10th International Aerosol Conference
September 2 - September 7, 2018
America's Center Convention Complex
St. Louis, Missouri, USA

Abstract View

Single Particle Measurements from Winter Fog Events in the Indo-Gangetic Plain

MICHAEL GIORDANO, Benjamin Werden, Khadak Mahata, Narayan Babu Dhital, Nita Khanal, Amit Bhujel, Sagar Adhikari, Siva Praveen Puppala, Arnico Panday, Peter DeCarlo, Drexel University

Abstract Number: 1540
Working Group: Aerosols in Earth System

Abstract
In the Indo-Gangetic Plain (Northern India and Southern Nepal), intense fog events have been observed during winter months. The overall composition of the fog and aerosol particles before, during, and after these events plays a crucial role in the potential heterogeneous and aqueous-phase reactions occurring over the region. These reactions can have major implications for the lifetime, transport, and human-health impacts of these intense fog events but overall composition of these particles remains unclear. This presentation focuses on single particle composition data of submicron particles obtained from a mini Aerosol Mass Spectrometer (AMS) during the NAMASTE2 campaign deployment to Lumbini, Nepal. Bulk AMS data shows a organic species dominate the mass with significant enhancements in aerosol chloride exceeding sulfate during fog events. Single particle analysis from AMS measurements, including k-means cluster analysis, is presented here to interpret mixing state of the submicron aerosol mass population.