- Dataset Availability
- 2013-03-18T15:58:14Z–2025-08-31T14:54:05.981000Z
- Dataset Provider
- USGS/Google
- Revisit Interval
- 16 Days
- Tags
Description
Landsat 8 Collection 2 Tier 1 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 scenes with the highest available data quality are placed into Tier 1 and are considered suitable for time-series processing analysis. Tier 1 includes Level-1 Precision Terrain (L1TP) processed data that have well-characterized radiometry and are inter-calibrated across the different Landsat sensors. The georegistration of Tier 1 scenes will be consistent and within prescribed tolerances [<=12 m root mean square error (RMSE)]. All Tier 1 Landsat data can be considered consistent and inter-calibrated (regardless of sensor) across the full collection. See more information in the USGS docs .
The T1_RT collection contains both Tier 1 and Real-Time (RT) assets. Newly-acquired Landsat 7 ETM+ and Landsat 8 OLI/TIRS data are processed upon downlink but use predicted ephemeris, initial bumper mode parameters, or initial TIRS line of sight model parameters. The data is placed in the Real-Time tier and made available for immediate download. Once the data have been reprocessed with definitive ephemeris, updated bumper mode parameters and refined TIRS parameters, the products are transitioned to either Tier 1 or Tier 2 and removed from the Real-Time tier. The transition delay from Real-Time to Tier 1 or Tier 2 is between 14 and 26 days.
Bands
Bands
B1
Coastal aerosol
B2
Blue
B3
Green
B4
Red
B5
Near infrared
B6
Shortwave infrared 1
B7
Shortwave infrared 2
B8
Band 8 Panchromatic
B9
Cirrus
B10
Thermal infrared 1, resampled from 100m to 30m
B11
Thermal infrared 2, resampled from 100m to 30m
QA_PIXEL
Landsat Collection 2 OLI/TIRS QA Bitmask
QA_RADSAT
Radiometric saturation QA
SAA
Solar Azimuth Angle
SZA
Solar Zenith Angle
VAA
View Azimuth Angle
VZA
View Zenith Angle
Image Properties
Image Properties
Percentage cloud cover (0-100), -1 = not calculated.
Percentage cloud cover over land (0-100), -1 = not calculated.
Tier of scene. (T1 or T2)
Number of collection.
Indicates the source of the DEM used in the correction process. Possible values: "GLS2000", "RAMP", "GTOPO30".'
The correction source used in creating the Landsat 8 TIRS stray light correction image. This field is not included for Landsat 9.
Image acquisition date. "YYYY-MM-DD"
Product generation epoch.
Datum used in image creation.
Earth sun distance in astronomical units (AU).
Ellipsoid used in image creation.
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.
RMSE of the X direction geometric residuals (in meters) measured on the GCPs used in geometric precision correction. Not present in L1G products.
RMSE of the Y direction geometric residuals (in meters) measured on the GCPs used in geometric precision correction. Not present in L1G products.
Grid cell size used in creating the image for the panchromatic band.
Grid cell size used in creating the image for the reflective band.
Grid cell size used in creating the image for the thermal band.
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).
The number of ground control points used in the verification of the terrain corrected product. Values: -1 to 1615 (-1 = not available)
The composite image quality for the OLI bands. Values: 9 = Best. 1 = Worst. 0 = Image quality not calculated. This parameter is only present if OLI bands are present in the product.
The composite image quality for the TIRS bands. Values: 9 = Best. 1 = Worst. 0 = Image quality not calculated. This parameter is only present if OLI bands are present in the product.
Calibration K1 constant for Band 10 radiance to temperature conversion.
Calibration K1 constant for Band 11 radiance to temperature conversion.
Calibration K2 constant for Band 10 radiance to temperature conversion.
Calibration K2 constant for Band 11 radiance to temperature conversion.
The naming convention of each Landsat Collection N 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 (02)
- TX = Collection Category (RT = Real Time, T1 = Tier 1, T2 = Tier 2)
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
Projection used to represent the 3-dimensional surface of the earth for the Level-1 product.
Nadir or Off-Nadir condition of the scene.
Orientation used in creating the image. Values: NOMINAL = Nominal Path, NORTH_UP = North Up, TRUE_NORTH = True North, USER = User
Number of product lines for the panchromatic band.
Number of product samples for the panchromatic bands.
Name and version of the processing software used to generate the L1 product.
Additive rescaling factor used to convert calibrated DN to radiance for Band 1.
Additive rescaling factor used to convert calibrated DN to radiance for Band 10.
Additive rescaling factor used to convert calibrated DN to radiance for Band 11.
Additive rescaling factor used to convert calibrated DN to radiance for Band 2.
Additive rescaling factor used to convert calibrated DN to radiance for Band 3.
Additive rescaling factor used to convert calibrated DN to radiance for Band 4.
Additive rescaling factor used to convert calibrated DN to radiance for Band 5.
Additive rescaling factor used to convert calibrated DN to radiance for Band 6.
Additive rescaling factor used to convert calibrated DN to radiance for Band 7.
Additive rescaling factor used to convert calibrated DN to radiance for Band 8.
Additive rescaling factor used to convert calibrated DN to radiance for Band 9.
Multiplicative rescaling factor used to convert calibrated Band 1 DN to radiance.
Multiplicative rescaling factor used to convert calibrated Band 10 DN to radiance.
Multiplicative rescaling factor used to convert calibrated Band 11 DN to radiance.
Multiplicative rescaling factor used to convert calibrated Band 2 DN to radiance.
Multiplicative rescaling factor used to convert calibrated Band 3 DN to radiance.
Multiplicative rescaling factor used to convert calibrated Band 4 DN to radiance.
Multiplicative rescaling factor used to convert calibrated Band 5 DN to radiance.
Multiplicative rescaling factor used to convert calibrated Band 6 DN to radiance.
Multiplicative rescaling factor used to convert calibrated Band 7 DN to radiance.
Multiplicative rescaling factor used to convert calibrated Band 8 DN to radiance.
Multiplicative rescaling factor used to convert calibrated Band 9 DN to radiance.
Additive rescaling factor used to convert calibrated Band 1 DN to reflectance.
Additive rescaling factor used to convert calibrated Band 2 DN to reflectance.
Additive rescaling factor used to convert calibrated Band 3 DN to reflectance.
Additive rescaling factor used to convert calibrated Band 4 DN to reflectance.
Additive rescaling factor used to convert calibrated Band 5 DN to reflectance.
Multiplicative factor used to convert calibrated Band 7 DN to reflectance.
Multiplicative factor used to convert calibrated Band 8 DN to reflectance.
Minimum achievable spectral reflectance value for Band 8.
Multiplicative factor used to convert calibrated Band 1 DN to reflectance.
Multiplicative factor used to convert calibrated Band 2 DN to reflectance.
Multiplicative factor used to convert calibrated Band 3 DN to reflectance.
Multiplicative factor used to convert calibrated Band 4 DN to reflectance.
Multiplicative factor used to convert calibrated Band 5 DN to reflectance.
Multiplicative factor used to convert calibrated Band 6 DN to reflectance.
Multiplicative factor used to convert calibrated Band 7 DN to reflectance.
Multiplicative factor used to convert calibrated Band 8 DN to reflectance.
Multiplicative factor used to convert calibrated Band 9 DN to reflectance.
Number of product lines for the reflective bands.
Number of product samples for the reflective bands.
Request id, nnnyymmdd0000_0000
- nnn = node number
- yy = year
- mm = month
- dd = day
Resampling option used in creating the image.
The amount of spacecraft roll angle at the scene center.
Flag indicating saturated pixels for band 1 ('Y'/'N')
Flag indicating saturated pixels for band 10 ('Y'/'N')
Flag indicating saturated pixels for band 11 ('Y'/'N')
Flag indicating saturated pixels for band 2 ('Y'/'N')
Flag indicating saturated pixels for band 3 ('Y'/'N')
Flag indicating saturated pixels for band 4 ('Y'/'N')
Flag indicating saturated pixels for band 5 ('Y'/'N')
Flag indicating saturated pixels for band 6 ('Y'/'N')
Flag indicating saturated pixels for band 7 ('Y'/'N')
Flag indicating saturated pixels for band 8 ('Y'/'N')
Flag indicating saturated pixels for band 9 ('Y'/'N')
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 used to capture data.
Spacecraft identification.
Ground Station/Organisation that received the data.
Sun azimuth angle in degrees for the image center location at the image center acquisition time.
Sun elevation angle in degrees for the image center location at the image center acquisition time.
Nearest WRS-2 path to the line-of-sight scene center of the image.
Nearest WRS-2 row to the line-of-sight scene center of the image. Rows 880-889 and 990-999 are reserved for the polar regions where it is undefined in the WRS-2.
Number of product lines for the thermal band.
Number of product samples for the thermal band.
Due to an anomalous condition on the Thermal Infrared Sensor (TIRS) Scene Select Mirror (SSM) encoder electronics, this field has been added to indicate which model was used to process the data. (Actual, Preliminary, Final)
TIRS SSM position status.
TIRS stray light correction source.
Region of OLCI truncated.
UTM zone number used in product map projection.
The WRS orbital path number (001 - 251).
Landsat satellite WRS row (001-248).
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.
Explore with Earth Engine
Code Editor (JavaScript)
var dataset = ee . ImageCollection ( 'LANDSAT/LC08/C02/T1_TOA' ) . filterDate ( '2017-01-01' , '2017-12-31' ); var trueColor432 = dataset . select ([ 'B4' , 'B3' , 'B2' ]); var trueColor432Vis = { min : 0.0 , max : 0.4 , }; Map . setCenter ( 6.746 , 46.529 , 6 ); Map . addLayer ( trueColor432 , trueColor432Vis , 'True Color (432)' );
import ee import geemap.core as geemap
Colab (Python)
dataset = ee . ImageCollection ( 'LANDSAT/LC08/C02/T1_TOA' ) . filterDate ( '2017-01-01' , '2017-12-31' ) true_color_432 = dataset . select ([ 'B4' , 'B3' , 'B2' ]) true_color_432_vis = { 'min' : 0.0 , 'max' : 0.4 , } m = geemap . Map () m . set_center ( 6.746 , 46.529 , 6 ) m . add_layer ( true_color_432 , true_color_432_vis , 'True Color (432)' ) m
