Detection of Atmospheric Carbon Dioxide from a Shuttle-Borne Lidar.
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
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Remote sensing of atmospheric carbon dioxide from a shuttle-borne differential absorption lidar DIAL was investigated. The investigation followed the basic frequency recommendations of L. C. Korb, which included on-resonance frequency at the P34 line of the 110-030 sub I absorption band of CO2. Extinction coefficients for CO2, H2O, CO, O3, Rayleigh, and Mie scattering were determined to compute estimated return signal strengths from various altitudes. Direct detection was found to be unsuitable, but heterodyne detection provided adequate signal-to-noise ratios. Cross sections for hot CO2 were also calculated, and maximum detectable CO2 concentrations were determined. Finally, an error analysis of predicted CO2 concentrations was made, which determined that due to the large CO2 on-resonance extinction coefficient, accurate measurements of CO2 below five kilometers could not be made. Keywords Water Carbon monoxide Ozone. Theses
- Atmospheric Physics