Secular Trends in Global Tides derived from Satellite Radar Altimetry

Abstract

An increasing number of studies are devoted to mapping and understanding secular changes in the tides. However, most of these studies rely on sea level observations from tide gauges that are mainly restricted to coastal and shelf regions. Hence, observed changes in tides could be dominated by local processes and the large-scale patterns remain unclear. Obtaining the global picture of long-term changes in tides would contribute to a better understanding of the drivers behind secular changes in tides. Understanding secular changes in tides may result in better identification and prediction of any consequences for coastal environments such as flooding (Li et al., 2021), salt intrusion (Hinton, 2000), or altered estuarine dynamics (Khojasteh et al., 2021).