This project will be conducted in three phases. Analysis of wet-only and bulk deposition of major elements, nutrients and trace metals will be conducted in downtown Syracuse at the CoE and compared to a rural reference site. We will supplement these analyses by establishing five additional sites in the city of Syracuse to evaluate spatial variability in atmospheric deposition through measurements of bulk deposition and throughfall. We will also measure the quantity and chemistry of drainage from the CoE green roof and compare the results with current values of atmospheric deposition and historical measurements of the green roof to quantify its hydrologic and biogeochemical function and how it has changed since its installation. Finally, we will make flux measurements of carbon dioxide and methane from soil at the CoE and the five spatial sites in the City of Syracuse. This research will involve undergraduate training and research. Funding is also requested to present results at a professional meeting.

This project will be conducted in two phases. Diurnal and seasonal patterns in atmospheric mercury concentrations of the SyracuseCoE will be evaluated prior and after brownfield restoration. Analysis of atmospheric deposition of major elements, nutrients and trace metals will be conducted in downtown Syracuse and compared to a rural reference site.

This project will examine the recovery of surface waters to long-term decreases in atmospheric deposition. He is conducting a synthesis of long-term surface water chemistry trends from ~100 watershed sites from Tennessee to Maine to examine the extent and rate of recovery from acid deposition. Sites examined will include watersheds from the Adirondack and Catskill regions of New York, areas heavily impacted by acid deposition.