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QuickDRI Data Dictionary

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By Earth Resources Observation and Science (EROS) Center July 16, 2021

The Data Dictionaries are a set of information describing the contents, format, and structure of elements for EarthExplorer products.

 

Agency

  • Field Definition:  USGS EROS is the agency associated with this collection.

     

Begin Date

  • Field Definition:  The first date of image acquisition for the eMODIS NDVI composite used to generate the QuickDRI 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

 

Date Updated

  • Field Definition:  The date the product was updated in the database at USGS EROS. A blank field indicates that the data not been updated.

     

End Date

  • Field Definition:  The last date of image acquisition for the eMODIS NDVI composite used to generate the QuickDRI product.

     

Entity ID

  • Field Definition:  A unique identification code given to each scene based on dataset designator, region, begin date, end date, and version number associated with the product.

              Format:

              Q = QuickDRI

              T = T for Terra or A for Aqua (satellite)

              M = MODIS (sensor)

              CONUS = Region (CONUS = Conterminous US)

              2009 = Year of begin date

              05 = Month of begin date

              06 = Day of begin date

              2009 = Year of end date

              05 = Month of end date

              12 = Day of end date

              01 = Version number of QuickDRI product

              Example:

              QAMCONUS200905062009051201

 

Map Projection

  • Field Definition:  Geographic projection used to map the product.

              Values:

              Lambert Azimuth Equal Area

 

Number of Days

  • Field Definition:  The total number of acquisition days contained in the collection period for the eMODIS NDVI composite used to generate the QuickDRI product.

     

Pixel Size

  • Field Definition:  The distance on the ground represented by each pixel in meters.

     

Product Type

  • Field Definition:  Type of data available for download.

              Values:

              QuickDRI

 

Project Central Coordinates

  • Field Definition:  The center latitude and longitude of the project area.

              Format:

              DD = Degrees (Valid Values: 0-90 for Latitude)

              DDD = Degrees (Valid Values 0-180 for Longitude)

              H = Hemisphere (Valid Values: N or S for Latitude, E or W for Longitude)

              Note: Minutes and seconds are zero-filled

              Example:

              DDH, DDDH

 

Region

  • Field Definition:  Geographic area of the product.

               Values:

               Conterminous US

 

Satellite

  • Field Definition:  The satellite which acquired the data.

               Values:

               Aqua

               Terra

               VIRRS

 

Sensor

  • Field Definition:  The instrument used to acquire the data for the NDVI composite.

              Values:

              MODIS

              VIIRS

 

Version

  • Field Definition:  The version for the MODIS source data used to generate the QuickDRI product. QuickDRI V6 utilizes MODIS Version/Collection 6 source data.

The Data Dictionaries are a set of information describing the contents, format, and structure of elements for EarthExplorer products.

 

Agency

  • Field Definition:  USGS EROS is the agency associated with this collection.

     

Begin Date

  • Field Definition:  The first date of image acquisition for the eMODIS NDVI composite used to generate the QuickDRI 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

 

Date Updated

  • Field Definition:  The date the product was updated in the database at USGS EROS. A blank field indicates that the data not been updated.

     

End Date

  • Field Definition:  The last date of image acquisition for the eMODIS NDVI composite used to generate the QuickDRI product.

     

Entity ID

  • Field Definition:  A unique identification code given to each scene based on dataset designator, region, begin date, end date, and version number associated with the product.

              Format:

              Q = QuickDRI

              T = T for Terra or A for Aqua (satellite)

              M = MODIS (sensor)

              CONUS = Region (CONUS = Conterminous US)

              2009 = Year of begin date

              05 = Month of begin date

              06 = Day of begin date

              2009 = Year of end date

              05 = Month of end date

              12 = Day of end date

              01 = Version number of QuickDRI product

              Example:

              QAMCONUS200905062009051201

 

Map Projection

  • Field Definition:  Geographic projection used to map the product.

              Values:

              Lambert Azimuth Equal Area

 

Number of Days

  • Field Definition:  The total number of acquisition days contained in the collection period for the eMODIS NDVI composite used to generate the QuickDRI product.

     

Pixel Size

  • Field Definition:  The distance on the ground represented by each pixel in meters.

     

Product Type

  • Field Definition:  Type of data available for download.

              Values:

              QuickDRI

 

Project Central Coordinates

  • Field Definition:  The center latitude and longitude of the project area.

              Format:

              DD = Degrees (Valid Values: 0-90 for Latitude)

              DDD = Degrees (Valid Values 0-180 for Longitude)

              H = Hemisphere (Valid Values: N or S for Latitude, E or W for Longitude)

              Note: Minutes and seconds are zero-filled

              Example:

              DDH, DDDH

 

Region

  • Field Definition:  Geographic area of the product.

               Values:

               Conterminous US

 

Satellite

  • Field Definition:  The satellite which acquired the data.

               Values:

               Aqua

               Terra

               VIRRS

 

Sensor

  • Field Definition:  The instrument used to acquire the data for the NDVI composite.

              Values:

              MODIS

              VIIRS

 

Version

  • Field Definition:  The version for the MODIS source data used to generate the QuickDRI product. QuickDRI V6 utilizes MODIS Version/Collection 6 source data.
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