Validation of sea ice concentration - American sector
Reference date: 2025-08-28
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-08-22:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13280 |
4872 |
198 |
182 |
23 |
0 |
0 |
0 |
| OW |
3 |
4309 |
919 |
944 |
26 |
0 |
0 |
0 |
| VODI |
0 |
63 |
175 |
2277 |
678 |
6 |
0 |
0 |
| ODI |
0 |
1 |
3 |
422 |
5181 |
2635 |
94 |
0 |
| CDI |
0 |
0 |
0 |
0 |
201 |
4858 |
2083 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
849 |
1557 |
0 |
|
|
Date: 2025-08-24:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13223 |
5067 |
206 |
185 |
16 |
0 |
0 |
0 |
| OW |
0 |
4893 |
830 |
898 |
33 |
0 |
0 |
0 |
| VODI |
0 |
35 |
136 |
2067 |
700 |
3 |
0 |
0 |
| ODI |
0 |
0 |
0 |
346 |
5135 |
2854 |
48 |
0 |
| CDI |
0 |
0 |
0 |
0 |
271 |
5393 |
2086 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
463 |
948 |
0 |
|
|
Date: 2025-08-26:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14117 |
4411 |
222 |
162 |
14 |
0 |
0 |
0 |
| OW |
0 |
5155 |
866 |
900 |
31 |
0 |
0 |
0 |
| VODI |
0 |
40 |
83 |
1813 |
617 |
4 |
0 |
0 |
| ODI |
0 |
0 |
0 |
315 |
5028 |
2025 |
119 |
0 |
| CDI |
0 |
0 |
0 |
0 |
468 |
5943 |
2160 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
3 |
547 |
797 |
0 |
|
|
Date: 2025-08-28:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14506 |
4039 |
182 |
266 |
44 |
0 |
0 |
0 |
| OW |
79 |
5309 |
636 |
1037 |
51 |
1 |
0 |
0 |
| VODI |
0 |
12 |
37 |
1548 |
696 |
27 |
0 |
0 |
| ODI |
0 |
0 |
0 |
398 |
3628 |
2721 |
31 |
0 |
| CDI |
0 |
0 |
0 |
0 |
228 |
7775 |
1135 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
1067 |
387 |
0 |
|
|
Date: 2025-08-30:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14646 |
4198 |
213 |
206 |
34 |
0 |
0 |
0 |
| OW |
89 |
5000 |
558 |
1079 |
143 |
0 |
0 |
0 |
| VODI |
0 |
18 |
30 |
1148 |
846 |
11 |
0 |
0 |
| ODI |
0 |
0 |
0 |
286 |
4801 |
1221 |
15 |
0 |
| CDI |
0 |
0 |
0 |
3 |
703 |
8584 |
825 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
880 |
303 |
0 |
|
|
Date: 2025-09-01:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14896 |
4243 |
184 |
125 |
23 |
1 |
0 |
0 |
| OW |
177 |
5151 |
589 |
879 |
48 |
4 |
0 |
0 |
| VODI |
0 |
17 |
54 |
1412 |
490 |
25 |
0 |
0 |
| ODI |
0 |
0 |
0 |
448 |
4746 |
1149 |
10 |
0 |
| CDI |
0 |
0 |
0 |
0 |
864 |
7704 |
1073 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
6 |
1067 |
455 |
0 |
|
|
Date: 2025-09-03:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15286 |
4048 |
169 |
130 |
7 |
0 |
0 |
0 |
| OW |
135 |
5312 |
578 |
848 |
83 |
1 |
0 |
0 |
| VODI |
0 |
22 |
55 |
1388 |
361 |
16 |
0 |
0 |
| ODI |
0 |
0 |
0 |
717 |
4550 |
1023 |
10 |
0 |
| CDI |
0 |
0 |
0 |
0 |
692 |
7811 |
1226 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
1018 |
353 |
0 |
|
|
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 |
5325 |
574 |
812 |
60 |
0 |
0 |
0 |
| VODI |
0 |
58 |
154 |
1418 |
439 |
15 |
0 |
0 |
| ODI |
0 |
0 |
1 |
610 |
4312 |
988 |
3 |
0 |
| CDI |
0 |
0 |
0 |
0 |
584 |
8096 |
1331 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
474 |
575 |
0 |
|
|
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