Richardson is PI of the PhenoCam network, a continental-scale phenological observatory that uses digital camera imagery to track, in near real time, the phenology of diverse ecosystems across North America. In collaboration with David Hollinger (USDA Forest Service), Richardson has been jointly responsible for running the AmeriFlux tower at the Bartlett Experimental Forest (New Hampshire) since 2004. Richardson is also actively involved in research projects at the Howland Forest, Maine; the Niwot Ridge AmeriFlux site in Colorado; the SPRUCE facility in northern Minnesota; and the Harvard Forest, Massachusetts. Richardson has been identified as a Highly Cited Researcher in both Environment/Ecology and Agricultural Sciences.