The FengYun-3C radio occultation sounder GNOS: a review of the mission and its early results and science applications

Y Sun, W Bai, C Liu, Y Liu, Q Du, X Wang… - Atmospheric …, 2018 - amt.copernicus.org
The Global Navigation Satellite System (GNSS) Occultation Sounder (GNOS) is one of the
new-generation payloads on board the Chinese FengYun 3 (FY-3) series of operational …

Quality aspects of the Wegener Center multi-satellite GPS radio occultation record OPSv5. 6

B Angerer, F Ladstädter… - Atmospheric …, 2017 - amt.copernicus.org
The demand for high-quality atmospheric data records, which are applicable in climate
studies, is undisputed. Using such records requires knowledge of the quality and the specific …

A modification to the standard ionospheric correction method used in GPS radio occultation

SB Healy, ID Culverwell - Atmospheric Measurement …, 2015 - amt.copernicus.org
A modification to the standard bending-angle correction used in GPS radio occultation (GPS-
RO) is proposed. The modified approach should reduce systematic residual ionospheric …

New higher-order correction of GNSS RO bending angles accounting for ionospheric asymmetry: Evaluation of performance and added value

C Liu, G Kirchengast, S Syndergaard, M Schwaerz… - Remote Sensing, 2020 - mdpi.com
The residual ionospheric error (RIE) from higher-order terms in the refractive index is not
negligible when using global navigation satellite system (GNSS) radio occultation (RO) data …

A simulation study with a new residual ionospheric error model for GPS radio occultation climatologies

J Danzer, SB Healy, ID Culverwell - Atmospheric Measurement …, 2015 - amt.copernicus.org
In this study, a new model was explored which corrects for higher order ionospheric
residuals in Global Positioning System (GPS) radio occultation (RO) data. Recently, the …

Sensitivity analysis and impact of the kappa‐correction of residual ionospheric biases on radio occultation climatologies

J Danzer, M Schwaerz, G Kirchengast… - Earth and Space …, 2020 - Wiley Online Library
A new model was recently introduced to correct for higher‐order ionospheric residual biases
in radio occultation (RO) data. The model depends on the α 1 and α 2 dual‐frequency …

Integrating uncertainty propagation in GNSS radio occultation retrieval: From bending angle to dry‐air atmospheric profiles

J Schwarz, G Kirchengast… - Earth and Space …, 2017 - Wiley Online Library
Global Navigation Satellite Systems (GNSS) Radio Occultation (RO) observations, globally
available as a continuous record since 2001, are highly accurate and long‐term stable data …

Assessment of NOAA NUCAPS upper air temperature profiles using COSMIC GPS radio occultation and ARM radiosondes

ML Feltz, L Borg, RO Knuteson, D Tobin… - Journal of …, 2017 - Wiley Online Library
Abstract The US National Oceanic and Atmospheric Administration (NOAA) recently began
operational processing to derive vertical temperature profiles from two new sensors, Cross …

Systematic ionospheric residual errors in GNSS radio occultation: Theory for spherically stratified media

S Syndergaard, G Kirchengast - Earth and Space Science, 2022 - Wiley Online Library
The standard ionospheric correction of bending angles in Global Navigation Satellite
System (GNSS) radio occultation (RO) measurements removes most of the influence from …

Understanding ionospheric and geomagnetic effects on residual biases in radio occultation data for stratospheric climate monitoring

C Liu, J Danzer, G Kirchengast, SJ Haas… - Journal of …, 2024 - Wiley Online Library
Higher‐order residual ionospheric errors in Global Navigation Satellite System (GNSS)
radio occultation (RO) data can induce a systematic residual ionospheric bias (RIB) in RO …