0 Absorption coefficients by aerosols in remote areas: a new approach to decouple dust and black carbon absorption coefficients using seven-wavelength Aethalometer data P. Fialho a,* , A.D.A. Hansen b , R.E. Honrath c a Grupo de Química e Física da Atmosfera, Universidade dos Açores, PT9701-851 Terra Chã, Portugal b Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA c Department of Civil & Environmental Engineering, Michigan Technological University, Houghton, MI 49931, USA (Accepted for publication in Journal of Aerosol Science 2004) Running Title: DUST AND BC ABSORPTION COEFFICIENTS * Corresponding author. Tel.: +351 295 402 237; Fax: +351 295 402 205. E-mail address: paulo.fialho@angra.uac.pt (P. Fialho)