Quantifying Tree Loss in Sierra National Forest

Mass tree die-offs in California’s Sierra Nevada mountains are sparking worries of fire in the region.

This image originally appeared in the NASA Earth Observatory story Quantifying Tree Loss in Sierra National Forest.

NASA Earth Observatory maps by Joshua Stevens, using AVIRIS data courtesy of Zachary Tane, U.S. Forest Service. Caption by Pola Lem.

Published July 20, 2016
Data acquired 2013 - 2015