UNEP/GRID-Geneva metadata catalogue
Global Digital Elevation Model - ASTER - 1" (30 m)
The ASTER Global Digital Elevation Model (ASTER GDEM) is a joint product developed and made available to the public by the Ministry of Economy, Trade, and Industry (METI) of Japan and the United States National Aeronautics and Space Administration (NASA). It is generated from data collected from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER), a spaceborne earth observing optical instrument.
The ASTER GDEM is the only DEM that covers the entire land surface of the Earth at high resolution.
Version 2 of the ASTER GDEM is developed, employing an advanced algorithm to improve GDEM resolution and elevation accuracy and reprocessing a total of 1.5 million scene data including additional 250,000 scenes acquired after the previous release. Accuracy of this latest version is validated by the collaborate effort between Japan and the United States, which shows significant improvements over Version 1
Simple
- Date ( Publication )
- 2011-10-01T00:00:00
- Presentation form
- Digital map
- Status
- Completed
- Maintenance and update frequency
- Not planned
- Keywords ( Theme )
-
- GRID core datasets
- global
- Digital elevation
- DEM
- DTED
- Keywords ( Place )
-
- World
- Access constraints
- License
- Use constraints
- License
- Other constraints
-
GDEM data will be distributed to any users (individual/organization) who conduct work or research in 9 societal benefit areas (disaster, health, energy, climate, weather, ecosystem, agriculture, and biodiversity) defined by GEOSS (Global Earth Observation System of System).
- User Registration and Login
To obtain ASTER GDEM data, register on ASTER GDEM Distribution site.
- Conditions of ASTER GDEM use
When registering, it is required to agree to the conditions of data use(Agreement for GDEM distribution and data use), such as prohibition of secondary distribution of GDEM original data, credit title obligation in the case of displaying GDEM original data or the products produced by GDEM on Internet, scientific journal or any other publications.
- Other constraints
-
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/Japan Space Systems will be responsible for any damages resulting from use of the data.
- Spatial representation type
- Grid
- Denominator
- 10000
- Metadata language
- eng
- Character set
- UTF8
- Topic category
-
- Elevation
- Begin date
- 2000
- End date
- 2000
))
- Reference system identifier
- WGS 1984
- OnLine resource
-
GDEM ASTER 1"
(
WWW:LINK-1.0-http--link
)
Data access (Link to UNIGE ftp transfer)
- OnLine resource
-
GDEM ASTER 1"
(
WWW:LINK-1.0-http--link
)
Data access (Link to USGS provider)
- OnLine resource
-
GDEM ASTER 1"
(
WWW:LINK-1.0-http--link
)
Supplementary Information
- Hierarchy level
- Dataset
Metadata
- File identifier
- 8ef0403a-f36e-4e03-a815-2a7f95a65dda XML
- Metadata language
- eng
- Character set
- UTF8
- Date stamp
- 2016-06-27T08:16:11
- Metadata standard name
- ISO 19115:2003/19139
- Metadata standard version
- 1.0
Overviews
Geographic bounding box
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