Greenhouse Effect Simulator

Radiation balance, atmospheric absorption, and temperature forcing

CO2 (ppm)

420 ppm

CH4 (ppb)

1900 ppb

Water Vapor

50%

Albedo

0.30

Surface Temp

15.0 C

No-GHG Temp

-18 C

GHG Warming

+33 C

Radiative Forcing

0.0 W/m2

The greenhouse effect traps outgoing infrared radiation, warming Earth's surface. Without it, Earth would be -18C. Current GHG levels maintain ~15C average.