Validation of sea ice concentration - Full domain
Reference date: 2025-07-31
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-07-25:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
103961 |
21973 |
1396 |
1912 |
175 |
0 |
0 |
0 |
| OW |
0 |
1055 |
533 |
2071 |
910 |
10 |
0 |
0 |
| VODI |
0 |
71 |
97 |
2122 |
6157 |
866 |
6 |
0 |
| ODI |
0 |
0 |
3 |
113 |
8533 |
5911 |
96 |
0 |
| CDI |
0 |
0 |
0 |
0 |
3648 |
24610 |
246 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
412 |
125 |
0 |
|
|
Date: 2025-07-27:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
105211 |
22362 |
1402 |
1931 |
129 |
0 |
0 |
0 |
| OW |
0 |
907 |
445 |
1920 |
832 |
9 |
0 |
0 |
| VODI |
0 |
89 |
85 |
2397 |
6548 |
806 |
14 |
0 |
| ODI |
0 |
0 |
0 |
421 |
9039 |
7271 |
141 |
0 |
| CDI |
0 |
0 |
0 |
0 |
2504 |
20971 |
1138 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
188 |
251 |
0 |
|
|
Date: 2025-07-29:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
106760 |
22006 |
1409 |
1605 |
133 |
1 |
0 |
0 |
| OW |
2 |
802 |
504 |
1950 |
504 |
16 |
0 |
0 |
| VODI |
0 |
50 |
104 |
3053 |
5291 |
388 |
2 |
0 |
| ODI |
0 |
0 |
0 |
319 |
11362 |
9754 |
249 |
0 |
| CDI |
0 |
0 |
0 |
0 |
1158 |
17015 |
1324 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
886 |
363 |
0 |
|
|
Date: 2025-07-31:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
108109 |
21326 |
1258 |
1534 |
164 |
0 |
0 |
0 |
| OW |
0 |
788 |
544 |
1902 |
390 |
8 |
0 |
0 |
| VODI |
0 |
92 |
217 |
2739 |
5889 |
380 |
1 |
0 |
| ODI |
0 |
0 |
1 |
127 |
11755 |
11498 |
186 |
0 |
| CDI |
0 |
0 |
0 |
0 |
609 |
14537 |
1684 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
8 |
1209 |
57 |
0 |
|
|
Date: 2025-08-02:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
109475 |
20757 |
1240 |
1393 |
135 |
1 |
0 |
0 |
| OW |
0 |
984 |
818 |
2197 |
303 |
9 |
0 |
0 |
| VODI |
0 |
72 |
168 |
3856 |
4832 |
748 |
2 |
0 |
| ODI |
0 |
0 |
1 |
105 |
7994 |
12694 |
221 |
0 |
| CDI |
0 |
0 |
0 |
1 |
403 |
10326 |
7014 |
117 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
314 |
822 |
8 |
|
|
Date: 2025-08-04:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
110810 |
20339 |
1095 |
1221 |
109 |
0 |
0 |
0 |
| OW |
0 |
1204 |
729 |
2278 |
277 |
9 |
0 |
0 |
| VODI |
0 |
116 |
171 |
4070 |
3913 |
223 |
2 |
0 |
| ODI |
0 |
0 |
0 |
268 |
9152 |
8488 |
148 |
0 |
| CDI |
0 |
0 |
0 |
2 |
946 |
13640 |
5379 |
176 |
| VCDI |
0 |
0 |
0 |
0 |
7 |
380 |
1530 |
330 |
|
|
Date: 2025-08-06:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
112138 |
19716 |
1061 |
1245 |
117 |
0 |
0 |
0 |
| OW |
0 |
1232 |
715 |
1967 |
316 |
12 |
0 |
0 |
| VODI |
0 |
101 |
141 |
3561 |
3300 |
277 |
12 |
0 |
| ODI |
0 |
0 |
7 |
416 |
8366 |
5433 |
929 |
0 |
| CDI |
0 |
0 |
0 |
9 |
2150 |
14053 |
4050 |
108 |
| VCDI |
0 |
0 |
0 |
0 |
148 |
1258 |
3879 |
295 |
|
|
Date: 2025-08-08:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
112754 |
19919 |
957 |
1138 |
91 |
0 |
0 |
0 |
| OW |
0 |
1469 |
713 |
1476 |
305 |
7 |
0 |
0 |
| VODI |
0 |
226 |
362 |
3697 |
3375 |
379 |
5 |
0 |
| ODI |
0 |
1 |
9 |
529 |
9195 |
7697 |
587 |
0 |
| CDI |
0 |
0 |
0 |
1 |
1383 |
11247 |
5451 |
88 |
| VCDI |
0 |
0 |
0 |
0 |
7 |
214 |
2218 |
1512 |
|
|
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