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AG1km V003

10.5067/Community/ASTER_GED/AG1km.003
ASTER Global Emissivity Dataset 1-kilometer
AG1km

Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Global Emissivity Dataset (GED) land surface temperature and emissivity (LST&E) data products are generated using the ASTER Temperature Emissivity Separation (TES) algorithm with a Water Vapor Scaling (WVS) atmospheric correction method using MODIS MOD07 atmospheric profiles and the MODTRAN 5.2 radiative transfer model. This dataset is computed from all clear-sky pixels of ASTER scenes acquired from 2000 – 2008. There is also a binary version of the AG1km data, please see AG1kmB for more information.

The National Aeronautics and Space Administration’s (NASA) Jet Propulsion Laboratory (JPL), California Institute of Technology, developed the ASTER GED product.

Improvements/Changes from Previous Versions

  • Includes data for the entire globe.
  • Includes the mean climatology of all ASTER data for the specific temporal extent.

Collection

Characteristic Description
Temporal Granularity Static
Temporal Extent 2000 - 2008
Spatial Extent Global
File Size ~0.46 MB
Coordinate System Geographic Latitude and Longitude
Datum WGS84
File Format HDF5
Geographic Dimensions 1° x 1°
Total Number of Tiles 24,873
Total Size ~11.17 GB

 

Granule

Characteristic Description
Number of Science Dataset (SDS) Layers 19
Columns/Rows 1000 x 1000
Pixel Size 1 km

 

Data Layer Characteristics

SDS Name Description Units Data Type Fill Value Valid Range Scale Factor
ASTER GDEM

ASTER Global Digital Elevation Model V002

Meters 16-bit signed integer

-9999

-500 to 9000

N/A
Emissivity mean 

Mean Band 10 

N/A 16-bit signed integer

-9999

0 to 1000

0.001
Emissivity mean

Mean Band 11 

N/A 16-bit signed integer

-9999

0 to 1000

0.001
Emissivity mean

Mean Band 12

N/A 16-bit signed 

-9999

0 to 1000

0.001
Emissivity mean

Mean Band 13 

N/A 16-bit signed integer

-9999

0 to 1000

0.001
Emissivity mean 

Mean Band 14 

N/A 16-bit signed integer

-9999

0 to 1000

0.001
Emissivity sdev

Standard Deviation Band 10

N/A 16-bit signed integer

-9999

-1000 to 1000

0.0001
Emissivity sdev

Standard Deviation Band 11

N/A 16-bit signed integer

-9999

-1000 to 1000

0.0001
Emissivity sdev

Standard Deviation Band 12

N/A 16-bit signed integer

-9999

-1000 to 1000

0.0001
Emissivity sdev

Standard Deviation Band 13

N/A 16-bit signed integer

-9999

-1000 to 1000

0.0001
Emissivity sdev

Standard Deviation Band 14

N/A 16-bit signed integer

-9999

-1000 to 1000

0.0001
Latitude

Latitude

Decimal Degrees 32-bit floating point

N/A

-90 to 90

N/A
Longitude

Longitude

Decimal Degrees 32-bit floating point

N/A

-180 to 180

N/A
Land-Water Map

Land Water Map

N/A 16-bit unsigned integer

N/A

0 land 1 water

N/A
NDVI mean

Mean

N/A 16-bit signed integer

-9999

0 to 100

0.01
NDVI sdev

Standard Deviation

N/A 16-bit signed integer

-9999

0 to 100

0.01
Observations

Number of Observations

Number per pixel 16-bit unsigned integer

N/A

N/A

N/A
Temperature mean

Mean

Kelvin 32-bit signed integer

-9999

0 to 65535

0.01
Temperature sdev

Standard Deviation

Kelvin 16-bit signed integer

-9999

0 to 65535

0.01

 

 

Product Quality

ASTER GED User Guide

 

Known Issues

ASTER GED User Guide
Section 4, starting on page 8

AG1km
PI Name: 
Glynn Hulley, Simon Hook
Decommissioned: 
False