Articles | Volume 18, issue 4
https://doi.org/10.5194/amt-18-843-2025
© Author(s) 2025. 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-18-843-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
19 Feb 2025
Research article |
| 19 Feb 2025
| 19 Feb 2025
GNSS-RO residual ionospheric error (RIE): a new method and assessment
NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Valery A. Yudin
Department of Physics, The Catholic University of America, Washington, DC 20064, USA
Kyu-Myong Kim
NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Mohar Chattopadhyay
Science Systems and Applications Inc., Lanham, MD 20706, USA
Lawrence Coy
Science Systems and Applications Inc., Lanham, MD 20706, USA
Ruth S. Lieberman
NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
C. C. Jude H. Salinas
GESTAR-II, University of Maryland Baltimore County, Baltimore, MD 21250, USA
Jae N. Lee
JCET, University of Maryland Baltimore County, Baltimore, MD 21250, USA
NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
Guiping Liu
NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
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Jie Gong, Dong L. Wu, and Patrick Eriksson
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Guoyong Wen, Alexander Marshak, Si-Chee Tsay, Jay Herman, Ukkyo Jeong, Nader Abuhassan, Robert Swap, and Dong Wu
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Short summary
Global Navigation Satellite System radio occultation data help monitor climate and weather prediction but are affected by residual ionospheric errors (RIEs). A new excess-phase-gradient method detects and corrects RIEs, showing both positive and negative values, varying by latitude, time, and solar activity. Tests show that RIE impacts polar stratosphere temperatures in models, with differences up to 3–4 K. This highlights the need for RIE correction to improve the accuracy of data assimilation.
Global Navigation Satellite System radio occultation data help monitor climate and weather...
