Ground-based Lidar Operations

Instrument Specifications

TEA CO2 10 µm Doppler Lidar
Measures:radial wind, aerosol backscatter
Spatial coverage:full-hemispheric scans
Range:1 - 10 (or more) km
Resolution:300 m
Ozone Profiling Atmospheric Lidar (OPAL)
Measures:ozone, aerosol backscatter
Spatial coverage:vertical slice scan (30° - 150°), horizontal
Range:0.3 - 3 km
Resolution:90 m (ozone), 15 m (aerosol)

Platform: TEA CO2 Doppler Lidar and OPAL colocated at La Porte Municipal Airport ground site

Availability: 18 August - 15 September 2000

Operation: 0600 - 2200 CDT most days

Major objectives:

  • 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

Scan Strategy:

  1. TEA CO2 Doppler lidar More Details...
  2. 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

  3. OPAL
  4. Series of 5-min stares at 2, 10, 30 and 90 degrees elevation repeated every 20 minutes. 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.