My research focuses on the influence of large-scale climate variability and change on local conditions of importance to society. Particular climate foci include: climate change, droughts, floods, and heat waves. Areas of interest include the Northeast US, North America, Southwest Asia, Middle East, and Africa.
I am interested in predicting and analyzing Nor'easters, snow squalls, tropical storms and hurricanes. My tools include ensemble modeling, large eddy simulations of the atmospheric boundary layer and forecast modeling.
My general area of research is geochemistry. Recent projects - characterizing the glass (Trintite) produced during the first atomic bomb test; petrology and geochemistry of Jurassic - Cretaceous magmatism in the northeastern US and Canada; petrology and geochemistry of the Chilwa Alkaline Province, Malawi; origin of the Franklin and Sterling Hill ore deposits; F and Cl in apatite, amphibole, and biotite; using tree-ring cores to map environmental change; and source and distribution of atmospheric pollutants.
I am a geochemist interested in how the Earth's continents form and evolve. I study igneous, sedimentary, and metamorphic rocks and use a variety of geochemical tools, such as major and trace element abundances, U-Th-Pb geochronology, radiogenic isotope tracers (Sr, Nd, Pb, Hf), and non-traditional stable isotope systems (Mo, Fe, U, Tl).
My research area is coastal groundwater dynamics and nutrient cycling in nearshore aquifers. I am interested in the influence of land-sea processes (tides, sea level rise, terrestrial recharge) on the exchange of water and chemicals between groundwater and surface water in estuarine, beach, bay, marsh, and marine environments. This work has direct implications for groundwater resources and water quality of coastal systems.
My current work focuses on developing and researching the learning impact of interactive simulations that enable people to explore, for themselves, the expected climate and energy impacts of decisions and policies. These simulations bring current climate change and energy science to students, citizens, and policymakers at all levels and have been shown to motivate science-informed action.
I am interested in the intersection of climate change and climate impacts. In my research I use process-based numerical models (i.e. climate models) to study how perturbations to the earth system influence weather and climate events. The insights from this work can be used to better understand the role of climate and weather in shaping societies and ecosystems in the past, and to prepare for climate-related impacts in the future.
My current research themes focus on the response of Antarctic ice sheets to late Cenozoic climate change, quantifying earth surface processes with rigorous field experiments and numerical modeling, and investigating the role of buried glacier ice in permafrost processes and their potential as climate archives.
As a terrestrial biogeochemist and global change ecologist, my research centers on understanding how plants regulate the movement of carbon, nutrients and water in terrestrial ecosystems under a variety of human perturbations. In particular I am interested in understanding the impacts of urbanization, deforestation, forest fragmentation, and climate change on ecosystem processes.