Results 1 to 10 of about 910 (213)

Atmospheric Rivers in Africa Observed with GNSS-RO and Reanalysis Data

open access: yesRemote Sensing
Atmospheric Rivers (ARs) transport significant amounts of moisture and cause extreme precipitation events, yet their behavior over Africa is not well understood. This study addresses this gap by analyzing the occurrence, seasonal variability, and spatial
Linda Martina Maier   +2 more
doaj   +3 more sources

Global GNSS-RO Electron Density in the Lower Ionosphere

open access: yesRemote Sensing, 2022
Lack of instrument sensitivity to low electron density (Ne) concentration makes it difficult to measure sharp Ne vertical gradients (four orders of magnitude over 30 km) in the D/E-region.
Swarnalingam, Nimalan   +2 more
core   +6 more sources

A Novel Approach to Evaluate GNSS-RO Signal Receiver Performance in Terms of Ground-Based Atmospheric Occultation Simulation System

open access: yesRemote Sensing, 2023
The global navigation satellite system radio occultation (GNSS-RO) is an important means of space-based meteorological observation. It is necessary to test the Global Navigation Satellite System Occultation signal receiver on the ground before the ...
Wei Li   +9 more
doaj   +2 more sources

The 2021 la Palma volcanic eruption and its impact on ionospheric scintillation as measured from GNSS reference stations, GNSS-R and GNSS-RO [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2023
Ionospheric disturbances induced by seismic activity have been studied in recent years by many authors, showing an impact both before and after the occurrence of earthquakes.
Camps Carmona, Adriano José   +9 more
core   +6 more sources

Effect of Multiple GNSS Integration on the Number and Spatiotemporal Coverage of Radio Occultation Events

open access: yesAtmosphere, 2022
The development of global navigation satellite systems (GNSSs) and multi-system compatible radio occultation (RO) techniques provides favorable conditions and opportunities for increasing the number of occultation events and improving their ...
Congliang Liu   +6 more
doaj   +2 more sources

Planetary boundary layer height retrieval using GNSS Radio Occultation over Egypt

open access: yesEgyptian Journal of Remote Sensing and Space Sciences, 2022
Global Navigation Satellite System (GNSS) Radio Occultation (RO) is an excellent remote sensing technique for sounding the atmosphere. GNSS satellites send signals through the atmosphere of the Earth, and a GNSS receiver mounted on a Low Earth Orbit (LEO)
Mohamed Zhran, Ashraf Mousa
doaj   +2 more sources

The 2021 volcanic eruption in La Palma Island and its impact on ionospheric scintillation as measured from GNSS reference stations, GNSS-R, and GNSS-RO [PDF]

open access: yes, 2022
Ionospheric disturbances induced by seismic activity have been studied in the last years by many authors, showing an impact both before and after the occurrence of earthquakes.
Camps Carmona, Adriano José   +3 more
core   +4 more sources

An Innovative Signal Processing Scheme for Spaceborne Integrated GNSS Remote Sensors

open access: yesRemote Sensing, 2023
The vigorous development of the global navigation satellite system (GNSS) has led to a boom in GNSS radio occultation (GNSS RO) and GNSS reflectometry (GNSS-R) techniques.
Tongsheng Qiu   +12 more
doaj   +2 more sources

Applications of GNSS-RO to Numerical Weather Prediction and Tropical Cyclone Forecast [PDF]

open access: yesAtmosphere, 2020
The global navigation satellite system (GNSS) radio occultation (RO) technique is an atmospheric sounding technique that originated in the 1990s. The data provided by this approach are playing a consistently significant role in atmospheric research and ...
Xianyi Wang   +11 more
core   +3 more sources

Global tropopause height determination using GNSS radio occultation

open access: yesEgyptian 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

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