ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiameter) GDEM (Global Digital Earth Model)

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Title:Main Title: ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiameter) GDEM (Global Digital Earth Model)
Description:Abstract: I. ASTER ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiameter) is an imaging instrument built by METI and operates on the NASA Terra platform. Images are acquired in 14 spectral bands using three separate telescopes and sensor systems. These include three visible and nearinfrared (VNIR) bands with a spatial resolution of 15 meters (m), six shortwave- infrared (SWIR) bands with a spatial resolution of 30m, and five thermal infrared (TIR) bands that have a spatial resolution of 90 m. VNIR Band3 also is acquired using a backward-looking telescope, thus providing along-track stereo coverage from which high-quality digital elevation models (DEMs) are produced with 30m postings, and have Z accuracies generally between 10 m and 25 m root mean square error (RMSE). II. ASTER GDEM The methodology used to produce the ASTER GDEM involved automated processing of the entire 1.5-million-scene ASTER archive, including stereocorrelation to produce 1,264,118 individual scene-based ASTER DEMs, cloud masking to remove cloudy pixels, stacking all scene-based DEMs, removing residual bad values and outliers, averaging selected data to create final pixel values, and then correcting residual anomalies before partitioning the data into 1°-by-1° tiles. The ASTER GDEM (Global Digital Earth Model) is being distributed by METI and NASA through the Earth Remote Sensing Data Analysis Center (ERSDAC) and the NASA Land Processes Distributed Active Archive Center (LP DAAC) at no charge to users worldwide as a contribution to the Global Earth Observing System of Systems (GEOSS). It is packaged in 1°-by-1° tiles, and covers land surfaces between 83°N and 83°S with estimated accuracies of 20 meters at 95 % confidence for vertical data and 30 meters at 95 % confidence for horizontal data. The ASTER GDEM is in geotiff format with geographic lat/long coordinates and a 1 arc-second (30m) grid.
Responsible Party
Creator:Earth Remote Sensing Data Analysis Center (ERDSAC) (Owner)
Contributor:Guido Waldhoff (Contact Person)
Publisher:CRC/TR32 Database (TR32DB)
Publication Year:2010
Topic
TR32 Topic:Topography
Related Subproject:Z1
Subjects:Keywords: Turbulent Fluxes, Temperature, CO2, Wind Turbulence
GEMET Thesaurus entries: remote sensing, raster
Geogr. Information Topic:Elevation
File Details
Filename:ASTER_GDEM.zip
Data Type:Image - Image
Size:1 Datasets
File Size:Unknown
Dates:Issued: 06.08.2010
Created: 29.06.2009
Mime Type:application/zip
Data Format:TIFF
Language:German
Status:Completed
Constraints
Download Permission:Free
General Access and Use Conditions:Access and use only for CRC/TR32 members.
Access Limitations:Access and use only for CRC/TR32 members.
Licence:[TR32DB] Data policy agreement
Geographic
Specific Information - Geodata
Lineage:Complete
Spatial Resolution:Resolution: 30 m
Spatial Representation:Grid
Presentation Form:Digital Image
Reference System:WGS 84 / UTM zone 32N (32632)
Scope:Dataset
Initiative Type:Collection
Metadata Details
Metadata Creator:Guido Waldhoff
Metadata Created:01.09.2010
Metadata Last Updated:14.04.2021
Subproject:Z1
Funding Phase:1
Metadata Language:English
Metadata Version:V50
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Metadata Downloads:7
Dataset Downloads:3
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