title: Aureolegraph internal scattering correction.
abstract: Two methods of determining instrumental scattering for correcting aureolegraph measurements of particulate solar scattering are presented. One involves subtracting measurements made with and without an external occluding ball and the other is a modification of the Langley Plot method and involves extrapolating aureolegraph measurements collected through a large range of solar zenith angles. Examples of internal scattering correction determinations using the latter method show similar power-law dependencies on scattering, but vary by roughly a factor of 8 and suggest that changing aerosol conditions during the determinations render this method problematic. Examples of corrections of scattering profiles using the former method are presented for a range of atmospheric particulate layers from aerosols to cumulus and cirrus clouds.
authors.affiliation: Applied Physics Group, Visidyne, Inc., 429 Stanley Drive, Santa Barbara, California 93105, USA. devore@visidyne.com
authors.forename: John
authors.initials: J
authors.lastname: DeVore
authors.forename: Dennis
authors.initials: D
authors.lastname: Villanucci
authors.forename: Andrew
authors.initials: A
authors.lastname: LePage