A major experiment named the Cloud Aerosol Interaction and Precipitation Enhancement Experiment (CAIPEEX) is underway in India [conducted by the Indian Institute of Tropical Meteorology (IITM)] as an attempt to identify and understand the pathways through which aerosols may influence precipitation. Observations of convective clouds, aerosol, and cloud condensation nuclei (CCN) at several locations were carried out during this experiment with an instrumented aircraft during May–September 2009. Thus, clouds during premonsoon, transition-to-monsoon, and active monsoon situations were sampled at various locations. In situ measurements were performed in clouds at heights up to 7 km above the surface.

- THARA V. PRABHA, A. KHAIN, R. S. MAHESHKUMAR, G. PANDITHURAI, J. R. KULKARNI, M. KONWAR, AND B. N. GOSWAMI