An update on the NAST-I airborne FTS
2011
The NPOESS / NASA Airborne Sounder Testbed - Interferometer (NAST-I) is a well-proven airborne remote sensing
system, which has flown in 18 previous field campaigns aboard the high altitude NASA ER-2, Northrop Grumman /
Scaled Composites Proteus, and NASA WB-57 aircraft since initially being flight qualified in 1998. While originally
developed to provide experimental observations needed to finalize specifications and test proposed designs and data
processing algorithms for the Cross-track Infrared Sounder (CrIS) to fly on the National Polar-orbiting Operational
Environmental Satellite System (NPOESS) Preparatory Project (NPP) and the Joint Polar Satellite System, JPSS
(formerly NPOESS, prior to recent program restructuring), its unprecedented data quality and system characteristics
have contributed to a variety of atmospheric research and measurement validation objectives. This paper will provide a
program overview and update, including a summary of measurement system capabilities, select scientific results, and
recent refurbishment activities.
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