Results 51 to 60 of about 1,084 (164)
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 +6 more
doaj +1 more source
A methodology to compute GPS slant total delays in a numerical weather model [PDF]
, 2012 A numerical algorithm based on Fermat's Principle was developed to simulate the propagation of Global Positioning System (GPS) radio signals in the refractivity field of a numerical weather model.
Bender, Michael +6 more
core +1 more source
Satellite Geodesy Reveals Shallow, Transient Magma Intrusions at Sotará Volcano, Colombia
Journal of Geophysical Research: Solid Earth, Volume 130, Issue 12, December 2025.Abstract Sotará is a little‐known andesitic‐dacitic stratovolcano in southwestern Colombia. Although there are no recorded historical eruptions, the volcano shows clear evidence of geothermal activity, deformation, and volcano‐tectonic seismicity. Its remote location and rugged terrain pose challenges for access and routine monitoring.
Rosa Alpala +5 more
wiley +1 more source
EFFECTS OF OCEAN TIDE MODELS ON GNSS-ESTIMATED ZTD AND PWV IN TURKEY [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015 Global Navigation Satellite System (GNSS) observations can precisely estimate the total zenith tropospheric delay (ZTD) and precipitable water vapour (PWV) for weather prediction and atmospheric research as a continuous and all-weather technique. However,
G. Gurbuz, S. Jin, C. Mekik
doaj +1 more source
Frontiers in Earth Science, 2022 The assimilation of observations in limited area models (LAMs) allows to find the best possible estimate of a region’s meteorological state. Water vapor is a crucial constituent in terms of cloud and precipitation formation. Its highly variable nature in
Andreas Wagner +6 more
doaj +1 more source
VLBI-derived troposphere parameters during CONT08 [PDF]
, 2011 Time-series of zenith wet and total troposphere delays as well as north and east gradients are compared, and zenith total delays (ZTD) are combined on the level of parameter estimates.
Boehm, J. +10 more
core +2 more sources
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 +5 more
wiley +1 more source
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
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 +4 more
wiley +1 more source
Comparison of GPS slant wet delays acquired by different techniques [PDF]
, 2012 This paper discusses the quality of slant wet delays (SWD) computed from GPS measurements. The SWDs are generally used as input data for GPS tomography, which allows the three-dimensional reconstruction of water vapour distribution in the atmosphere ...
Douša, Jan +2 more
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