Boulder, CO, Foothills Lab: 3 November 2006: 9:22:11 UTC to 10:14:19 UTC

(This animation created by Bob Rilling.)

Quicktime [22 MB]

This 52-minute PPI sector scan sequence at 4-degree elevation angle reveals how wave motions in a stable boundary layer can cause apparent motion of the aerosol backscatter. Range rings are in 500 meter increments. Warm colors (orange and reds) colors are used to indicate higher intensity aerosol backscattering while cool colors (blues and purples) indicatelower aerosol backscattering.

Boulder, CO, Foothills Lab: 1 November 2006: 8:53:22 UTC to 9:25:50 UTC

(This animation created by Bob Rilling.)

Quicktime [19.3 MB]

This 32-minute RHI scan sequence shows the vertical structure of the atmospheric boundary layer during stable conditions. Range rings are in 1 km intervals. Pollutants and other factors leading to high optical scattering (i.e. increased humidity) are trapped below approximately 500 meters altitude. Atmospheric wave activity is very apparent during the animation.