@Article{acpd-5-9355-2005, AUTHOR = {Schmid, O. and Artaxo, P. and Arnott, W. P. and Chand, D. and Gatti, L. V. and Frank, G. P. and Hoffer, A. and Schnaiter, M. and Andreae, M. O.}, TITLE = {Spectral light absorption by ambient aerosols influenced by biomass burning in the Amazon Basin – I. Comparison and field calibration of absorption measurement techniques}, JOURNAL = {Atmospheric Chemistry and Physics Discussions}, VOLUME = {5}, YEAR = {2005}, NUMBER = {5}, PAGES = {9355--9404}, URL = {http://www.atmos-chem-phys-discuss.net/5/9355/2005/}, ISSN = {1680-7367} }