- UC Irvine scientists reported on February 2, 2026, that climate change is accelerating the breakdown of nitrous oxide (N2O), a potent greenhouse gas.
- This faster decay, observed over two decades of satellite data, introduces significant uncertainty into future climate projections, according to UC Irvine News.
- The atmospheric lifetime of N2O is decreasing by 1.4 percent per decade due to climate-driven stratospheric changes, researchers stated in PNAS.
- This critical, overlooked aspect of atmospheric chemistry necessitates reassessing current climate models and IPCC scenarios, as highlighted by co-author Michael Prather.
N2O Breakdown Accelerates, Climate Projections Uncertain
UC Irvine scientists have uncovered a surprising twist in climate change: it's actually accelerating the breakdown of nitrous oxide (N2O), a powerful greenhouse gas. This unexpected 1.4% per decade decrease in N2O's atmospheric lifetime, observed over two decades, introduces significant uncertainty into future climate projections and necessitates a reevaluation of current climate models.
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