Assessment of FY-3E GNOS-II GNSS-R Global Wind Product

Feixiong Huang; Junming Xia; Cong Yin; Xiaochun Zhai; Na Xu; Guanglin Yang; Weihua Bai; Yueqiang Sun; Qifei Du; Mi Liao; Xiuqing Hu; Peng Zhang; Lichang Duan; Yan Liu

doi:10.1109/JSTARS.2022.3205331

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing (Jan 2022)

Assessment of FY-3E GNOS-II GNSS-R Global Wind Product

Feixiong Huang,
Junming Xia,
Cong Yin,
Xiaochun Zhai,
Na Xu,
Guanglin Yang,
Weihua Bai,
Yueqiang Sun,
Qifei Du,
Mi Liao,
Xiuqing Hu,
Peng Zhang,
Lichang Duan,
Yan Liu

Affiliations

Feixiong Huang: ORCiD; Beijing Key Laboratory of Space Environment Exploration and Key Laboratory of Science and Technology on Space Environment Situational Awareness, National Space Science Center, Chinese Academy of Sciences, Beijing, China
Junming Xia: ORCiD; Beijing Key Laboratory of Space Environment Exploration and Key Laboratory of Science and Technology on Space Environment Situational Awareness, National Space Science Center, Chinese Academy of Sciences, Beijing, China
Cong Yin: ORCiD; Beijing Key Laboratory of Space Environment Exploration and Key Laboratory of Science and Technology on Space Environment Situational Awareness, National Space Science Center, Chinese Academy of Sciences, Beijing, China
Xiaochun Zhai: ORCiD; Innovation Center for FengYun Meteorological Satellite (FYSIC), Beijing, China
Na Xu: ORCiD; Innovation Center for FengYun Meteorological Satellite (FYSIC), Beijing, China
Guanglin Yang: Innovation Center for FengYun Meteorological Satellite (FYSIC), Beijing, China
Weihua Bai: Beijing Key Laboratory of Space Environment Exploration and Key Laboratory of Science and Technology on Space Environment Situational Awareness, National Space Science Center, Chinese Academy of Sciences, Beijing, China
Yueqiang Sun: Beijing Key Laboratory of Space Environment Exploration and Key Laboratory of Science and Technology on Space Environment Situational Awareness, National Space Science Center, Chinese Academy of Sciences, Beijing, China
Qifei Du: Beijing Key Laboratory of Space Environment Exploration and Key Laboratory of Science and Technology on Space Environment Situational Awareness, National Space Science Center, Chinese Academy of Sciences, Beijing, China
Mi Liao: Innovation Center for FengYun Meteorological Satellite (FYSIC), Beijing, China
Xiuqing Hu: ORCiD; Innovation Center for FengYun Meteorological Satellite (FYSIC), Beijing, China
Peng Zhang: ORCiD; Innovation Center for FengYun Meteorological Satellite (FYSIC), Beijing, China
Lichang Duan: Beijing Key Laboratory of Space Environment Exploration and Key Laboratory of Science and Technology on Space Environment Situational Awareness, National Space Science Center, Chinese Academy of Sciences, Beijing, China
Yan Liu: Center for Earth System Modeling and Prediction, China Meteorological Administration, Beijing, China

DOI: https://doi.org/10.1109/JSTARS.2022.3205331
Journal volume & issue: Vol. 15
pp. 7899 – 7912

Abstract

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Two different Global Navigation Satellite System (GNSS) Reflectometry wind products are to be developed for the Global Navigation Satellite System Occultation Sounder II (GNOS-II) payload on the FengYun-3E (FY-3E) satellite: A global wind product optimized for global low-to-medium wind speeds and a cyclone wind product optimized for high wind speeds in the tropical and extratropical cyclones. This article presents a comprehensive assessment of the GNOS-II global wind product for both global positioning system (GPS) and Beidou (BDS) product at wind speeds below 25 m/s using its data of first six months. Three datasets, including the European Centre for Medium-Range Weather Forecasts (ECMWF) reanalysis, HY-2B scatterometer and Soil Moisture Active Passive (SMAP) winds, are used for the assessment. The assessment of the Level 1 observables shows that the instrument's performance and calibration are generally stable. For the assessment of retrieved winds, the general performances of GPS and BDS products are similar. The overall wind speed root-mean-square error is 1.54 m/s for GPS-R and 1.44 m/s for BDS-R when compared with ECMWF, 1.48 m/s for GPS-R and 1.36 m/s for BDS-R when compared with HY-2B, and 2.08 m/s for GPS-R and 2.04 m/s for BDS-R when compared with SMAP. The overall wind speed biases for GPS-R and BDS-R are about zeros when compared with each dataset. The assessment is also made by the dependence on time, signal-to-noise ratio, observable, GNSS block, wind speed, incidence angle, and geography. Overall, the FY-3E GNOS-II global wind product is consistent over time and space with an accuracy meeting the requirement of operational use.

Published in IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing

ISSN: 1939-1404 (Print); 2151-1535 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Ocean engineering; Science: Physics: Geophysics. Cosmic physics
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4609443

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