Please refer to the following document for additional information, including calibration procedures: E. Boss, D. Swift, L. Taylor, P. Brickley, R. Zaneveld, S. Riser, M.J. Perry and P.G. Strutton. Observations of pigment and particle distributions in the Western North Atlantic from an autonomous float and ocean color satellite. Limno. Oceanogr., in press. This document may be downloaded from our website at: http://misclab.umeoce.maine.edu/boss/scientific_articles.php or email us at emmanuel.boss@maine.edu.