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Access and redistribution of ASTER data available from the LP DAAC is subject to contractual agreements between NASA and the Japanese owners of the ASTER sensor. Please see the sections below for additional information or refer to our FAQ page.
Search, Browse, and Order access is available for the following ASTER Products from LP DAAC free of charge:
|ASTER Level 1 Precision Terrain Corrected Registered At-Sensor Radiance (AST_L1T)||US and Territories|
|ASTER Global Digital Elevation Model V002 (GDEM)||Global|
|ASTER L1B: Registered Radiance at the Sensor V003||US and Territories|
|ASTER Routine Reconstructed Unprocessed Instrument Data - Expedited (AST_L1AE)||Global|
|ASTER Routine Registered Radiance at the Sensor - Expedited (AST_L1BE)||Global|
Search and Browse access is available for the following ASTER Product from LP DAAC:
|ASTER L1A Routine Reconstructed Unprocessed Instrument Data V003 (AST_L1A)||Global|
|ASTER Level 1 Precision Terrain Corrected Registered At-Sensor Radiance (AST_L1T)||Global|
NASA Approved access to ASTER L1A and all other higher level ASTER products is available for educational use, NASA-supported research, and U.S. Federal partners via an application process. Additional information is available on the application form link below.
Alternate Search, Browse, and Order (at a charge) access is available for all ASTER products except AST_L1T from:
Japan Space Systems Earth Remote Sensing Division WWW IMS interface:
NASA Approved and Educational Users of ASTER Data Received from the LP DAAC
ASTER data are subject to redistribution and citation policies. Before ordering ASTER data, users must agree to redistribute data products only to individuals within their organizations or projects of intended use.
ASTER Global DEM
ASTER Global DEM (GDEM) data are subject to redistribution and citation policies. Before ordering ASTER GDEM data, users must agree to redistribute data products only to individuals within their organizations or projects of intended use, or in response to disasters in support of the GEO Disaster Theme. When presenting or publishing ASTER GDEM data, users are required to include a citation stating, "ASTER GDEM is a product of METI and NASA."
Because there are known inaccuracies and artifacts in the data set, please use the product with awareness of its limitations. The data are provided "as is" and neither NASA nor METI/ERSDAC will be responsible for any damages resulting from use of the data.
The ASTER GDEM is a joint contribution by NASA and the Ministry of Economy, Trade and Industry of Japan (METI) to the Global Earth Observation System of Systems (GEOSS). As such, both METI and NASA desire to understand the uses of the ASTER GDEM, expressed as one the GEOSS applications themes: disasters, health, energy, climate, water, weather, ecosystems, agriculture, or biodiversity. This requires both the registration of users, and restrictions on redistribution, to capture the intended use in terms of the GEOSS themes. These few restrictions on the ASTER GDEM commenced with the public distribution of tiles on June 29, 2009 and will continue through the life of the mission. Public access to the ASTER GDEM requires registration and acknowledgement of these restrictions at both the US and Japan server locations. All registration is kept confidential and is used solely for distribution metrics and possible notification of updates to the ASTER GDEM.
The general principle is one of reversibility: If someone can recover the original x-y-z values from the new product, then that new product can NOT be re-distributed. This can also be defined as lossless recovery.
Flyover movies may be re-distributed if the final product is produced in a format that will not allow the recovery of the original data (e.g., avi, Quicktime, wmv).
Images that are created using GDEM data may be re-distributed through publications or social media applications. Papers citing such articles may be re-distributed as well.
Please see the citation page for more current information and examples: