Abstract

Atmospheric aerosol backscatter measurements taken with a continuous-wave focused Doppler lidar at 9.1-µm wavelength were obtained over western North America and the Pacific Ocean from 13 to 26 September 1995 as part of a NASA airborne mission. Backscatter variability was measured for ∼52 flight hours, covering an equivalent horizontal distance of ∼30,000 km in the troposphere. Some quasi-vertical backscatter profiles were also obtained during various ascents and descents at altitudes that ranged from ∼0.1 to 12 km. Similarities and differences for aerosol loading over land and ocean were observed. A midtropospheric aerosol backscatter background mode near 3 × 10-11 to 1 × 10-10 m-1 sr-1 was obtained, which is consistent with those of previous airborne and ground-based data sets.

© 1999 Optical Society of America

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