Tag : NASA

    NASA Finds Novel Ways To Track Climate Change

    April7/ 2022

    Washington: Using two space-based studies, NASA has been observing climate change and groundwater loss across the planet. Its Global Ecosystem Dynamics Investigation (GEDI) mission, ecosystem and climate researchers can quickly locate their regions of interest and study forest structure and carbon content with greater precision than in the past. GEDI is a high-resolution lidar instrument designed specifically to measure vegetation from the International Space Station (ISS). It rapidly bounces laser pulses off the trees and shrubs below to create detailed 3D maps of forests and land formations. With its newest data product, GEDI mission provides the first near-global estimate of aboveground forest biomass and the carbon it stores - filling a key gap in climate research. The data enables research into how Earth's forests are changing, what role they play in mitigating climate change, and the regional and global impacts of planting and cutting down trees. Over the past three years, GEDI has taken billions of laser measurements of vegetation around the globe. That data has been combined with airborne and ground-based lidar surveys to create detailed 3D biomass maps that indicate the total amount of vegetation in a one-square-kilometre area. With those maps, researchers will be able to better estimate the amount of carbon that is stored in forests. "Resolving the structure of different forest and woodland ecosystems with much more certainty will benefit not only carbon stock estimation, but also our understanding of their ecological condition and the impact of different land management practices," said John Armston, GEDI's lead for validation and calibration and an associate research professor at the University of Maryland, in a state ...

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