Find a tall stick. That and one good eye are all the tools you’ll need. With the stick in hand, walk exactly 11 paces from the base of the tree and mark the spot by driving the stick into the ...

From that, scientists can directly calculate how much carbon has been absorbed. To measure tree height around the globe, Lefsky used lidar data from a satellite orbiting 600 kilometers above Earth.

You can follow the steps to estimate the carbon dioxide stored in trees in your yard with a tree’s diameter, height, and a few easy math steps.

For Sophie’s tree that means 110cm 3.14 = 35cm diameter. To calculate the TPZ, multiply the diameter by 12; for Sophie’s tree that is 35 x 12 = 420cm or 4.2m.

1 A height-light trajectory (HLT, a fitted curve relating canopy exposure to tree height) was determined for populations of individuals of each of 47 tree species in a Liberian lowland rainforest. The ...