The FengYun-3 radio occultation sounder GNOS: a review of the missions and early results
Presenter:
Weihua Bai
National Space Science Center, CAS
National Space Science Center, CAS
Talk
The GNSS occultation sounder (GNOS) is one of the new generation payloads onboard the Chinese FengYun 3 (FY-3) series of operational meteorological satellites for sounding the Earth’s neutral atmosphere and ionosphere. The FY-3C/-3D GNOS, launched in September 2013 and November 2017 respectively, were designed for acquiring radio occultation (RO) data with GNSS signals from both the Chinese BeiDou System (BDS) and U.S. Global Positioning System (GPS). This paper reviews the FY-3 GNOS instrument, RO data processing, data quality evaluation, and research applications. The reviewed data validation and application results demonstrate that the FY-3 GNOS missions can provide accurate and precise atmospheric and ionospheric GNSS RO profiles for numerical weather prediction (NWP), global climate monitoring (GCM) and space weather research (SWR). The performance of the FY-3 GNOS product establishes confidence that the GNOS data from the series of FY-3 satellites will provide important contributions to SWP, GCM and SWR scientific communities.
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