Articles | Volume 19, issue 2
https://doi.org/10.5194/amt-19-659-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-19-659-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
28 Jan 2026
Research article |
| 28 Jan 2026
| 28 Jan 2026
Quality aspects of Fengyun3 D∕E radio occultation bending angle products
Ying Li
State Key Laboratory of Precision Geodesy, Innovation Academy for Precision Measurement Science and Technology, CAS, Wuhan 430077, China
Yan Liu
CORRESPONDING AUTHOR
China Meteorology Administration Earth System Modeling and Prediction Centre, Beijing 100081, China
Wenwu Ding
State Key Laboratory of Precision Geodesy, Innovation Academy for Precision Measurement Science and Technology, CAS, Wuhan 430077, China
Mi Liao
National Satellite Meteorological Centre, Chinese Meteorological Administration (NSMC/CMA), Beijing 100081, China
Xingliang Huo
State Key Laboratory of Precision Geodesy, Innovation Academy for Precision Measurement Science and Technology, CAS, Wuhan 430077, China
Jinying Ye
State Key Laboratory of Precision Geodesy, Innovation Academy for Precision Measurement Science and Technology, CAS, Wuhan 430077, China
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We develop a new approach to monitor sudden stratospheric warming (SSW) events since 1980 and develop a 42-year SSW event climatology. Detection and evaluation results suggest that the new method is robust for SSW monitoring. We also found an increase in the duration of SSW main-phase warmings of about 5(±2) d over the three decades from the 1980s to the 2010s, raising the average duration from about 10 to 15 d, and the warming strength is also found increased.
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We introduce a new method to detect and monitor sudden stratospheric warming (SSW) events using Global Navigation Satellite System (GNSS) radio occultation (RO) data at high northern latitudes and demonstrate it for the well-known Jan.–Feb. 2009 event. We found that RO data are capable of SSW monitoring. Based on our method, a SSW event can be detected and tracked, and the duration and the strength of the event can be recorded. The results are consistent with other research on the 2009 event.
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Short summary
Fengyun radio occultation products are useful for numerical weather prediction (NWP). However, its accuracy required to be further improved from middle stratosphere above. We developed a quality control scheme and evaluate the Fengyun bending angles’ quality. The new quality control scheme are useful in rejecting outliers and products’ quality have been well understood. The results are promising in improving the performance of Fengyun data in NWP and climate applications.
Fengyun radio occultation products are useful for numerical weather prediction (NWP). However,...
