Tropical forests stop absorbing carbon dioxide during El Niño events. This year could be the worst.
El Niño transforms tropical forests from carbon sinks to sources. 2026 could be the worst year yet.
El Niño transforms tropical forests from carbon sinks to sources. 2026 could be the worst year yet. This report comes from Live Science. The story ce
Read Full Story at Live Science →Why This Matters
The shift of tropical forests from carbon sinks to sources during El Niño events isn’t just an ecological footnote—it’s a stark reminder that Earth’s climate systems are increasingly operating in uncharted territory. As these forests, which have long buffered humanity’s excess carbon emissions, begin to falter under stress, the feedback loop could accelerate global warming beyond current projections. The implications extend beyond climate science, threatening food security, biodiversity, and the livelihoods of millions who depend on intact forests.
Background Context
Tropical forests have absorbed nearly a third of human-caused carbon dioxide emissions since the Industrial Revolution, acting as critical regulators of the planet’s climate. But their resilience is waning: studies show that during past El Niño events—like the devastating 2015-2016 episode—these forests released more carbon than they absorbed due to droughts, wildfires, and tree die-offs. This year, with El Niño strengthening and global temperatures already at record highs, the risk of a catastrophic carbon pulse is greater than ever.
What Happens Next
If this year’s El Niño triggers a major carbon release from tropical forests, we may see a temporary spike in atmospheric CO₂ concentrations, making it harder to meet global climate targets. Policymakers will face pressure to prioritize forest protection and restoration, while scientists will race to refine models predicting the timing and scale of these events. The question is no longer whether these forests will falter, but how soon—and whether interventions can mitigate the damage.
Bigger Picture
This pattern aligns with a troubling global trend: as climate extremes intensify, even Earth’s most resilient ecosystems are reaching tipping points. The tropical forest carbon reversal underscores a broader reality—climate change is now self-reinforcing, where warming begets more warming. Without drastic emissions cuts and proactive conservation, these cycles could become the new normal, reshaping the planet’s climate system for decades to come.
