Editorial note for the geodesy and geodynamics journal special issue contemporary research in geodynamics and earth tides - Selection from the 19th international symposium on geodynamics and earth tides, 2021, Wuhan, China

Modern geodetic technologies such as high-precision ground gravity measurement, satellite gravity measurement, global navigation satellite system, remote sensing, etc. provide rich observation data for monitoring various geodynamic processes on the of the global earth and on its surface surface and inside. The 19th International Symposium on Geodynamics and Earth Tides brought together scientific researchers from 26 countries around the world, shared the application of various measurements in different geoscience issues, covering Earth tidal deformation, oceanic and atmospheric loading effects, earthquake cycle, hydrology, Earth rotation changes, etc., and provided a very valuable exchange platform for global peers. Keywords: Earth tides, Gravity, Earthquake, Earth rotation, Hydrology