Landsat Image Mosaic of Antarctica Enhanced Thematic Mapper Plus (LIMA) Data Dictionary

Acquisition Date

• Field Definition:  The date the image was acquired.

               Format:

               YYYY/MONTH/DD

 

Browse Availability Flag/Image Preview

• Field Definition:  This flag identifies whether or not the entity has a browse image available with it. A browse image provides the user with a visual overview of an inventory item to check cloud cover and to verify that the area of interest is contained in the selected frame.

          Values:

          Yes

          No

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:  The datum associated with the image.

              Valid Code:

              WGS 84 = Worldgeodetic System 1984

 

Entity ID

• Field Definition:  This field uniquely identifies the individual landsat scene.

              Example:

              LE7197053009929450

              Valid Format:

              L = Landsat

              E = ETM+

              7 = Satellite number

              177 = Path (WRS-2)

              051 = Row (WRS-2)

              00 =Version number (L7 uses one of these spots to track version number related to acquisition. This will mainly represent                  the SSR (Solid State Recorder) rewind/resend of partials that had happened to fall at the end of an SSR dump. Data that                      arrives from multiple ground stations may also be reflected here.)

              2006 = Four digit-year of acquisition

              259 = Julian date of acquisition

              ASN = *Receiving Station

              00 = Version number reflecting how many times the scene was processed (0=first time processed, 1= scene reprocessed,                  etc.)

              99 = Year

              294 = Julian day

              5 = Sensor ( 5 = ETM)

              0 = Version number (related to ingest processing)

 

Orientation

• Field Definition:  The orientation of the image.

               Values:

               Valid code = NUP (North Up)

 

Resampling Technique

• Field Definition:  The resampling applied to the scene.

              Valid Codes:

              CC = Cubic Convolution

              NN = Nearest Neighbor

 

Satellite Number

• Field Definition:  The satellite which acquired the data.

               Values:

               Valid Codes = Landsat 7

 

Scene Size

• Field Definition:  The size of all files associated with the scene, in megabytes.
  
   

Sun Azimuth

• Field Definition:  The Sun azimuth angle at the "true" WRS scene center. Azimuth is the angle of horizonal deviation, measured clockwise from the north.

              Values:

              -180.0000000 through +180.0000000 degrees (with 7-digit precision)

              NOTE: A positive value

 

Sun Elevation

• Field Definition:  The Sun elevation angle at the "true" WRS scene center. Elevation is the angle of vertical deviation from the tangent to the earth's surface (at scene center point) to the line between the sun's center and the scene center point. NOTE: The solar zenith angle will be 90 degrees minus the solar elevation angle.

               Values:

               0 through +90.0000000 (with a 7-digit precision)

 

WRS Path

• Field Definition:  The WRS-2 Path number associated with the scene.

               Values:

               001 through 233

 

WRS Row

• Field Definition:  The WRS-2 Row number associated with the scene.

               Values:

               001 through 244