**GAO-08-518**                      Published: May 16, 2008. Publicly Released: Jun 19, 2008.                  

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## Highlights

The National Polar-orbiting Operational Environmental Satellite System (NPOESS) is a triagency acquisition--managed by the Department of Commerce's National Oceanic and Atmospheric Administration (NOAA), the Department of Defense (DOD), and the National Aeronautics and Space Administration (NASA)--that has experienced escalating costs, schedule delays, and technical difficulties. These factors led to a June 2006 decision to restructure the program by reducing the number of satellites and sensors, increasing estimated costs to $12.5 billion, and delaying the first two satellites by 3 to 5 years. Among other objectives, GAO was asked to evaluate progress in restructuring the acquisition, assess the status of key program components and risks, and assess NASA's, NOAA's, and DOD's plans for obtaining the data originally planned to be collected by NPOESS sensors, but eliminated by the restructuring. To do so, GAO analyzed program and contractor data, attended program reviews, and interviewed agency officials.

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## Topics

Space

ClimateContract negotiationsCost analysisCost controlCost overrunsData collectionEarth resources satellitesEarth sciences data systemsEnvironmental monitoringInteragency relationsOperational testingProcurement planningProgram evaluationProgram managementRisk assessmentRisk managementSatellitesSchedule slippagesSystem vulnerabilitiesSystems conversionsSystems integrationSystems testingTechnologyWeather forecasting