High-resolution and global baseline digital elevation models covering the Langtang–Trishuli cascade corridor — Copernicus GLO-30 & NASA High Mountain Asia
- Outcome
- Completed
- Search date
- Source
- European Space Agency (ESA) & NASA NSIDC
- Reference
- RUN-20260915-050
- Aim
- Identify and catalog foundational baseline digital elevation models essential for terrain reconstruction, slope stability analysis, and hydraulic flood routing along the corridor.
- Source and interface
- European Space Agency (ESA) & NASA NSIDC — Copernicus Data Space Ecosystem / OpenTopography / NSIDC
- Search method
- Query Copernicus DEM GLO-30 (30m) tile services for N28E085 and N27E085; query NASA NSIDC for High Mountain Asia 8m DEM mosaics (Shean et al.) covering the Langtang and Trishuli valleys. Retrieve authoritative product URLs and metadata.
- Criteria
Spatial extent WGS84 [84.3976, 27.7320, 85.5508, 28.3500]. Baseline pre-event epochs. - Coverage
- Continuous elevation surfaces covering the entire elevation gradient from 7,234 m (Langtang Lirung) to 200 m (Devghat confluence).
- Stopping rule
- Exhaust official tile distributions and persistent data DOIs for the spatial corridor.
- Result
2 foundational baseline DEM resources recovered across 4 assets: Copernicus DEM GLO-30 tiles and NASA HMA 8m DEM mosaic with uncertainty layer.
Resource links below show the completed assessment outcomes. The search result above records discovery at the search date.
Copernicus DEM GLO-30 — 30 m digital surface model tiles covering the central Nepal–Tibet corridor
High Mountain Asia 8 m Digital Elevation Model Mosaics — Langtang–Trishuli corridor (Shean et al.)