Validation of sea ice concentration - American sector
Reference date: 2025-07-31
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-07-25:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10379 |
4445 |
278 |
290 |
10 |
0 |
0 |
0 |
| OW |
0 |
460 |
219 |
790 |
186 |
2 |
0 |
0 |
| VODI |
0 |
45 |
51 |
1294 |
2989 |
253 |
0 |
0 |
| ODI |
0 |
0 |
3 |
34 |
5050 |
2269 |
1 |
0 |
| CDI |
0 |
0 |
0 |
0 |
2670 |
13551 |
108 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
345 |
122 |
0 |
|
|
Date: 2025-07-27:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10560 |
4790 |
294 |
283 |
15 |
0 |
0 |
0 |
| OW |
0 |
476 |
237 |
817 |
155 |
1 |
0 |
0 |
| VODI |
0 |
59 |
50 |
1535 |
2994 |
193 |
9 |
0 |
| ODI |
0 |
0 |
0 |
365 |
5167 |
2110 |
37 |
0 |
| CDI |
0 |
0 |
0 |
0 |
1817 |
12439 |
1032 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
163 |
245 |
0 |
|
|
Date: 2025-07-29:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10648 |
5108 |
314 |
343 |
19 |
0 |
0 |
0 |
| OW |
2 |
457 |
270 |
908 |
102 |
1 |
0 |
0 |
| VODI |
0 |
36 |
50 |
1894 |
3138 |
79 |
1 |
0 |
| ODI |
0 |
0 |
0 |
260 |
5780 |
2837 |
182 |
0 |
| CDI |
0 |
0 |
0 |
0 |
878 |
10633 |
760 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
853 |
291 |
0 |
|
|
Date: 2025-07-31:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10939 |
4932 |
283 |
359 |
49 |
0 |
0 |
0 |
| OW |
0 |
454 |
315 |
962 |
86 |
1 |
0 |
0 |
| VODI |
0 |
71 |
123 |
1642 |
4062 |
74 |
0 |
0 |
| ODI |
0 |
0 |
0 |
39 |
5703 |
3946 |
31 |
0 |
| CDI |
0 |
0 |
0 |
0 |
209 |
9003 |
1412 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
6 |
1094 |
49 |
0 |
|
|
Date: 2025-08-02:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10942 |
5190 |
296 |
345 |
22 |
0 |
0 |
0 |
| OW |
0 |
636 |
522 |
1327 |
98 |
0 |
0 |
0 |
| VODI |
0 |
29 |
74 |
2537 |
2876 |
523 |
2 |
0 |
| ODI |
0 |
0 |
1 |
28 |
2678 |
5065 |
170 |
0 |
| CDI |
0 |
0 |
0 |
0 |
164 |
4963 |
6154 |
117 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
269 |
808 |
8 |
|
|
Date: 2025-08-04:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11038 |
5170 |
335 |
371 |
23 |
0 |
0 |
0 |
| OW |
0 |
725 |
491 |
1484 |
85 |
0 |
0 |
0 |
| VODI |
0 |
16 |
57 |
2966 |
2065 |
44 |
0 |
0 |
| ODI |
0 |
0 |
0 |
115 |
3510 |
2753 |
134 |
0 |
| CDI |
0 |
0 |
0 |
0 |
355 |
7304 |
4497 |
176 |
| VCDI |
0 |
0 |
0 |
0 |
6 |
295 |
1499 |
330 |
|
|
Date: 2025-08-06:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11182 |
5118 |
357 |
413 |
33 |
0 |
0 |
0 |
| OW |
0 |
725 |
454 |
1348 |
133 |
0 |
0 |
0 |
| VODI |
0 |
11 |
39 |
2576 |
1697 |
60 |
7 |
0 |
| ODI |
0 |
0 |
0 |
201 |
3311 |
1408 |
482 |
0 |
| CDI |
0 |
0 |
0 |
1 |
1003 |
6744 |
3552 |
108 |
| VCDI |
0 |
0 |
0 |
0 |
109 |
780 |
3697 |
295 |
|
|
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 |
5214 |
328 |
415 |
29 |
0 |
0 |
0 |
| OW |
0 |
852 |
497 |
953 |
130 |
4 |
0 |
0 |
| VODI |
0 |
132 |
240 |
2655 |
1406 |
203 |
5 |
0 |
| ODI |
0 |
0 |
0 |
297 |
3598 |
1982 |
516 |
0 |
| CDI |
0 |
0 |
0 |
0 |
853 |
6472 |
3966 |
88 |
| VCDI |
0 |
0 |
0 |
0 |
7 |
138 |
2113 |
1512 |
|
|
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