Validation of sea ice concentration - Asian sector
 Bulletin date: 2025-09-16
 Data source: OSI SAF N.H. sea ice concentration
 Model vs. observations, sea ice class contingency tables
 Date: 2025-09-16:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 11732 | 4663 | 1 | 14 | 1 | 1 | 0 | 0 |  
| OW | 0 | 211 | 9 | 36 | 13 | 0 | 0 | 0 |  
| VODI | 0 | 676 | 22 | 192 | 76 | 8 | 0 | 0 |  
| ODI | 0 | 730 | 46 | 604 | 329 | 90 | 3 | 0 |  
| CDI | 0 | 148 | 21 | 685 | 930 | 1087 | 456 | 0 |  
| VCDI | 0 | 2 | 0 | 16 | 619 | 5538 | 3287 | 0 |  | 
 Date: 2025-09-18:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 11903 | 5185 | 10 | 86 | 24 | 0 | 0 | 0 |  
| OW | 0 | 271 | 4 | 72 | 27 | 2 | 0 | 0 |  
| VODI | 0 | 439 | 18 | 262 | 109 | 7 | 0 | 0 |  
| ODI | 0 | 482 | 28 | 444 | 292 | 62 | 1 | 0 |  
| CDI | 0 | 115 | 13 | 603 | 677 | 1169 | 264 | 0 |  
| VCDI | 0 | 2 | 0 | 70 | 387 | 6100 | 3118 | 0 |  | 
 Date: 2025-09-20:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 12268 | 5493 | 13 | 185 | 56 | 8 | 0 | 0 |  
| OW | 0 | 150 | 7 | 61 | 17 | 4 | 0 | 0 |  
| VODI | 0 | 298 | 6 | 174 | 60 | 7 | 0 | 0 |  
| ODI | 0 | 347 | 27 | 365 | 170 | 71 | 2 | 0 |  
| CDI | 0 | 127 | 22 | 374 | 484 | 1068 | 385 | 0 |  
| VCDI | 0 | 19 | 6 | 135 | 334 | 4656 | 4847 | 0 |  | 
 Date: 2025-09-22:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 12117 | 5730 | 36 | 239 | 81 | 30 | 0 | 0 |  
| OW | 0 | 86 | 8 | 70 | 55 | 4 | 0 | 0 |  
| VODI | 0 | 121 | 17 | 143 | 113 | 21 | 0 | 0 |  
| ODI | 0 | 145 | 21 | 278 | 276 | 88 | 22 | 0 |  
| CDI | 0 | 31 | 9 | 258 | 408 | 694 | 742 | 0 |  
| VCDI | 0 | 8 | 1 | 74 | 292 | 1944 | 8084 | 0 |  | 
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