Validation of sea ice concentration - Full domain
Reference date: 2025-09-04
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-08-29:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
122928 |
14829 |
657 |
565 |
56 |
0 |
0 |
0 |
| OW |
83 |
5755 |
869 |
1529 |
193 |
2 |
0 |
0 |
| VODI |
0 |
79 |
204 |
2478 |
1585 |
65 |
13 |
0 |
| ODI |
0 |
0 |
1 |
862 |
12124 |
6472 |
75 |
0 |
| CDI |
0 |
0 |
0 |
2 |
937 |
11708 |
1227 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
3 |
1205 |
497 |
0 |
|
|
Date: 2025-08-31:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
123719 |
14402 |
618 |
513 |
42 |
0 |
0 |
0 |
| OW |
184 |
5654 |
795 |
1496 |
166 |
3 |
0 |
0 |
| VODI |
0 |
68 |
183 |
2749 |
1295 |
86 |
5 |
0 |
| ODI |
0 |
0 |
3 |
1225 |
13581 |
5512 |
49 |
0 |
| CDI |
0 |
0 |
0 |
6 |
1074 |
10333 |
1664 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
887 |
687 |
0 |
|
|
Date: 2025-09-02:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
123931 |
14568 |
629 |
636 |
53 |
0 |
0 |
0 |
| OW |
139 |
5809 |
854 |
1353 |
213 |
5 |
0 |
0 |
| VODI |
0 |
50 |
164 |
2692 |
1277 |
53 |
15 |
0 |
| ODI |
0 |
0 |
1 |
1337 |
12749 |
5028 |
41 |
0 |
| CDI |
0 |
0 |
0 |
0 |
1361 |
10118 |
1927 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
7 |
1188 |
805 |
0 |
|
|
Date: 2025-09-04:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
124034 |
14741 |
678 |
661 |
58 |
0 |
0 |
0 |
| OW |
169 |
5723 |
761 |
1400 |
252 |
1 |
0 |
0 |
| VODI |
0 |
73 |
190 |
2797 |
1255 |
25 |
0 |
0 |
| ODI |
0 |
0 |
0 |
1483 |
11472 |
4724 |
40 |
0 |
| CDI |
0 |
0 |
0 |
5 |
1360 |
10515 |
2905 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
5 |
632 |
1044 |
0 |
|
|
Date: 2025-09-06:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
123985 |
14914 |
656 |
633 |
36 |
0 |
0 |
0 |
| OW |
194 |
5723 |
758 |
1364 |
321 |
10 |
0 |
0 |
| VODI |
0 |
78 |
263 |
2868 |
1293 |
73 |
0 |
0 |
| ODI |
0 |
0 |
1 |
1429 |
10172 |
4059 |
19 |
0 |
| CDI |
0 |
0 |
0 |
4 |
1314 |
13304 |
2112 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
4 |
662 |
753 |
0 |
|
|
Date: 2025-09-08:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
124002 |
15053 |
630 |
599 |
28 |
0 |
0 |
0 |
| OW |
212 |
5672 |
801 |
1317 |
247 |
18 |
0 |
0 |
| VODI |
0 |
74 |
199 |
2776 |
1197 |
66 |
6 |
0 |
| ODI |
0 |
0 |
1 |
1496 |
7514 |
2706 |
36 |
0 |
| CDI |
0 |
0 |
0 |
2 |
2761 |
16333 |
1772 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
547 |
937 |
0 |
|
|
Date: 2025-09-10:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
123985 |
14996 |
670 |
636 |
60 |
4 |
0 |
0 |
| OW |
0 |
5523 |
812 |
1608 |
257 |
14 |
0 |
0 |
| VODI |
0 |
86 |
171 |
2625 |
1154 |
87 |
2 |
0 |
| ODI |
0 |
0 |
4 |
1487 |
5074 |
1529 |
14 |
0 |
| CDI |
0 |
0 |
0 |
22 |
3833 |
15749 |
2203 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
3 |
2329 |
2066 |
0 |
|
|
Date: 2025-09-12:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
124243 |
14822 |
630 |
568 |
20 |
0 |
0 |
0 |
| OW |
102 |
5344 |
657 |
1482 |
301 |
13 |
0 |
0 |
| VODI |
0 |
133 |
147 |
2450 |
1318 |
116 |
4 |
0 |
| ODI |
0 |
0 |
8 |
1168 |
4140 |
1313 |
11 |
0 |
| CDI |
0 |
0 |
0 |
11 |
2644 |
13507 |
1810 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
5054 |
4983 |
0 |
|
|
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