Preprints
https://doi.org/10.5194/amt-2022-198
https://doi.org/10.5194/amt-2022-198
 
12 Aug 2022
12 Aug 2022
Status: a revised version of this preprint was accepted for the journal AMT and is expected to appear here in due course.

GNSS Radio Occultation Soundings from Commercial Off-the-Shelf Receivers Onboard Balloon Platforms

Kevin J. Nelson1, Feiqin Xie1, Bryan C. Chan2, Ashish Goel2, Jonathan Kosh2, Tyler G. R. Reid2, Corey R. Snyder2, and Paul M. Tarantino2 Kevin J. Nelson et al.
  • 1Texas A&M University - Corpus Christi, Corpus Christi, TX
  • 2Night Crew Labs, LLC, Woodside, CA

Abstract. The Global Navigation Satellite System (GNSS) radio occultation (RO) technique has proven to be an effective tool for Earth atmosphere profiling. Traditional spaceborne RO satellite constellations are expensive with relatively low sampling rates for individual satellites. Airborne RO platforms can provide much higher spatial and temporal sampling of ROs around regional weather events. This paper explores the capability of a low-cost and scalable Commercial-Off-The-Shelf (COTS) GNSS receiver onboard high-altitude balloons. The refractivity retrievals from balloon-borne RO payloads obtained from two flight campaigns (World View and ZPM-1) are presented. The balloon-borne RO soundings from the World View campaign show high-quality refractivity profiles in the troposphere with near-zero median difference (~2.3 % median-absolute-deviation) from the colocated ECMWF ERA5 reanalysis data. Soundings from the ZPM-1 campaign show a relatively large positive bias (~2.5 %). In summary, the low-cost COTS RO payloads onboard balloon platforms are worth further improvement for dense targeted atmospheric soundings to improve regional weather forecasts.

Kevin J. Nelson et al.

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on amt-2022-198', Anonymous Referee #1, 01 Oct 2022
    • AC1: 'Reply on RC1', Kevin Nelson, 24 Nov 2022
  • RC2: 'Comment on amt-2022-198', Anonymous Referee #2, 11 Oct 2022
    • AC2: 'Reply on RC2', Kevin Nelson, 24 Nov 2022

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on amt-2022-198', Anonymous Referee #1, 01 Oct 2022
    • AC1: 'Reply on RC1', Kevin Nelson, 24 Nov 2022
  • RC2: 'Comment on amt-2022-198', Anonymous Referee #2, 11 Oct 2022
    • AC2: 'Reply on RC2', Kevin Nelson, 24 Nov 2022

Kevin J. Nelson et al.

Kevin J. Nelson et al.

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Short summary
Global Navigation Satellite System (GNSS) radio occultation (RO) remote sensing is effective for atmospheric profiling. The capability of a low-cost and scalable Commercial-Off-The-Shelf (COTS) GNSS receiver onboard high-altitude balloons is tested in two campaigns. Preliminary results demonstrate high-quality refractivity observations from the COTS RO receiver, which is worth further improvement for dense atmospheric observations over a targeted region.