USGS (U.S. Geological Survey) EROS, Sioux Falls, SD

Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER)

Contents:

Product Description
Prices
Search & Order

ASTER sample image
(Oahu, Hawaii)

Product Description

The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) is one of a number of instruments on board the Terra platform, which was launched in December 1999. ASTER provides fourteen spectral bands with 15- to 90-meter resolutions depending on the band(s). ASTER does not acquire data continuously; its sensors are activated only to collect specific scenes upon request.

The instrument consists of three separate telescopes; each provides a different spectral range and resolution. The VNIR (visible and near-infrared) sensor provides 4 bands at 15-meter resolution. The SWIR (short-wave infrared) sensor provides 6 bands at 30-meter resolution. The TIR (thermal infrared) sensor provides 5 bands at 90-meter resolution. The swath width for all sensors is 60 kilometers.

ASTER data distributed from the Land Processes Distributed Active Archive Center is available in the Universal Transverse Mercator (UTM) projection, with a resampling method of cubic convolution for daytime scenes and nearest neighbor for nighttime scenes. Files are in the HDF-EOS or GeoTIFF format with the exception of ASTER Level-3 products, which are available in GeoTIFF only.

The following products and services are available:
- On-Demand Products are generated using corrected and updated ASTER Level-1A data to create the Level-1B data set, which in turn are used as the input for generating all the higher-level products except the ASTER DEM. (Level-1A granules are used to generate the ASTER DEM products.) All of these higher-level products are available upon request, subject to the appropriate band availability:
  - Level-2 On-Demand Decorrelation Stretch (VNIR, SWIR & TIR)
  - Level-2 Brightness Temperature (TIR)
  - Level-2 Surface Emissivity (TIR)
  - Level-2 Surface Reflectance (VNIR & SWIR)
  - Level-2 Surface Reflectance Crosstalk-Corrected (VNIR & SWIR)
  - Level-2 Surface Kinetic Temperature (TIR)
  - Level-2 Surface Radiance (VNIR, SWIR & TIR)
  - Level-2 Surface Radiance Crosstalk-Corrected (VNIR & SWIR)
  - Level-2 Polar Surface and Cloud Classification (VNIR)
  - Level-3 ASTER DEM; created from Level 1A data (VNIR)
  - Level-3 ASTER Orthorectified; created from Level 1A data (VNIR)
  - Level-3 ASTER DEM and Orthorectified; created from Level 1A data (VNIR)
  Product Descriptions
- ASTER Scene Requests are also available because ASTER data is not acquired on a continuous basis, and the sensors collect specific scenes as tasked. Authorized investigators can request the acquisition of a particular scene(s), although each request is subject to approval by the ASTER Science Team. For information on obtaining ASTER request privileges, see the ASTER User Authorization site.

Additional Information:

Prices

ASTER Product	Price (FTP)	Price (DVD)
ASTER Level 1A	$80	$91
ASTER Level 1B	$80	$91
AST_04	$80	$91
AST_05	$80	$91
AST_06VD	$80	$91
AST_06SD	$80	$91
AST_06TD	$80	$91
AST_07	$80	$91
AST_07XT	$80	$91
AST_08	$80	$91
AST_09	$80	$91
AST_09XT	$80	$91
AST_09T	$80	$91
AST13POL	$80	$91
AST14DEM	$80	$91
AST14OTH	$80	$91
AST14DMO	$160	$182

Search & Order

ASTER does not acquire data continuously; its sensors are activated to collect specific scenes upon request. Since data collection is scheduled from scene requests, some locations may not be available. Users will need to run a search to determine if a particular location has been acquired.

Standard Products, On-Demand Products	WIST, GloVis
Standard Products (Level 1B only)	Data Pool

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U.S. Department of the Interior \| U.S. Geological Survey URL: http://eros.usgs.gov/ Page Contact Information: custserv@usgs.gov Page Last Modified: August 22, 2006