This is a justification for other than full and open competition under FAR 6.301(b). The requirement is to maintain an essential engineering, research, or development capability provided by UCAR. UCAR manages the National Center for Atmospheric Research (NCAR), a Federally Funded Research and Development Center on behalf of the National Science Foundation. The resulting IDIQ is expected to be used by OAR, the National Weather Service, the Office of Marine and Aviation Operations, and NESDIS. No specific timeline, budget amount, or performance location is provided in this notice.