Ionospheric correction of GPS radio occultation data in the troposphere

Zeng, Z.; Sokolovskiy, S.; Schreiner, W.; Hunt, D.; Lin, J.; Kuo, Y.-H.

doi:https://doi.org/10.5194/amt-9-335-2016

Articles | Volume 9, issue 2

https://doi.org/10.5194/amt-9-335-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/amt-9-335-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 9, issue 2

Research article

|

03 Feb 2016

Research article |

| 03 Feb 2016

Ionospheric correction of GPS radio occultation data in the troposphere

Z. Zeng, S. Sokolovskiy, W. Schreiner, D. Hunt, J. Lin, and Y.-H. Kuo

Download

Final revised paper (published on 03 Feb 2016)
Preprint (discussion started on 24 Jul 2015)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

- Printer-friendly version

- Supplement

SC C2653: 'Comment on theoretical model for extrapolation of the bending angle difference', Ian Culverwell, 20 Aug 2015
- AC C4060: 'Reply to Dr. Culverwell', Zhen Zeng, 25 Nov 2015
  - AC C4478: '2nd Reply to Dr. Culverwell', Zhen Zeng, 22 Dec 2015
RC C2966: 'Review of amt-2015-179 "Ionospheric correction of GPS radio occultation data in the troposphere", by Z. Zeng et al.', Anonymous Referee #1, 15 Sep 2015
- AC C4061: 'Reply to reviewer #1', Zhen Zeng, 25 Nov 2015
RC C3050: 'Ionospheric correction of GPS radio occulation data in the troposphere', Anonymous Referee #2, 21 Sep 2015
- AC C4062: 'Reply to reviewer #2', Zhen Zeng, 25 Nov 2015

Short summary

This study discusses the ionospheric correction problem of RO data in the troposphere and investigates an optimal transition height (OTH) for replacing the standard linear combination method by the L1–L2 bending angle extrapolated from above. By comparing the RO ionosphere-free bending angles with the ECMWF global forecast ones, the OTH is found when it gives the minimal standard deviations. The results show the OTH depends mainly on the L2 signal and is ~20 km for COSMIC L2P and ~10 km for L2C.