Fig. 1.

a, b Satellite-derived standardized anomalies for dry season rainfall for the two most extensive droughts of the twenty-first century in Amazonia. c, d The difference in the 12-month (October to September) maximum climatological water deficit (MCWD) from the decadal mean (excluding 2005 and 2010), a measure of drought intensity that correlates with tree mortality. a, c The 2005 drought; b, d the 2010 drought. Reproduced from Lewis et al. (2011) with authorization from the corresponding author