Results 31 to 40 of about 494 (132)

Anomalous Zenith Total Delays for an Insular Tropical Location: The Tahiti Island Case

Remote Sensing, 2022
The weighted mean temperature of the troposphere, Tm, is a key parameter in GNSS meteorology. It can be routinely derived based on meteorological data from radiosonde (RS) or numerical weather models. Alternatively, it can be also derived through a least-
Fangzhao Zhang, Peng Feng, Guochang Xu, Jean-Pierre Barriot   +3 more
doaj   +1 more source

Assimilation of 5G Base Station Networks as Ultra‐Dense Atmospheric Sensors for Advancing Heavy Rainfall Prediction

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract The zenith total delay (ZTD) retrieved from 5G communication base stations represents a novel observation source for numerical weather prediction (NWP), leveraging the extensive global deployment of 5G infrastructure. In this study, the direct assimilation of 5G‐ZTD observations into a high‐resolution NWP system was accomplished for the first ...
Jian Yin, Xiefei Zhi, Danni Huang, Chunqing Shang, Hong Liang, Kezuan Wang   +5 more
wiley   +1 more source

The Wessex Convection Experiment (WesCon)–Observing the Evolving Structures of Turbulence (WOEST): Coordinated Aircraft and Ground‐Based Observations of Turbulence and Convection in Southwest England During Summer 2023

Geoscience Data Journal, Volume 13, Issue 4, October 2026.
This paper summarises a coordinated field campaign in southern England in summer 2023 as part of the ParaChute programme, which studied atmospheric turbulence to improve weather and climate models. The field campaign used ground‐based instruments, aircraft and drones to observe turbulence and storms, creating datasets to develop better turbulence ...
Sarah L. Barr, Ryan R. Neely III, David M. Schultz, Thorwald H. M. Stein, Steven J. Abel, Michael Baidu, Paul A. Barrett, Lindsay J. B. Rhodes, Jake Bland, Timothy Darlington, Edward Gryspeerdt, Natalie J. Harvey, Humphrey W. Lean, Chun Hay Brian Lo, Aoife McQuaid, Emily G. Norton, Simon R. Osborne, Ben S. Pickering, Philip Rosenberg, Hugo M. Ricketts, Joseph Robinson, Robert J. Thompson, Christopher J. Walden, Freya I. Addison, Jennifer K. Brooke, Peter Clark, Ronald Clark, Martin I. Daily, Alex Fearn, Polly B. Foster, Suzanne L. Gray, James Groves, Kirsty E. Hanley, Amanda Kerr‐Munslow, Jona Keimer, Martin Kumm, Justin M. Langridge, Jacob Lin, Laurents R. R. Marker, James R. McGregor, Heather Moore, Benjamin J. Murray, Jeremy D. Price, Alexander J. Roberts, Robert W. Scovell, Jens Wellhausen, Alison J. Stirling   +46 more
wiley   +1 more source

Removing the Effect of Source Structure From Correlated VLBI Data

Radio Science, Volume 61, Issue 10, October 2026.
Abstract Recent studies suggest that in geodetic very long baseline interferometry (VLBI) the assumption of sources being point‐like results in a significant residual error introduced by the effect of source structure. Our aim is to remove the impact of source structure from geodetic VLBI data right after the correlation step. For this purpose, we have
Frédéric Jaron, Víctor Pérez‐Díez, Hana Krásná, Johannes Böhm, Patrick Charlot, Arnaud Collioud, Jakob Gruber, Iván Martí‐Vidal, Axel Nothnagel   +8 more
wiley   +1 more source

Precipitable Water Vapour Estimation from GNSS Observations: Methodology and Evaluation during a High-Precipitation Month in Santa Maria (RS) [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Precipitable Water Vapour (PWV) represents the total amount of water vapour contained in a vertical column of the atmosphere that is available for precipitation.
A. M. Albuquerque, T. A. F. Gouveia, D. B. M. Alves   +2 more
doaj   +1 more source

GNSS Data Processing and Validation of the Altimeter Zenith Wet Delay around the Wanshan Calibration Site

Remote Sensing, 2022
The Wanshan calibration site (WSCS) is the first in-situ field for calibration and validation (Cal/Val) of HY-2 satellite series in China. It was built in December, 2018 and began business operation in 2020.
Wanlin Zhai, Jianhua Zhu, Mingsen Lin, Chaofei Ma, Chuntao Chen, Xiaoqi Huang, Yufei Zhang, Wu Zhou, He Wang, Longhao Yan   +9 more
doaj   +1 more source

Strategies for Mitigating the Impact of Ionospheric and Tropospheric Delay on Sentinel‐1 Interferograms in Northwestern Argentina

Earth and Space Science, Volume 13, Issue 10, October 2026.
Abstract This study investigates the impact and mitigation of ionospheric and tropospheric delays on Sentinel‐1 interferograms in northwestern Argentina. The research focuses on the Santa María Basin in the south‐central Andes, a region characterized by moderate seismic deformation, monsoonal moisture supply, a steep east‐west rainfall gradient, and ...
Sofia Viotto, Bodo Bookhagen
wiley   +1 more source

Empirical model for mean temperature and assessment of precipitable water vapor derived from GPS

Geodesy and Geodynamics, 2013
The estimation of Precipitable Water Vapor (PWV) derived from Global Positioning System (GPS) data at the IGS site WUHN is assessed by comparing with PWV obtained from radiosonde data (No.57494) in Wuhan.
Tang Yanxin, Liu Lilong, Yao Chaolong
doaj   +1 more source

Variation of Global Ionospheric Scintillation and Its Effect on GPS Kinematic PPP‐AR Performance During Geomagnetic Storms in Solar Cycle 25: A Statistical Analysis

Space Weather, Volume 24, Issue 10, October 2026.
Abstract Enhanced small‐scale ionospheric irregularities during geomagnetic storms can disturb Global Navigation Satellite System (GNSS) carrier‐phase tracking and are associated with reduced stability of ambiguity‐fixed precise point positioning (PPP‐AR), but their impact on kinematic positioning remains insufficiently quantified.
Dongsheng Zhao, Qichen Zhao, Shuanglei Cui, Kefei Zhang, Longjiang Li, Wang Li, Zhongchao Shi, Craig M. Hancock   +7 more
wiley   +1 more source

A Gaussian Process Regression Framework for Slant Ionospheric Delay Interpolation and Uncertainty Quantification With Applications to PPP‐RTK

Space Weather, Volume 24, Issue 10, October 2026.
Abstract Reliable slant ionospheric information is crucial for Precise Point Positioning Real‐time Kinematic (PPP‐RTK), yet its correction in low‐latitude regions remains difficult because of ionospheric variability, observable anomalies, and insufficiently reliable uncertainty characterization.
Gaojian Zhang, Qile Zhao, Jun Tao, Yihao Jiang, Jie Zhang   +4 more
wiley   +1 more source