Affiliations: Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, CO, USA
Note: [] Corresponding author: M. Thurai, Department of ECE, Colorado State University, Fort Collins, CO, USA. E-mail: merhala@engr.colostate.edu
Abstract: Two events with contrasting drop fall velocity versus drop shape characteristics are discussed. The events were captured by two collocated 2D video disdrometers, as well as a C-band polarimetric radar, 15 km away. Contoured images of the drops as well as their fall velocities from the disdrometer measurements, together with the analysis of simultaneously recorded radar observations, point towards the possibility of mixed mode drop oscillations (including the horizontal mode) occurring for the second event. The first event – which occurred 7 days prior - did not show any unusual characteristics, and represents the majority of the recorded events. Results are presented and discussed.
Keywords: Earth-space propagation, rain drop shapes, drop oscillation modes, asymmetric drop oscillations
