Validation of sea ice concentration - Full domain
 Bulletin date: 2025-08-12
 Data source: OSI SAF N.H. sea ice concentration
 Model vs. observations, sea ice class contingency tables
 Date: 2025-08-12:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 63622 | 14556 | 41 | 132 | 33 | 4 | 0 | 0 |  
| OW | 67 | 1506 | 45 | 184 | 34 | 11 | 0 | 0 |  
| VODI | 81 | 2581 | 111 | 662 | 323 | 159 | 38 | 0 |  
| ODI | 2 | 2245 | 336 | 3212 | 2759 | 2017 | 346 | 0 |  
| CDI | 0 | 903 | 129 | 2346 | 7209 | 7984 | 1870 | 0 |  
| VCDI | 0 | 25 | 3 | 432 | 4468 | 8964 | 4993 | 0 |  | 
 Date: 2025-08-14:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 65443 | 17063 | 156 | 775 | 114 | 19 | 0 | 0 |  
| OW | 1 | 341 | 35 | 211 | 74 | 12 | 0 | 0 |  
| VODI | 0 | 647 | 52 | 568 | 393 | 180 | 19 | 0 |  
| ODI | 0 | 1997 | 279 | 2587 | 3124 | 1736 | 139 | 4 |  
| CDI | 0 | 995 | 111 | 2252 | 7345 | 7885 | 1312 | 32 |  
| VCDI | 0 | 43 | 9 | 667 | 4623 | 8615 | 4400 | 175 |  | 
 Date: 2025-08-16:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 65740 | 17562 | 200 | 968 | 253 | 31 | 0 | 0 |  
| OW | 0 | 256 | 18 | 174 | 71 | 24 | 0 | 0 |  
| VODI | 0 | 614 | 37 | 480 | 459 | 190 | 10 | 0 |  
| ODI | 0 | 2010 | 201 | 2420 | 3243 | 1534 | 174 | 6 |  
| CDI | 0 | 1100 | 114 | 2253 | 8048 | 6204 | 1720 | 79 |  
| VCDI | 0 | 113 | 36 | 834 | 5123 | 7203 | 4505 | 426 |  | 
 Date: 2025-08-18:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 66580 | 17008 | 185 | 1189 | 406 | 100 | 9 | 0 |  
| OW | 8 | 241 | 11 | 125 | 109 | 24 | 0 | 0 |  
| VODI | 38 | 564 | 40 | 401 | 546 | 147 | 8 | 0 |  
| ODI | 22 | 2280 | 193 | 1994 | 3391 | 1477 | 166 | 6 |  
| CDI | 6 | 1254 | 139 | 2119 | 8330 | 5841 | 1603 | 75 |  
| VCDI | 0 | 178 | 36 | 890 | 5169 | 7071 | 4148 | 306 |  | 
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