Earth  ID: 13114

GEDI Overview

The Global Ecosystem Dynamics Investigation, or GEDI, uses advanced laser technology to reveal the makeup of remote forest ecosystems around the globe. Its measurements of the height of leaves, branches, trees, and shrubs below its path will help scientists map the structure of forests and better understand how ecosystems are storing or releasing carbon.

GEDI's lidar instrument sends laser pulses down to Earth, where they penetrate the globe’s temperate and tropical forests. The laser beams ricochet off the first thing they hit, which can be a leaf atop a dense canopy, a protruding branch, or the ground from which the forest emerges. The energy returned to the GEDI telescope on the International Space Station will provide and intricate three-dimensional map of forest canopies.

"We can send out a little pulse of light and it travels down, reflects off the surface, and comes back," Bryan Blair, GEDI instrument scientist and deputy principal investigator, said. "We can see and measure how tall the tree is and we can actually see how dense it is as we go down."

Source Material



Matthew R. Radcliff (USRA): Lead Producer
Aaron E. Lepsch (ADNET Systems Inc.): Technical Support
Rob Andreoli (AIMM): Videographer
John Caldwell (AIMM): Videographer
Ralph Dubayah (University of Maryland): Scientist
Bryan Blair (NASA/GSFC): Scientist
Ralph Dubayah (University of Maryland): Interviewee
Bryan Blair (NASA/GSFC): Interviewee
Lisa Poje (Freelance): Animator
Walt Feimer (KBRwyle): Animator
Please give credit for this item to:
NASA's Goddard Space Flight Center

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This item is part of these series:
Narrated Movies
International Space Station

SVS >> Biomass
SVS >> Canopy
SVS >> Carbon Absorption
SVS >> Carbon Cycle
SVS >> Biosphere >> Forestry
NASA Science >> Earth