AAAR 37th Annual Conference October 14 - October 18, 2019 Oregon Convention Center Portland, Oregon, USA
Abstract View
Spray Aerosol Production from Raindrop Impaction on Seawater and Soil Surfaces
Kaili Zhou, Shurong Wang, Xin Yang, XIAOFEI WANG, Fudan University
Abstract Number: 456 Working Group: Aerosol Physics
Abstract Spray aerosol is a major source of atmospheric aerosols, which play crucial roles in radiative forcing, cloud formation and human health. In the atmosphere, spray aerosols are mainly produced from bubble bursting. Most of bubbles in natural water are generated via wave breaking which is induced by wind. However, it is known that bubbles are also formed by impaction of raindrop on water surface. Spray aerosol can be produced from bursting of these bubbles. According to our knowledge, no study has reported the production flux of spray aerosol from impaction of raindrop on water surface. In addition, several recent studies have shown that raindrop impaction on soil can also produce spray aerosols. Thus, it is crucial to access the contribution of spray aerosol from raindrop impact on seawater or soil. In this study, we simulated raindrop impaction on seawater and soil surface in the laboratory. The production rate, as well as physical and chemical properties, of spray aerosols were measured and characterized in details. Their environmental impact was discussed.