Suresh Dhaniyala

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Large particles containing nitric acid (HNO3) were observed in the 1999/2000 Arctic winter stratosphere. These in situ observations were made over a large altitude range (16 to 21 kilometers) and horizontal extent (1800 kilometers) on several airborne sampling flights during a period of several weeks. With diameters of 10 to 20 micrometers, these(More)
[1] Large (>2 mm diameter) HNO 3-containing polar stratospheric cloud (PSC) particles were measured in situ by the NOAA NO y instrument on board the NASA ER-2 aircraft during seven flights in the 1999/2000 Arctic winter vortex. Here we discuss the detection of these large PSC particles, their spatial distribution, the ambient conditions under which they(More)
Aircraft-based aerosol sampling in clouds is complicated by the generation of shatter artifact particles from aerodynamic or im-paction breakup of cloud droplets and ice particles in and around the aerosol inlet. Aerodynamic breakup occurs when the Weber number of a droplet, which primarily depends on the droplet size and the magnitude of the relative(More)
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