Absorption, emission, and scattering of radiation within the atmosphere are critical processes that impact our planet’s climate and allow the remote sensing of key atmospheric properties. Atmospheric and Environmental Research (AER) is internationally recognized as the premier global authority on these processes and their effects. The rapid radiative transfer model (RRTM) is a validated, correlated k-distribution band model for the calculation of longwave and shortwave atmospheric radiative fluxes and heating rates.