• It is essential that the process of incorporating research requirements into NPOESS be started now and be allowed to influence the program development and risk reduction phase that is in progress, without disrupting the primary NPOESS mission. Opportunities for change after the launch are limited by the longer satellite life and longer time between launches.

REFERENCES

Integrated Program Office (IPO), National Polar-orbiting Operational Environmental Satellite System (NPOESS). 1996. Integrated Operational Requirements Document (First Version) (IORD-1) 1996. Issued by Office of Primary Responsibility: Joint Agency Requirements Group (JARG) Administrators, March 28. The updated IORD and other documents related to NPOESS are available online at < http://npoesslib.ipo.noaa.gov/ElectLib.htm.>

National Research Council (NRC). 1998. Overview, Global Environmental Change: Research Pathways for the Next Decade. National Academy Press, Washington, D.C.

National Research Council (NRC), Space Studies Board, Committee on Earth Studies. 2000. Issues in the Integration of Research and Operational Satellite Systems for Climate Research: I. Science and Design. National Academy Press, Washington, D.C.



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