My research is interdisciplinary and combines elements of marine optics, remote sensing, organic geochemistry and photochemistry to promote a better quantitative understanding of various types of interactions between terrestrial and marine environments and their perturbations by climate change and human activities. It typically involves a combination of field work, laboratory-based analyses and experiments, remote sensing data and image analysis, and modeling. Research topics of particular interest include: Environmental and biogeochemical change in the Arctic Ocean Climate- and human-driven changes in estuarine/coastal biogeochemistry and water quality Remote sensing of aquatic biogeochemical properties and water quality Impacts of UV radiation and photochemical processes on biogeochemical cycles Fate of land-derived carbon in the ocean and impacts on marine biogeochemistry Fate of contaminants in aquatic environments