Author(s)

K.N. Bower, T.W. Choularton, C. Bradbury, M. Flynn, M.W. Gallagher, K.M. Beswick and P.I. Williams

Abstract

Variations in the Cloud Microphysics, Cloud Water Chemistry, and Aerosol Properties during the ACE-2 Hillcloud Experiment 1997 A contribution to subproject PROCLOUD K.N. Bower, TW Choularton, C Bradbury, M. Flynn, M W Gallagher, KM Beswick and P.I. Williams The Physics Department, UMIST, PO Box 88, Manchester, M60 1QD, UK. Introduction Atmospheric Aerosols affect the Earth's radiative balance directly, by scattering-absorbing solar radiation and indirectly, by acting as cloud condensation nuclei (CCN) (i.e. influencing the albedo and life-time of clouds). However, aerosols are poorly characterised in GCMs due to a lack of comprehensive global data and a clear understanding of processes linking aerosol particles, aerosol precursor emissions and their radiative effects. Hence, tropospheric aerosols provide the largest uncertainty in GCM calculations of climate forcing due to anthropogenic changes in composition

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