• Energy Research

Este conjunto de datos proporciona valores atípicos de cambio de elevación (en metros) eliminados y llenos de huecos de los glaciares en el Muztagh Ata y el macizo occidental de Nyainqentanglha en la Alta Montaña de Asia de 2020 a 2022. Cet ensemble de données fournit des valeurs aberrantes de changement d'altitude (en mètres) des glaciers dans le massif du Muztagh Ata et du Nyainqentanglha occidental en Asie de haute montagne de 2020 à 2022. This data set provides outlier removed, gap filled elevation change values (in meters) of the glaciers in the Muztagh Ata and Western Nyainqentanglha massif in High Mountain Asia from 2020 to 2022. توفر مجموعة البيانات هذه قيم تغيير الارتفاع المملوءة بالفجوة (بالأمتار) للأنهار الجليدية في جبل مزطغ آتا وغرب نياينكينتانغلها في آسيا الجبلية العالية من عام 2020 إلى عام 2022.

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.