Validation of sea ice concentration - American sector
 Bulletin date: 2021-08-03
 Data source: OSI SAF N.H. sea ice concentration
 Model vs. observations, sea ice class contingency tables
 Date: 2021-08-03:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 1792 | 4235 | 0 | 198 | 56 | 3 | 0 | 0 |  
| OW | 0 | 123 | 0 | 210 | 100 | 32 | 1 | 0 |  
| VODI | 0 | 178 | 0 | 349 | 775 | 920 | 147 | 0 |  
| ODI | 0 | 119 | 0 | 310 | 1557 | 4266 | 1519 | 48 |  
| CDI | 0 | 42 | 0 | 183 | 2093 | 9244 | 5554 | 243 |  
| VCDI | 0 | 0 | 0 | 8 | 63 | 435 | 514 | 12 |  | 
 Date: 2021-08-05:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 2296 | 4124 | 0 | 304 | 174 | 44 | 0 | 2 |  
| OW | 0 | 115 | 0 | 95 | 191 | 59 | 6 | 16 |  
| VODI | 0 | 187 | 0 | 241 | 1025 | 631 | 91 | 65 |  
| ODI | 0 | 180 | 0 | 329 | 2330 | 3368 | 1360 | 243 |  
| CDI | 0 | 62 | 0 | 278 | 2612 | 8239 | 4905 | 786 |  
| VCDI | 0 | 0 | 0 | 4 | 110 | 369 | 456 | 32 |  | 
 Date: 2021-08-07:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 1634 | 4727 | 0 | 340 | 223 | 84 | 9 | 0 |  
| OW | 0 | 118 | 0 | 95 | 258 | 78 | 28 | 0 |  
| VODI | 0 | 216 | 0 | 233 | 1036 | 775 | 122 | 0 |  
| ODI | 0 | 180 | 0 | 328 | 2521 | 3626 | 1130 | 65 |  
| CDI | 0 | 67 | 0 | 203 | 3016 | 8473 | 4803 | 218 |  
| VCDI | 0 | 0 | 0 | 7 | 100 | 189 | 403 | 24 |  | 
 Date: 2021-08-09:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 1112 | 5159 | 0 | 384 | 335 | 86 | 1 | 0 |  
| OW | 0 | 106 | 0 | 78 | 248 | 134 | 7 | 0 |  
| VODI | 0 | 225 | 0 | 265 | 1172 | 826 | 124 | 3 |  
| ODI | 0 | 159 | 0 | 385 | 2662 | 3141 | 1576 | 226 |  
| CDI | 0 | 68 | 0 | 309 | 3469 | 6761 | 4838 | 643 |  
| VCDI | 0 | 0 | 0 | 6 | 150 | 320 | 340 | 11 |  | 
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