Validation of sea ice concentration - American sector
Bulletin date: 2025-09-11
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-09-05:
| 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 |
15467 |
6591 |
40 |
23 |
0 |
0 |
0 |
0 |
| OW |
26 |
2652 |
529 |
405 |
4 |
0 |
0 |
0 |
| VODI |
0 |
225 |
365 |
2076 |
589 |
32 |
0 |
0 |
| ODI |
0 |
16 |
12 |
530 |
4081 |
922 |
0 |
0 |
| CDI |
0 |
7 |
3 |
11 |
722 |
6610 |
641 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
10 |
2009 |
1268 |
0 |
|
...date precedes bulletin
|
Date: 2025-09-07:
| 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 |
15803 |
6113 |
49 |
17 |
0 |
0 |
0 |
0 |
| OW |
35 |
2853 |
494 |
340 |
4 |
0 |
0 |
0 |
| VODI |
0 |
338 |
407 |
2023 |
532 |
35 |
1 |
0 |
| ODI |
0 |
19 |
23 |
660 |
3751 |
946 |
0 |
0 |
| CDI |
0 |
7 |
7 |
51 |
681 |
6216 |
1085 |
0 |
| VCDI |
0 |
0 |
0 |
10 |
20 |
2522 |
824 |
0 |
|
...date precedes bulletin
|
Date: 2025-09-09:
| 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 |
15357 |
7583 |
97 |
38 |
0 |
0 |
0 |
0 |
| OW |
53 |
1989 |
741 |
580 |
1 |
0 |
0 |
0 |
| VODI |
0 |
31 |
127 |
2333 |
474 |
4 |
0 |
0 |
| ODI |
0 |
6 |
4 |
487 |
2571 |
182 |
0 |
0 |
| CDI |
0 |
0 |
3 |
27 |
1756 |
7309 |
830 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
6 |
1426 |
1850 |
0 |
|
...date precedes bulletin
|
Date: 2025-09-11:
| 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 |
15356 |
6556 |
77 |
19 |
0 |
0 |
0 |
0 |
| OW |
152 |
2743 |
572 |
482 |
70 |
1 |
0 |
0 |
| VODI |
7 |
147 |
237 |
2086 |
583 |
68 |
1 |
0 |
| ODI |
0 |
7 |
8 |
710 |
2392 |
303 |
16 |
0 |
| CDI |
0 |
2 |
4 |
46 |
1934 |
4088 |
431 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
4095 |
2671 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15361 |
6594 |
92 |
19 |
0 |
0 |
0 |
0 |
| OW |
149 |
2685 |
567 |
494 |
62 |
0 |
0 |
0 |
| VODI |
5 |
165 |
227 |
2159 |
709 |
66 |
1 |
0 |
| ODI |
0 |
10 |
8 |
626 |
2412 |
331 |
14 |
0 |
| CDI |
0 |
1 |
4 |
44 |
1793 |
4241 |
537 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
5 |
3917 |
2567 |
0 |
|
Date: 2025-09-13:
| 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 |
16371 |
5349 |
41 |
15 |
0 |
0 |
0 |
0 |
| OW |
401 |
2800 |
437 |
288 |
37 |
2 |
0 |
0 |
| VODI |
0 |
250 |
277 |
2011 |
685 |
42 |
2 |
0 |
| ODI |
0 |
6 |
7 |
631 |
2508 |
459 |
1 |
0 |
| CDI |
0 |
0 |
0 |
26 |
1473 |
3816 |
296 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
3621 |
4012 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16342 |
5204 |
41 |
15 |
0 |
0 |
0 |
0 |
| OW |
430 |
2952 |
451 |
302 |
22 |
1 |
0 |
0 |
| VODI |
0 |
240 |
263 |
2125 |
834 |
54 |
0 |
0 |
| ODI |
0 |
9 |
6 |
494 |
2558 |
490 |
2 |
0 |
| CDI |
0 |
0 |
1 |
35 |
1290 |
3840 |
355 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
3555 |
3954 |
0 |
|
Date: 2025-09-15:
| 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 |
17533 |
6063 |
57 |
22 |
3 |
0 |
0 |
0 |
| OW |
37 |
1860 |
615 |
363 |
16 |
3 |
0 |
0 |
| VODI |
0 |
16 |
49 |
1933 |
426 |
5 |
0 |
0 |
| ODI |
0 |
1 |
0 |
217 |
2525 |
218 |
0 |
0 |
| CDI |
0 |
0 |
0 |
1 |
763 |
4171 |
210 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
5 |
2445 |
6309 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17095 |
4587 |
62 |
34 |
3 |
0 |
0 |
0 |
| OW |
475 |
2888 |
327 |
309 |
43 |
8 |
0 |
0 |
| VODI |
0 |
452 |
308 |
1589 |
767 |
267 |
2 |
0 |
| ODI |
0 |
11 |
24 |
586 |
1971 |
558 |
18 |
0 |
| CDI |
0 |
2 |
0 |
18 |
935 |
3029 |
469 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
19 |
2980 |
6030 |
0 |
|
Date: 2025-09-17:
| 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 |
17408 |
6287 |
118 |
55 |
2 |
0 |
0 |
0 |
| OW |
42 |
1580 |
496 |
592 |
77 |
30 |
0 |
0 |
| VODI |
0 |
67 |
152 |
1415 |
776 |
4 |
0 |
0 |
| ODI |
0 |
0 |
3 |
307 |
1979 |
393 |
5 |
0 |
| CDI |
0 |
0 |
0 |
50 |
1127 |
3601 |
139 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
60 |
1850 |
7248 |
1 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16970 |
4770 |
96 |
41 |
3 |
0 |
0 |
0 |
| OW |
480 |
2787 |
329 |
448 |
58 |
11 |
0 |
0 |
| VODI |
0 |
368 |
330 |
1411 |
929 |
93 |
2 |
0 |
| ODI |
0 |
9 |
14 |
482 |
2134 |
707 |
9 |
0 |
| CDI |
0 |
0 |
0 |
39 |
877 |
2571 |
356 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
20 |
2496 |
7025 |
1 |
|
Date: 2025-09-19:
| 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 |
17442 |
6211 |
78 |
42 |
2 |
0 |
0 |
0 |
| OW |
27 |
1765 |
478 |
482 |
17 |
2 |
0 |
0 |
| VODI |
0 |
157 |
178 |
1006 |
832 |
89 |
0 |
0 |
| ODI |
0 |
24 |
13 |
136 |
677 |
1763 |
109 |
0 |
| CDI |
0 |
17 |
23 |
80 |
529 |
3133 |
787 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
48 |
2090 |
6170 |
1459 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16837 |
4642 |
74 |
40 |
3 |
0 |
0 |
0 |
| OW |
632 |
2839 |
332 |
363 |
20 |
1 |
0 |
0 |
| VODI |
0 |
618 |
309 |
1024 |
705 |
222 |
4 |
0 |
| ODI |
0 |
50 |
30 |
234 |
970 |
2100 |
360 |
0 |
| CDI |
0 |
23 |
25 |
83 |
354 |
2830 |
571 |
0 |
| VCDI |
0 |
2 |
0 |
2 |
53 |
1924 |
6131 |
1459 |
|
Generated by /metno/routine/sms/V3/SIconcentrationValidation5/SICamsr2webPage5sector.sh Fri Sep 26 02:10:52 UTC 2025 on arcval2