Results 21 to 30 of about 150 (129)

A New Method for Estimating Tropospheric Zenith Wet-Component Delay of GNSS Signals from Surface Meteorology Data

Remote Sensing, 2020
A new concept is proposed for estimating the zenith wet delay (ZWD) and atmospheric weighted average temperature by inputting the temperature, total pressure, and specific humidity from surface weather data.
Pengfei Xia, Jingchao Xia, Shirong Ye, Caijun Xu   +3 more
doaj   +1 more source

Regression models for predicting daily IGS zenith tropospheric delays in West Africa: Implication for GNSS meteorology and positioning applications

Meteorological Applications, 2021
The ability to precisely and accurately model and predict tropospheric delay is essential for precise global navigation satellite system (GNSS) and meteorological applications.
Samuel Osah, Akwasi A. Acheampong, Collins Fosu, Isaac Dadzie   +3 more
doaj   +1 more source

Use of GNSS Tropospheric Delay Measurements for the Parameterization and Validation of WRF High-Resolution Re-Analysis over the Western Gulf of Corinth, Greece: The PaTrop Experiment

Remote Sensing, 2021
In the last thirty years, Synthetic Aperture Radar interferometry (InSAR) and the Global Navigation Satellite System (GNSS) have become fundamental space geodetic techniques for mapping surface deformations due to tectonic movements.
Nikolaos Roukounakis, Dimitris Katsanos, Pierre Briole, Panagiotis Elias, Ioannis Kioutsioukis, Athanassios A. Argiriou, Adrianos Retalis   +6 more
doaj   +1 more source

Retrieving Precipitable Water Vapor from Real-Time Precise Point Positioning Using VMF1/VMF3 Forecasting Products

Remote Sensing, 2021
Real-time precise point positioning (RT-PPP) has become a powerful technique for the determination of the zenith tropospheric delay (ZTD) over a GPS (global positioning system) or GNSS (global navigation satellite systems) station of interest, and the ...
Peng Sun, Kefei Zhang, Suqin Wu, Moufeng Wan, Yun Lin   +4 more
doaj   +1 more source

Short-term precipitation forecasting based on the data from GNSS observation

Shui kexue jinzhan, 2016
The Precipitable Water Vapor (PWV) derived from Global Navigation Satellite System (GNSS) can be used for the study of precipitation forecasting, but it needs the support of ground measured meteorological data. In order to solve this problem, a method of
YAO Yibin, ZHAO Qingzhi, LI Zufeng, HE Yadong   +3 more
doaj   +1 more source

Handling Method for Outages of IGS Real-Time Service (RTS) in GNSS Real-Time Sensing of Atmospheric Water Vapor

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
The continuity and accuracy of real-time (RT) global satellite navigation system (GNSS) sensing of atmospheric water vapor can be seriously affected by a lack of connectivity.
HaoJun Li, XiaoMing Li, Qi Kang
doaj   +1 more source

Investigating the Inter-Relationships among Multiple Atmospheric Variables and Their Responses to Precipitation

Atmosphere, 2023
In this study, a comprehensive investigation into the inter-relationships among twelve atmospheric variables and their responses to precipitation was conducted. These variables include two Global Navigation Satellite Systems (GNSS) tropospheric products,
Haobo Li, Suelynn Choy, Safoora Zaminpardaz, Brett Carter, Chayn Sun, Smrati Purwar, Hong Liang, Linqi Li, Xiaoming Wang   +8 more
doaj   +1 more source

Accuracy Analysis of Real-Time Precise Point Positioning—Estimated Precipitable Water Vapor under Different Meteorological Conditions: A Case Study in Hong Kong

Atmosphere, 2023
Precipitable water vapor (PWV) monitoring with real-time precise point positioning (PPP) is required for the improved early detection of increasingly common extreme weather occurrences. This study takes Hong Kong as the research object.
Ying Xu, Lin Ma, Fangzhao Zhang, Xin Chen, Zaozao Yang   +4 more
doaj   +1 more source

Assessing the Impact of GNSS ZTD Data Assimilation into the WRF Modeling System during High-Impact Rainfall Events over Greece

Remote Sensing, 2020
The derivation of global navigation satellite systems (GNSSs) tropospheric products is nowadays a state-of-the-art technique that serves both research and operational needs in a broad range of applications in meteorology.
Christos Giannaros, Vassiliki Kotroni, Konstantinos Lagouvardos, Theodore M. Giannaros, Christos Pikridas   +4 more
doaj   +1 more source

MSWD: A Hybrid Machine‐Learning Framework for Slant Wet Delay Modeling

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 12, 28 June 2026.
Abstract Space geodetic techniques such as Global Navigation Satellite Systems (GNSS) and Very Long Baseline Interferometry (VLBI) are limited by direction‐dependent tropospheric delays, with slant wet delay (SWD) being the most variable component and a major error source.
Zhenyi Zhang, Benedikt Soja
wiley   +1 more source