REPLY - VALIDITY OF ANOMALOUS DIFFRACTION APPROXIMATION IN M-CHI DOMAIN

In a recent paper, Liu et al. [Liu, C., Jonas, P.R., Saunders, C.P.R., 1996. Accuracy of the anomalous diffraction approximation to the ligh t scattering by column-like ice crystals. Atmos. Res. 41, 63-69] repor ted that the anomalous diffraction approximation (ADA) accuracy is not sensitive to van de Hulst's condition \m-1\<<1, but is dependent on t he size parameter chi. Videen and Chylek [Videen, G., Chylek, P., 1998 . Anomalous diffraction approximation limits. Atmos. Res., this issue] pointed out that this result is at odds with previous research, and t heir results indicated that the accuracy of ADA is much dependent on t he condition of \m-1\ << 1. Some calculated results are presented here to provide further discussion of the ADA validity in the calculation of particle extinction and absorption efficiencies. (C) 1998 Elsevier Science B.V. All rights reserved.