Validation of sea ice concentration - American sector
Bulletin date: 2025-09-16
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-09-16:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16174 |
4150 |
1 |
12 |
0 |
0 |
0 |
0 |
| OW |
228 |
548 |
3 |
17 |
7 |
0 |
0 |
0 |
| VODI |
536 |
1558 |
29 |
191 |
65 |
29 |
8 |
0 |
| ODI |
440 |
2154 |
84 |
872 |
397 |
361 |
90 |
0 |
| CDI |
17 |
195 |
37 |
1206 |
2427 |
1660 |
680 |
0 |
| VCDI |
0 |
5 |
0 |
59 |
729 |
4276 |
6312 |
0 |
|
Date: 2025-09-18:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15745 |
6174 |
91 |
64 |
9 |
0 |
0 |
0 |
| OW |
140 |
514 |
54 |
72 |
12 |
0 |
0 |
0 |
| VODI |
277 |
1113 |
134 |
358 |
84 |
11 |
0 |
0 |
| ODI |
196 |
1003 |
325 |
911 |
392 |
227 |
44 |
0 |
| CDI |
3 |
59 |
49 |
1036 |
2293 |
1613 |
567 |
32 |
| VCDI |
0 |
1 |
0 |
96 |
921 |
3787 |
6517 |
633 |
|
Date: 2025-09-20:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16551 |
6402 |
32 |
146 |
18 |
0 |
0 |
0 |
| OW |
96 |
443 |
9 |
86 |
12 |
2 |
0 |
0 |
| VODI |
164 |
856 |
44 |
169 |
59 |
60 |
3 |
0 |
| ODI |
138 |
1031 |
57 |
722 |
310 |
198 |
26 |
0 |
| CDI |
0 |
134 |
16 |
493 |
1122 |
1550 |
399 |
76 |
| VCDI |
0 |
25 |
2 |
81 |
761 |
5156 |
6576 |
1532 |
|
Date: 2025-09-22:
| Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16423 |
6801 |
124 |
182 |
65 |
13 |
0 |
0 |
| OW |
40 |
322 |
26 |
85 |
40 |
22 |
0 |
0 |
| VODI |
84 |
553 |
43 |
161 |
116 |
77 |
3 |
0 |
| ODI |
82 |
844 |
103 |
396 |
378 |
201 |
21 |
0 |
| CDI |
1 |
165 |
65 |
409 |
828 |
1067 |
230 |
40 |
| VCDI |
0 |
39 |
17 |
157 |
701 |
5483 |
7118 |
2032 |
|
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