International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2572

Full Length Research Paper

Simple technique to evaluate effects of nonsphericity and orientation on particle size distribution retrieval

Jian-Qi Zhao
State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China. 
Email: [email protected]

  •  Accepted: 14 November 2011
  •  Published: 30 November 2011



This paper reports the formulation of an algorithm based on the anomalous diffraction theory to infer the particle size distribution (PSD) from theoretical perspective, taking the effects of particle nonsphericity and orientation into account. Preliminary analysis of input parameters sensitivity of the analytical retrieval formulas of the different PSDs, it is found that there exist simple scale transformation relations between the retrieved and the true PSD for spheroids and triangular prisms if inappropriate shape and orientation assumption are made, but scale transformation relation is invalid for cubes, because the particle modes occur in retrieval procedure.


Key words: Particle size distribution, extinction spectrum, inversion, atmospheric particles.