Validation of sea ice concentration - Full domain
Reference date: 2026-04-09
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2026-04-03:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
68732 |
14941 |
203 |
177 |
37 |
7 |
0 |
0 |
| OW |
1 |
622 |
144 |
306 |
79 |
5 |
0 |
0 |
| VODI |
0 |
506 |
204 |
586 |
455 |
58 |
8 |
0 |
| ODI |
0 |
181 |
150 |
552 |
1081 |
743 |
129 |
0 |
| CDI |
0 |
7 |
22 |
163 |
1064 |
2956 |
1758 |
0 |
| VCDI |
0 |
0 |
6 |
44 |
440 |
4072 |
34758 |
51844 |
|
|
Date: 2026-04-05:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
68871 |
14819 |
172 |
191 |
31 |
6 |
0 |
0 |
| OW |
4 |
548 |
157 |
281 |
74 |
11 |
0 |
0 |
| VODI |
0 |
582 |
235 |
503 |
460 |
47 |
6 |
0 |
| ODI |
0 |
148 |
133 |
521 |
1300 |
814 |
122 |
0 |
| CDI |
0 |
5 |
5 |
111 |
900 |
3520 |
1993 |
3 |
| VCDI |
0 |
0 |
4 |
32 |
258 |
3362 |
32372 |
54440 |
|
|
Date: 2026-04-07:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
68371 |
14955 |
173 |
195 |
37 |
4 |
0 |
0 |
| OW |
0 |
696 |
150 |
280 |
93 |
8 |
3 |
0 |
| VODI |
0 |
720 |
261 |
624 |
500 |
56 |
10 |
0 |
| ODI |
0 |
61 |
106 |
482 |
1404 |
1093 |
201 |
0 |
| CDI |
0 |
7 |
17 |
69 |
539 |
3398 |
2181 |
3 |
| VCDI |
0 |
0 |
0 |
37 |
280 |
3009 |
31203 |
55815 |
|
|
Date: 2026-04-09:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
68555 |
15115 |
138 |
143 |
19 |
1 |
0 |
0 |
| OW |
0 |
788 |
162 |
200 |
78 |
13 |
5 |
0 |
| VODI |
0 |
789 |
242 |
702 |
320 |
59 |
32 |
0 |
| ODI |
0 |
175 |
147 |
638 |
1236 |
573 |
112 |
0 |
| CDI |
0 |
27 |
35 |
183 |
1165 |
3502 |
1358 |
0 |
| VCDI |
0 |
1 |
2 |
46 |
542 |
3424 |
30350 |
56164 |
|
|
Date: 2026-04-11:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
68624 |
15652 |
149 |
163 |
37 |
1 |
0 |
0 |
| OW |
0 |
728 |
153 |
182 |
75 |
8 |
0 |
0 |
| VODI |
0 |
823 |
245 |
655 |
323 |
63 |
29 |
0 |
| ODI |
0 |
216 |
166 |
650 |
1508 |
774 |
150 |
0 |
| CDI |
0 |
19 |
17 |
181 |
1172 |
3111 |
1508 |
3 |
| VCDI |
0 |
0 |
1 |
57 |
267 |
3464 |
35921 |
49946 |
|
|
Date: 2026-04-13:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
69174 |
15529 |
212 |
157 |
41 |
1 |
0 |
0 |
| OW |
0 |
646 |
118 |
220 |
60 |
16 |
1 |
0 |
| VODI |
0 |
663 |
238 |
773 |
426 |
107 |
58 |
0 |
| ODI |
0 |
168 |
118 |
527 |
1373 |
1056 |
279 |
0 |
| CDI |
0 |
11 |
10 |
83 |
767 |
3480 |
1735 |
0 |
| VCDI |
0 |
14 |
16 |
67 |
237 |
2388 |
37874 |
48398 |
|
|
Date: 2026-04-15:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
69318 |
15464 |
205 |
211 |
57 |
5 |
0 |
0 |
| OW |
0 |
654 |
137 |
262 |
85 |
24 |
1 |
0 |
| VODI |
0 |
678 |
223 |
749 |
539 |
119 |
73 |
0 |
| ODI |
0 |
198 |
118 |
495 |
1381 |
953 |
254 |
0 |
| CDI |
0 |
15 |
10 |
90 |
907 |
3172 |
1252 |
0 |
| VCDI |
0 |
0 |
0 |
19 |
526 |
2841 |
35381 |
50625 |
|
|
Date: 2026-04-17:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
69586 |
15081 |
220 |
287 |
32 |
0 |
0 |
0 |
| OW |
0 |
690 |
154 |
308 |
69 |
8 |
0 |
0 |
| VODI |
0 |
780 |
271 |
650 |
360 |
115 |
79 |
0 |
| ODI |
0 |
216 |
132 |
766 |
1389 |
776 |
182 |
0 |
| CDI |
0 |
9 |
18 |
164 |
1095 |
3711 |
755 |
3 |
| VCDI |
0 |
3 |
6 |
45 |
401 |
4066 |
32287 |
52327 |
|
|
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