Results 71 to 80 of about 1,086,410 (154)

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

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

Adaptive neuro fuzzy inference system for Predicting sub-daily Zenith Wet Delay

, 2021
These are the full results from "ANFIS for Predicting sub-daily Zenith Wet Delay" for the selected 505 stations. They are divided into: 1- Raw time series of the 505 stations for (ZWD) from 2009 till 2019 in mat format. 2- plot of time series of the 505
Mohammed, J (via Mendeley Data), Mohammed, Jareer   +1 more
core   +1 more source

Enhancing Short-Term Zenith Wet Delay Prediction Using a Combined Data Assimilation and Conditional GAN Approach [PDF]

Accurate short-term prediction of the Zenith Wet Delay (ZWD) is essential for enhancing the precision of GNSS positioning, numerical weather prediction, and tropospheric water vapor monitoring.
Forootan, Ehsan; id_orcid, Farzaneh, Saeed, Dehvari, Masoud   +2 more
core   +1 more source

Ensemble Based Estimation of Wet Refractivity Indices Using a Functional Model Approach

Earth and Space Science
The estimation of the wet refractivity indices is crucial for applications like weather predictions or improving the accuracy of real‐time positioning techniques.
Masoud Dehvari, Saeed Farzaneh, Ehsan Forootan   +2 more
doaj   +1 more source

GNSS-Derived Path Delay: An Approach to Compute the Wet Tropospheric Correction for Coastal Altimetry

, 2010
This letter presents an innovative method for computing the wet tropospheric correction for altimetry measurements in the coastal regions, where the measurements from the microwave radiometers (MWRs) onboard altimetric missions become invalid. The method,
Luisa Bastos, Clara Lazaro, Joana Fernandes, MJ, Alexandra L Nunes, Nelson Pires, Virgilio B Mendes   +5 more
core   +1 more source

Analysis of Different Height Correction Models for Tropospheric Delay Grid Products over the Yunnan Mountains

Atmosphere
Accurate tropospheric delays are of great importance for both Global Navigation Satellite System (GNSS)-based positioning and precipitable water vapor monitoring.
Fangrong Zhou, Luohong Li, Yifan Wang, Zelin Dai, Chenchen Ding, Hui Li, Yunbin Yuan   +6 more
doaj   +1 more source

Analysis of Spatial and Temporal Characterization of GNSS Tropospheric Parameters During the Extreme Rainfall on ‘9.7’ in Hong Kong

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
On 7 September 2023, Hong Kong experienced a rare extreme rainfall due to the low-pressure trough associated with the remnants of Typhoon “Haikui,” which caused significant casualties and economic losses.
Ming Shangguan, Xiaomei Ren, Shuguang Wu, Huaiqi Ye, Wenkui Li   +4 more
doaj   +1 more source

Physical constraints for zenith wet delay estimation via inequality constrained least squares in real-time PPP

In current conventional precise point positioning (PPP) processing strategies, the tropospheric zenith wet delay (ZWD) is usually dynamically estimated as a stochastic parameter.
Hobiger, Thomas, Takamatsu, Naofumi, Wickert, Jens, He, Shengping, Brack, Andreas   +4 more
core   +1 more source

Effect of phase centre variation on tropospheric delay in PPP‐AR with low‐cost global navigation satellite systems receiver and antenna

IET Radar, Sonar & Navigation
As low‐cost global navigation satellite systems receiver and antenna become increasingly prevalent for water vapour monitoring, precise millimetre‐level characterisation of instrument biases is crucial for maintaining measurement accuracy and reliability.
Jizhong Wu, Xiaoying Wang, Hongyang Ma
doaj   +1 more source