Variation of Aerosol Size with Altitude in the Marine Boundary Layer Inverted from Multi-wavelength Lidar Backscatter Data
نویسندگان
چکیده
In June, 1990, as part of the GLOBE-2 experiment, calibrated lidar backscatter was measured as a function of altitude at wavelengths of 0.532, 1.064, 1.54 and 9.25 μm. We have used inversions of the data collected 300 km west of Honolulu to obtain bimodal aerosol distribution models throughout the lowest 1280 m of the marine boundary layer. The models suggest that the coarse mode concentrations remain relatively constant with altitude, while changes in the fine mode concentration cause most of the variation in the total backscatter. The coarse mode, although contributing little to the total scattering area, has a significant effect on the lidar ratios and thus on the overall optical depth.
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