Validation of sea ice concentration - Full domain
Reference date: 2025-08-21
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-08-15:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
116185 |
18752 |
802 |
627 |
39 |
0 |
0 |
0 |
| OW |
0 |
2968 |
920 |
1502 |
162 |
5 |
0 |
0 |
| VODI |
0 |
143 |
286 |
4297 |
1973 |
142 |
1 |
0 |
| ODI |
0 |
0 |
0 |
612 |
13414 |
10228 |
427 |
10 |
| CDI |
0 |
0 |
0 |
1 |
402 |
6423 |
2926 |
117 |
| VCDI |
0 |
0 |
0 |
0 |
3 |
533 |
2917 |
186 |
|
|
Date: 2025-08-17:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
117410 |
17946 |
752 |
684 |
49 |
0 |
0 |
0 |
| OW |
11 |
3379 |
1091 |
1714 |
180 |
7 |
0 |
0 |
| VODI |
0 |
113 |
258 |
3798 |
2571 |
102 |
0 |
0 |
| ODI |
0 |
0 |
0 |
479 |
14386 |
8764 |
489 |
0 |
| CDI |
0 |
0 |
0 |
4 |
440 |
5182 |
3580 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
255 |
3357 |
0 |
|
|
Date: 2025-08-19:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
118540 |
17217 |
712 |
712 |
55 |
0 |
0 |
0 |
| OW |
11 |
3847 |
1199 |
1853 |
209 |
2 |
0 |
0 |
| VODI |
0 |
84 |
177 |
3249 |
2280 |
100 |
9 |
0 |
| ODI |
0 |
0 |
4 |
531 |
13634 |
6978 |
339 |
0 |
| CDI |
0 |
0 |
0 |
6 |
724 |
7643 |
3090 |
34 |
| VCDI |
0 |
0 |
0 |
0 |
17 |
1326 |
2373 |
48 |
|
|
Date: 2025-08-21:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
120359 |
15908 |
707 |
639 |
37 |
3 |
0 |
0 |
| OW |
9 |
4779 |
1106 |
1484 |
164 |
19 |
0 |
0 |
| VODI |
0 |
117 |
304 |
3145 |
1831 |
130 |
1 |
0 |
| ODI |
0 |
0 |
6 |
672 |
12004 |
6923 |
391 |
0 |
| CDI |
0 |
0 |
0 |
2 |
1460 |
7110 |
4417 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
39 |
825 |
2412 |
0 |
|
|
Date: 2025-08-23:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
120268 |
16230 |
665 |
665 |
48 |
3 |
0 |
0 |
| OW |
0 |
5287 |
1143 |
1441 |
163 |
13 |
0 |
0 |
| VODI |
0 |
89 |
252 |
3214 |
1885 |
90 |
0 |
0 |
| ODI |
0 |
1 |
4 |
734 |
12480 |
7349 |
273 |
0 |
| CDI |
0 |
0 |
0 |
0 |
922 |
7713 |
4156 |
1 |
| VCDI |
0 |
0 |
0 |
0 |
17 |
642 |
1251 |
4 |
|
|
Date: 2025-08-25:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
122186 |
14708 |
613 |
676 |
36 |
0 |
0 |
0 |
| OW |
0 |
5700 |
1028 |
1492 |
156 |
1 |
0 |
0 |
| VODI |
0 |
42 |
207 |
3137 |
1709 |
32 |
0 |
0 |
| ODI |
0 |
0 |
1 |
897 |
12627 |
6611 |
137 |
0 |
| CDI |
0 |
0 |
0 |
3 |
877 |
9738 |
2531 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
595 |
1259 |
0 |
|
|
Date: 2025-08-27:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
122584 |
14698 |
640 |
648 |
57 |
0 |
0 |
0 |
| OW |
0 |
5747 |
965 |
1642 |
154 |
8 |
0 |
0 |
| VODI |
0 |
41 |
142 |
2633 |
1588 |
70 |
1 |
0 |
| ODI |
0 |
0 |
2 |
812 |
12177 |
6339 |
107 |
0 |
| CDI |
0 |
0 |
0 |
8 |
928 |
10740 |
1990 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
6 |
1286 |
990 |
0 |
|
|
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 |
656 |
565 |
55 |
0 |
0 |
0 |
| OW |
83 |
5755 |
867 |
1521 |
191 |
2 |
0 |
0 |
| VODI |
0 |
79 |
207 |
2485 |
1581 |
65 |
13 |
0 |
| ODI |
0 |
0 |
1 |
863 |
12130 |
6465 |
75 |
0 |
| CDI |
0 |
0 |
0 |
2 |
938 |
11713 |
1227 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
3 |
1207 |
497 |
0 |
|
|
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