Results 51 to 60 of about 138 (130)

Research on Applicability of GNSS PWV Data in Northeast China and Its Application in Intelligent Precipitation Prediction

Earth and Space Science, Volume 12, Issue 10, October 2025.
Abstract Atmospheric water vapor is an important factor in the formation and evolution of extreme weather events, such as heavy rainfall, typhoons, and major droughts and floods. We analyzed the applicability of precipitable water vapor (PWV) values from the Global Navigation Satellite System Meteorology (GNSS/MET) stations in northeastern China.
Yang Liu, Gen Wang, Tiening Zhang, Ping Wang, Bing Xu, Jinyi Xia   +5 more
wiley   +1 more source

TEMPO Aerosol Optical Depth and Aerosol Layer Height Retrieval Algorithm

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 18, 28 September 2025.
Abstract We developed an aerosol optical depth (AOD) and aerosol layer height (ALH) retrieval algorithm for Tropospheric Emissions: Monitoring of Pollution (TEMPO), the first geostationary sensor for monitoring air pollution over North America by enhancing state‐of‐the‐art algorithms originally developed for polar‐orbiting satellites to generate a ...
Hai Zhang, Shobha Kondragunta, Pubu Ciren   +2 more
wiley   +1 more source

ZWDX: a global zenith wet delay forecasting model using XGBoost

Earth, Planets and Space
Tropospheric delays play a crucial role for Global Navigation Satellite Systems (GNSS). They are a major error source in GNSS positioning and, at the same time, also a variable of interest in GNSS meteorology.
Laura Crocetti, Matthias Schartner, Marcus Franz Wareyka-Glaner, Konrad Schindler, Benedikt Soja   +4 more
doaj   +1 more source

Multi-Global Navigation Satellite System (GNSS) real-time tropospheric delay retrieval based on state-space representation (SSR) products from different analysis centers [PDF]

Annales Geophysicae
The troposphere plays an important role in a range of weather and various climate changes. With the development of the Global Navigation Satellite System (GNSS), the zenith tropospheric delay (ZTD) retrieval using GNSS technology has become a popular ...
W. Yao, H. Huang, X. Ma, Q. Zhang, Y. Yao, X. Lin, Q. Zhao, Y. Huang   +7 more
doaj   +1 more source

Accuracy Assessment and Rainfall Intensity Response Mechanisms in GNSS Real‐Time PPP Water Vapor Retrieval: Coupling Effects of Multi‐Source Real‐Time Products and Meteorological Conditions

Earth and Space Science, Volume 12, Issue 9, September 2025.
Abstract The Global Navigation Satellite System (GNSS) real‐time Precise Point Positioning (PPP) technology offers a highly efficient approach for atmospheric Precipitable Water Vapor (PWV) monitoring and extreme weather warning. However, its retrieval accuracy is limited by the performance of orbit and clock products, as well as the coupling effects ...
Wenliang Gao, Guigen Nie, Yu Guo, Jiaqi Shi, Shuguang Wu   +4 more
wiley   +1 more source

Effect of the 1 December 2023 Geomagnetic Storm on SPP Performance in China

Space Weather, Volume 23, Issue 9, September 2025.
Abstract Geomagnetic storms, precipitated by solar phenomena such as coronal mass ejections (CMEs), profoundly disturb the Earth's magnetic field, impacting satellite‐based navigation systems. This study analyzed the effect of a moderate geomagnetic storm on 1 December 2023, on single‐point positioning (SPP) accuracy across various Chinese regions ...
Si Chen, Fengzheng Yu, Hong Yuan, Guang Yang, Kai Fan, Peng Zhang, Yong Wei   +6 more
wiley   +1 more source

A Special Collection on Hydrogeodesy in a New Era of Satellites for Better Understanding and Management of Water Resources

Water Resources Research, Volume 61, Issue 9, September 2025.
Abstract Hydrogeodesy is the discipline that measures the Earth's solid and aquatic surfaces and gravity field from space to study water resources and their changes over time. The Special Collections on Hydrogeodesy: Understanding Changes in Water Resources Using Space Geodetic Observations, in Water Resources Research (WRR) and Geophysical Research ...
Fernando Jaramillo, Fabrice Papa, Jida Wang, Shimon Wdowinski, Georgia Destouni, James Famiglietti   +5 more
wiley   +1 more source

Methods and Evaluation of AI-Based Meteorological Models for Zenith Tropospheric Delay Prediction

Remote Sensing
Zenith Tropospheric Delay (ZTD) is a significant error source affecting the accuracy of certain space geodetic measurements. This study evaluates the performance of Artificial Intelligence (AI) based meteorological models, such as Fengwu and Pangu, in ...
Si Xiong, Jiamu Mei, Xinchuang Xu, Ziyu Shen, Liangke Huang   +4 more
doaj   +1 more source

A high-precision zenith tropospheric delay forecasting model using ET-based spatial interpolation compensation and CNN-LSTM multi-step time series prediction

Abstract Zenith Tropospheric Delay (ZTD) plays a vital role in high-precision navigation, positioning and precipitable water vapor retrieval using the Global Navigation Satellite System (GNSS). Based on the ERA5 data and hourly ZTD data provided by the Crustal Movement Observation Network of China (CMONOC) from 2011 to 2018, along with the most
Jiahao Zhang, Qin Liang, Yunqing Huang
openaire   +1 more source

An Interferometric Synthetic Aperture Radar Tropospheric Delay Correction Method Based on a Global Navigation Satellite System and a Backpropagation Neural Network: More Suitable for Areas with Obvious Terrain Changes. [PDF]

Sensors (Basel), 2023
Qiu L, Chen P, Yao Y, Chen H, Tang F, Xiong M.   +5 more
europepmc   +1 more source