Free ESA Data
ESA has defined a new Earth Observation Data Policy which was approved by the ESA Earth Observation Programme Board in May 2010. The new data policy applies to the ESA missions, i.e. to ERS-1, ERS-2, Envisat, GOCE, SMOS, CryoSat and future Earth Explorer missions. It is derived from the full and open access approach established in the Sentinel Data Policy.
Free Sample SAR Data
Sample ENVISAT ASAR products can be downloaded from Earth Online
Sample Radarsat-1 at Acres
UAVSAR data at ASF
Group on Earth Observations Supersites SAR data from recent disasters
Other Remote Sensing Data
USGS Disaster Response FTP Site Optical data from recent disasters
Direct Link to Landsat ftp Site
RapidEye demo products available at Blackbridge website.
WorldView-1 and WorldView-2 demo products at DigitalGlobe
QuickBird demo products at DigitalGlobe
MODIS level 1 at LAADS Web
Spot Spot3D, SpotMap, Formosat-2 and Kompsat-2 demo products at Astrium
Digital Elevation Maps
SRTM DEM (Automatically downloaded as needed by NEST)
GETASSE DEM http://www.brockmann-consult.de/beam/downloads.html (Automatically downloaded by NEST)
GSHHS Global Self-consistent, Hierarchical, High-resolution Shoreline Database
Delft Precise Orbits (Automatically downloaded as needed by NEST)
DORIS VOR/POR Orbits Contact firstname.lastname@example.org to ask for a login/password for their DORIS Orbits FTP
PRARE Orbits Contact email@example.com to ask for a login/password for their PRARE Orbits FTP
If you know of other freely available data sources, please let us know to include them here. Thanks.