Abstract
GNSS radio occultation profiles in the neutral atmosphere from inversion of excess phase data
Highlights
The concept of radio occultation (RO) was first applied in extraterrestrial satellite missions to study the composition of planetary atmospheres from measurements collected on-board Mariner, Pioneer and Voyager spacecraft (Kliore et al 1965; Fjeldbo et al 1971; Fjeldbo 1973; Lindal et al 1983)
The retrieval methodology from Global Navigation Satellite System (GNSS) radio occultation excess phase to atmospheric profiles of geophysical parameters implemented in the inversion software has been described and validated
The processing utilizes real-time products for FORMOSAT-3/COSMIC mission provided by COSMIC Data Analysis and Archive Center (CDAAC)/Taiwan Analysis Center for COSMIC (TACC)
Summary
The concept of radio occultation (RO) was first applied in extraterrestrial satellite missions to study the composition of planetary atmospheres from measurements collected on-board Mariner, Pioneer and Voyager spacecraft (Kliore et al 1965; Fjeldbo et al 1971; Fjeldbo 1973; Lindal et al 1983). National Space Organization (NSPO) in Taiwan establishes an independent center for processing FORMOSAT-7/COSMIC-2 data, Taiwan/TriG Radio Occultation Process System (TROPS), as a further development of the F-3/C retrieval algorithm (Chiu et al 2008), with contributions from Global Positioning System Science and Application Research Center (GPSARC) at National Central University (NCU) and the Taiwan Analysis Center for COSMIC (TACC) at Taiwan’s Central Weather Bureau (CWB). An implementation of the retrieval process for the inversion of radio occultation phase data is demonstrated for real-time profiling the neutral atmosphere. Inter-comparison studies for derived atmospheric profiles provide uncertainty estimates of RO parameters and concluding remarks follow to summarize the established development
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