Fig. 1

Samples of ICESat-2 and GEDI over the four lakes and their hydrological stations: a Chaohu Lake (8 November 2020 for ICESat-2; 3 May 2020 for GEDI); b Hongze Lake (8 March 2019 for ICESat-2; 20 July 2020 for GEDI); c Gaoyou Lake (23 December 2018 for ICESat-2; 2 December 2019 for GEDI); d Taihu Lake (18 April 2019 for ICESat-2; 5 July 2020 for GEDI)