Validation of sea ice concentration - Asian sector
 Bulletin date: 2025-09-09
 Data source: OSI SAF N.H. sea ice concentration
 Model vs. observations, sea ice class contingency tables
 Date: 2025-09-09:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 11604 | 4822 | 0 | 22 | 9 | 0 | 0 | 0 |  
| OW | 0 | 293 | 7 | 40 | 9 | 0 | 0 | 0 |  
| VODI | 0 | 703 | 33 | 214 | 68 | 1 | 0 | 0 |  
| ODI | 0 | 557 | 75 | 980 | 653 | 258 | 0 | 0 |  
| CDI | 0 | 113 | 33 | 1047 | 2763 | 2819 | 5 | 0 |  
| VCDI | 0 | 3 | 0 | 29 | 1378 | 3697 | 11 | 0 |  | 
 Date: 2025-09-11:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 11616 | 5385 | 24 | 108 | 22 | 0 | 0 | 0 |  
| OW | 0 | 242 | 10 | 63 | 16 | 0 | 0 | 0 |  
| VODI | 0 | 405 | 12 | 192 | 68 | 5 | 0 | 0 |  
| ODI | 0 | 315 | 34 | 710 | 442 | 160 | 3 | 0 |  
| CDI | 0 | 106 | 26 | 827 | 1373 | 2231 | 269 | 0 |  
| VCDI | 0 | 13 | 1 | 63 | 906 | 5956 | 643 | 0 |  | 
 Date: 2025-09-13:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 11665 | 5506 | 19 | 240 | 44 | 3 | 0 | 0 |  
| OW | 0 | 185 | 5 | 66 | 36 | 0 | 0 | 0 |  
| VODI | 0 | 243 | 12 | 155 | 112 | 10 | 0 | 0 |  
| ODI | 0 | 292 | 16 | 430 | 331 | 110 | 6 | 0 |  
| CDI | 0 | 141 | 29 | 792 | 962 | 1269 | 286 | 0 |  
| VCDI | 0 | 9 | 0 | 180 | 1131 | 6474 | 1487 | 0 |  | 
 Date: 2025-09-15:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 11659 | 5707 | 35 | 346 | 135 | 36 | 0 | 0 |  
| OW | 0 | 108 | 6 | 55 | 34 | 11 | 0 | 0 |  
| VODI | 0 | 173 | 6 | 124 | 71 | 29 | 2 | 0 |  
| ODI | 0 | 229 | 15 | 370 | 226 | 145 | 44 | 0 |  
| CDI | 0 | 152 | 20 | 617 | 901 | 1239 | 333 | 0 |  
| VCDI | 0 | 20 | 3 | 97 | 655 | 6595 | 2048 | 0 |  | 
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