Related Experiment Video
Updated: Jun 6, 2026

Measurement of Aerosols Optical Thickness of the Atmosphere using the GLOBE Handheld Sun Photometer
Published on: May 29, 2019
Compensational three-wavelength differential-absorption lidar technique for reducing the influence of differential
Abstract:
A three-wavelength differential-absorption lidar (DIAL) technique for the ultraviolet spectral region is presented that reduces the influence of aerosol differential scattering on measured ozone-concentration profiles. The principal advantage of this approach is that, to a good first approximation, no correction for aerosol differential-extinction and backscattering effects are needed. Therefore, one avoids having to obtain an aerosol extinction-coefficient profile at a reference wavelength; nor does one have to invoke questionable assumptions regarding the spectral dependence of the aerosol total and backscatter coefficients.
Related Concept Videos
UV–Vis Spectrometers
Atomic Absorption Spectroscopy: Interference
Spectral interference occurs when signals from other elements or molecules overlap with the analyte signal, falsely elevating or masking the analyte's absorbance. This interference can be corrected using Zeeman,...
Atomic Absorption Spectroscopy: Instrumentation
The atomizer used in AAS can be either a flame atomizer or an...
Atomic Absorption Spectroscopy: Atomization Methods

