Validation of sea ice concentration - European sector
 Bulletin date: 2023-04-11
 Data source: OSI SAF N.H. sea ice concentration
 Model vs. observations, sea ice class contingency tables
 Date: 2023-04-11:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 16876 | 15224 | 0 | 896 | 474 | 93 | 0 | 0 |  
| OW | 0 | 144 | 0 | 134 | 96 | 36 | 1 | 0 |  
| VODI | 0 | 178 | 0 | 199 | 187 | 61 | 3 | 0 |  
| ODI | 0 | 70 | 0 | 132 | 283 | 264 | 86 | 0 |  
| CDI | 0 | 108 | 0 | 149 | 619 | 979 | 699 | 38 |  
| VCDI | 0 | 30 | 0 | 115 | 1064 | 4491 | 6630 | 6309 |  | 
 Date: 2023-04-13:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 16942 | 15539 | 0 | 966 | 491 | 108 | 2 | 0 |  
| OW | 0 | 86 | 0 | 102 | 108 | 23 | 8 | 0 |  
| VODI | 0 | 71 | 0 | 142 | 201 | 96 | 30 | 0 |  
| ODI | 0 | 57 | 0 | 126 | 325 | 378 | 253 | 0 |  
| CDI | 0 | 77 | 0 | 175 | 510 | 945 | 803 | 24 |  
| VCDI | 0 | 65 | 0 | 175 | 959 | 4213 | 7030 | 5638 |  | 
 Date: 2023-04-15:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 17511 | 15247 | 0 | 901 | 439 | 80 | 3 | 0 |  
| OW | 0 | 90 | 0 | 111 | 73 | 15 | 6 | 0 |  
| VODI | 0 | 115 | 0 | 143 | 211 | 110 | 69 | 0 |  
| ODI | 0 | 91 | 0 | 130 | 351 | 440 | 308 | 0 |  
| CDI | 0 | 109 | 0 | 157 | 474 | 1010 | 846 | 9 |  
| VCDI | 0 | 89 | 0 | 200 | 1033 | 4394 | 6884 | 5019 |  | 
 Date: 2023-04-17:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 18058 | 14853 | 0 | 877 | 444 | 61 | 1 | 0 |  
| OW | 0 | 80 | 0 | 97 | 77 | 21 | 1 | 0 |  
| VODI | 0 | 104 | 0 | 161 | 200 | 81 | 50 | 0 |  
| ODI | 0 | 89 | 0 | 154 | 372 | 409 | 224 | 0 |  
| CDI | 0 | 120 | 0 | 167 | 543 | 1017 | 682 | 19 |  
| VCDI | 0 | 81 | 0 | 213 | 1149 | 4558 | 6155 | 5550 |  | 
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