Results 1 to 10 of about 420 (173)

Assessment of ZTD Derived from COSMIC Occultation Data with ECWMF, Radiosondes, and GNSS [PDF]

Sensors, 2022
Global Navigation Satellite System (GNSS) signals generate slant tropospheric delays when they pass through the atmosphere, which is recognized as the main source of error in many spatial geodetic applications. The zenith tropospheric delay (ZTD) derived
Naifeng Fu, Mingbo Jiang, Fenghui Li, Peng Guo, Chunping Hou, Mengjie Wu, Jianming Wu, Zhipeng Wang, Liang Kan   +8 more
doaj   +2 more sources

KOMPSAT-5 GNSS Radio Occultation Data Operations [PDF]

Geo Data, 2022
The Korea Aerospace Research Institute launched KOMPSAT-5 on August 22, 2013, and has been operating for 10 years. KOMPSAT-5 has SAR (Synthetic Aperture Radar) for earth observation missions, and collects data necessary for earth atmosphere analysis ...
Okchul Jung, Jaedong Seong, Myeongshin Lee, Daewon Chung   +3 more
doaj   +2 more sources

Monitoring global climate change using GNSS radio occultation [PDF]

npj Climate and Atmospheric Science, 2022
The emerging signal of climate change is now clearly evident in Global Navigation Satellite System (GNSS) radio occultation (RO) data, matching predictions made by climate models 15 years ago. The observed RO trends represent well-understood responses to
Hans Gleisner, Mark A. Ringer, Sean B. Healy   +2 more
doaj   +2 more sources

Probability of intense precipitation from polarimetric GNSS radio occultation observations. [PDF]

Q J R Meteorol Soc, 2018
There is currently a gap in satellite observations of the moisture structure during heavy precipitation conditions, since infrared and microwave sounders cannot sense water‐vapour structure near the surface in the presence of intense precipitation. Conversely, Global Navigation Satellite System (GNSS) radio occultations (RO) can profile the moisture ...
Cardellach E, Padullés R, Tomás S, Turk FJ, Ao CO, de la Torre-Juárez M.   +5 more
europepmc   +4 more sources

Real-Time Tomographic Inversion of Truncated Ionospheric GNSS Radio Occultations

Remote Sensing, 2023
This paper presents a new way of combining Abel inversion and the Chapman model with a linearly increasing scale height to retrieve ionospheric electron density vertical profiles from truncated-sounding radio-occultation data. A linear Vary–Chap model is
Germán Olivares-Pulido, Manuel Hernández-Pajares, Enric Monte-Moreno, Haixia Lyu, Victoria Graffigna, Estel Cardellach, Mainul Hoque, Fabricio S. Prol, Riccardo Notarpietro, Miquel Garcia-Fernandez   +9 more
doaj   +4 more sources

Assimilation of GNSS radio occultation observations in GRAPES [PDF]

Atmospheric Measurement Techniques, 2014
This paper reviews the development of the global navigation satellite system (GNSS) radio occultation (RO) observations assimilation in the Global/Regional Assimilation and PrEdiction System (GRAPES) of China Meteorological Administration, including ...
Y. Liu, Y. Liu, J. Xue
doaj   +3 more sources

Global tropopause height determination using GNSS radio occultation

Egyptian Journal of Remote Sensing and Space Sciences, 2023
The tropopause layer is a crucial stratum of the earth's atmosphere that attracts more interest from climate and atmospheric researchers. The observables of the global navigation satellite system (GNSS) allow for continuous and long-term research of the ...
Mohamed Zhran, Ashraf Mousa
doaj   +2 more sources

GNSS Radio Occultation in Advanced Numerical Weather Prediction Models

GEOmedia, 2019
GPS-Radio Occultation (GPS-RO), and generally, Global Navigation Satellite System Radio Occultation (GNSS-RO), is a technique that measures the refractivity of the Earth's atmosphere as a Low Earth Orbit (LEO) satellite listens to the radio signal of a ...
Guillermo Bosch
doaj   +4 more sources

A simplified approach for generating GNSS radio occultation refractivity climatologies [PDF]

Atmospheric Measurement Techniques, 2013
The possibility of simplifying the retrieval scheme required to produce GNSS radio occultation refractivity climatologies is investigated. In a new, simplified retrieval approach, the main statistical analysis is performed in bending angle space and an ...
H. Gleisner, S. B. Healy
doaj   +4 more sources

GNSS Radio Occultation Data in the AWS Cloud

Earth and Space Science
Radio occultation (RO) by the Earth's atmosphere of the transmitted signals of the Global Navigation Satellite Systems' satellites has improved numerical weather prediction, has benefited atmospheric process studies, and benchmarked climate change by its
S. S. Leroy, A. E. McVey, S. M. Leidner, H. Zhang, H. Gleisner   +4 more
doaj   +2 more sources