CIRC is in many respects the successor to the seminal ICRCCM (Intercomparison of Radiation Codes in Climate Models) effort that spanned the late 80's - early 00's. CIRC distinguishes itself from ICRCCM by its emphasis on using observations to build its catalog of cases.
About I3RC
The I3RC project was initiated by Robert Cahalan in the mid 1990s, with funding from the Department of Energy Atmospheric Radiation Measurement Program and the NASA Radiation Sciences Program, and with endorsements from International Radiation Commission and GEWEX Radiation Panel. Its goals include:
