ASTER Global Digital Elevation Model (GDEM version 3)

Data Type: Digital elevation model
Spatial Resolution: 1-arc-second (~30m)
Source: National Aeronautics and Space Administration (NASA) and Japan’s Ministry of Economy, Trade, and Industry (METI)
Publication Date: 2000-2013
Urban Applicability: Good

A global digital elevation model (DEM) dataset for all land areas on Earth.

How to access: 

Data can be downloaded as a raster (GeoTIFF).