title: Estimation of atmospheric turbidity from the burned traces of the Campbell-Stokes sunshine recorder.
abstract: A method is proposed to determine the atmospheric turbidity factor from records of sunshine autographs. These records have been available for half a century. The proposed method is applied to data from Denmark and compared with electrical conductivities in ice cores of Greenland and Lamb's dust veil index; both are measures of past volcanism.
authors.forename: R
authors.initials: R
authors.lastname: Jaenicke
authors.forename: F
authors.initials: F
authors.lastname: Kasten