COMBINED PATCH-WISE MINIMAL-MAXIMAL PIXELS REGULARIZATION FOR DEBLURRING

We refined the Advanced Spaceborne Thermal Emission and Reflection Radiometer Global Digital Elevation Model (ASTER GDEM) with Ice, Cloud, and Land Elevation Satellite 2 data to release a new dataset (IC2-GDEM). It has superior global elevation quality to ASTER GDEM. Its seamless integration with historical ASTER GDEM datasets is essential for longitudinal environmental studies. As a complementary data source to other GDEMs, it enables more reliable and comprehensive scientific discoveries.

To better understand the glacier melting features in the SETP, multisource satellite observations including ASTER DEM, ICESat, ICESat-2 and CryoSat-2 are used in this study. We found the glacier melting rate of the entire SETP is during 2000–2022. And the glacier melting has accelerated at a rate of 31.2 % in the recent decade. A comprehensive comparison among the related existing studies revealed that our estimates have a finer temporal scale and less estimation uncertainty.