Open AccessOn the relation between size and shape of desert dust aerosol
Author(s) -
Koren Ilan,
Ganor Eliezer,
Joseph Joachim H.
Publication year - 2001
Publication title -
journal of geophysical research: atmospheres
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.67
H-Index - 298
eISSN - 2156-2202
pISSN - 0148-0227
DOI - 10.1029/2000jd900558
Subject(s) - fractal dimension , aerosol , particle (ecology) , dust storm , thresholding , particle size , scanning electron microscope , perimeter , environmental science , fractal , remote sensing , mineralogy , image (mathematics) , physics , meteorology , geology , mathematics , geometry , optics , computer science , artificial intelligence , mathematical analysis , paleontology , oceanography
Mathematical image analysis techniques are implemented in a novel manner to analyze aerosol particles in scanning electron microscope (SEM) data. By evaluating and removing the variable background in a digital SEM image using dynamic thresholding and then calculating the area and perimeter of each particle, one can study the relationship between particle area and particle shape. It is possible to distinguish in this manner between at least two different particle populations, separated by their fractal dimension, in a set of samples collected during 1 day in a heavy dust storm in Israel.