Results 61 to 70 of about 1,086,410 (154)

The Effects of Higher-Order Ionospheric Terms on GPS Tropospheric Delay and Gradient Estimates

Remote Sensing, 2018
Atmospheric delays, e.g., ionospheric delay and tropospheric delay, are the dominant error sources for the Global Navigation Satellite System (GNSS), especially for Precise Point Positioning (PPP).
Zhiyu Zhang, Fei Guo, Xiaohong Zhang
doaj   +1 more source

Major Melting Event on the Ross Ice Shelf, Antarctica, Connected With Enhanced Atmospheric Turbulence

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract The Ross Ice Shelf (RIS) in West Antarctica experienced extensive surface melting in January 2016, driven by warm humid air transported from over the Southern Ocean. Few studies have reported increased atmospheric water vapor and turbulent mixing during this event in this region, where the availability of surface measurements is challenging ...
Dhiman R. Mondal, Pedro Elosegui, Nathra Ramrajvel, Scott Paine   +3 more
wiley   +1 more source

PPP‐RTK Atmospheric Correction Generation and Service Applicability: A Case Study During Typhoon Saola and Moderate Geomagnetic Disturbances in Hong Kong

Space Weather, Volume 24, Issue 3, March 2026.
Abstract Complex space weather, such as typhoons and solar activity, can cause heavy rainfall and ionospheric disturbances, affecting the quality of Global Navigation Satellite System (GNSS) signals. Among GNSS positioning techniques, Precise Point Positioning Real‐time Kinematic (PPP‐RTK) uses atmospheric corrections and bias products to achieve fast ...
Jiahuan Hu, Xuanyu Qu, Pan Li, Mengyu Ding, Jiadi Dai, Xiaoli Ding, Wu Chen   +6 more
wiley   +1 more source

Coastal global navigation satellite system (GNSS) ZWD

The crossovers between global 132 GNSS derived Zenith Wet Delay (ZWD), ranging and HY-2A from January 2017 to ...
Wu, Zhilu
core   +1 more source

Capturing Extreme Water Vapor and Instability With High‐Resolution GNSS Monitoring

Atmospheric Science Letters, Volume 27, Issue 2, February 2026.
This study used data from a high‐resolution Global Navigation Satellite System network (< 10 km spacing), including private stations, to analyze water vapor structure during a heavy rainfall event in Japan. The network captured localized extreme precipitable water vapor (> 70 mm) and a moist absolutely unstable layer near the humid core.
Mikiko Fujita
wiley   +1 more source

Empirical model for mean temperature for Indian zone and estimation of precipitable water vapor from ground based GPS measurements [PDF]

Annales Geophysicae, 2007
Estimation of precipitable water (PW) in the atmosphere from ground-based Global Positioning System (GPS) essentially involves modeling the zenith hydrostatic delay (ZHD) in terms of surface Pressure (Ps) and subtracting it from the corresponding ...
C. Suresh Raju, K. Saha, B. V. Thampi, K. Parameswaran   +3 more
doaj   +1 more source

Neural Network–Based Precipitable Water Vapor Estimation Integrating Ground Observations and GFS Data

Advances in Meteorology, Volume 2026, Issue 1, 2026.
Precipitable water vapor (PWV) is a critical factor in precipitation formation, the hydrological cycle, and climate change. In this study, a neural network–based PWV estimation model was established using near‐surface meteorological observation and numerical weather prediction (NWP) products.
Chenghua Xie, Pramita Mishra
wiley   +1 more source

Continental‐Scale Validation of VMF3‐ and ERA5‐Derived Precipitable Water Vapour Against Ground‐Based GNSS Observations Across Africa

Advances in Meteorology, Volume 2026, Issue 1, 2026.
Accurate precipitable water vapour (PWV) estimates are essential for weather forecasting, climate monitoring, and hydrological applications, particularly across observation‐sparse regions. This study presents a continental‐scale validation of PWV derived from the Vienna Mapping Function 3 (VMF3) tropospheric products and the fifth‐generation ECMWF ...
Samuel Osah, Akwasi A. Acheampong, Samuel A. Andam-Akorful, Samuel B. Asiedu, Charles Gameti, Rohith M. Thundathil, Benjamin Dadson, Thomas B. Botchwey, Osman M. Abukari, Yaw Poku-Gyamfi, Justine Kojo, Jonathan A. Quaye-Ballard, Collins Fosu, Isaac Dadzie, Smritijit Sen   +14 more
wiley   +1 more source

Atmospheric Water Vapor and Precipitation Coupling in Southwestern South America

Geophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract Most studies linking atmospheric water vapor and precipitation emphasize short records, tropical regions, or the Northern Hemisphere. Long‐term variability of water vapor and its coupling with precipitation remain poorly understood across strong latitudinal and climatic gradients.
Raúl Valenzuela, Jorge Jara, Cristian Martinez‐Villalobos   +2 more
wiley   +1 more source

Tropospheric Propagation Effects Extracted From ADS‐B Messages

Engineering Reports, Volume 7, Issue 12, December 2025.
This study explores the use of ADS‐B messages to estimate tropospheric effects, effectively isolating atmospheric influences from interference. The approach enables independent lower atmosphere studies and offers a cost‐free supplementary method for satellite applications, benefiting GNSS systems, especially at low elevation angles where multipath and ...
Alina‐Mihaela Badescu
wiley   +1 more source