Validation of sea ice concentration - Asian sector
 Bulletin date: 2025-09-23
 Data source: OSI SAF N.H. sea ice concentration
 Model vs. observations, sea ice class contingency tables
 Date: 2025-09-23:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 11805 | 5164 | 5 | 15 | 1 | 0 | 0 | 0 |  
| OW | 0 | 181 | 5 | 24 | 3 | 0 | 0 | 0 |  
| VODI | 0 | 316 | 16 | 231 | 42 | 6 | 5 | 0 |  
| ODI | 0 | 369 | 24 | 413 | 276 | 159 | 20 | 0 |  
| CDI | 0 | 77 | 8 | 326 | 645 | 623 | 541 | 8 |  
| VCDI | 0 | 0 | 0 | 22 | 155 | 1279 | 8202 | 1280 |  | 
 Date: 2025-09-25:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 11490 | 5354 | 12 | 58 | 13 | 2 | 0 | 0 |  
| OW | 0 | 175 | 11 | 43 | 16 | 2 | 0 | 0 |  
| VODI | 0 | 232 | 13 | 146 | 44 | 8 | 1 | 0 |  
| ODI | 0 | 188 | 17 | 265 | 423 | 80 | 14 | 0 |  
| CDI | 0 | 47 | 10 | 179 | 502 | 409 | 354 | 0 |  
| VCDI | 0 | 8 | 0 | 51 | 360 | 1490 | 8527 | 1702 |  | 
 Date: 2025-09-27:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 11344 | 5405 | 6 | 91 | 47 | 1 | 0 | 0 |  
| OW | 0 | 149 | 7 | 41 | 12 | 3 | 1 | 0 |  
| VODI | 0 | 180 | 7 | 110 | 77 | 9 | 4 | 0 |  
| ODI | 0 | 171 | 2 | 150 | 226 | 116 | 41 | 0 |  
| CDI | 0 | 54 | 5 | 113 | 258 | 450 | 508 | 0 |  
| VCDI | 0 | 27 | 2 | 57 | 303 | 1729 | 8888 | 1652 |  | 
 Date: 2025-09-29:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 11547 | 5142 | 10 | 86 | 18 | 0 | 0 | 0 |  
| OW | 0 | 131 | 2 | 28 | 14 | 0 | 0 | 0 |  
| VODI | 0 | 250 | 3 | 48 | 46 | 3 | 1 | 0 |  
| ODI | 0 | 277 | 14 | 137 | 124 | 64 | 11 | 0 |  
| CDI | 0 | 165 | 12 | 137 | 255 | 338 | 271 | 0 |  
| VCDI | 0 | 133 | 8 | 248 | 497 | 2412 | 9633 | 181 |  | 
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