COMBINED PATCH-WISE MINIMAL-MAXIMAL PIXELS REGULARIZATION FOR DEBLURRING

We released a dataset (IC2-GDEM) by directly refining the ASTER GDEM elevation with ICESat-2 altimeter data. It presents a superior elevation quality compared to ASTER GDEM at a global scale. It can promote seamless integration with the historical datasets of ASTER GDEM, which is essential for longitudinal studies of long-term environmental changes, etc. impacts. It can be as a new complementary data source to other DEMsfor leading to 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.