The restructuring of the NASA Earth Observing System (EOS), designed to provide comprehensive long term observations from space of changes occurring on the Earth from natural and human causes in order to have a sound scientific basis for policy decisions on protection of the future, is reported. In response to several factors, the original program approved in the fiscal year 1991 budget was restructured and somewhat reduced in scope. The resulting program uses three different sized launch vehicles to put six different spacecraft in orbit in the first phase, followed by two replacement launches for each of five of the six satellites to maintain a long term observing capability to meet the needs of global climate change research and other science objectives. The EOS system, including the space observatories, the data and information system, and the interdisciplinary global change research effort, are approved and proceeding. Elements of EOS are already in place, such as the research investigations and initial data system capabilities. The flights of precursor satellite and Shuttle missions, the ongoing data analysis, and the evolutionary enhancements to the integrated Earth science data management capabilities are all important building blocks to the full EOS program.


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    Earth observing system implementation

    DONOHOE, M. / WALTON, B. / VANE, D. | AIAA | 1985


    Earth Observing System overview

    Walton, Barbara A. | NTRS | 1993


    The Earth Observing System

    Shaffer, Lisa Robock | NTRS | 1992


    Earth observing system implementation

    Donohoe, M. J. / Walton, B. A. / Vane, D. | NTRS | 1985