Date of Award

Spring 2009

Project Type


Program or Major

Earth Sciences

Degree Name

Master of Science

First Advisor

Robert J Griffin


Air quality of New England reflects air quality of the eastern United States and Canada because of transport from these areas to New England. Particle number (PN) concentration, size distribution, and composition were observed in the winter/spring period at a rural New England site (Thompson Farm). Thirteen PN events identified on the basis of increased PN above the site average were investigated, with the majority of events originating from clean northwestern air masses. Steady particle growth rates were observed for events ranging between 0.9 and 5.5 nm.

The organic composition of bulk aerosols were also investigated over a year (August 2007 to August 2008), through measurements of organic carbon, elemental carbon, and water-soluble organic carbon (WSOC) from 24-hour samples. Annual means and seasonal trends are reported. 1H-NMR showed little variation among functional groups present in WSOC on a seasonal basis but showed significant variation on a daily basis.