Validation of sea ice concentration - American sector
Reference date: 2025-07-17
Model: GLO MFC - NEMO
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2025-07-11:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6545 |
5528 |
186 |
372 |
69 |
5 |
0 |
0 |
| OW |
0 |
557 |
158 |
483 |
136 |
5 |
5 |
0 |
| VODI |
0 |
45 |
47 |
498 |
2054 |
595 |
0 |
0 |
| ODI |
0 |
0 |
1 |
18 |
2703 |
2233 |
27 |
0 |
| CDI |
0 |
0 |
0 |
9 |
3478 |
16321 |
2389 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
499 |
880 |
0 |
|
|
Date: 2025-07-13:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
6744 |
5739 |
221 |
433 |
73 |
1 |
0 |
0 |
| OW |
0 |
498 |
142 |
506 |
201 |
9 |
2 |
0 |
| VODI |
0 |
50 |
32 |
406 |
1817 |
423 |
28 |
0 |
| ODI |
0 |
2 |
1 |
13 |
1917 |
3466 |
336 |
0 |
| CDI |
0 |
0 |
0 |
10 |
3444 |
15792 |
2862 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
226 |
448 |
0 |
|
|
Date: 2025-07-15:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7179 |
5620 |
255 |
332 |
37 |
0 |
0 |
0 |
| OW |
0 |
508 |
166 |
645 |
188 |
0 |
0 |
0 |
| VODI |
0 |
31 |
26 |
655 |
2215 |
229 |
0 |
0 |
| ODI |
0 |
0 |
0 |
27 |
4474 |
1987 |
53 |
0 |
| CDI |
0 |
2 |
2 |
10 |
3620 |
14431 |
2235 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
5 |
356 |
558 |
0 |
|
|
Date: 2025-07-17:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
7721 |
5401 |
205 |
321 |
18 |
0 |
0 |
0 |
| OW |
0 |
554 |
187 |
603 |
85 |
0 |
0 |
0 |
| VODI |
0 |
32 |
32 |
861 |
2672 |
267 |
0 |
0 |
| ODI |
0 |
0 |
0 |
27 |
4898 |
2092 |
14 |
0 |
| CDI |
0 |
0 |
2 |
13 |
2307 |
14238 |
2293 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
1 |
329 |
673 |
0 |
|
|
Date: 2025-07-19:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
8297 |
5254 |
202 |
279 |
15 |
0 |
0 |
0 |
| OW |
0 |
545 |
207 |
666 |
118 |
2 |
0 |
0 |
| VODI |
0 |
35 |
35 |
842 |
2915 |
367 |
0 |
0 |
| ODI |
0 |
2 |
2 |
13 |
3261 |
3151 |
47 |
0 |
| CDI |
0 |
0 |
0 |
4 |
1722 |
16095 |
631 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
1117 |
22 |
0 |
|
|
Date: 2025-07-21:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
9617 |
4458 |
262 |
282 |
20 |
0 |
0 |
0 |
| OW |
2 |
564 |
219 |
689 |
185 |
5 |
0 |
0 |
| VODI |
0 |
50 |
38 |
1110 |
2103 |
243 |
6 |
0 |
| ODI |
0 |
5 |
0 |
25 |
4587 |
2196 |
86 |
0 |
| CDI |
0 |
0 |
0 |
0 |
2268 |
14227 |
1499 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
540 |
560 |
0 |
|
|
Date: 2025-07-23:
| Best estimate |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10248 |
4204 |
277 |
288 |
6 |
0 |
0 |
0 |
| OW |
0 |
494 |
236 |
696 |
186 |
1 |
0 |
0 |
| VODI |
0 |
41 |
44 |
1428 |
2559 |
146 |
8 |
0 |
| ODI |
0 |
0 |
0 |
83 |
5560 |
1244 |
10 |
0 |
| CDI |
0 |
0 |
0 |
0 |
1975 |
13881 |
1021 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
668 |
542 |
0 |
|
|
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 |
10381 |
4446 |
278 |
289 |
10 |
0 |
0 |
0 |
| OW |
0 |
459 |
219 |
790 |
181 |
2 |
0 |
0 |
| VODI |
0 |
45 |
51 |
1296 |
2987 |
246 |
0 |
0 |
| ODI |
0 |
0 |
3 |
33 |
5055 |
2277 |
1 |
0 |
| CDI |
0 |
0 |
0 |
0 |
2672 |
13552 |
108 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
343 |
122 |
0 |
|
|
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