%0 Dataset
%T Glacier scale and grid scale quality changes in river source areas of the eastern Qinghai Tibet Plateau (1970-2000)
%J National Cryosphere Desert Data Center
%I National Cryosphere Desert Data Center(www.ncdc.ac.cn)
%U http://www.ncdc.ac.cn/portal/metadata/895cbd3a-5914-442c-9756-622352fa4d85
%W NCDC
%R 10.11888/Cryos.tpdc.272884. 
%A 
%K Qinghai Tibet Plateau;glaciers;elevation changes
%X This dataset provides a nearly complete glacier mass change dataset from 2000 years ago, covering approximately 70% of the total glacier area in the study area. This comprehensive glacier inventory provides valuable insights into the spatial heterogeneity of glacier changes in the region. Grid based products, combined with published achievements, have constructed a quality balance record of nearly 50 years, which can be used for parameter calibration in hydrological and energy balance simulations, and to evaluate the contribution of mountain glacier melting to sea level rise.    From the 1970s to 2000, the overall mass balance value of the eastern Qinghai Tibet Plateau Tagla Prala region was -0.30 ± 0.12. Small glaciers exhibit the most significant negative mass changes. The glacier mass balance shows a significant latitude gradient, indicating that the mass loss in the southern region increases.    Compared to early topographic map products, this dataset achieves a more comprehensive analysis of glacier mass balance uncertainty by incorporating stable regional data, addressing the uncertainty of altitude measurement heteroscedasticity, and considering the previously overlooked uncertainty of long-range correlation in altitude measurement. In depth analysis reveals that the generation process of contour lines and the increase in uncertainty in steep slope areas are the main driving factors for quality budget uncertainty. These findings emphasize the need for rigorous assessment and mitigation of these sources of uncertainty when interpreting glacier mass balance estimates, especially in complex terrain areas.