Scientists have observed an increase in carbon dioxide’s greenhouse effect at the Earth’s surface.
The researchers link this upward trend to rising CO levels from fossil fuel emissions.
Radiative forcing is a measure of how much the planet’s energy balance is altered by atmospheric changes.
Positive radiative forcing occurs when the Earth absorbs more energy from solar radiation than it emits as heat radiation back to space.
“We see, for the first time in the field, the amplification of the greenhouse effect because there’s more COin the atmosphere to absorb what the Earth emits in response to incoming solar radiation,” says Daniel Feldman.
Dr Feldman is a scientist in Berkeley Lab’s Earth Sciences Division and is lead author of the paper.