Articles | Volume 10, issue 20
25 Oct 2010
 | 25 Oct 2010

Comment on "Classification of aerosol properties derived from AERONET direct sun data" by Gobbi et al. (2007)

N. T. O'Neill

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).

Final-revised paper