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The outcomes of the 19th Committee on Earth Observing Satellites (CEOS) Plenary held in London in
November 2005, recognized that the CEOS Implementation Plan for Space-Based Observations for
Global Earth Observation System of Systems (GEOSS) should:
- identify the supply of space-based observations required to satisfy the requirements expressed by
the 10-year implementation plan for GEOSS; and
- propose an innovative process whereby the many disparate types of Earth observing programs
funded by CEOS Member agencies might contribute to the supply of the required observations.
The CEOS Task Force charged with drafting the CEOS Implementation Plan for Space-Based Observations
for GEOSS focused its early efforts on the creation of a 'new planning process' which would satisfy the
various criteria demanded by member space agencies, and which would hopefully encourage a new phase
of specificity and focus in the multi-lateral co-operation efforts undertaken by space agencies under the
CEOS umbrella - resulting in improved engagement of all CEOS Members and real implementation
results. The CEOS Constellations is the title given to this new process, and four pilot studies have been
initiated in order to pioneer and test the concept. The Japan Aerospace Exploration Agency (JAXA) and
the National Aeronautics and Space Administration (NASA) were selected as the lead agencies for the
study of the development of a CEOS Precipitation Constellation with the support of other CEOS space
agency and user community participants. The goals, approach, and anticipated outcomes for the study will
be discussed.
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Steven P. Neeck, Riko Oki, "CEOS precipitation constellation," Proc. SPIE 6744, Sensors, Systems, and Next-Generation Satellites XI, 674428 (17 October 2007); https://doi.org/10.1117/12.746142