Validation of sea ice concentration - American sector
Reference date: 2025-09-11
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-09-05:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14955 |
4573 |
159 |
162 |
10 |
0 |
0 |
0 |
| OW |
151 |
5324 |
574 |
811 |
59 |
0 |
0 |
0 |
| VODI |
0 |
58 |
154 |
1419 |
441 |
15 |
0 |
0 |
| ODI |
0 |
0 |
1 |
610 |
4307 |
983 |
3 |
0 |
| CDI |
0 |
0 |
0 |
0 |
588 |
8100 |
1333 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
475 |
573 |
0 |
|
|
Date: 2025-09-07:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15047 |
4637 |
179 |
194 |
13 |
1 |
0 |
0 |
| OW |
221 |
5247 |
617 |
685 |
58 |
2 |
0 |
0 |
| VODI |
0 |
78 |
136 |
1410 |
343 |
8 |
0 |
0 |
| ODI |
0 |
1 |
4 |
759 |
4044 |
929 |
10 |
0 |
| CDI |
0 |
0 |
0 |
7 |
530 |
8397 |
1529 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
382 |
371 |
0 |
|
|
Date: 2025-09-09:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14916 |
4871 |
222 |
227 |
21 |
0 |
0 |
0 |
| OW |
182 |
5131 |
633 |
833 |
42 |
0 |
0 |
0 |
| VODI |
0 |
44 |
47 |
1341 |
306 |
2 |
0 |
0 |
| ODI |
0 |
0 |
2 |
967 |
2411 |
333 |
8 |
0 |
| CDI |
0 |
0 |
0 |
14 |
2027 |
7762 |
1825 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
824 |
847 |
0 |
|
|
Date: 2025-09-11:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15049 |
4946 |
206 |
159 |
30 |
1 |
0 |
0 |
| OW |
0 |
5081 |
526 |
860 |
126 |
11 |
0 |
0 |
| VODI |
0 |
67 |
63 |
1207 |
416 |
48 |
4 |
0 |
| ODI |
0 |
0 |
3 |
1004 |
2580 |
398 |
28 |
0 |
| CDI |
0 |
0 |
0 |
14 |
1828 |
5662 |
1105 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
2435 |
1982 |
0 |
|
|
Date: 2025-09-13:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15136 |
5106 |
207 |
151 |
14 |
0 |
0 |
0 |
| OW |
162 |
4799 |
431 |
789 |
98 |
22 |
0 |
0 |
| VODI |
0 |
79 |
59 |
1233 |
551 |
34 |
0 |
0 |
| ODI |
0 |
0 |
0 |
727 |
2760 |
493 |
18 |
0 |
| CDI |
0 |
0 |
0 |
4 |
1281 |
5065 |
553 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
2326 |
3740 |
0 |
|
|
Date: 2025-09-15:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15554 |
4988 |
179 |
179 |
45 |
3 |
0 |
0 |
| OW |
803 |
4181 |
419 |
681 |
124 |
9 |
0 |
0 |
| VODI |
8 |
63 |
63 |
1192 |
376 |
104 |
5 |
0 |
| ODI |
0 |
0 |
0 |
431 |
2375 |
796 |
19 |
0 |
| CDI |
0 |
0 |
0 |
1 |
815 |
3770 |
618 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
2160 |
5877 |
0 |
|
|
Date: 2025-09-17:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15862 |
4825 |
192 |
216 |
82 |
26 |
0 |
0 |
| OW |
611 |
4026 |
496 |
933 |
125 |
16 |
0 |
0 |
| VODI |
8 |
42 |
69 |
920 |
564 |
80 |
1 |
0 |
| ODI |
0 |
0 |
0 |
330 |
2485 |
632 |
11 |
0 |
| CDI |
0 |
0 |
0 |
16 |
765 |
3344 |
289 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
0 |
1780 |
7091 |
1 |
|
|
Date: 2025-09-19:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16199 |
4837 |
234 |
187 |
10 |
0 |
0 |
0 |
| OW |
593 |
3914 |
458 |
731 |
73 |
3 |
0 |
0 |
| VODI |
4 |
57 |
64 |
713 |
652 |
65 |
0 |
0 |
| ODI |
0 |
13 |
11 |
109 |
1101 |
1686 |
119 |
0 |
| CDI |
0 |
2 |
1 |
5 |
269 |
3544 |
837 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
1780 |
6109 |
1459 |
|
|
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