Global Ecosystem Dynamics Investigation

Global Ecosystem Dynamics Investigation (GEDI, pronounced /ˈdʒɛdaɪ/) is a LiDAR altimeter mission by NASA to measure how deforestation has contributed to atmospheric CO₂ concentrations. A full-waveform LiDAR was attached to the International Space Station to provide the first global, high-resolution observations of forest vertical structure. This will allow scientists to map habitats and biomass, particularly in the tropics, providing detail on the Earth's carbon cycle. Although GEDI has been originally developed to monitor biomass and carbon cycle, other potentials have been also investigated such as inland water level monitoring and DSM generation.

The Principal Investigator is Ralph Dubayah, at the University of Maryland. The Deputy Principal Investigator & Instrument Scientist is J. Bryan Blair at NASA's Goddard Space Flight Center.