Quantifying tree mortality in a mixed species woodland using multitemporal high spatial resolution satellite imagery

► Drought resulted in widespread tree mortality in southwestern US woodlands. ► High spatial resolution imagery was acquired pre- and post-mortality. ► Unsupervised clustering of ΔNDVI and ΔRGI produced high classification accuracy. ► Spatiotemporal dynamics were assessed with classified mortality maps. ► Tree mortality occurred in all vegetation cover types.