Publication Date:
2024-06-12
Description:
Knowledge about the long-term response of High Mountain Asia (HMA) glaciers to climatic variations is paramount because of their important role in sustaining Asian river flow. Here. a satellite-based time series of glacier mass balance for seven climatically different regions across HMA since the 1960s were estimated by DEM differencing of multi-temporal optical data. The DEMs were corrected for planimetric and altimetric shifts using SRTM as a reference. Elevation dependent biases, present due to the tilt between two DEMs, were also estimated for each DEM using two-dimensional first order polynomial trend surfaces relative to the SRTM DEM. To remove outliers, we analyzed individual glacier elevation differences for each 100 m altitude bin. Considering the heterogeneity of the thickness change in glacierized terrain, outliers were removed by using an elevation dependent sigmoid function. Our study reveals a constant mass loss in all regions even in regions where glaciers were previously in balance with climate.
Keywords:
Ak-Shirak; Binary Object; Binary Object (File Size); Climate change; Event label; glacier elevation change; Glacier mass balance; Gurla_Mandhata; Langtang_sub-region; LATITUDE; Location; LONGITUDE; MULT; Multiple investigations; Muztagh_Ata; Northern_Tien_Shan; Poiqu_region; Purogangri_Ice_Cap; Western_Nyainqentanglha
Type:
Dataset
Format:
text/tab-separated-values, 16 data points
