Community Radiative Transfer Model for Scattering Transfer and Applications

The community radiative transfer model (CRTM), developed at U. S. Joint center for satellite data assimilation (JCSDA), has been used for infrared and microwave satellite radiance simulations and their derivatives to the surface/atmospheric parameters in the physical retrieval, data assimilation, and many others. CRTM has been become a key component in U. S. data assimilation for weather forecasting at the national center for environmental prediction (NCEP). This paper presents a new extension of the CRTM to ultraviolet (UV) and visible radiation for ozone and aerosol applications. This paper also demonstrates scattering effects on microwave radiative transfer.