AG100B v003

ASTER Global Emissivity Dataset 100 meter Binary


PI: Glynn Hulley, Simon Hook

Documentation

Using the Data

Citation

Related Products

The AG100B.003 dataset was decommissioned as of December 14, 2016. Users are encouraged to use the ASTER Global Emissivity Dataset 100-meter (AG100.003) dataset in HDF5.

Description

The Terra 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 Moderate Resolution Imaging Spectroradiometer (MODIS) MOD07 atmospheric profiles and the MODerate Spectral resolution TRANsmittance (MODTRAN) 5.2 radiative transfer model. This dataset is computed from all clear-sky pixels of ASTER scenes acquired from 2000 through 2008. The HDF5 version of the data are available for distribution, please see AG100 for more information.

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

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Characteristics

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 and Granule

Collection

Characteristic Description
CollectionASTER GED
DOI10.5067/Community/ASTER_GED/AG100B.003
File Size~72 MB
Temporal ResolutionMulti-Year
Temporal Extent2000-04-01 to 2008-12-31
Spatial ExtentGlobal
Coordinate SystemGeographic Latitude and Longitude
DatumWorld Geodetic System (WGS84)
File FormatBIN
Geographic Dimensions1 degree lat x 1 degree lon

Granule

Characteristic Description
Number of Science Dataset (SDS) Layers19
Columns/Rows1000 x 1000
Pixel Size100 m

Layers / Variables

SDS Name Description Units Data Type Fill Value No Data Value Valid Range Scale Factor
Emissivity mean Mean Band 10 N/A 16-bit signed integer -9999 N/A 0 to 1000 0.001
Emissivity mean Mean Band 11 N/A 16-bit signed integer -9999 N/A 0 to 1000 0.001
Emissivity mean Mean Band 12 N/A 16-bit signed integer -9999 N/A 0 to 1000 0.001
Emissivity mean Mean Band 13 N/A 16-bit signed integer -9999 N/A 0 to 1000 0.001
Emissivity mean Mean Band 14 N/A 16-bit signed integer -9999 N/A 0 to 1000 0.001
Emissivity sdev Standard Deviation Band 10 N/A 16-bit signed integer -9999 N/A -1000 to 1000 0.0001
Emissivity sdev Standard Deviation Band 11 N/A 16-bit signed integer -9999 N/A -1000 to 1000 0.0001
Emissivity sdev Standard Deviation Band 12 N/A 16-bit signed integer -9999 N/A -1000 to 1000 0.0001
Emissivity sdev Standard Deviation Band 13 N/A 16-bit signed integer -9999 N/A -1000 to 1000 0.0001
Emissivity sdev Standard Deviation Band 14 N/A 16-bit signed integer -9999 N/A -1000 to 1000 0.0001
Temperature mean Mean Kelvin 32-bit signed integer -9999 N/A 0 to 65535 0.01
Temperature sdev Standard Deviation Kelvin 16-bit signed integer -9999 N/A 0 to 65535 0.01
NDVI mean Mean N/A 16-bit signed integer -9999 N/A 0 to 100 0.01
NDVI sdev Standard Deviation N/A 16-bit signed integer -9999 N/A 0 to 100 0.01
Land Water Map Land Water Map N/A 16-bit signed integer N/A N/A 0 land1 water N/A
Observations Number of Observations Number 16-bit signed integer N/A N/A N/A N/A
Latitude Latitude Degree 32-bit floating point N/A N/A -90 to 90 N/A
Longitude Longitude Degree 32-bit floating point N/A N/A -180 to 180 N/A
ASTER GDEM ASTER Global Digital Elevation Model V002 Meters 16-bit signed integer -9999 N/A -500 to 9000 N/A

Product Quality

ASTER GED User Guide

Known Issues

Known Issues are provided in Section 4 on page 8 of the ASTER GED User Guide.


Documentation

User Guide
ASTER Science Team (JPL) Website
Joint Emissivity Database Initiative (JEDI) Web Page

Using the Data

E-Learning

Data Citation Tips from NASA’s Land Processes DAAC

Publications

View research publications that used these data

Earthdata Forum

Join the data discussion over on the Earthdata Forum.

Access Data

Tool Functionality Description Download Data

Citation

DOI: 10.5067/Community/ASTER_GED/AG100B.003

When using this data product in a publication, please include the following citations in addition to the data product citation provided above:

Hulley, G.C., Hook, S.J., Abbott, E., Malakar, N., Islam, T., and Abrams, M., 2015, The ASTER Global Emissivity Dataset (ASTER GED)—Mapping Earth’s emissivity at 100 meter spatial scale: Geophysical Research Letters, accessed October 22, 2015, at https://doi.org/10.1002/2015GL065564.

Hulley, G.C., Hughes, C.G., and Hook, S.J., 2012, Quantifying uncertainties in land surface temperature and emissivity retrievals from ASTER and MODIS thermal infrared data: Journal of Geophysical Research D - Atmospheres, v. 117, no. 23, D23113, at https://doi.org/10.1029/2012JD018506.

Hulley, G.C., and Hook, S.J., 2011, Generating consistent land surface temperature and emissivity products between ASTER and MODIS data for earth science research: IEEE Transactions on Geoscience and Remote Sensing, v. 49, no. 4, p. 1304-1315, at https://doi.org/10.1109/TGRS.2010.2063034.

Hulley, G.C., and Hook, S.J., 2009, The North American ASTER Land Surface Emissivity Database (NAALSED) version 2.0: Remote Sensing of Environment, v. 113, no. 9, p. 1967-1975, at https://doi.org/10.1016/j.rse.2009.05.005.

Hulley, G.C., Hook, S.J., and Baldridge, A.M., 2009, Validation of the North American ASTER Land Surface Emissivity Database (NAALSED) version 2.0 using pseudo-invariant sand dune sites: Remote Sensing of Environment, v. 113, no. 10, p. 2224-2233, at https://doi.org/10.1016/j.rse.2009.06.005.

Hulley, G.C., and Hook, S.J., 2008, A new methodology for cloud detection and classification with ASTER data: Geophysical Research Letters, v. 35, no. 16, L16812, at https://doi.org/10.1029/2008GL034644.

Hulley, G.C., Hook, S.J., and Baldridge, A.M., 2008, ASTER land surface emissivity database of California and Nevada: Geophysical Research Letters, v. 35, no. 13, L13401, at https://doi.org/10.1029/2008GL034507.

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