Chimney Effect: Warm air rises from the source, cools, then drops a distance away from the source.

 

">Chimney
 Effect: Warm air rises from the source, cools, then drops a distance away from the source.

 

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VSRDA Glossary

  • POD
    POD (Probability of Detection): The chance that an object or missing person will be detected if present.  
  • POA
    POA (Probability of Area): The chance that a missing person (or clue) is in the search Area.  
  • PLS
    PLS (Point Last Seen): a point where a witness actually saw the subject. The PLS is usually the IPP (Initial Planning Point).