Terrestrial Sciences Staff Research
Natural and human changes in land cover and ecosystem functions and their effects on climate, water resources, and biogeochemistry. Development and use of climate, hydrological, and ecological models.
Land surface processes and climate change with a particular emphasis on research into Arctic terrestrial climate system feedbacks, including the impact of permafrost degradation on carbon, water, and energy cycles.; land-atmosphere interactions and how land-atmosphere interactions contribute to climate variability and change.
Investigate how the biosphere, land surface hydrology, and human modified landscapes interact with the climate system, to impact regional and global climate.
My research focuses on how terrestrial ecosystems are changing in response to human activities and the impact that these changes have on climate. Recent work includes investigating ecosystem responses to climate and pollution, the impacts of land management decisions, and uncertainty in global ecosystem responses to change. I currently serve as the co-chair for the CSTM-Agriculture Working Group.
Representation of land surface processes within climate models and research on land-atmosphere interactions with an emphasis on urban areas.
My work utilizes dynamic ecological modeling to examine changes in vegetation structure and composition over time and the impacts of different vegetation states on and interactions with disturbances, climate, carbon storage, and ecosystem services. I specialize in the use and development of ecological models that include dynamic size-structured vegetation, competition and disturbance.
Terrestrial water cycle, and especially human impacts on the water cycle, at spatial scales of river basins to regional and continental scales.
My work focuses on evaluating and improving the representation of global biogeochemical cycles in Earth system models by incorporating ecological theory and observations. I'm especially interested in soil biogeochemistry, carbon cycle variability, nutrient limitation, and terrestrial ecosystem responses to environmental change and anthropogenic activities. Currently, I am serving as the co-chair of the land model working group.