
829 |
1093 |
206 |
409 |
324 |
157 |
5 |
0 |
| VODI |
1892 |
406 |
162 |
452 |
533 |
563 |
86 |
0 |
| ODI |
1790 |
104 |
67 |
266 |
510 |
595 |
228 |
0 |
| CDI |
0 |
87 |
60 |
197 |
640 |
2005 |
1478 |
2 |
| VCDI |
0 |
16 |
12 |
73 |
310 |
2823 |
28575 |
55236 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
64005 |
13972 |
325 |
510 |
342 |
496 |
102 |
0 |
| OW |
807 |
1000 |
147 |
330 |
296 |
253 |
141 |
0 |
| VODI |
1913 |
482 |
111 |
307 |
444 |
452 |
260 |
0 |
| ODI |
1752 |
190 |
72 |
204 |
344 |
632 |
377 |
0 |
| CDI |
0 |
98 |
76 |
218 |
580 |
1567 |
1572 |
4 |
| VCDI |
0 |
19 |
21 |
98 |
390 |
2747 |
27920 |
55234 |
|
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