Landsat Higher-Level Albers Data Dictionary

Acquisition Date

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

               Format:
               YYYY/MM/DD
 

Collection Number

• Field Definition:  Landsat Collections provides a quality controlled selection of radiometrically calibrated and consistently geolocated data with sufficiently geographically aligned pixels to support time series analysis through the full Landsat record.
   

Date L-2 Generated

• Field Definition:  The most recent date that the Level-2 Product has been produced.
   

Land Cloud Cover

• Field Definition:  Land Cloud Cover is the percentage of land image data that is obscured by clouds.

              Values:
              0.00 through 100.00 percent where -1 = Cloud Cover not calculated or assessed.
 

Landsat Product Identifier

• Field Definition:  The naming convention of each Collection 1 Level-1 image is based on acquisition and processing parameters.

              Format:
              LXSS_LLLL_PPPRRR_YYYYMMDD_yyyymmdd_CC_TX

              L = Landsat
              X = Sensor (O = OLI, T = TIRS, C = Combined OLI/TIRS for Landsat 8; E = ETM+ for L7, T = TM for Landsat 4 & 5)
              SS = Satellite (08 = Landsat 8, 07 = Landsat 7, 05 = Landsat 5, & 04 = Landsat 4)
              LLLL = Processing Correction Level (L2TP = precision and terrain, L2GT = systematic terrain, L2GS = systematic)
              PPP = WRS Path
              RRR = WRS Row
              YYYYMMDD = Acquisition Date expressed in Year, Month, Day
              yyyymmdd = Processing Date expressed in Year, Month, Day
              CC = Collection Number (01)
              TX = Collection Category (A1 = Tier 1 Albers, A2 = Tier 2 Albers)

              Example: LE07_L2TP_017031_19990726_20161109_01_A1
 

Landsat Scene Identifier

• Field Definition:  The Pre-Collection naming convention of each Landsat image is based on acquisition parameters. This was the naming convention used prior to Collection 1.

               Format:
               LXSPPPRRRYYYYDDDGSIVV

               L = Landsat
               X = Sensor (O = OLI, T = TIRS, C = Combined OLI/TIRS for Landsat 8; E = EMT+ for L7, T = TM for Landsat 4 & 5)
               S = Satellite (8 = Landsat 8, 7 = Landsat 7, 5 = Landsat 5, & 4 = Landsat 4)
               PPP = WRS Path
               RRR = WRS Row
               YYYY = Year of Acquisition
               DDD = Julian Day of Acquisition
               GSI = Ground Station Identifier
               VV = Version

               Example: LE70170311999207EDC00
 

Level-2 Albers Identifier

• Field Definition:  The naming convention of each Collection 1 Level-1 image is based on acquisition and processing parameters.

              Format:
              LXSSPPPRRRYYYYMMDDCCA1-SCyyyymmddhhmmss

              L = Landsat
              X = Sensor (O = OLI, T = TIRS, C = Combined OLI/TIRS for Landsat 8; E = EMT+ for L7, T = TM for Landsat 4 & 5)
              SS = Satellite (08 = Landsat 8, 07 = Landsat 7, 05 = Landsat 5, & 04 = Landsat 4)
              PPP = WRS Path
              RRR = WRS Row
              YYYYMMDD = Acquisition Date expressed in Year, Month, Day
              CC = Collection Number (01)
              A1 = Collection Category (A1 = Tier 1 Albers, A2 = Tier 2 Albers)
              SC = Science
              yyyymmddhhmmss = Processing timestamp expressed in Year, Month, Day, Hours, Minutes, Seconds

              Example: LC080190342017020701A1-SC20170322170702
 

Map Projection

• Field Definition:  The method used to represent the 3-dimensional surface of the earth for the Level-2 product.

              Values:
              AEA = Albers Equal Area
 

Satellite

• Field Definition:  The Landsat satellite which acquired the data.
  
  Values:
  Landsat 8
  Landsat 7
  Landsat 5
  Landsat 4
   

Scene Cloud Cover

• Field Definition:  Scene Cloud Cover is the percentage of the scene that is obscured by clouds.

               Values:
               0.00 through 100.00 percent where -1 = Cloud Cover not calculated or assessed.
 

Sensor Identifier

• Field Definition:  The sensor used to capture the Landsat data.

               Values:
               OLI = Operational Land Imager
               TIRS = Thermal Infrared Sensor
               OLI/TIRS = Operational Land Imager/Thermal Infrared Sensor
               ETM+ = Enhanced Thematic Mapper Plus
               TM = Thematic Mapper
 

Target WRS Path

• Field Definition:  Nearest WRS path to the Line-Of-Sight scene center. This is used primarily for scenes with off-nadir look angles. The center of scene for off-nadir imaging may be several paths left or right of the orbital path and the center may even be off the WRS-2 grid when near the poles. This is an estimated value, for reference.

              Values:
              001 - 251
 

Target WRS Row

• Field Definition:  Nearest WRS Row to the Line-Of-Sight scene center. This is used primarily for scenes with off-nadir look angles. The center of scene for off-nadir imaging may be several paths left or right of the orbital path and the center may even be off the WRS-2 grid when near the poles. This is an estimated value, for reference.

              Values:
              001-059 = Northern Hemisphere (Descending)
              060 = Equator (Descending)
              061-119 = Southern Hemisphere (Descending)
              120-122 = Southern Polar Zone (Descending)
              123-183 = Southern Hemisphere (Ascending)
              184 = Equator (Ascending)
              185-246 = Northern Hemisphere (Ascending)
              247-248 = Northern Polar Zone (Descending)

              For acquisitions near the poles, it is possible to look off-nadir toward the pole, into an area not defined by the WRS-2 grid                  (above 82.61 degrees). To allow unique Target Row assignments, the North Pole area is assigned a row of 88n, and the                      South Pole area is assigned a row of 99n, where n is a sequential number. Up to seven scenes can be covered in these                        areas; therefore, the scenes are assigned row numbers 880 to 886, or 990 to 996.
 

WRS Path

• Field Definition:  Worldwide Reference System (WRS)-defined nominal Landsat satellite track (path).

               Values:
               001 - 233
 

WRS Row

• Field Definition:  Worldwide Reference System (WRS)-defined nominal Landsat satellite row.

               Values:
               001 - 248