This study analyzed in situ particle size distributions measured with aircraft instrumentation for different cloud regimes premonsoon (PRE), transition (TRA), and monsoon (MON) observed during Cloud Aerosol Interaction and Precipitation Enhancement Experiment (CAIPEEX) in India. Overall the MON cases had much higher values of total ice particle number concentrations from cloud imaging probe and ice water content than PRE which indicated that there are substantial differences in ice production and growth processes between these clouds. The empirical and analytical relationships between different parameters of the particle size distribution (PSD) to describe microphysical properties were developed and compared with previous observations. Read more... (Patade S., Prabha T.V., Axisa D., Gayatri K., Heymsfield A., Journal of Geophysical Research , October 2015)

This experimental study presents the distortion, frequency and amplitude of oscillations of water drops by suspending them in a vertical wind tunnel in the presence and absence of horizontal electric fields using a high speed camera at 1000 frames/sec. It demonstrates the pronounced drop distortion with increase in horizontal electric field resulting in its instability at 6.6 mm. Although, there is no significant change in oscillation frequency, the amplitude of oscillation is reduced with electric field ≤ 500 kV m-1. The possible effects of electrical forces on shape parameters and their implications on cloud microphysics and in radar meteorology are discussed. Read more... (Bhalwankar R., Deshpande C.G. and Kamra A.K., J. of Atm. & Solar-Terrestrial Phy., Sept. 2015)

The present study examines the ability of high resolution (T382) National Centers for Environmental Prediction coupled atmosphere-ocean climate forecast system version 2 (CFS T382) in simulating the salient spatio-temporal characteristics of the boreal summertime mean climate and the intraseasonal variability. Based on analysis of CCEWs, the study further explains the possible reasons behind the realistic simulation of northward propagating BSISO in CFS T382, even though the model shows substantial biases in simulating mean state and otherBSISO modes. Read more... (Abhik S., Mukhopadhyay P., R.P.M. Krishna, Salunke K.D., Dhakate A.R., Suryachandra A. Rao, Climate Dynamics, Online, August 2015)