Ground-based lidars at TexAQS 2000

• Characterize the dynamics of the gulf, bay, and land breezes andtheir effect on pollutant distribution
• Document the temporal evolution and 2-D structure of ozone andaerosol concentration

Series of survey scans executed on the hour and half-hour:

PPIs 0, 2, 4, 6, 10, 25 degrees elevation, 360 degrees in azimuth
RHIs 0, 30, 60, 90, 120, 150 degrees azimuth, horizon-to-horizon

Special scans (PPIs, RHIs, Raster scans) to fill out the half hour

B. OPAL

Series of 5-min stares at 2, 10, 30 and 90 degrees elevation repeated every 20minutes. This provides composite ozone and aerosol profiles from near the ground to 3km AGL at a time resolution of 20 minutes.

In case of transient events (e.g. breeze front passage) switch to extended stares at appropriate angle as advised by TEACO2 operators.