VISITORS: Effective 21 July 2014, Visitor Center Security will no longer accept IDs from some US states for site access. Please see security procedures for details.
  Texas Air Quality Study 2006 logo

TexAQS 2006 TOPAZ Lidar data

August 14 - Final Data


Previous Flight Archive Calendar Next Flight

Flight #8
Takeoff: 13:24 CDT
Total flight time: 6.1 hours

Houston urban and ship-channel pollution was released into clean, southerly flow of 4 to 5 m/s, producing transport of the pollution plumes to the north. Sampling legs took place north of the city in approximately west-east flight legs. Data from the first leg, about 20 km north of the sources/urban area, distinguished two ozone and aerosol concentration maxima, one from the urban area of approx. 100 ppb, and the second from the ship channel industrial sources of approx. 120 ppb or more. Cross sections from the second leg showed two less distinct maxima as the plumes appeared to be merging, and the third and fourth legs farther north showed one wider plume, with peak concentrations exceeding 120 ppb. None of the high concentrations was observed in the surface ozone measurement network.

Select an image to view full resolution

Ozone Cross-section
Ozone cross-section - August 14
download ICARTT format data (ict file)
download simple ASCII data (txt file)
Aerosol Cross-section
Aerosol cross-section - August 14
download ICARTT format data (ict file)
download simple ASCII data (txt file)
Ozone Map
Ozone map - August 14
Mixed Layer Height Map
Mixed layer height map - August 14
download ICARTT format data (ict file)
download simple ASCII data (txt file)