Scientific Objective:
VTMX (Vertical Transport and MiXing) is a new program of the Dept of Energy's Environmental Meteorology Program (EMP). It is concerned with vertical transport and mixing in the boundary layer, particularly in stably stratified conditions, weak or intermittent turbulence, and morning/evening transitions. VTMX is centered primarily around urban basins or valleys and will investigate phenomena such as formation and evolution of inversions and motion of pollutants around layers trapped in valleys. The first field campaign for VTMX is centered on the Salt Lake Valley over the month of October, 2000. NCAR is one of several groups participating in this campaign.