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ASTER L2 Surface Emissivity V004

Published by JP/METI/AIST/JSS/GDS;LP DAAC | National Aeronautics and Space Administration | Catalog Last Checked: September 08, 2026 at 11:44 PM | Dataset Last Updated: September 08, 2026
The Terra Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Surface Emissivity (AST_05) is produced using the Temperature/Emissivity Separation (TES) algorithm for the five Thermal Infrared (TIR) 90 meter bands, acquired during the day or night. The product comprises per-pixel emissivity measurements generated over land in addition to embedded metadata and quality assurance data planes. Acquisitions for AST_05 ended on January 16, 2026, at 05:10:45 UTC, when the ASTER TIR instrument was permanently turned off due to power limitations on the Terra spacecraft. More information is available in this [NASA Science News Brief](https://science.nasa.gov/blogs/science-news/2026/02/12/terra-adjusts-instrument-operations-to-extend-mission-life/). Known Issues * Level 2 products that are on the international date line/anti-meridian have incorrect bounding coordinates for the Universal Transverse Mercator (UTM) zone defined in the file metadata.

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Complete Metadata
@type dcat:Dataset
accessLevel public
bureauCode 
[
  "026:00"
]
contactPoint 
{
  "fn": "Earthdata Forum",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:earthdata-support@nasa.gov"
}
description The Terra Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Surface Emissivity (AST_05) is produced using the Temperature/Emissivity Separation (TES) algorithm for the five Thermal Infrared (TIR) 90 meter bands, acquired during the day or night. The product comprises per-pixel emissivity measurements generated over land in addition to embedded metadata and quality assurance data planes. Acquisitions for AST_05 ended on January 16, 2026, at 05:10:45 UTC, when the ASTER TIR instrument was permanently turned off due to power limitations on the Terra spacecraft. More information is available in this [NASA Science News Brief](https://science.nasa.gov/blogs/science-news/2026/02/12/terra-adjusts-instrument-operations-to-extend-mission-life/). Known Issues * Level 2 products that are on the international date line/anti-meridian have incorrect bounding coordinates for the Universal Transverse Mercator (UTM) zone defined in the file metadata.
distribution 
[
  {
    "@type": "dcat:Distribution",
    "title": "Original Metadata",
    "format": "ISO",
    "mediaType": "text/xml",
    "conformsTo": "http://www.isotc211.org/2005/gmi",
    "description": "The metadata's original source.",
    "downloadURL": "https://cmr.earthdata.nasa.gov/search/concepts/C3306858335-LPCLOUD.iso19115"
  },
  {
    "@type": "dcat:Distribution",
    "format": "BIN",
    "mediaType": "application/octet-stream",
    "downloadURL": "https://asterweb.jpl.nasa.gov/"
  },
  {
    "@type": "dcat:Distribution",
    "format": "JPEG",
    "mediaType": "image/jpeg",
    "downloadURL": "https://data.lpdaac.earthdatacloud.nasa.gov/lp-prod-public/AST_05.004/AST_05_00409082004185032_20250331151132/AST_05_00409082004185032_20250331151132.jpg"
  },
  {
    "@type": "dcat:Distribution",
    "format": "BIN",
    "mediaType": "application/octet-stream",
    "downloadURL": "https://doi.org/10.5067/ASTER/AST_05.004"
  },
  {
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    "format": "BIN",
    "mediaType": "application/octet-stream",
    "downloadURL": "https://github.com/nasa/ASTER-Data-Resources/tree/main"
  },
  {
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    "format": "PDF",
    "mediaType": "application/pdf",
    "downloadURL": "https://lpdaac.usgs.gov/documents/1319/ASTER_User_Handbook_v4.pdf"
  },
  {
    "@type": "dcat:Distribution",
    "format": "PDF",
    "mediaType": "application/pdf",
    "downloadURL": "https://lpdaac.usgs.gov/documents/2265/ASTER_User_Guide_V4_pcP80n5.pdf"
  },
  {
    "@type": "dcat:Distribution",
    "format": "PDF",
    "mediaType": "application/pdf",
    "downloadURL": "https://lpdaac.usgs.gov/documents/74/AST_05_ATBD.pdf"
  },
  {
    "@type": "dcat:Distribution",
    "format": "BIN",
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    "downloadURL": "https://search.earthdata.nasa.gov/search/granules?p=C3306858335-LPCLOUD"
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    "@type": "dcat:Distribution",
    "format": "BIN",
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  },
  {
    "@type": "dcat:Distribution",
    "format": "BIN",
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]
identifier 10.5067/ASTER/AST_05.004
keyword 
[
  "earth-science-surface-radiative-properties-land-surface-emissivity"
]
license https://www.usa.gov/government-works
modified 2026-09-08
programCode 
[
  "026:000"
]
publisher 
{
  "name": "JP/METI/AIST/JSS/GDS;LP DAAC",
  "@type": "org:Organization"
}
spatial 
"["GEODETIC", [{"NorthBoundingCoordinate": 83, "WestBoundingCoordinate": -180, "EastBoundingCoordinate": 180, "SouthBoundingCoordinate": -83}]]"
temporal 2000-03-04/2026-01-16
theme 
[
  "Earth Science"
]
title ASTER L2 Surface Emissivity V004

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