Validation of sea ice concentration - Full domain
Reference date: 2026-04-16
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2026-04-10:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
68652 |
15350 |
138 |
101 |
23 |
1 |
0 |
0 |
| OW |
0 |
768 |
151 |
243 |
77 |
10 |
3 |
0 |
| VODI |
0 |
886 |
253 |
583 |
277 |
53 |
36 |
0 |
| ODI |
0 |
219 |
175 |
710 |
1318 |
509 |
116 |
0 |
| CDI |
0 |
27 |
31 |
263 |
1541 |
3393 |
1245 |
0 |
| VCDI |
0 |
3 |
5 |
70 |
484 |
3566 |
34490 |
51271 |
|
|
Date: 2026-04-12:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
68932 |
15647 |
181 |
131 |
38 |
2 |
0 |
0 |
| OW |
0 |
634 |
145 |
186 |
66 |
13 |
2 |
0 |
| VODI |
0 |
694 |
241 |
725 |
375 |
84 |
47 |
0 |
| ODI |
0 |
174 |
141 |
613 |
1414 |
1021 |
244 |
0 |
| CDI |
0 |
20 |
12 |
149 |
864 |
3231 |
1786 |
0 |
| VCDI |
0 |
0 |
1 |
33 |
171 |
2614 |
42073 |
44337 |
|
|
Date: 2026-04-14:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
69186 |
15561 |
197 |
200 |
59 |
3 |
0 |
0 |
| OW |
0 |
666 |
120 |
202 |
88 |
20 |
2 |
0 |
| VODI |
0 |
712 |
237 |
781 |
565 |
114 |
76 |
0 |
| ODI |
0 |
174 |
106 |
486 |
1442 |
978 |
268 |
0 |
| CDI |
0 |
12 |
14 |
101 |
871 |
3358 |
1383 |
0 |
| VCDI |
0 |
0 |
0 |
46 |
337 |
2379 |
34274 |
52023 |
|
|
Date: 2026-04-16:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
69734 |
14996 |
199 |
240 |
54 |
2 |
0 |
0 |
| OW |
0 |
681 |
137 |
341 |
84 |
22 |
0 |
0 |
| VODI |
0 |
797 |
239 |
620 |
485 |
103 |
77 |
0 |
| ODI |
0 |
194 |
145 |
642 |
1504 |
785 |
186 |
0 |
| CDI |
0 |
6 |
6 |
125 |
1125 |
3246 |
1048 |
5 |
| VCDI |
0 |
0 |
0 |
16 |
329 |
3418 |
31966 |
53484 |
|
|
Date: 2026-04-18:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
69665 |
15099 |
219 |
309 |
32 |
1 |
0 |
0 |
| OW |
0 |
663 |
147 |
295 |
67 |
15 |
4 |
0 |
| VODI |
0 |
743 |
225 |
681 |
430 |
98 |
51 |
0 |
| ODI |
0 |
217 |
125 |
700 |
1490 |
726 |
231 |
0 |
| CDI |
0 |
20 |
20 |
165 |
1282 |
4194 |
849 |
0 |
| VCDI |
0 |
0 |
7 |
44 |
594 |
4615 |
32341 |
50677 |
|
|
Date: 2026-04-20:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
70522 |
14619 |
212 |
267 |
20 |
1 |
0 |
0 |
| OW |
0 |
748 |
149 |
271 |
83 |
8 |
1 |
0 |
| VODI |
0 |
836 |
286 |
758 |
433 |
99 |
29 |
0 |
| ODI |
0 |
234 |
190 |
992 |
1992 |
817 |
192 |
0 |
| CDI |
0 |
27 |
27 |
144 |
1546 |
3992 |
882 |
3 |
| VCDI |
0 |
0 |
1 |
8 |
213 |
4682 |
35399 |
46358 |
|
|
Date: 2026-04-22:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
70256 |
14867 |
309 |
363 |
18 |
0 |
0 |
0 |
| OW |
0 |
661 |
147 |
376 |
83 |
7 |
0 |
0 |
| VODI |
0 |
708 |
258 |
1047 |
853 |
198 |
53 |
0 |
| ODI |
0 |
255 |
129 |
762 |
1903 |
1029 |
167 |
0 |
| CDI |
0 |
47 |
32 |
139 |
1156 |
4660 |
1264 |
11 |
| VCDI |
0 |
1 |
0 |
22 |
207 |
4572 |
34989 |
45492 |
|
|
Date: 2026-04-24:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
70055 |
15347 |
353 |
419 |
43 |
0 |
0 |
0 |
| OW |
0 |
545 |
172 |
431 |
128 |
16 |
0 |
0 |
| VODI |
0 |
795 |
266 |
967 |
886 |
246 |
68 |
0 |
| ODI |
0 |
289 |
162 |
701 |
1604 |
746 |
59 |
0 |
| CDI |
0 |
58 |
46 |
204 |
1765 |
4562 |
926 |
6 |
| VCDI |
0 |
5 |
1 |
14 |
222 |
4447 |
37818 |
42669 |
|
|
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