Study narrows range of Earth's warming response as greenhouse gases rise

New research has sharply narrowed the likely estimate of how much the Earth will warm with a doubling of carbon dioxide in the atmosphere, potentially honing estimates that have stood for a quarter century.

Estimating how much the planet will warm as we lift
greenhouse gas levels has been an active area of research.

The long-standing estimate for the so-called equilibrium climate sensitivity used by the Intergovernmental Panel on Climate Change had been that surface temperatures would rise between 1.5 and 4.5 degrees for each doubling of CO2 or equivalent greenhouse gases.

Read Peter Hannam’s story in today’s Melbourne Age - “Study narrows range of Earth's warming response as greenhouse gases rise.”