National Agriculture Imagery Program (NAIP) Data Dictionary Active

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

 

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