ASSESSMENT OF THE DDA ALGORITHM FOR COMPUTING THE BACKSCATTERING FROM OBLATE WITH EXPERIMENTAL OBSERVATIONS

摘要

Backscattering cross-sections of a series of water and ice oblates have been observed with lab facilities and computed with the discrete-dipole approximation (DDA) algorithm. A comparison of the observed and calculated results is made and, as expected they are in quite good agreement with each other even though differences exist. The consistence between the results from the lab experiments and computations shows that the DDA software in hand can be used in research on scattering characteristics of oblate hydrometeors which are typical in cloud and rainfall.