2015-2016 El Niño drought
The strongest El Niño on record dried the Amazon, causing widespread tree death and fire spread. It remains one of the highest-emission periods in the new study, grouped with 2010, 2023, and 2024 as climate-stressed years.
The forest released more carbon than it absorbed during the drought, setting a record at the time.
The event showed how climate stress and prior human degradation amplify fire-driven carbon losses.
The current study treats 2015-16 as a benchmark, showing that droughts once considered rare now combine with deforestation to push the forest into sustained net emissions.
