Results 81 to 90 of about 1,220 (193)

Zenith Tropospheric Delay Forecasting in the European Region Using the Informer–Long Short-Term Memory Networks Hybrid Prediction Model

Atmosphere
Zenith tropospheric delay (ZTD) is a significant atmospheric error that impacts the Global Navigation Satellite System (GNSS). Developing a high-precision, long-term forecasting model for ZTD can provide valuable insights into the overall trends of ...
Zhengdao Yuan, Xu Lin, Yashi Xu, Jie Zhao, Nage Du, Xiaolong Cai, Mengkui Li   +6 more
doaj   +1 more source

A method for predicting short‐time changes in fine particulate matter (PM2.5) mass concentration based on the global navigation satellite system zenith tropospheric delay

Meteorological Applications, 2020
In this study, a method of haze prediction has been developed based on zenith tropospheric delay (ZTD). The relationship between ZTD and fine particulate matter (PM2.5, the main component of haze) during hazy periods in Beijing from 2015 to 2018 was ...
Min Guo, Hanwei Zhang, Pengfei Xia
doaj   +1 more source

Modeling and Forecasting the GPS Zenith Troposphere Delay in West Antarctica Based on Different Blind Source Separation Methods and Deep Learning

Sensors, 2020
Tropospheric delay is an important error source in global positioning systems (GPS), and the water vapor retrieved from the tropospheric delay is widely used in meteorological research such as climate analysis and weather forecasting.
Qingchuan Zhang, Fei Li, Shengkai Zhang, Wenhao Li   +3 more
doaj   +1 more source

Assimilation of GNSS ZTD with HARMONIE

, 2014
Póster presentado en: International Symposium on Data Assimilation 2014 celebrado en Munich, del 24 al 28 de febrero de ...
Sánchez Arriola, Jana, Thorsteinsson, Sigurdur, Lindskog, Magnus, Vedel, Henrik   +3 more
openaire   +1 more source

Analysis of the Synergistic Effect of Water Vapor, Thermodynamics, and Dynamics of the Heavy Rainfall Over Henan Province, China in July 2021

Meteorological Applications, Volume 32, Issue 5, September/October 2025.
In this study, a record‐breaking rainfall is analyzed based on the observation data and reanalysis data. The overlay of precipitation provided by both dynamic delivery from the southeast and cloud microphysical production over Zhengzhou was the main cause of the rainfall under the background of an atypical weak environmental field. ABSTRACT During July
Yang Yu, Rong Wan, Zhikang Fu
wiley   +1 more source

Riverine Isoscapes Modeling in the Yangtze River Basin, China: Insights Into Basin Processes and Source‐Water Contributions

Water Resources Research, Volume 61, Issue 9, September 2025.
Abstract The utilization of surface water isoscapes facilitates the characterization of source‐water contributions and hydrological processes within a basin. However, intricate river network topology poses significant challenges in applying this approach to large and complex basins.
Mengyao Ding, Huawu Wu, Ruiyu Lei, Hongxiang Fan, Jing Li, Kaiwen Li, Qing Zhu, Rongrong Wan, Congsheng Fu   +8 more
wiley   +1 more source

Reduction of ZTD outliers through improved GNSS data processing and screening strategies

, 2018
Though Global Navigation Satellite System (GNSS) data processing has been significantly improved over the years, it is still commonly observed that zenith tropospheric delay (ZTD) estimates contain many outliers which are detrimental to meteorological
K. Stepniak, P. Wielgosz, Katarzyna Stepniak, Pawel Wielgosz, Olivier Bock, O. Bock   +5 more
core   +1 more source

Analyzing the Tropospheric Delay Estimates on Global Navigation Satellite Systems (GNSS) with Precise Point Positioning (PPP) Services using the goGPS software

Journal of Geospatial Information Science and Engineering, 2020
The tropospheric delay is an essential source of error for positioning using the Global Navigation Satellite System (GNSS). Scientific applications of GNSS positioning such as the study of earth crust deformation and earthquake prediction require high ...
Syachrul Arief, Andrea Gatti
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

A New Grid Zenith Tropospheric Delay Model Considering Time-Varying Vertical Adjustment and Diurnal Variation over China

Remote Sensing
Improving the accuracy of zenith tropospheric delay (ZTD) models is an important task. However, the existing ZTD models still have limitations, such as a lack of appropriate vertical adjustment function and being unsuitable for China, which has a complex
Jihong Zhang, Xiaoqing Zuo, Shipeng Guo, Shaofeng Xie, Xu Yang, Yongning Li, Xuefu Yue   +6 more
doaj   +1 more source