Validation of sea ice concentration - American sector
Reference date: 2025-08-14
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
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 |
11239 |
5213 |
328 |
429 |
32 |
0 |
0 |
0 |
| OW |
0 |
852 |
497 |
946 |
132 |
5 |
0 |
0 |
| VODI |
0 |
132 |
240 |
2661 |
1410 |
203 |
5 |
0 |
| ODI |
0 |
0 |
0 |
284 |
3591 |
1981 |
519 |
0 |
| CDI |
0 |
0 |
0 |
0 |
851 |
6472 |
3965 |
89 |
| VCDI |
0 |
0 |
0 |
0 |
7 |
138 |
2111 |
1511 |
|
|
Date: 2025-08-10:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11393 |
5155 |
339 |
399 |
26 |
0 |
0 |
0 |
| OW |
0 |
1118 |
611 |
1240 |
85 |
0 |
0 |
0 |
| VODI |
0 |
36 |
116 |
3194 |
1023 |
38 |
2 |
0 |
| ODI |
0 |
0 |
0 |
168 |
3784 |
3340 |
837 |
2 |
| CDI |
0 |
0 |
0 |
0 |
184 |
5568 |
3278 |
26 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
448 |
3370 |
63 |
|
|
Date: 2025-08-12:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11644 |
5166 |
400 |
300 |
23 |
0 |
0 |
0 |
| OW |
0 |
1621 |
794 |
997 |
83 |
0 |
0 |
0 |
| VODI |
0 |
83 |
129 |
2893 |
828 |
25 |
5 |
0 |
| ODI |
0 |
0 |
0 |
184 |
4247 |
3428 |
348 |
0 |
| CDI |
0 |
0 |
0 |
0 |
122 |
5548 |
2714 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
956 |
3305 |
0 |
|
|
Date: 2025-08-14:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11752 |
5251 |
392 |
353 |
30 |
0 |
0 |
0 |
| OW |
0 |
2142 |
752 |
897 |
45 |
2 |
0 |
0 |
| VODI |
0 |
94 |
249 |
2982 |
817 |
26 |
6 |
0 |
| ODI |
0 |
0 |
0 |
189 |
5131 |
3125 |
125 |
0 |
| CDI |
0 |
0 |
0 |
1 |
721 |
4501 |
2402 |
56 |
| VCDI |
0 |
0 |
0 |
0 |
3 |
590 |
2715 |
494 |
|
|
Date: 2025-08-16:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11945 |
5506 |
363 |
251 |
14 |
0 |
0 |
0 |
| OW |
0 |
2413 |
702 |
1114 |
55 |
1 |
0 |
0 |
| VODI |
0 |
81 |
140 |
2921 |
999 |
25 |
3 |
0 |
| ODI |
0 |
0 |
0 |
182 |
5681 |
3230 |
293 |
4 |
| CDI |
0 |
0 |
0 |
0 |
256 |
3122 |
2921 |
271 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
159 |
2916 |
275 |
|
|
Date: 2025-08-18:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12117 |
5520 |
297 |
291 |
28 |
0 |
0 |
0 |
| OW |
0 |
2849 |
917 |
1381 |
59 |
1 |
0 |
0 |
| VODI |
0 |
55 |
84 |
2363 |
1032 |
30 |
1 |
0 |
| ODI |
0 |
0 |
2 |
218 |
5434 |
3463 |
126 |
0 |
| CDI |
0 |
0 |
0 |
2 |
168 |
3391 |
2567 |
126 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
410 |
2597 |
314 |
|
|
Date: 2025-08-20:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12917 |
5057 |
177 |
210 |
20 |
0 |
0 |
0 |
| OW |
16 |
3810 |
887 |
1082 |
24 |
0 |
0 |
0 |
| VODI |
0 |
75 |
204 |
2134 |
582 |
10 |
0 |
0 |
| ODI |
0 |
1 |
6 |
467 |
5365 |
2447 |
57 |
0 |
| CDI |
0 |
0 |
1 |
2 |
262 |
4792 |
1808 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
5 |
1115 |
2310 |
0 |
|
|
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 |
13281 |
4874 |
199 |
180 |
23 |
0 |
0 |
0 |
| OW |
3 |
4309 |
919 |
949 |
26 |
0 |
0 |
0 |
| VODI |
0 |
63 |
174 |
2271 |
660 |
6 |
0 |
0 |
| ODI |
0 |
1 |
3 |
425 |
5199 |
2632 |
91 |
0 |
| CDI |
0 |
0 |
0 |
0 |
201 |
4860 |
2083 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
850 |
1560 |
0 |
|
|
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