title: Scattered light corrections to Sun photometry: analytical results for single and multiple scattering regimes.
abstract: Analytical equations for the diffused scattered light correction factor of Sun photometers are derived and analyzed. It is shown that corrections are weakly dependent on the atmospheric optical thickness. They are influenced mostly by the size of aerosol particles encountered by sunlight on its way to a Sun photometer. In addition, the accuracy of the small-angle approximation used in the work is studied with numerical calculations based on the exact radiative transfer equation.
authors.affiliation: Institute of Remote Sensing, O. Hahn Allee 1, D-28334 Bremen, Germany. alexk@iup.physik.unibremen.de
authors.forename: Alexander A
authors.initials: AA
authors.lastname: Kokhanovsky
mesh_terms: D000465:Algorithms; D016477:Artifacts; D001272:Atmosphere / Q000032:analysis / Q000737:chemistry*; D004784:Environmental Monitoring / Q000379:methods; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D010783:Photometry / Q000379:methods*; D015203:Reproducibility of Results; D012542:Scattering, Radiation; D012680:Sensitivity and Specificity; D013472:Sunlight