Senior Ecologist at Grassroots Carbon Public Benefit LLC
I am an ecosystem ecologist who studies carbon, water and energy exchange between plants, soils and the atmosphere. My work integrates biogeochemistry, biometeorology and ecophysiology, and spans leaf to global spatial scales. A central theme and focus is on emergent properties of biogeophysical systems that regulate the cycling of carbon, water and energy. Understanding these emergent relations simplifies and enables robust parameterization of remote sensing algorithms and land surface models needed to monitor and predict spatial and temporal variation in ecosystem function.
After many years as a research scientist in ecology and agriculture I have taken on a new role as Senior Ecologist with Grassroots Carbon, a public benefit LLC focused on accelerating the adoption of regenerative land management practices that lead to improved ecosystem function and ultimately increased capture and storage of atmospheric CO2 as soil carbon. Prior to this I was a research scientist with Corteva Agriscience in Johnston, Iowa where I developed drone and satellite remote sensing technologies for plant phenotyping and agricultural decision support. Prior to Corteva, I was a post-doc at the University of California, Berkeley with Todd Dawson where I used stable isotopes to trace the flow of carbon and water through plants and soil and partition gross physiological rates of photosynthesis and transpiration from net CO2 and water fluxes measured by eddy covariance. During this time, I also developed the PT-JPL model for remote sensing of ET as a complement to my dissertation work on remote sensing of photosynthesis using optimality theory. Josh Fisher has championed its application and success over the years, establishing it as a leading method for remote sensing of ET, most notably as a core algorithm for the European Space Agency's WACMOS-ET, NASA's ECOSTRESS, and the mutli-agency OpenET projects. I completed my graduate work at the University of New Hampshire with Dave Hollinger on modeling and remote sensing of plant-soil-atmosphere CO2 exchange, where I contributed to the eddy flux measurements at Howland, Maine and as part of the early AmeriFlux QA/QC gold standard team.