Information for ASTER images: Jordan
Advanced Spaceborne Thermal Emission and Reflection Radiometer
Created by Erin DiMaggio
Email:
Last updated 6/20/05
There are three folders:
lev 1a:
This folder contains original reconstructed unprocessed instrument data – there are seven images and each has a metadata file.
For more information see: http://edcdaac.usgs.gov/aster/ast_l1a.asp
lev 1b:
This folder contains data that is registered radiance at the sensor – there are seven images and each has a metadata file.
For more information see: http://edcdaac.usgs.gov/aster/ast_l1b.asp
ASTER georef:
There are 3 subfolders labeled VIS, SWIR and THRM
Use this data for further processing in Arc (using .tif file) or ENVI (using .tif or .hdr) or other applicable programs…
o Folders contain: Geo-tiff and .hdr files for each of the seven ASTER images and all have been geo-referenced (WGS_1984_UTM_Zones 36 or 37) using ENVI 4.0. For information on how to geo-reference using ENVI see the following websites:
o http://activetectonics.la.asu.edu/Docs.html
http://dana.ess.washington.edu/~bill/ess422/ASTER_GeoRef_FINAL.pdf
o To name these files I used ast to denote them as aster images, then vis denotes what bands were used (vis, swir, thrm) and then the last three digits from the ASTER L1B data granule to denote which image it is, and finally georef or georef means that it has been geo-referenced.
Example: astvis_150_georf.tif
Example: astswir_150_georf.tif
Example: astthrm_150_georf.tif
o Band Combinations Used
§ VIS: RGB = Bands 3-2-1 respectively
§ SWIR: RGB = Bands 4-6-8 respectively
§ THRM: RGB = Bands 13-12-10 respectively
o I have played around with some of the intensity of the colors of the tif files so that they look good in Arc (only VIS). The .hdr files have not been altered besides being geo-referenced.
To view that ASTER user handbook:
(http://asterweb.jpl.nasa.gov/content/03_data/04_Documents/aster_user_guide_v2.pdf)
Individual Scene Data (obtained from metadata file)
The long ID # that is in blue is the 1b data ID number. The first data ID # (below) shows how to read the data ID # to read the acquisition and production dates, but all are provided. Below that are the geo-referenced files that relate to that particular image (each can be found in their respective folders). They are color coded with maroon = visible / light blue = swir / and orange = thermal. The band distinction can also be found within the name ‘astvis’ vs. ‘astswir’
There are seven total ASTER scenes in this data set
AST_L1B_003_07202001083039_07282001065150.hdf
Acquisition
Date: 07/20/2001 (mm/dd/yyyy)
Time: 08:30:39 (hh/mm/ss)
Production Date:
Date: 07/28/2001 (mm/dd/yyyy)
Time: 06:51:50 (hh/mm/ss)
Geo-referenced files: astvis_150_georef.hdr
astvis_150_georf.tif
astswir_150_georf.hdr
astswir_150_georef.tif
astthrm_150_georf.hdr
astthrm_150_georef.tif
(Files in the following formats are also included for use in Arc; .aux .rrd .tfw)
AST_L1B_003_09162002082957_10102002081456.hdf
Acquisition
Date: 09/16/2002
Time: 08:29:57
Production Date:
Date: 10/10/2002
Time: 08:14:56
Geo-referenced files: astvis_456_georef.hdr
astvis_456_georf.tif
astswir_456_georf.hdr
astswir_456_georef.tif
astthrm_456_georf.hdr
astthrm_456_georef.tif
AST_L1B_003_09162002083006_10102002103633.hdf
Acquisition
Date: 09/16/2002
Time: 08:30:06
Production Date:
Date: 10/10/2002
Time: 10:36:33
Geo-referenced files: astvis_633_georef.hdr
astvis_633_georf.tif
astswir_633_georf.hdr
astswir_633_georef.tif
astthrm_633_georf.hdr
astthrm_633_georef.tif
AST_L1B_003_09162002083015_10102002081602.hdf
Acquisition
Date: 09/16/2002
Time: 08:30:15
Production Date:
Date: 10/10/2002
Time: 08:16:02
Geo-referenced files: astvis_602_georef.hdr
astvis_602_georf.tif
astswir_602_georf.hdr
astswir_602_georef.tif
astthrm_602_georf.hdr
astthrm_602_georef.tif
AST_L1B_00306152003082831_07032003161935.hdf
Acquisition
Date: 06/15/2003
Time: 08:28:31
Production Date:
Date: 07/03/2003
Time: 16:19:35
Geo-referenced files: astvis_935_georef.hdr
astvis_935_georf.tif
astswir_935_georf.hdr
astswir_935_georef.tif
astthrm_935_georf.hdr
astthrm_935_georef.tif
AST_L1B_00310302003082231_11142003140649.hdf
Acquisition
Date: 10/30/2003
Time: 08:22:31
Production Date:
Date: 11/14/2003
Time: 14:06:49
Geo-referenced files: astvis_649_georef.hdr
astvis_649_georf.tif
astswir_649_georf.hdr
astswir_649_georef.tif
astthrm_649_georf.hdr
astthrm_649_georef.tif
AST_L1B_00310302003082239_02252004125442.hdf
Acquisition
Date: 10/30/2003
Time: 08:22:39
Production Date:
Date: 02/25/2004
Time: 12:54:42
Geo-referenced files: astvis_442_georef.hdr
astvis_442_georf.tif
astswir_442_georf.hdr
astswir_442_georef.tif
astthrm_442_georf.hdr
astthrm_442_georef.tif