Results 81 to 90 of about 446 (185)

Uncertainty Propagation From Radio Occultation Profiles to Aggregated Atmospheric Gridded Fields

Earth and Space Science, Volume 13, Issue 1, January 2026.
Abstract Radio occultation is a well‐established remote sensing method that provides reliable estimates of atmospheric profiles of diverse variables, including temperature and pressure. However, as with all indirect methods, radio occultation has some inherent systematic and random error effects, which lead to observational uncertainties.
S. Scher, F. Ladstädter, M. Schwärz, J. Innerkofler, G. Kirchengast   +4 more
wiley   +1 more source

Topside Ionization and Effect on Altitudinal Evolution of Nocturnal Ionospheric Irregularities

Space Weather, Volume 24, Issue 1, January 2026.
Abstract Topside ionospheric electron density (Ne) and its control on the variabilities in nocturnal ionospheric irregularities is examined globally using electron density measurements from COSMIC‐2 and Swarm satellite, along with the Swarm satellite‐based Ionospheric Plasma Irregularity (IPIR) index for low and high solar activity (LSA and HSA ...
T. V. Sruthi, G. Manju
wiley   +1 more source

First Observation of Localized F Region Bottom‐Type Scattering Layer by All‐Sky Radar at Low Latitude

Geophysical Research Letters, Volume 52, Issue 23, 16 December 2025.
Abstract F‐region bottom‐type scattering layers (BSLs) occurring over equatorial and low latitudes may act as the precursor of plasma bubbles, usually observed by narrow‐beam very high frequency radars. However, their spatial features remain unknown due to the radar narrow field‐of‐view.
Wenjie Sun, Guozhu Li, Lianhuan Hu, Biqiang Zhao, Jianfei Liu, Haiyong Xie, Guofeng Dai, Xiukuan Zhao, Yi Li, Baiqi Ning   +9 more
wiley   +1 more source

Ionospheric data fusion with GNSS, GNSS-RO and satellite altimetry based on machine learning

Global ionospheric maps (GIMs) are widely used ionospheric products, especially in Global Navigation Satellite System (GNSS) applications. They allow for instance to correct for the ionospheric delays in single-frequency applications. The input data for generating GIMs is typically obtained from dual-frequency observations at globally distributed GNSS ...
Marcel Iten, Shuyin Mao, Benedikt Soja
openaire   +2 more sources

Local Time Variability of Gravity Wave Activity Revealed by SABER Temperature Observations

Geophysical Research Letters, Volume 52, Issue 23, 16 December 2025.
Abstract The global characteristics of gravity wave potential energy variation depending on local time are analyzed using satellite observations covering a broad range of local times. A clear diurnal variation is observed in the equatorial region between 15°S and 15°N.
D. Koshin, N. M. Pedatella, A. K. Smith, H.‐L. Liu   +3 more
wiley   +1 more source

Bridging the Gap Between the Earth's Ionosphere and Plasmasphere

Geophysical Research Letters, Volume 52, Issue 23, 16 December 2025.
Abstract Cold plasma distribution in the ionosphere‐plasmasphere system governs wave‐particle interactions, plasma energization and loss, and radio wave propagation. A longstanding observational gap at altitudes ∼ ${\sim} $800–8,000 km has largely prevented studying the coupled dynamics of the two regions.
Artem Smirnov, Yuri Shprits, Hermann Lühr, Elena A. Kronberg, Jerry Goldstein, Yoshizumi Miyoshi, Fabricio Prol, Alessio Pignalberi, Natalia Buzulukova, Nicholas Pedatella, Bernhard Haas, Dedong Wang, Yoshiya Kasahara, Fuminori Tsuchiya, Shoya Matsuda, Atsuki Shinbori, Ayako Matsuoka   +16 more
wiley   +1 more source

An Investigation of GNSS Radio Occultation Data Pattern for Temperature Monitoring and Analysis over Africa

NDT - Journal of Non-Destructive Testing
Climate change monitoring and analysis is a critical task that involves the consideration of both spatial and temporal dimensions. Theimproved spatial distribution of the global navigation satellite system (GNSS) ground-based Continuous Operating ...
Usman Sa’i Ibrahim, Kamorudeen Aleem, Tajul Ariffin Musa, Terwase Tosin Youngu, Yusuf Yakubu Obadaki, Wan Anom Wan Aris, Kelvin Tang Kang Wee   +6 more
doaj   +1 more source

Tropospheric Information Content Embedded in GNSS RO Reflected Signals

, 2010
5 páginas. International Beacon Satellite Symposium (2010 : Barcelona, Espanya) This work presents the studies being conducted on the retrieval of tropospheric information from GNSS Radio-Occultation signals reflected off of the Earth’s surface.
Cardellach, Estel, Oliveras, Santiago, Rius, Antonio   +2 more
openaire   +1 more source

Polarimetric GNSS RO aboard the PAZ satellite

, 2020
Talk delivered in Informal Seminar UK MetOffice in Great Britain, 21 February 2020 ,
openaire   +1 more source

Advancing GNSS-RO Detection of Ionospheric Irregularities Using Refined Back Propagation and GOLD Data

Proceedings of the 7th URSI Asia-Pacific RadioScience Conference – AP-RASC 2025
This paper investigates on the detection and localization of ionospheric irregularities using GNSS Radio Occultation (GNSS-RO). We propose a new segmented phase screen (PS) approach to improve vertical and horizontal localization and remove the presence of outliers. The study focused on the May 2024 geomagnetic solar storm is presented, consisting of a
Quilis Alfonso, Carles, Ludwig Barbosa, Vinícius, Rasch, Joel, Carlström, Anders, Pettersson, Mats, Vu, Viet Thuy   +5 more
openaire   +2 more sources