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Landsat 4-5 Collection 1 Data Dictionary

Acquisition Date
  • Field Definition:  The year, month and day that the scene was acquired.
Format:
YYYY/MM/DD
Acquisition Quality
  • Field Definition:  Acquisition Quality is a value, expressed as a single digit number, based on errors encountered during archive processing; and/or visible artifacts in the data when manually inspected.
Values:
9 = Excellent (no quality issues or errors detected)
7-8 = Good (minor quality issues and/or errors detected)
Calibration Parameter File
  • Field Definition:  The name of the Calibration Parameter File containing the radiometric and geometric coefficients used to process the raw, uncorrected Landsat TM image data.
Collection Category
  • Field Definition:  Landsat Collection 1 is organized by a tiered inventory structure to indicate the quality and level of processing of the data.

    Values:
    T1 = Tier 1 is the highest available quality and processing level. This category is suitable for time-series analysis across the different Landsat sensors.

    T2 = Tier 2 scenes contain significant cloud cover and have insufficient ground control to generate precision and terrain corrected products.
Collection Number
  • Field Definition:  Collection 1 provides a quality-controlled selection of radiometrically calibrated and consistently geolocated data; particular geodetic accuracy and error tolerances are specified to align pixels for time series analysis through the full Landsat record.
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
Corner Latitude and Longitude Product
  • Field Definition:  The latitude and longitude value (degrees) for the upper left corner (northwest corner for descending coverage / southeast corner for ascending coverage) of the product including the black fill. In the case of non-Earth or ancillary-only intervals, zero (0) is used as a placeholder.
Values:
Corner Upper Left (UL) Product Latitude
Corner Upper Left (UL) Product Longitude
Corner Upper Right (UR) Product Latitude
Corner Upper Right (UR) Product Longitude
Corner Lower Left (LL) Corner Latitude
Corner Lower Left (LL) Corner Longitude
Corner Lower Right (LR) Corner Latitude
Corner Lower Right (LR) Corner Longitude

Latitude Format:
dd.ddddd (DDMMSS.SSH)
dd.ddddd = Decimal Degrees*
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
* A positive (+) value indicates geographic North latitude. A negative (-) value indicates geographic South latitude.

Latitude Example:
42.74227 (42°44'32.17"N)

Longitude Format:
ddd.ddddd (DDDMMSS.SSH)
ddd.ddddd = Decimal Degrees**
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
** A positive (+) value indicates geographic East longitude. A negative (-) value indicates geographic West longitude.

Longitude Example:
-122.20707 (122°12'25.45"W)
Data Category
  • Field Definition:  Data Category indicates the type of data acquisition.
Values:
NOMINAL = Nominal Data
EXCHANGE = Exchange Data
TEST = Test Data
ENGINEERING = Engineering Data
VALIDATION = Validation Data
Data Type Level-1
  • Field Definition:  Data Type Level-1 indicates the highest level of correction that has been applied to the scene.
Values:
L1GS = Systematic Correction (Level-1GS) provides systematic, radiometric, and geometric accuracy, which is derived from data collected by the sensor.

L1GT = Systematic Terrain Correction (Level-1GT) provides systematic, radiometric, and geometric accuracy, while employing a Digital Elevation Model (DEM) for topographic accuracy.

L1TP = Full Terrain Correction (Level-1TP) provides systematic, radiometric, and geometric accuracy by incorporating ground control points while employing a Digital Elevation Model (DEM) for topographic accuracy.
Date L1 Generated
  • Field Definition:  The most recent date that the Level-1 Product has been produced.
Datum
  • Field Definition:  The horizontal reference system associated with the image.
Values:
WGS84 = World Geodetic System 1984
Day/Night Indicator
  • Field Definition:  This field indicates whether the data was acquired during a daytime or nighttime pass.
Values:
DAY = Day scene
NIGHT = Night scene
Elevation Source
  • Field Definition:  Digital elevation dataset that was used to terrain-correct the product.
Values:
NED = National Elevation Dataset
SRTM = Shuttle Radar Topography Mission
GTOPO30 = Global 30 Arc Second Elevation Digital Data
GLS2000 = Global Land Survey 2000
RAMP = Radarsat Antarctic Mapping Project
Ellipsoid
  • Field Definition:  The reference ellipsoid used to map the data.
Values:
WGS84 = World Geodetic System 1984
Ephemeris Type
  • Field Definition:  Orbital ephemeris type used. Definitive ephemeris is used for geometrically correcting Landsat data, and provides improved accuracy over Predicted ephemeris.
Values:
Definitive = Definitive ephemeris
Predictive = Predictive ephemeris
Geometric RMSE Model
  • Field Definition:  Combined RMSE (Root Mean Square Error) of the geometric residuals (meters) in both across-track and along-track directions measured on the GCPs (Ground Control Points) used in geometric precision correction.
Geometric RMSE Model X
  • Field Definition:  RMSE (Root Mean Square Error) of the geometric residuals (meters) measured on the GCPs (Ground Control Points) used in geometric precision correction in the along-track direction.
Geometric RMSE Model Y
  • Field Definition:  RMSE of the geometric residuals (meters) measured on the GCPs used in geometric precision correction in the across-track direction.
Grid Cell Size Reflective
  • Field Definition:  Grid cell size (meters) used in creating the image for the reflective band.
Grid Cell Size Thermal
  • Field Definition:  Grid cell size (meters) used in creating the image for the thermal band.
Ground Control Points Model
  • Field Definition:  The number of ground control points used in the verification of the terrain corrected product.
Values:
-1 to 1615 (- 1 = not available)
Ground Control Points Version
  • Field Definition:  The version number of the ground control points used in the verification of the terrain corrected product.
Values:
-1, 1, 2, 3, etc. (-1 = not available)
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 L4-5 Collection 1 image is based on acquisition and processing parameters.
Format:
LXSS_LLLL_PPPRRR_YYYYMMDD_yyyymmdd_CC_TX

L = Landsat
X = Sensor (T = Thematic Mapper)
SS = Satellite (04 = Landsat 4, 05 = Landsat 5)
LLLL = Processing Correction level (L1TP = precision and terrain, L1GT = systematic terrain, L1GS = 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 (T1 = Tier 1, T2 = Tier 2)

Example: LT04_L1GS_017036_19821115_20160315_01_T2
Landsat Scene Identifier
  • Field Definition:  The naming convention of each L4-5 Collection 0 image is based on acquisition parameters.
Format:
LXSPPPRRRYYYYDDDGSIVV

L = Landsat
X = Sensor (T = Thematic Mapper)
S = Satellite
PPP = WRS Path
RRR = WRS Row
YYYY = Year of Acquisition
DDD = Day of Acquisition Year
GSI = Ground Station Identifier
VV = Version

Example: LT50470232010279GLC02
Map Projection L1
  • Field Definition:  The method used to represent the 3-dimensional surface of the earth for the Level-1 (L1) product.
Values:
PS = Polar Stereographic
UTM = Universal Transverse Mercator
Orientation
  • Field Definition:  Orientation used in creating the image.
Values:
NOMINAL = Nominal Path
NORTH_UP = North Up
TRUE_NORTH = True North
USER = User
Output Format
  • Field Definition:  Data format available for download.
Values:
GEOTIFF = Geostationary Earth Orbit Tagged Image File Format
Processing Software Version
  • Field Definition:  Name and version of the processing software used to generate the L1 product.
Quality Band 1 - 7
  • Field Definition:  Quality band is a value, expressed as a single digit number, based on errors encountered during archive processing; and/or visible artifacts in the data when manually inspected.
Values:
9 = Excellent (no quality issues or errors detected)
7-8 = Good (minor quality issues and/or errors detected)
5-6 = Fair (moderate quality issues and/or errors detected)
3-4 = Poor (significant quality issues and/or errors detected)
1-2 = Extremely Poor (severe quality issues and/or errors detected)
0 = Worst
M = Band is missing
U = Band has an unknown quality score (expected but insufficient information)
Reflective Lines
  • Field Definition:  Number of product lines for the reflective bands.
Reflective Samples
  • Field Definition:  Number of product samples for the reflective bands.
Resampling Option
  • Field Definition:  Resampling option used in creating the image.
Values:
CUBIC_CONVOLUTION = Cubic Convolution
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 Anomalies
  • Field Definition:  The Sensor Anomalies flag indicates any anomalies associated with the scene.
Values:
ASCENDING_DESCENDING = Ascending/Descending problem Landsat 4-5 coordinates recalculated for descending.

BAND_4_NOT_DECOMPRESSED = Band 4 is not decompressed = dynamic range of 0 - 64.
Affects only the first few months of Landsat 4, band 4 acquisitions.

BUMPER_MODE = Landsat 5 scene acquired while the satellite was in bumper mode.
Landsat 5 was permanently placed into bumper mode May 1, 2002.

FRAMING = Poor framing problem.

N = No sensor anomaly exists.

POST_LAUNCH = Post launch problems from TMACS.

PRE_WRS = Pre WRS experimental data, scene center may be geographically off the
WRS orbital track.

RADIOMETRIC_CALIBRATION_DATA = Engineering radiometric calibration data.
SENSOR_WARM_UP = Sensor warm-up problem; roller coaster defect.

STRIPING = Striping problem.
Sensor Mode
  • Field Definition:  Mode that the sensor was in during capture of this interval.
Values:
BUMPER = Bumper mode
SAM = SAM (Scan Angle Monitor) mode
Spacecraft Identifier
  • Field Definition:  Spacecraft from which the data was captured.
Values:
Landsat 4
Landsat 5
Start Time
  • Field Definition:  Acquisition year, Julian day and GMT spacecraft start time of either the first major frame of the interval or the start of a WRS scene
Values:
YYYY:DDD:HH:MI:SS.SSSSSSS

YYYY = Four digit year
DDD = Julian day of year
HH = Hour (00-23)
MI = Minute
SS.SSSSSSS = Fractional seconds
Station Identifier
  • Field Definition:  Original ground receiving station to which this data was downlinked. All data received from ground stations are archived at the USGS EROS unless otherwise noted. Maps showing these stations can be found at https://landsat.usgs.gov/about_ground_stations.php.
Values:
AAA - North America receiving site unknown within the date range from launch to July 1, 2001
ASA = Alice Springs, Australia
ASN = Alice Springs, Australia
BIK = Bishkek, Kyrgyzstan
BJC = Beijing, China
BKT = Bangkok, Thailand
CHM = Chetumal, Mexico
CLT = Chung-Li, Taipei, Taiwan
COA = Cordoba, Argentina
CPE = Cotopaxi, Ecuador
CUB = Cuiaba, Brazil
DKI = Parepare, Indonesia
EDC = EROS Data Center, SD, USA
FUI = Fucino, Italy
GLC = Gilmore Creek, AK, USA
GNC = Gatineau, Canada
HAJ = Hatoyama, Japan
HOA = Hobart, Australia
IKR = Irkutsk, Russia
ISP = Islamabad, Pakistan
JSA = Hartebeesthoek, South Africa
KHC = KaShi, China
KIS = Kiruna, Sweden
LBG = Libreville, Gabon
LGS = EROS Landsat Ground Station beginning July 1, 2001 (Landsat 5)
MGR = Magadan, Russia
MLK = Malindi, Kenya
MOR = Moscow, Russia
MPS = Maspalomas, Spain
MTI = Matera, Italy
PAC = Prince Albert, Canada
RSA = Riyadh, Saudi Arabia
SGI = Shadnagar, India
ULM = Ulan Bator, Mongolia
XXX = Receiving station unknown
Stop Time
  • Field Definition:  Acquisition year, Julian day, and GMT spacecraft stop time of either the last major frame of the interval or the stop of a WRS scene.
Values:
YYYY:DDD:HH:MI:SS.SSSSSSS
YYYY = Four digit year
DDD = Julian day of year
HH = Hour (00-23)
MI = Minute
SS.SSSSSSS = Fractional seconds
Sun Azimuth
  • Field Definition:  Sun azimuth angle (degrees) at the WRS scene center. A positive value (+) indicates angles to the East or clockwise from North. Zero indicates North. A negative value (-) indicates angles to the West or counterclockwise from North.
Values:
-180.0000000 through +180.0000000 degrees
Sun Elevation
  • Field Definition:  Sun elevation angle (degrees) at the WRS scene center. A positive value (+) indicates a daytime scene. Zero indicates a nighttime scene. A negative value (-) indicates a nighttime scene.
Values:
- 90.0000000 through + 90.0000000 degrees
Thermal Lines
  • Field Definition:  Number of product lines for the thermal bands.
Thermal Samples
  • Field Definition:  Number of product samples for the thermal bands.
UTM Zone
  • Field Definition:  The UTM (Universal Transverse Mercator) zone used to project the location of the scene. A negative zone indicates that the false northing needs to be applied to the northing coordinate and a positive zone indicates that the false northing has been applied.
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