eMODIS Global LST Data Dictionary

 

Agency

• Field Definition:  The U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center is the organization responsible for maintenance and distribution of this data collection.

 

Begin Date

• Field Definition:  The first day of data acquisition for the source data at the start of the collection period. The begin date and end date are used to indicate the date range for the product.

 

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

 

End Date

• Field Definition:  The last day of data acquisition for the source data at the end of the collection period. The begin date and end date are used to indicate the date range for the product.

 

Entity ID

• Field Definition:  The naming convention of each file is based on product attributes.

          Format:

          EMGLSTPYYYYDDMMyyyymmddV

          EM = Dataset Designator (eMODIS)

          GLST = Global Land Surface Temperature

          P = Platform: A = AQUA

          YYYYMMDD = Begin date of cycle

          yyyymmdd= End date of cycle

          V = Version of source data

         Example:

              EMGLSTA20071111200711205

 

Map Projection

• Field Definition:  The method of representing the surface of the earth on a plane using grid lines of latitude and longitude.

 

Pixel Resolution

• Field Definition:  The pixel resolution in meters.

 

Platform

• Field Definition:  The Terra and Aqua satellites carry the MODIS sensor.

 

Sensor

• Field Definition:  The Moderate Resolution Imaging Spectroradiometer (MODIS) is the instrument on the satellite used to acquire the source data for the product.

 

Version

• Field Definition:  The version of MODIS source data used to create the product. The original eMODIS Global LST data set was processed using MODIS Version/Collection 5 source data.