Bhattacharya, Atanu; Bolch, Tobias; Mukherjee, Kriti; King, Owen; Menounos, Brian; Kapitsa, Vassiliy; Neckel, Niklas; Yang, Wei; Yao, Tandong (2021): Glacier elevation changes data in the High Mountain Asia derived from multi-temporal digital elevation models since the 1960s [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.933924
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Abstract:
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.
Related to:
Bhattacharya, Atanu; Bolch, Tobias; Mukherjee, Kriti; King, Owen; Menounos, Brian; Kapitsa, Vassiliy; Neckel, Niklas; Yang, Wei; Yao, Tandong (2021): High Mountain Asian glacier response to climate revealed by multi-temporal satellite observations since the 1960s. Nature Communications, 12(1), https://doi.org/10.1038/s41467-021-24180-y
Funding:
Swiss National Science Foundation (SNF), grant/award no. 177652: Estimation of global glacier mass changes
Coverage:
Median Latitude: 34.302375 * Median Longitude: 82.904875 * South-bound Latitude: 28.251000 * West-bound Longitude: 75.178000 * North-bound Latitude: 43.013000 * East-bound Longitude: 90.585000
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Bhattacharya, Atanu | |||
| 2 | Location | Location | Bhattacharya, Atanu | Region | ||
| 3 | LATITUDE | Latitude | Bhattacharya, Atanu | Geocode | ||
| 4 | LONGITUDE | Longitude | Bhattacharya, Atanu | Geocode | ||
| 5 | Binary Object (File Size) | Binary (Size) | Bytes | Bhattacharya, Atanu | ||
| 6 | Binary Object | Binary | Bhattacharya, Atanu |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Basic curation (CurationLevelB)
Size:
16 data points