Gravity variations determined from GRACE and GRACE-FO monthly solutions for analyzing water mass changes in the Aral SeaLorant Foldvary, Victor Statov, Nizamatdin Mamutov, Sanjar Khikmatullaev and Muxammadyusuf ErgashevE3S Web Conf., 386 (2023) 04001DOI: https://doi.org/10.1051/e3sconf/202338604001