Abstract

This paper discusses the effect of humidity of the air on the scattering index (SI) and backscattering distribution (BSD) of an ensemble of small hygroscopic and inhomogeneous atmospheric particles in an approximation involving models of a polydispersed ensemble of clarified two-layer and homogeneous spherical particles. It is established that, in a variable humidity field in air, the SI is weakly sensitive to the internal structure of the particles. In the process of hydration of an ensemble of particles with internal structure of the clarifiedsphere (CS) type, clarification and clouding effects are detected for their BSD, and this can cause serious errors when interpreting the results of optical radar and laser probing of disperse media if the CS-type internal structure is neglected under conditions of variable humidity of the air.

Effect of relative humidity on the aerosol backscattering coefficient at 0.694- and 10.6-μm wavelengths

James W. Fitzgerald
Appl. Opt. 23(3) 411-418 (1984)

Effect of the particle-size distribution on the backscattering ratio in seawater

Osvaldo Ulloa, Shubha Sathyendranath, and Trevor Platt
Appl. Opt. 33(30) 7070-7077 (1994)

Polarization-resolved exact light backscattering by an ensemble of particles in air

Grégory David, Benjamin Thomas, Elodie Coillet, Alain Miffre, and Patrick Rairoux
Opt. Express 21(16) 18624-18639 (2013)

Mean diameters of hygroscopic particles as functions of relative humidity and integration limits

John C. Petheram
Appl. Opt. 21(18) 3233-3234 (1982)

Humidity effects on the backscatter/extinction ratio

G. de Leeuw, G. J. Kunz, and C. W. Lamberts
Appl. Opt. 25(22) 3971-3974 (1986)