Shuttle Radar Topography Mission Data Dictionary

Acquisition Date

• Field Definition:  The Shuttle Radar Topographic Mission was flown Feb. 11-22, 2000. The first day of acquisition is listed in the data set attributes table.
   

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
 

Date Updated

• Field Definition:  Day, month, and year of the last update.
   

Entity ID

• Field Definition:  This field describes the naming convention of each tile.

              Format:
              SRTM3N35E089V1
              SRTM = Dataset designator
              1 or 3 (1 = 1 arc-second coverage, 3 = 3 arc-second global coverage)
              N or S (N = North, S = South hemisphere)
              Next two characters indicate lower left corner Latitude
              E or W (E = East, W = West hemisphere)
              Next three characters indicate lower left corner Longitude
              V1, 2, or 3 (1 = SRTM Non-Void Filled, 2 = SRTM Void Filled, 3 = 1 Arc-Second Global)
 

Publication Date

• Field Definition:  Day, month, and year the data was published.
   

Resolution

• Field Definition:  This field identifies the resolution of the data in arc-seconds.

               Values:
               1 arc-second (approximately 30 meters)
               3 arc-second (approximately 90 meters)