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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union
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Volume 11, issue 10 | Copyright
Atmos. Meas. Tech., 11, 5797-5811, 2018
https://doi.org/10.5194/amt-11-5797-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Review article 23 Oct 2018

Review article | 23 Oct 2018

The FengYun-3C radio occultation sounder GNOS: a review of the mission and its early results and science applications

Yueqiang Sun1,2,3, Weihua Bai1,2,3, Congliang Liu1,2, Yan Liu4, Qifei Du1,2,3, Xianyi Wang1,2, Guanglin Yang5, Mi Liao5, Zhongdong Yang5, Xiaoxin Zhang5, Xiangguang Meng1,2, Danyang Zhao1,2, Junming Xia1,2, Yuerong Cai1,2, and Gottfried Kirchengast6,2,1 Yueqiang Sun et al.
  • 1Beijing Key Laboratory of Space Environment Exploration, National Space Science Center, Chinese Academy of Sciences (NSSC/CAS), Beijing, China
  • 2Joint Laboratory on Occultations for Atmosphere and Climate (JLOAC) of NSSC/CAS, Beijing, China, and University of Graz, Graz, Austria
  • 3School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing, China
  • 4National Meteorological Center, Chinese Meteorological Administration, Beijing, China
  • 5National Satellite Meteorological Center, Chinese Meteorological Administration, Beijing, China
  • 6Wegener Center for Climate and Global Change (WEGC) and Institute for Geophysics, Astrophysics, and Meteorology/Institute of Physics, University of Graz, Graz, Austria

Abstract. The Global Navigation Satellite System (GNSS) Occultation Sounder (GNOS) is one of the new-generation payloads on board the Chinese FengYun 3 (FY-3) series of operational meteorological satellites for sounding the Earth's neutral atmosphere and ionosphere. FY-3C GNOS, on board the FY-3 series C satellite launched in September 2013, was designed to acquire setting and rising radio occultation (RO) data by using GNSS signals from both the Chinese BeiDou Navigation Satellite System (BDS) and the US Global Positioning System (GPS). So far, the GNOS measurements and atmospheric and ionospheric data products have been validated and evaluated and then been used for atmosphere- and ionosphere-related scientific applications.

This paper reviews the FY-3C GNOS instrument, RO data processing, data quality evaluation, and preliminary research applications according to the state-of-the-art status of the FY-3C GNOS mission and related publications. The reviewed data validation and application results demonstrate that the FY-3C GNOS mission can provide accurate and precise atmospheric and ionospheric GNSS (i.e., GPS and BDS) RO profiles for numerical weather prediction (NWP), global climate monitoring (GCM), and space weather research (SWR). The performance of the FY-3C GNOS product quality evaluation and scientific applications establishes confidence that the GNOS data from the series of FY-3 satellites will provide important contributions to NWP, GCM, and SWR scientific communities.

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The GNSS Occultation Sounder (GNOS) is one of the new-generation payloads on board the Chinese FengYun 3 (FY-3) series of operational meteorological satellites for sounding the Earth’s neutral atmosphere and ionosphere. FY-3C GNOS, on board the FY-3 series C satellite launched in September 2013, was designed to acquire setting and rising radio occultation (RO) data by using GNSS signals from both the Chinese BDS and the US GPS. This paper reviews the FY-3C GNOS mission.
The GNSS Occultation Sounder (GNOS) is one of the new-generation payloads on board the Chinese...
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