Validation of sea ice concentration - American sector
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 |
11843 |
5449 |
362 |
252 |
19 |
0 |
0 |
0 |
| OW |
0 |
2277 |
708 |
960 |
44 |
2 |
0 |
0 |
| VODI |
0 |
99 |
163 |
3106 |
858 |
19 |
1 |
0 |
| ODI |
0 |
0 |
0 |
227 |
5279 |
3292 |
373 |
10 |
| CDI |
0 |
0 |
0 |
1 |
235 |
3844 |
2805 |
117 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
449 |
2858 |
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 |
12292 |
5292 |
328 |
260 |
23 |
0 |
0 |
0 |
| OW |
0 |
2670 |
864 |
1199 |
31 |
2 |
0 |
0 |
| VODI |
0 |
72 |
124 |
2618 |
1062 |
21 |
0 |
0 |
| ODI |
0 |
0 |
0 |
188 |
5323 |
3552 |
385 |
0 |
| CDI |
0 |
0 |
0 |
3 |
224 |
2754 |
3072 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
163 |
3318 |
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 |
12617 |
5180 |
243 |
236 |
23 |
0 |
0 |
0 |
| OW |
7 |
3158 |
1017 |
1314 |
37 |
0 |
0 |
0 |
| VODI |
0 |
62 |
95 |
2198 |
839 |
21 |
0 |
0 |
| ODI |
0 |
0 |
4 |
308 |
5416 |
2927 |
108 |
0 |
| CDI |
0 |
0 |
0 |
4 |
158 |
4244 |
2108 |
34 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
1115 |
2315 |
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 |
13154 |
4963 |
209 |
172 |
11 |
0 |
0 |
0 |
| OW |
6 |
4158 |
905 |
857 |
18 |
0 |
0 |
0 |
| VODI |
0 |
101 |
248 |
2137 |
533 |
15 |
0 |
0 |
| ODI |
0 |
0 |
6 |
439 |
5201 |
2608 |
183 |
0 |
| CDI |
0 |
0 |
0 |
1 |
243 |
3698 |
3047 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
6 |
574 |
2347 |
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 |
13059 |
5169 |
196 |
173 |
7 |
0 |
0 |
0 |
| OW |
0 |
4621 |
955 |
853 |
22 |
0 |
0 |
0 |
| VODI |
0 |
61 |
165 |
2180 |
730 |
3 |
0 |
0 |
| ODI |
0 |
1 |
4 |
371 |
5024 |
2798 |
142 |
0 |
| CDI |
0 |
0 |
0 |
0 |
226 |
4564 |
2856 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
545 |
1114 |
0 |
|
|
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 |
14056 |
4348 |
173 |
195 |
15 |
0 |
0 |
0 |
| OW |
0 |
5121 |
808 |
891 |
45 |
0 |
0 |
0 |
| VODI |
0 |
25 |
126 |
1956 |
655 |
5 |
0 |
0 |
| ODI |
0 |
0 |
0 |
402 |
4909 |
2488 |
98 |
0 |
| CDI |
0 |
0 |
0 |
0 |
352 |
6021 |
1769 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
497 |
884 |
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 |
14361 |
4157 |
220 |
229 |
31 |
0 |
0 |
0 |
| OW |
0 |
5216 |
751 |
1067 |
46 |
0 |
0 |
0 |
| VODI |
0 |
13 |
38 |
1587 |
699 |
5 |
0 |
0 |
| ODI |
0 |
0 |
0 |
343 |
4443 |
2373 |
53 |
0 |
| CDI |
0 |
0 |
0 |
2 |
353 |
6904 |
1469 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
980 |
499 |
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 |
14600 |
4100 |
219 |
215 |
45 |
0 |
0 |
0 |
| OW |
83 |
5190 |
642 |
989 |
87 |
0 |
0 |
0 |
| VODI |
0 |
15 |
51 |
1258 |
843 |
26 |
0 |
0 |
| ODI |
0 |
0 |
1 |
298 |
4202 |
1828 |
22 |
0 |
| CDI |
0 |
0 |
0 |
0 |
513 |
8433 |
897 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
994 |
288 |
0 |
|
|
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