USGS Landsat 4 TM Collection 2 Tier 2 TOA Reflectance

Dataset Availability

1982-08-22T14:18:20Z–1993-11-18T14:54:14Z

Dataset Provider

USGS/Google

Earth Engine Snippet

ee.ImageCollection("LANDSAT/LT04/C02/T2_TOA")

Tags

global landsat toa usgs

Description

Landsat 4 TM Collection 2 Tier 2 calibrated top-of-atmosphere (TOA) reflectance. Calibration coefficients are extracted from the image metadata. See Chander et al. (2009) for details on the TOA computation.

Bands

Bands

Name	Pixel Size	Wavelength	Description
B1	30 meters	0.45 - 0.52 μm	Blue
B2	30 meters	0.52 - 0.60 μm	Green
B3	30 meters	0.63 - 0.69 μm	Red
B4	30 meters	0.76 - 0.90 μm	Near infrared
B5	30 meters	1.55 - 1.75 μm	Shortwave infrared 1
B6	30 meters	10.40 - 12.50 μm	Thermal Infrared 1. Resampled from 60m to 30m.
B7	30 meters	2.08 - 2.35 μm	Shortwave infrared 2
QA_PIXEL	30 meters		Landsat Collection 2 TM/ETM QA Bitmask
Bitmask for QA_PIXEL Bit 0: Fill 0: Image data 1: Fill data Bit 1: Dilated Cloud 0: Cloud is not dilated or no cloud 1: Cloud dilation Bit 2: Unused Bit 3: Cloud 0: Cloud confidence is not high 1: High confidence cloud Bit 4: Cloud Shadow 0: Cloud Shadow Confidence is not high 1: High confidence cloud shadow Bit 5: Snow 0: Snow/Ice Confidence is not high 1: High confidence snow cover Bit 6: Clear 0: Cloud or Dilated Cloud bits are set 1: Cloud and Dilated Cloud bits are not set Bit 7: Water 0: Land or cloud 1: Water Bits 8-9: Cloud Confidence 0: No confidence level set 1: Low confidence 2: Medium confidence 3: High confidence Bits 10-11: Cloud Shadow Confidence 0: No confidence level set 1: Low confidence 2: Reserved 3: High confidence Bits 12-13: Snow / Ice Confidence 0: No confidence level set 1: Low confidence 2: Reserved 3: High confidence Bits 14-15: Unused
QA_RADSAT	30 meters		Radiometric saturation QA
Bitmask for QA_RADSAT Bit 0: Band 1 data saturated Bit 1: Band 2 data saturated Bit 2: Band 3 data saturated Bit 3: Band 4 data saturated Bit 4: Band 5 data saturated Bit 5: Band 6L data saturated Bit 6: Band 7 data saturated Bit 7: Unused Bit 8: Band 6H data saturated Bit 9: Dropped pixel 0: Pixel present 1: Detector does not have a value
SAA	30 meters		Solar Azimuth Angle
SZA	30 meters		Solar Zenith Angle
VAA	30 meters		View Azimuth Angle
VZA	30 meters		View Zenith Angle

Image Properties

Image Properties

Name	Type	Description
CLOUD_COVER	DOUBLE	Percentage cloud cover (0-100), -1 = not calculated.
CLOUD_COVER_LAND	DOUBLE	Percentage cloud cover over land (0-100), -1 = not calculated.
COLLECTION_CATEGORY	STRING	Tier of scene. (T1 or T2)
COLLECTION_NUMBER	DOUBLE	Number of collection.
CORRECTION_BIAS_BAND_1	STRING	Internal calibration bias method for band 1.
CORRECTION_BIAS_BAND_2	STRING	Internal calibration bias method for band 2.
CORRECTION_BIAS_BAND_3	STRING	Internal calibration bias method for band 3.
CORRECTION_BIAS_BAND_4	STRING	Internal calibration bias method for band 4.
CORRECTION_BIAS_BAND_5	STRING	Internal calibration bias method for band 5.
CORRECTION_BIAS_BAND_6	STRING	Internal calibration bias method for band 6.
CORRECTION_BIAS_BAND_7	STRING	Internal calibration bias method for band 7.
CORRECTION_GAIN_BAND_1	STRING	Internal calibration gain method for band 1.
CORRECTION_GAIN_BAND_2	STRING	Internal calibration gain method for band 2.
CORRECTION_GAIN_BAND_3	STRING	Internal calibration gain method for band 3.
CORRECTION_GAIN_BAND_4	STRING	Internal calibration gain method for band 4.
CORRECTION_GAIN_BAND_5	STRING	Internal calibration gain method for band 5.
CORRECTION_GAIN_BAND_6	STRING	Internal calibration gain method for band 6.
CORRECTION_GAIN_BAND_7	STRING	Internal calibration gain method for band 7.
DATA_SOURCE_ELEVATION	DOUBLE	Indicates the source of the DEM used in the correction process. Possible values: "GLS2000", "RAMP", "GTOPO30".
DATA_TYPE_L0RP	STRING	Data type identifier string used to create the L0RP product.
DATE_ACQUIRED	STRING	Image acquisition date. "YYYY-MM-DD"
DATE_PRODUCT_GENERATED	INT	Product generation epoch.
DATUM	STRING	Datum used in image creation.
EARTH_SUN_DISTANCE	DOUBLE	Earth sun distance in astronomical units (AU).
ELLIPSOID	STRING	Ellipsoid used in image creation.
EPHEMERIS_TYPE	STRING	Ephemeris data type used to perform geometric correction. (Definitive or Predictive)
GEOMETRIC_RMSE_MODEL	DOUBLE	Combined Root Mean Square Error (RMSE) of the geometric residuals (meters) in both across-track and along-track directions measured on the GCPs used in geometric precision correction. Not present in L1G products.
GEOMETRIC_RMSE_MODEL_X	DOUBLE	RMSE of the X direction geometric residuals (in meters) measured on the GCPs used in geometric precision correction. Not present in L1G products.
GEOMETRIC_RMSE_MODEL_Y	DOUBLE	RMSE of the Y direction geometric residuals (in meters) measured on the GCPs used in geometric precision correction. Not present in L1G products.
GEOMETRIC_RMSE_VERIFY	DOUBLE	RMSE of the geometric residuals (pixels) in both line and sample directions measured on the terrain-corrected product independently using GLS2000.
GEOMETRIC_RMSE_VERIFY_QUAD_LL	DOUBLE	RMSE of the geometric residuals (pixels) of the lower-left quadrant measured on the terrain-corrected product independently using GLS2000.
GEOMETRIC_RMSE_VERIFY_QUAD_LR	DOUBLE	RMSE of the geometric residuals (pixels) of the lower-right quadrant measured on the terrain-corrected product independently using GLS2000.
GEOMETRIC_RMSE_VERIFY_QUAD_UL	DOUBLE	RMSE of the geometric residuals (pixels) of the upper-left quadrant measured on the terrain-corrected product independently using GLS2000.
GEOMETRIC_RMSE_VERIFY_QUAD_UR	DOUBLE	RMSE of the geometric residuals (pixels) of the upper-right quadrant measured on the terrain-corrected product independently using GLS2000.
GRID_CELL_SIZE_REFLECTIVE	DOUBLE	Grid cell size used in creating the image for the reflective band.
GRID_CELL_SIZE_THERMAL	DOUBLE	Grid cell size used in creating the image for the thermal band.
GROUND_CONTROL_POINTS_MODEL	DOUBLE	The number of ground control points used. Not used in L1GT products. Values: 0 - 999 (0 is used for L1T products that have used Multi-scene refinement).
GROUND_CONTROL_POINTS_VERIFY	DOUBLE	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	DOUBLE	The number of ground control points used in the verification of the terrain corrected product. Values: -1 to 1615 (-1 = not available)
IMAGE_QUALITY	DOUBLE	Image quality, 0 = worst, 9 = best, -1 = quality not calculated
K1_CONSTANT_BAND_6	DOUBLE	Calibration K1 constant for Band 6 radiance to temperature conversion.
K2_CONSTANT_BAND_6	DOUBLE	Calibration K2 constant for Band 6 radiance to temperature conversion.
LANDSAT_PRODUCT_ID	STRING	The naming convention of each Landsat Collection 1 Level-1 image based on acquisition parameters and processing parameters. Format: LXSS_LLLL_PPPRRR_YYYYMMDD_yyyymmdd_CC_TX L = Landsat X = Sensor (O = Operational Land Imager, T = Thermal Infrared Sensor, C = Combined OLI/TIRS) SS = Satellite (08 = Landsat 8) 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 (RT = Real Time, T1 = Tier 1, T2 = Tier 2)
LANDSAT_SCENE_ID	STRING	The Pre-Collection naming convention of each image is based on acquisition parameters. This was the naming convention used prior to Collection 1. Format: LXSPPPRRRYYYYDDDGSIVV L = Landsat X = Sensor (O = Operational Land Imager, T = Thermal Infrared Sensor, C = Combined OLI/TIRS) S = Satellite (08 = Landsat 8) PPP = WRS Path RRR = WRS Row YYYY = Year of Acquisition DDD = Julian Day of Acquisition GSI = Ground Station Identifier VV = Version
MAP_PROJECTION	STRING	Projection used to represent the 3-dimensional surface of the earth for the Level-1 product.
MAP_PROJECTION_L0RA	STRING	L0RA map projection selectively applied to HDTs based on geographic location. Used for processed archive data.
ORIENTATION	STRING	Orientation used in creating the image. Values: NOMINAL = Nominal Path, NORTH_UP = North Up, TRUE_NORTH = True North, USER = User
PROCESSING_LEVEL	DOUBLE	One of L1GS, L1GT, or L1TP.
PROCESSING_SOFTWARE_VERSION	STRING	Name and version of the processing software used to generate the L1 product.
RADIANCE_ADD_BAND_1	DOUBLE	Additive rescaling factor used to convert calibrated DN to radiance for Band 1.
RADIANCE_ADD_BAND_2	DOUBLE	Additive rescaling factor used to convert calibrated DN to radiance for Band 2.
RADIANCE_ADD_BAND_3	DOUBLE	Additive rescaling factor used to convert calibrated DN to radiance for Band 3.
RADIANCE_ADD_BAND_4	DOUBLE	Additive rescaling factor used to convert calibrated DN to radiance for Band 4.
RADIANCE_ADD_BAND_5	DOUBLE	Additive rescaling factor used to convert calibrated DN to radiance for Band 5.
RADIANCE_ADD_BAND_6	DOUBLE	Additive rescaling factor used to convert calibrated DN to radiance for Band 6.
RADIANCE_ADD_BAND_7	DOUBLE	Additive rescaling factor used to convert calibrated DN to radiance for Band 7.
RADIANCE_MULT_BAND_1	DOUBLE	Multiplicative rescaling factor used to convert calibrated Band 1 DN to radiance.
RADIANCE_MULT_BAND_2	DOUBLE	Multiplicative rescaling factor used to convert calibrated Band 2 DN to radiance.
RADIANCE_MULT_BAND_3	DOUBLE	Multiplicative rescaling factor used to convert calibrated Band 3 DN to radiance.
RADIANCE_MULT_BAND_4	DOUBLE	Multiplicative rescaling factor used to convert calibrated Band 4 DN to radiance.
RADIANCE_MULT_BAND_5	DOUBLE	Multiplicative rescaling factor used to convert calibrated Band 5 DN to radiance.
RADIANCE_MULT_BAND_6	DOUBLE	Multiplicative rescaling factor used to convert calibrated Band 6 DN to radiance.
RADIANCE_MULT_BAND_7	DOUBLE	Multiplicative rescaling factor used to convert calibrated Band 7 DN to radiance.
REFLECTANCE_ADD_BAND_1	DOUBLE	Additive rescaling factor used to convert calibrated Band 1 DN to reflectance.
REFLECTANCE_ADD_BAND_2	DOUBLE	Additive rescaling factor used to convert calibrated Band 2 DN to reflectance.
REFLECTANCE_ADD_BAND_3	DOUBLE	Additive rescaling factor used to convert calibrated Band 3 DN to reflectance.
REFLECTANCE_ADD_BAND_4	DOUBLE	Additive rescaling factor used to convert calibrated Band 4 DN to reflectance.
REFLECTANCE_ADD_BAND_5	DOUBLE	Additive rescaling factor used to convert calibrated Band 5 DN to reflectance.
REFLECTANCE_ADD_BAND_7	DOUBLE	Additive rescaling factor used to convert calibrated Band 7 DN to reflectance.
REFLECTANCE_MULT_BAND_1	DOUBLE	Multiplicative factor used to convert calibrated Band 1 DN to reflectance.
REFLECTANCE_MULT_BAND_2	DOUBLE	Multiplicative factor used to convert calibrated Band 2 DN to reflectance.
REFLECTANCE_MULT_BAND_3	DOUBLE	Multiplicative factor used to convert calibrated Band 3 DN to reflectance.
REFLECTANCE_MULT_BAND_4	DOUBLE	Multiplicative factor used to convert calibrated Band 4 DN to reflectance.
REFLECTANCE_MULT_BAND_5	DOUBLE	Multiplicative factor used to convert calibrated Band 5 DN to reflectance.
REFLECTANCE_MULT_BAND_7	DOUBLE	Multiplicative factor used to convert calibrated Band 7 DN to reflectance.
REFLECTIVE_LINES	DOUBLE	Number of product lines for the reflective bands.
REFLECTIVE_SAMPLES	DOUBLE	Number of product samples for the reflective bands.
REQUEST_ID	STRING	Request id, nnnyymmdd0000_0000 nnn = node number yy = year mm = month dd = day
RESAMPLING_OPTION	STRING	Resampling option used in creating the image.
SATURATION_BAND_1	STRING	Flag indicating saturated pixels for band 1 ('Y'/'N')
SATURATION_BAND_2	STRING	Flag indicating saturated pixels for band 2 ('Y'/'N')
SATURATION_BAND_3	STRING	Flag indicating saturated pixels for band 3 ('Y'/'N')
SATURATION_BAND_4	STRING	Flag indicating saturated pixels for band 4 ('Y'/'N')
SATURATION_BAND_5	STRING	Flag indicating saturated pixels for band 5 ('Y'/'N')
SATURATION_BAND_6	STRING	Flag indicating saturated pixels for band 6 ('Y'/'N')
SATURATION_BAND_7	STRING	Flag indicating saturated pixels for band 7 ('Y'/'N')
SCENE_CENTER_TIME	STRING	Scene center time of acquired image. HH:MM:SS.SSSSSSSZ HH = Hour (00-23) MM = Minutes SS.SSSSSSS = Fractional seconds Z = "Zulu" time (same as GMT)
SENSOR_ANOMALIES	STRING	Indicates if shutter intrusion is found within scene.
SENSOR_ID	STRING	Sensor used to capture data.
SENSOR_MODE	STRING	Operational mode. Scan Angle Monitor (SAM) or BUMPER.
SENSOR_MODE_SLC	STRING	Indicates the Scan Line Corrector (SLC) was ON.
SPACECRAFT_ID	STRING	Spacecraft identification.
STATION_ID	STRING	Ground Station/Organisation that received the data.
SUN_AZIMUTH	DOUBLE	Sun azimuth angle in degrees for the image center location at the image center acquisition time.
SUN_ELEVATION	DOUBLE	Sun elevation angle in degrees for the image center location at the image center acquisition time.
THERMAL_LINES	STRING	Product lines for the thermal bands.
THERMAL_SAMPLES	STRING	Product samples for the thermal bands.
UTM_ZONE	DOUBLE	UTM zone number used in product map projection.
WRS_PATH	DOUBLE	The WRS orbital path number (001 - 251).
WRS_ROW	DOUBLE	Landsat satellite WRS row (001-248).
WRS_TYPE	STRING	World Reference System (WRS) type used for the collection of this scene.

Terms of Use

Terms of Use

Landsat datasets are federally created data and therefore reside in the public domain and may be used, transferred, or reproduced without copyright restriction.

Acknowledgement or credit of the USGS as data source should be provided by including a line of text citation such as the example shown below.

(Product, Image, Photograph, or Dataset Name) courtesy of the U.S. Geological Survey

Example: Landsat-7 image courtesy of the U.S. Geological Survey

See the USGS Visual Identity System Guidance for further details on proper citation and acknowledgement of USGS products.

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Code Editor (JavaScript)

var dataset = ee.ImageCollection('LANDSAT/LT04/C02/T2_TOA')
                  .filterDate('1989-01-01', '1992-12-31');
var trueColor321 = dataset.select(['B3', 'B2', 'B1']);
var trueColor321Vis = {
  min: 0.0,
  max: 0.4,
  gamma: 1.2,
};
Map.setCenter(6.746, 46.529, 6);
Map.addLayer(trueColor321, trueColor321Vis, 'True Color (321)');

Open in Code Editor

USGS Landsat 4 TM Collection 2 Tier 2 TOA Reflectance

Landsat 4 TM Collection 2 Tier 2 calibrated top-of-atmosphere (TOA) reflectance. Calibration coefficients are extracted from the image metadata. See Chander et al. (2009) for details on the TOA computation.

LANDSAT/LT04/C02/T2_TOA, global,landsat,toa,usgs

1982-08-22T14:18:20Z/1993-11-18T14:54:14Z

Google Earth Engine

https://developers.google.com/earth-engine/datasets