I am looking for a rather large DEM --- on the trillion cell scale --- to run some tests on.
So far, I have found:
- 200 billion cells: The SRTM Global Dataset 30m DEM
- 120 billion cells: The National Elevation Dataset 10m DEM (higher resolutions have incomplete spatial coverage)
- 70 billion cells: The PAMAP Lidar 1m DEM
Are there any publically-available DEMs, which are not stored in an Arc Geodatabase format, which meet or exceed the 1 trillion cell threshold?