Validation of sea ice concentration - Full domain
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 |
120563 |
15767 |
658 |
690 |
61 |
5 |
0 |
0 |
| OW |
3 |
4966 |
1103 |
1565 |
156 |
18 |
0 |
0 |
| VODI |
0 |
92 |
260 |
3267 |
1941 |
99 |
0 |
0 |
| ODI |
0 |
1 |
3 |
697 |
12117 |
7403 |
285 |
0 |
| CDI |
0 |
0 |
0 |
0 |
1065 |
8258 |
3283 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
14 |
1019 |
1644 |
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 |
121267 |
15455 |
664 |
603 |
54 |
0 |
0 |
0 |
| OW |
0 |
5526 |
1052 |
1500 |
159 |
0 |
0 |
0 |
| VODI |
0 |
57 |
213 |
3147 |
1812 |
66 |
0 |
0 |
| ODI |
0 |
0 |
0 |
755 |
12978 |
7086 |
122 |
0 |
| CDI |
0 |
0 |
0 |
0 |
906 |
8578 |
3257 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
9 |
540 |
1197 |
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 |
122264 |
14877 |
675 |
597 |
37 |
0 |
0 |
0 |
| OW |
0 |
5700 |
1081 |
1488 |
140 |
4 |
0 |
0 |
| VODI |
0 |
56 |
160 |
2960 |
1559 |
67 |
2 |
0 |
| ODI |
0 |
0 |
0 |
707 |
12420 |
6462 |
187 |
0 |
| CDI |
0 |
0 |
0 |
4 |
906 |
9956 |
2671 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
9 |
760 |
1254 |
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 |
122697 |
14751 |
606 |
656 |
61 |
0 |
0 |
0 |
| OW |
79 |
5859 |
866 |
1580 |
166 |
4 |
0 |
0 |
| VODI |
0 |
54 |
152 |
2704 |
1478 |
67 |
3 |
0 |
| ODI |
0 |
0 |
2 |
969 |
11502 |
6831 |
84 |
0 |
| CDI |
0 |
0 |
0 |
7 |
838 |
11404 |
1472 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
9 |
1428 |
674 |
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 |
123136 |
14872 |
620 |
578 |
51 |
0 |
0 |
0 |
| OW |
89 |
5560 |
782 |
1610 |
249 |
0 |
0 |
0 |
| VODI |
0 |
69 |
183 |
2447 |
1626 |
27 |
14 |
0 |
| ODI |
0 |
0 |
1 |
872 |
12787 |
6392 |
84 |
0 |
| CDI |
0 |
0 |
0 |
4 |
1016 |
11003 |
1416 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
966 |
549 |
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 |
123803 |
14517 |
630 |
542 |
53 |
1 |
0 |
0 |
| OW |
177 |
5689 |
805 |
1447 |
187 |
4 |
0 |
0 |
| VODI |
0 |
50 |
192 |
2776 |
1262 |
53 |
19 |
0 |
| ODI |
0 |
0 |
4 |
1298 |
13392 |
5187 |
42 |
0 |
| CDI |
0 |
0 |
0 |
2 |
1237 |
9955 |
1826 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
6 |
1137 |
710 |
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 |
125022 |
13629 |
662 |
658 |
74 |
0 |
0 |
0 |
| OW |
135 |
5781 |
807 |
1407 |
242 |
1 |
0 |
0 |
| VODI |
0 |
56 |
180 |
2746 |
1140 |
37 |
8 |
0 |
| ODI |
0 |
0 |
0 |
1672 |
12027 |
4683 |
22 |
0 |
| CDI |
0 |
0 |
0 |
0 |
1286 |
10733 |
2181 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
3 |
1097 |
714 |
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 |
123809 |
15078 |
662 |
597 |
35 |
0 |
0 |
0 |
| OW |
151 |
5824 |
790 |
1371 |
275 |
1 |
0 |
0 |
| VODI |
0 |
86 |
274 |
2858 |
1276 |
40 |
1 |
0 |
| ODI |
0 |
0 |
1 |
1308 |
10923 |
4671 |
11 |
0 |
| CDI |
0 |
0 |
0 |
5 |
1195 |
11894 |
2317 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
598 |
948 |
0 |
|
|
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