National Agriculture Imagery Program (NAIP) Data Dictionary

Acquisition Date

• Field Definition:  The year, month, and day the image was acquired.

               Format:
               YYYY/MM/DD
               YYYY = Year
               MM = Month
               DD = Day
 

Agency

• Field Definition:  NAIP is administered by the United States Department of Agriculture (USDA).
   

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 Entered

• Field Definition:  The date when an image appears in inventory.

Datum

• Field Definition:  Datum used to map the image.

               Values:
               NAD83 = North American Datum 1983
               WGS84 = World Geodetic System 1984
 

Entity ID

• Field Definition:  The naming convention of each file is based on image parameters.

               Format:
               S_DDdddQQ_qq_ZZ_R_YYYYMMDD_yyyymmdd
               S = Sensor Type
               DDddd = SE Reference point of 1 Degree Block (Latitude = DD, Longitude = ddd)
               QQ = Quad location (range 1 -64)
               qq = Quadrant indicator (NE, NW, SE, SW)
               ZZ = UTM Zone*
               R = Resolution in meters
               YYYYMMDD = Acquisition date (year, month, day)
               yyyymmdd = Date NAIP JPG2000 data was created (year, month, day)

              *Note: JPG files created in 2013 or later use the UTM zone associated with the uncompressed data available through USDA-                FSA-APFO.

              Example:
              M_3211418_NW_11_1_20120423_20120627
 

Map Projection

• Field Definition:  The map projection used to portray the surface of the earth on a flat surface.

              Values:
              UTM
              WGS 1984 Web Mercator Auxiliary Sphere
 

Number of Bands

• Field Definition:  The number of spectral bands contained in the image.
   

Project Name

• Field Definition:  A unique name given to a set of images that identifies the project.

              Format:
              YYYYMM_STATE_NAIP_1X0000M_UTM_SSSS
              YYYYMM = Acquisition year,and month
              STATE = State
              NAIP = Dataset
              1X0000 = Resolution where X represents a decimal point
              M = Units (meters)
              UTM = Projection
              SSSS = Sensor Type

             Example:
             201207_RHODE_ISLAND_NAIP_1X0000M_UTM_CNIR
 

Projection Zone

• Field Definition:  The zone associated with the map projection.

               Values:
               UTM Zone
               NA = Not Applicable
 

Resolution

• Field Definition:  The distance on the ground represented by one pixel.
   

Sensor

• Field Definition:  The type of camera used to acquire the imagery.
   

Sensor Type

• Field Definition:  The type of imagery acquired by the sensor.

              Values:
              CNIR = Color Near Infrared (CNIR)
              CLR = Natural Color (CLR)
              CIR = Color Infrared (CIR)

State

• Field Definition:  The State contained in the product. NAIP imagery is acquired in the continental U.S.
   

Units

• Field Definition:  The unit of measurement associated with the resolution.

              Values:
              Meters
 

Vendor

• Field Definition:  The organization or company that acquired the imagery. If a vendor is not listed in the original metadata, credit is given to the USDA’s Farm Service Agency (FSA) Aerial Photography Field Office (APFO).
   

JP2000 Available

• Field Definition:  The format of imagery available.

               Values:
               Yes = Results return GeoTIFF and JPG2000 images (Default)
               No = Results only return GeoTIFF images