AAAR 34th Annual Conference
October 12 - October 16, 2015
Hyatt Regency
Minneapolis, Minnesota, USA
Abstract View
Characterization of Fresh and Aged Emissions from a Marine Vessel Fueled with Diesel and Biodiesel
DEREK PRICE, Kevin Sanchez, Jun Liu, Raghu Betha, Lynn Russell, David R. Cocker III, J. Wayne Miller, Scripps Institution of Oceanography
Abstract Number: 733 Working Group: Carbonaceous Aerosols in the Atmosphere
Abstract Emissions from ocean going vessels are a significant contributor to atmospheric aerosol pollution. Large shipping ports, such as the LA and San Diego ports, are major pollution sources for their respective cities. Additionally, ship exhaust has the ability to influence cloud formation, creating “shipping trails” that can be observed in satellite images. As alternative shipping fuels are being investigated, it is important to understand the effects these fuels will have on atmospheric chemistry. This study investigates the fresh and aged emissions from a marine vessel operated under two different fuels, diesel and biodiesel. Engine emissions were measured directly from the exhaust stack and indirectly through the inlet of an ambient sampling trailer. A suite of instruments were utilized to measure both the gas and particle-phase components. The concentrations of NO$_x, CO, CO$_2, SO$_2, and H$_2O were measured by a NO$_x analyzer, a CO analyzer, a PG-250 five gas analyzer, and a Licor CO$_2/H$_2O analyzer. Total particle concentration and size distribution were measured by a scanning electrical mobility spectrometer (SEMS), an aerosol particle sizer (APS), and an optical particle sizer (OPS). The black carbon concentration and size distribution was measured by a single particle soot photometer (SP2) and an aethalometer. The chemical composition of the non-refractory components of the particle-phase was measured by a high resolution – time of flight – aerosol mass spectrometer (HR-ToF-AMS). Particles were also collected on quartz and Teflon filters for mass loading and offline EC/OC and FTIR analysis.