ASTER Global Emissivity Database (GED) Data Dictionary
The Data Dictionaries are a set of information describing the contents, format, and structure of elements for EarthExplorer products.
- Field Definition: The last day of data acquisition.
Format:
YYYY/MM/DD
- Field Definition: The first day of data acquisition.
Format:
YYYY/MM/DD
- Field Definition: The latitude and longitude are provided in decimal degrees for the following fields:
Values:
Scene Center Latitude and Longitude
Northeast (NE) Corner Latitude and Longitude
Northwest (NW) Corner Latitude and Longitude
Southeast (SE) Corner Latitude and Longitude
Southwest (SW) Corner Latitude and Longitude
Latitude Format Decimal Degrees: -90.000 through 90.000
Longitude Format Decimal Degrees: -180.000 through 180.000
Number of decimal places will vary by dataset – check collection in EE.
Coordinates Degrees, Minutes, Seconds
- Field Definition: The latitude and longitude are provided in degrees, minutes, and seconds for the following fields:
Values:
Scene Center Latitude and Longitude
Northeast (NE) Corner Latitude and Longitude
Northwest (NW) Corner Latitude and Longitude
Southeast (SE) Corner Latitude and Longitude
Southwest (SW) Corner Latitude and Longitude
Longitude Format:
DDDMMSS.SSH
DDD = Degree(s) with a range of 0 through 180
MM = Minute(s) with a range of 0 through 59
SS.SS = Second(s) with a range of 0 through 59.99
H = Hemisphere with E for east and W for west
Latitude Format:
DDMMSS.SSH
DD = Degree(s) with a range of 0 through 90
MM = Minutes(s) with a range of 0 through 59
SS.SS = Second(s) with a range of 0 through 59.99
H = Hemisphere with N for north and S for south
- Field Definition: The Digital Object Identifier (DOI) Authority provides the infrastructure for the registration and services for a persistent reference. The DOI authority is used along with the DOI Name to view the associated URL for the product.
Example:
https://dx.doi.org or https://doi.org
- Field Definition: Digital Object Identifier is used to uniquely and permanently identify a dataset. The DOI name is more stable than a URL and is used as a permanent reference for the product. The DOI name can be entered into a DOI Authority system to view the associated URL for the product.
Example:
10.5067/Community/ASTER_GED/AG5KMMOH.041
- Field Definition: The naming convention of each file is based on the Local Granule ID.
- Field Definition: The name of an individual file provided by LP DAAC.
Format for ASTER GED AG5KMMOH:
ASTER_GEDv4.1_AYYYYddd.h5
ASTER_GEDv4.1 = Product Name & Version number
AYYYYddd = Acquisition Beginning Date - Year and Julian Day
h5 = HDF5 Data Format
Example
ASTER_GEDv4.1_A2005001.h5
Format for ASTER GED AG100 & ASTER GED AG1KM:
PPPPP.VVV.Lat.Lon.RRRR.h5
PPPPP = Product Short Name (Number of characters may vary by data set)
VVVV = Version Number
Lat = Northwest Corner Latitude
Lon = Northwest Corner Longitude
RRRR = Resolution where 0001 = 100 meter and 0010 = 1 kilometer
h5 = HDF5 Data Format
Example:
AG100 Example - AG100.v003.38.-119.0001.h5
AG1KM Example - AG1km.v003.66.-014.0010.h5
- Field Definition: The data version for the ASTER GED product.
The Data Dictionaries are a set of information describing the contents, format, and structure of elements for EarthExplorer products.
- Field Definition: The last day of data acquisition.
Format:
YYYY/MM/DD
- Field Definition: The first day of data acquisition.
Format:
YYYY/MM/DD
- Field Definition: The latitude and longitude are provided in decimal degrees for the following fields:
Values:
Scene Center Latitude and Longitude
Northeast (NE) Corner Latitude and Longitude
Northwest (NW) Corner Latitude and Longitude
Southeast (SE) Corner Latitude and Longitude
Southwest (SW) Corner Latitude and Longitude
Latitude Format Decimal Degrees: -90.000 through 90.000
Longitude Format Decimal Degrees: -180.000 through 180.000
Number of decimal places will vary by dataset – check collection in EE.
Coordinates Degrees, Minutes, Seconds
- Field Definition: The latitude and longitude are provided in degrees, minutes, and seconds for the following fields:
Values:
Scene Center Latitude and Longitude
Northeast (NE) Corner Latitude and Longitude
Northwest (NW) Corner Latitude and Longitude
Southeast (SE) Corner Latitude and Longitude
Southwest (SW) Corner Latitude and Longitude
Longitude Format:
DDDMMSS.SSH
DDD = Degree(s) with a range of 0 through 180
MM = Minute(s) with a range of 0 through 59
SS.SS = Second(s) with a range of 0 through 59.99
H = Hemisphere with E for east and W for west
Latitude Format:
DDMMSS.SSH
DD = Degree(s) with a range of 0 through 90
MM = Minutes(s) with a range of 0 through 59
SS.SS = Second(s) with a range of 0 through 59.99
H = Hemisphere with N for north and S for south
- Field Definition: The Digital Object Identifier (DOI) Authority provides the infrastructure for the registration and services for a persistent reference. The DOI authority is used along with the DOI Name to view the associated URL for the product.
Example:
https://dx.doi.org or https://doi.org
- Field Definition: Digital Object Identifier is used to uniquely and permanently identify a dataset. The DOI name is more stable than a URL and is used as a permanent reference for the product. The DOI name can be entered into a DOI Authority system to view the associated URL for the product.
Example:
10.5067/Community/ASTER_GED/AG5KMMOH.041
- Field Definition: The naming convention of each file is based on the Local Granule ID.
- Field Definition: The name of an individual file provided by LP DAAC.
Format for ASTER GED AG5KMMOH:
ASTER_GEDv4.1_AYYYYddd.h5
ASTER_GEDv4.1 = Product Name & Version number
AYYYYddd = Acquisition Beginning Date - Year and Julian Day
h5 = HDF5 Data Format
Example
ASTER_GEDv4.1_A2005001.h5
Format for ASTER GED AG100 & ASTER GED AG1KM:
PPPPP.VVV.Lat.Lon.RRRR.h5
PPPPP = Product Short Name (Number of characters may vary by data set)
VVVV = Version Number
Lat = Northwest Corner Latitude
Lon = Northwest Corner Longitude
RRRR = Resolution where 0001 = 100 meter and 0010 = 1 kilometer
h5 = HDF5 Data Format
Example:
AG100 Example - AG100.v003.38.-119.0001.h5
AG1KM Example - AG1km.v003.66.-014.0010.h5
- Field Definition: The data version for the ASTER GED product.