Measurements of atmospheric aerosol backscatter coefficients, using a coherent CO2 lidar at 9.25- and 10.6-μm wavelengths, are described. Vertical profiles of the volume backscatter coefficient β have been measured to a 10-km altitude over the Pasadena, Calif., region. These measurements indicate a wide range of variability in β both in and above the local boundary layer. Certain profiles also indicate a significant enhancement in β at the 9.25-μm wavelength compared with β at the 10.6-μm wavelength, which possibly indicates a major contribution to the volume backscatter from ammonium sulfate aerosol particles.
© 1984 Optical Society of America
Original Manuscript: December 5, 1983
Published: August 1, 1984
Robert T. Menzies, Michael J. Kavaya, Pierre H. Flamant, and David A. Haner, "Atmospheric aerosol backscatter measurements using a tunable coherent CO2 lidar," Appl. Opt. 23, 2510-2517 (1984)