Journal cover Journal topic
Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union

Journal metrics

  • IF value: 2.989 IF 2.989
  • IF 5-year<br/> value: 3.489 IF 5-year
    3.489
  • CiteScore<br/> value: 3.37 CiteScore
    3.37
  • SNIP value: 1.273 SNIP 1.273
  • SJR value: 2.026 SJR 2.026
  • IPP value: 3.082 IPP 3.082
  • h5-index value: 45 h5-index 45
doi:10.5194/amt-2016-291
© Author(s) 2016. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
10 Oct 2016
Review status
This discussion paper is under review for the journal Atmospheric Measurement Techniques (AMT).
Application of Fengyun 3-C GNSS occulation sounder for assessing global ionospheric response to magnetic storm event
Weihua Bai1,2,3, Guojun Wang1,4, Yueqiang Sun1,2,3, Jiankui Shi1,3,4, Xiangguang Meng1,2, Dongwei Wang1,2, Qifei Du1,2, Xianyi Wang1,2, Junming Xia1,2, Yuerong Cai1,2, Congliang Liu1,2, Wei Li1,2, Chunjun Wu1,2, Danyang Zhao1,2, Di Wu1,2, and Cheng Liu1,2 1National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China
2Beijing Key Laboratory of Space Environment, Beijing 100190, China
3University of Chinese Academy of Sciences, Beijing 100049, China
4State Key Laboratory of Space Weather, Beijing 100190, China
Abstract. The rapid advancement of global navigation satellite system (GNSS) occultation technology in recent years has made it one of the most advanced space detection technologies of the 21st century. GNSS radio occultation has many advantages, including all-weather operation, global coverage, high vertical resolution, high precision, long-term stability, and self-calibration. Data products from GNSS occultation sounding can greatly enhance ionospheric observations and contribute to space weather monitoring, forecasting, modeling, and research. In this study, GNSS occultation sounder (GNOS) results from a radio occultation sounding payload aboard the Fengyun 3-C (FY3-C) satellite were compared with ground-based ionosonde observations. Correlation coefficients for peak electron density (NmF2) derived from GNOS Global Position System (GPS) and Beidou navigation system (BDS) products with ionosonde data were higher than 0.9, and standard deviations were less than 20 %. Global ionospheric effects of the strong magnetic storm event in March 2015 were analyzed using GNOS results supported by ionosonde observations. The magnetic storm caused a significant disturbance in NmF2 and hmF2 levels. Suppressed daytime and nighttime NmF2 levels indicated mainly negative storm conditions. In the zone of geomagnetic inclination between 40–80 °, average NmF2 during the geomagnetic storm showed the same basic trends in GNOS measurements, and in observations from 17 ground-based ionosonde stations, and confirmed the negative effect of the event on the ionosphere. The analysis demonstrates the reliability of the GNSS radio occultation sounding instrument GNOS aboard the FY3-C satellite, and confirms the utility of ionosphere products from GNOS for statistical and event-specific ionospheric physical analyses. Future FY3 series satellites, and increasing numbers of Beidou navigation satellites, will provide increasing GNOS occultation data on the ionosphere, which will contribute to ionosphere research and forecasting applications.

Citation: Bai, W., Wang, G., Sun, Y., Shi, J., Meng, X., Wang, D., Du, Q., Wang, X., Xia, J., Cai, Y., Liu, C., Li, W., Wu, C., Zhao, D., Wu, D., and Liu, C.: Application of Fengyun 3-C GNSS occulation sounder for assessing global ionospheric response to magnetic storm event, Atmos. Meas. Tech. Discuss., doi:10.5194/amt-2016-291, in review, 2016.
Weihua Bai et al.
Weihua Bai et al.
Weihua Bai et al.

Viewed

Total article views: 161 (including HTML, PDF, and XML)

HTML PDF XML Total BibTeX EndNote
119 31 11 161 7 11

Views and downloads (calculated since 10 Oct 2016)

Cumulative views and downloads (calculated since 10 Oct 2016)

Viewed (geographical distribution)

Total article views: 161 (including HTML, PDF, and XML)

Thereof 161 with geography defined and 0 with unknown origin.

Country # Views %
  • 1

Saved

Discussed

Latest update: 29 Mar 2017
Publications Copernicus
Download
Short summary
This study reports on the application of the FY3-C GNSS occulation sounder (GNOS) for assessing global ionospheric response to magnetic storm events. We use the March 2015 magnetic storm event to demonstrate the reliability of NmF2 data derived from the instrument through comparisons with ground-based ionosonde observations.The analysis demonstrates the reliability of the GNSS radio occultation sounding instrument GNOS aboard the FY3-C satellite, and validates its ionosphere products.
This study reports on the application of the FY3-C GNSS occulation sounder (GNOS) for assessing...
Share