Groundwater Storage Changes Detected from Gravity Recovery and Climate Experiment (GRACE) Data in Nile Delta Aquifer The improvement in integer ambiguity resolution with INS aiding for kinematic precise point positioning Performance evaluation of real-time global ionospheric maps provided by different IGS analysis centers Ionospheric disturbances detected during a typhoon based on GNSS phase observations: a case study for typhoon Mangkhut over Hong Kong Low-Cost Solutions for Assessment of Flash Flood Impacts Using Sentinel-1/2 Data Fusion and Hydrologic/Hydraulic Modeling: Wadi El-Natrun Region, Egypt A Novel Scheme for Merging Active and Passive Satellite Soil Moisture Retrievals Based on Maximizing the Signal to Noise Ratio Detecting Ionospheric TEC Disturbances by Three Methods of Detrending through Dense CORS During A Strong Thunderstorm Using Interquartile Range to Detect TEC Perturbations Associated with A Tropical Cyclone Crossing through The South China Sea Analysis of Atmospheric and Ionospheric Variations Due to Impacts of Super Typhoon Mangkhut (1822) in the Northwest Pacific Ocean A Digital Terrain Modeling Method in Urban Areas by the ICESat-2 (Generating precise terrain surface profiles from photon-counting technology) Electron Density Reconstruction by Ionospheric Tomography from the combination of GNSS and Upcoming LEO Constellations TDS-1 GNSS reflectometry wind geophysical model function response to GPS block types The ATL08 as a height reference for the global digital elevation models