Why Observe Trees?

The Trees Tool in the NASA GLOBE Observer (NASA GO) app allows citizen scientist observers to use their mobile devices to take tree height and tree circumference measurements all over the globe.

Why is NASA sponsoring this work?

The Trees observation allows citizen scientists to measure tree height for as many trees as the observer wants. You can track the growth of trees over time and even take observations at the same time the NASA Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) and the Global Ecosystem Dynamics Investigation (GEDI) instrument onboard the International Space Station are taking measurements of tree height from space. During your observation of tree height, you can also measure the tree circumference. Tree height is the most widely used indicator of an ecosystem’s ability to grow trees. Observing tree height allows NASA scientists to understand the gain or loss of biomass which can inform calculations of the carbon that trees and forests either take in from or release into the atmosphere.

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