TY  - Data
T1  - Glacier-level and gridded mass change in the rivers' sources in the eastern Tibetan Plateau (1970s-2000) 
A1  - Liu shiyin
A1  - Zhu yu
PY  - 2024
DA  - 2024-09-27
PB  - National Cryosphere Desert Data Center
AB  - This dataset focuses on glacier mass change in the Eastern Tibetan Plateau's (ETPR) source rivers from the 1970s to 2000. It provides data at two resolutions: high-resolution glacier-level data (30 m) and lower-resolution gridded data (0.1 and 0.5 degrees). The high-resolution data offers valuable insights for individual glaciers, including elevation change over 30 years, annual mass balance, and associated uncertainty for 13,117 glaciers. To calculate mass change, we compared digital elevation models (DEMs) derived from 1970s topographic maps (aerial photogrammetry) with the Shuttle Radar Topography Mission (SRTM) data from 2000. Co-registration, bias correction, and quality control procedures ensured data accuracy. We evaluated the DEM-based elevation differences using ICESat-2 and KH-9 data. The results demonstrate good quality, particularly at lower altitudes, similar to KH-9 data. However, high-altitude results have higher uncertainty due to limitations in capturing highly reflective snow surfaces on steep terrain using aerial photos. This dataset is a valuable resource as it covers 72% of ETPR glaciers. This comprehensiveness makes it ideal for calibrating parameters in mass balance simulations at various scales. Furthermore, the dataset can be used to assess changes in glacier hydrological effects before and after 2000.
DB  - NCDC
UR  - http://www.ncdc.ac.cn/portal/metadata/75b72d4c-58c3-493f-9a0a-323121f68347
ER  -