ASTER User's Guide - Aster - NASA
ASTER User's Guide - Aster - NASA
ASTER User's Guide - Aster - NASA
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<strong>ASTER</strong> Users Handbook<br />
9.0 <strong>ASTER</strong> Higher-Level Data Products Ordering Mechanism<br />
All the higher-level (Level-2) <strong>ASTER</strong> geophysical products (except absolute and relative DEMs)<br />
are produced using an <strong>ASTER</strong>-L1B as its input. The routinely-produced on-demand products<br />
including their Long and Short names are:<br />
Routinely-Produced Level-2 Products<br />
1. <strong>ASTER</strong> L2 Decorrelation Stretch (VNIR) AST_06V<br />
2. <strong>ASTER</strong> L2 Decorrelation Stretch (SWIR) AST_06S<br />
3. <strong>ASTER</strong> L2 Decorrelation Stretch (TIR) AST_06T<br />
You can search, browse and order these products from the EOS Data Gateway.<br />
On-Demand Level-2 Products<br />
1. <strong>ASTER</strong> On-Demand L2 Decorrelation Stretch (VNIR) AST_06VD<br />
2. <strong>ASTER</strong> On-Demand L2 Decorrelation Stretch (SWIR) AST_06SD<br />
3. <strong>ASTER</strong> On-Demand L2 Decorrelation Stretch (TIR) AST_06TD<br />
4. <strong>ASTER</strong> On-Demand L2 Brightness Temperature at the Sensor AST_04<br />
5. <strong>ASTER</strong> On-Demand L2 Emissivity AST_05<br />
6. <strong>ASTER</strong> On-Demand L2 Surface Reflectance (VNIR & SWIR) AST_07<br />
7. <strong>ASTER</strong> On-Demand L2 Surface Kinetic Temperature AST_08<br />
8. <strong>ASTER</strong> On-Demand L2 Surface Radiance (VNIR & SWIR) AST_09<br />
9. <strong>ASTER</strong> On-Demand L2 Surface Radiance (TIR) AST_09T<br />
10. <strong>ASTER</strong> On-Demand L2 Polar Surface & Cloud Classification AST13POL<br />
You can order these on-demand products using the <strong>ASTER</strong> On-Demand Gateway. You will be<br />
led there through a link (Order higher-level product) on the EDG’s Level-1B granules search<br />
page next to the granule-listing column. This site allows you to select a product (such as<br />
reflectance), and either accept the default parameters, or customize by selecting appropriate<br />
alternative options. There is a brief on-line tutorial for beginning users on how to place an order<br />
for <strong>ASTER</strong> on-demand products: http://edcdaac.usgs.gov/asterondemand/aod_tutorial.html<br />
On-Demand Level-3 Products<br />
1. <strong>ASTER</strong> Digital Elevation Model (DEM) AST14DEM<br />
The only Level-3 products generated from an <strong>ASTER</strong> L1A data set are:<br />
• An Absolute Digital Elevation Model (DEM). This product requires you to submit<br />
Ground Control Points (GCPs) for your area of interest. To accomplish this, you must<br />
first order the L1A data, locate your GCP’s on both the 3N and 3B images, and supply<br />
these pixel coordinates along with the GCP coordinate locations.<br />
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