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aster-storage.md

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Container information

Data are stored in blobs in the West Europe Azure region, in the following blob container:

https://astersa.blob.core.windows.net/aster

Scene names

Within the COG container, each scene corresponds to a prefix, named according to:

images/L1T/[year]/[month]/[day]/[scene name]

[year], [month], and [day] are the four-digit year and two-digit month/day.

scene name follows the ASTER naming convention:

AST_L1TVVVYYYYMMDHHMMSSyyyymmddhhmmssid

  • VVV is always "003", for ASTER collection 003
  • MMDDYYYYHHMMSS is the acquisition month, day, year, hour, minute, second
  • mmddyyyyhhmmss is the processing month, day, year, hour, minute, second
  • id is a unique acquisition identifier.

For example:

AST_L1T_00306042003004247_20150428235500_35366

Putting that all together, a complete scene prefix for an ASTER image from June 4, 2003 looks like:

https://astersa.blob.core.windows.net/aster/images/L1T/2003/06/04/AST_L1T_00306042003004247_20150428235500_35366

Image files

All scenes contain one or more of the following files (not all bands are present in all ASTER scenes), separated from the prefix with ".":

  • SWIR.tif (ASTER shortwave infrared bands 4, 5, 6, 7, 8, and 9; at 30m resolution)
  • VNIR.tif (ASTER visible and near-infrared bands 1, 2, and 3; at 15m resolution)
  • TIR.tif (ASTER thermal infrared bands 10, 11, 12, 13, and 14; at 90m resolution)

So, for example, the VNIR COG file for the example scene above is available at:

https://astersa.blob.core.windows.net/aster/images/L1T/2003/06/04/AST_L1T_00306042003004247_20150428235500_35366.VNIR.tif