My research spans oceanography, climate and biogeochemistry, with an emphasis on numerical models, remote sensing, and data analysis. I am interested in how the global carbon cycle and ocean ecology respond to natural and human-driven climate change signals such as ocean warming, sea-ice loss, and ocean acidification due to the invasion of carbon dioxide from fossil fuel burning.


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Prior to retirement in May 2018, my primary teaching interests were physical geology, landscape evolution, petrology, economic ore deposits, and environmental geology. I am also interested in the geology of Virginia and the tectonic evolution of the state and mid-Atlantic region, as well as the geology and ecology of US National Parks.


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