Estimation of Evapotranspiration in the Yellow River Basin from 2002 to 2020 Based on GRACE and GRACE Follow-On Observations

Evapotranspiration (ET) plays an important role in the hydrological cycle of river basins. Studying ET Yellow River Basin (YRB) is greatly significant for scientific management water resources. Here, we made full use advantages Gravity Recovery and Climate Experiment (GRACE) GRACE Follow-On (GRACE-FO) gravity satellites monitoring large-scale changes to calculate terrestrial storage anomaly (TWSA) flux YRB from May 2002 June 2020. Furthermore, combined with flux, precipitation, runoff data, was calculated based on budget equation then compared other traditional products. The mutation annual mean identified by Mann–Kendall trend test method, seasonal interannual variations were explored. closely related precipitation. Annual exhibited a sudden change 2011, insignificant downward 2003 2010, followed increasing 2011 2019, particularly after 2016. Compared methods products, estimated GRACE/GRACE-FO observations provides new way effectively obtain continuous reliable data wide range