Comment on "Classification of aerosol properties derived from AERONET direct sun data" by G. P. Gobbi et al. (2007) N. T. O'Neill CARTEL, Université de Sherbrooke, Sherbrooke, Québec, Canada
Abstract. It is pointed out that the graphical, aerosol classification method of
Gobbi et al. (2007) can be interpreted as a manifestation of
fundamental analytical relations whose existance depends on the simple
assumption that the optical effects of aerosols are essentially
bimodal in nature. The families of contour lines in their "Ada"
curvature space are essentially empirical and discretized
illustrations of analytical parabolic forms in (α, α')
space (the space formed by the continuously differentiable Angstrom
exponent and its spectral derivative).
Citation: O'Neill, N. T.: Comment on "Classification of aerosol properties derived from AERONET direct sun data" by G. P. Gobbi et al. (2007), Atmos. Chem. Phys. Discuss., 9, 175-182, doi:10.5194/acpd-9-175-2009, 2009.