Results 61 to 70 of about 420 (173)

Analysis of Ionospheric Disturbances Near 120°E in the Asia‐Pacific Sector During the May 2024 Superstorm Using Multi‐Instrument Observations

Space Weather, Volume 24, Issue 2, February 2026.
Abstract On 10 May 2024, a severe G5 geomagnetic storm—the most intense of solar cycle 25—significantly disturbed the global ionosphere. This study presents a comprehensive analysis using multi‐instrument observations, including ground‐based measurements from BDS‐GEO total electron content (TEC), digital ionosondes, and magnetometers; model outputs ...
Yue Sun, Jun Tang, Hanyang Teng, Chaoqian Xu, Liang Zhang   +4 more
wiley   +1 more source

Forecast Impact of FORMOSAT‐7/COSMIC‐2 GNSS Radio Occultation Measurements

Atmospheric Science Letters, 2021
The FORMOSAT‐7/COSMIC‐2 GNSS‐RO mission was launched on June 25, 2019, and it has provided a large increase in the number of GNSS‐RO observations available for operational numerical weather prediction (NWP) in the latitude band between ±40°. A key aim of
Benjamin Ruston, Sean Healy
doaj   +1 more source

Direct Observational Evidence of the Mesoscale Gravity Wave Modulations on Low‐Latitude Sporadic E Layer

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract Sporadic E (Es) layer plays essential role in ionosphere‐atmosphere coupling. Theoretical simulations show that the atmospheric gravity waves (GWs) in the lower thermosphere are the main modulatory source on Es dynamics at small spatial scales and short periods.
Junyi Wang, Xinan Yue, Xu Zhou, Yihui Cai, Feng Ding, Jorge L. Chau, David C. Fritts, Juha Vierinen, Alan Z. Liu, Baiqi Ning   +9 more
wiley   +1 more source

An Evaluation of Fengyun-3C Radio Occultation Atmospheric Profiles Over 2015–2018

Remote Sensing, 2020
Fengyun-3C (FY-3C) is the first Chinese satellite that is capable of using the Radio Occultation (RO) technique to retrieve atmospheric profiles. This research evaluates the quality of FY-3C RO profiles including refractivity, temperature, and specific ...
Jinde Wei, Ying Li, Kefei Zhang, Mi Liao, Weihua Bai, Congliang Liu, Yan Liu, Xiaoming Wang   +7 more
doaj   +1 more source

Global GNSS Radio Occultation Mission for Meteorology, Ionosphere & Climate [PDF]

, 2010
The GNSS RO mission represents a revolution in atmospheric sounding from space, with precise, accurate, and all-weather global observations useful for weather, climate, and space weather research and operations. The FORMOSAT-3 constellation has been unanimously regarded by the major user community as “the world's most accurate, precise, and stable ...
L., Yen, Nick, Chen-Joe, Fong,, Chung-Huei, Chu,, Jiun-Jih, Miau,, Yuei-An, Liou,, Ying-Hwa, Kuo,   +5 more
openaire   +2 more sources

The benefits and challenges of using dense Mode‐S aircraft winds at ECMWF

Quarterly Journal of the Royal Meteorological Society, Volume 152, Issue 774, January 2026 Part A.
In November 2022 ECMWF stopped using Mode‐S winds because their very high density in central Europe caused problems for the assimilation system. The data were reintroduced operationally in November 2023 combined with an improved aircraft thinning algorithm.
Bruce Ingleby
wiley   +1 more source

Climatology of Medium‐Scale Traveling Ionospheric Disturbances Over Continental US Using GNSS TEC From 2012 to 2023

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract Medium‐Scale Traveling Ionospheric Disturbances (MSTIDs) have long been a subject of interest in ionospheric research. However, their spatiotemporal variability across regions, local times, seasons, and solar cycles is very complicated and remains not well established.
Jing Liu, Shun‐Rong Zhang, Anthea J. Coster, Philip J. Erickson, Hanli Liu   +4 more
wiley   +1 more source

First Results of Airborne GNSS Radio Occultation Sounding From Airbus Commercial Aircraft

Geophysical Research Letters
The lack of high vertical resolution atmospheric thermodynamic structure observations inside or near major weather events impedes our understanding of physical processes and their predictability in numerical weather prediction (NWP) models.
Feiqin Xie, Kevin J. Nelson, Bryan C. Chan, Ashish Goel, Jonathan Kosh, Mike Vergalla   +5 more
doaj   +1 more source

Tutorial on GNSS Polarimetric Radio Occultations (GNSS PRO)

, 2020
Talk delivered in 1st Paz Polarimetric Radio Occultations User Workshop, 23 April 2020 45 minute tutorial to explain the basics of the GNSS polarimetric radio occultation.
Cardellach, Estel, Padullés, Ramon, Ao, Chi On, Turk, F. Joe, Torre-Juárez, Manuel de la   +4 more
openaire   +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