NASADEM Data Dictionary

Acquisition End Date

• Field Definition:  The last day of data acquisition.

              Format:
              YYYY/MM/DD
 

Acquisition Start Date

• Field Definition:  The first day of data acquisition.

               Format:
               YYYY/MM/DD
 

Coordinates - Decimal Degrees

• 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
 

DOI Authority

• 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://doi.org
 

DOI Name

• 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/MEaSUREs/NASADEM/NASADEM_HGT.001
 

Entity ID

• Field Definition:  The name of an individual scene in EarthExplorer.

               Format:
               NASADEM_PPP_LatLon.zip

               NASADEM_PPP = Product Short Name (Number of characters may vary by data set)
               LatLon = Latitude and Longitude for the lower left corner of the 1 x 1 degree tile
               zip = Compressed data format

               Example
               NASADEM_SHHP Example: NASADEM_SHHP_n22e040.zip
               NASADEM_SSP Example: NASADEM_SSP_s08e025.zip
 

Local Granule ID

• Field Definition:  The name of an individual file.

               Format:
               NASADEM_PPP_LatLon.zip

               NASADEM_PPP = Product Short Name (Number of characters may vary by data set)
               LatLon = Latitude and Longitude for the lower left corner of the 1 x 1 degree tile
               zip = Compressed data format

               Example
               NASADEM_HGT Example: NASADEM_HGT_s36w071.zip
               NASADEM_SC Example: NASADEM_SC_n53e079.zip
 

Product Generation Algorithm

• Field Definition:  Version number of the Product Generation Algorithm used to create the data.
   

Version Number

• Field Definition:  The version number of the data set.

               Values:
               1