WMO 2026 Report Flags Record Planetary Energy Imbalance and Ocean Heat

The WMO’s choice to spotlight energy imbalance echoes Charles Keeling’s 1958 CO₂ curve: a single metric that transformed a scientific suspicion into a blunt radiative budget. A comparable perturbation—though brief—was the 1997-98 El Niño spike; yet today’s imbalance is enduring, not episodic. It signals a structural shift in the Earth system akin to the Industrial Revolution’s re-wiring of the carbon cycle in the late 18th century. By trapping heat faster than it can escape, society has taken out a thermodynamic mortgage: deep-ocean warming, ice-sheet loss, and sea-level rise are now ‘locked in’ regardless of near-term emission cuts. On a 100-year horizon this moment may be remembered less for the precise 1.43 °C figure than for crossing a threshold where climate change moved from potentially reversible to a multi-century legacy baked into the planet’s heat engine.