nbsp;The Column Radiation Model, or CRM, is a standalone version of the radiation model used in the NCAR Community Climate Model (CCM). The CRM is composed of the actual subroutines from the CCM which have been modified as little as possible in order to run in a standalone mode. The CRM is freely available (see below) and is a useful tool for scientific studies of the Earth's solar and infrared energy budgets, greenhouse gas and aerosol radiative forcing, and column closure experiments. We would like to begin assembling a list of references to papers which employed the CRM. Please send us your references!