|The graph on the right shows the amount of longwave radiation
that is emitted to space. An important atmospheric
window exists from 8 to 13 micrometers.
Energy emitted through this window accounts for almost half of longwave radiation emitted to space. CO2 and H2O absorbs radiation at wavelengths longer than the atmospheric window while ozone and methane absorb at wavelengths shorter than the window.
Within the window, some absorption occurs as well (due to CO2 and ozone) but the total absorption is weak in most regions of the globe.
Other important absorbers include CH4, N2O and CFC's.
back to PJW Class home