USGS EROS Archive - Landsat Archives - Landsat 8-9 Operational Land Imager and Thermal Infrared Sensor Collection 2 Level-1 Data Active

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Sources/Usage: Public Domain. View Media Details

The Operational Land Imager (OLI) and Thermal Infrared Sensor (TIRS) are onboard the Landsat 8 and Landsat 9 satellites, have acquired images of the Earth since  February 2013. The OLI and TIRS are instruments onboard the Landsat 9 satellite, which was launched September 27, 2021.  The sensors each collect images of the Earth with a 16-day repeat cycle, referenced to the Worldwide Reference System-2. Each satellite’s acquisitions are in an 8-day offset. The approximate scene size is 170 km north-south by 183 km east-west (106 mi by 114 mi).

Landsat 8-9 image data files consist of 11 spectral bands with a spatial resolution of 30 meters for bands 1-7 and bands 9-11; 15-meters for the panchromatic band 8. (See Landsat satellite band designations for more information.)

Delivered Landsat 8-9 Level-1 data typically include both OLI and TIRS data files; however, there may be OLI-only and/or TIRS-only scenes in the USGS archive. The first two values of the Landsat product identifier designates the data provided in each scene: (Landsat 8 used as examples)

LC08_L1TP_003055_20170207_20170216_01_T1 = Combined (both OLI and TIRS data)

LO08_L1TP_021047_20150304_20170227_01_T1 = OLI data only

LT08_L1GT_137206_20170202_20170215_01_T2 = TIRS data only

A Quality Assurance (QA.tif) band is also included. This file provides bit information regarding conditions that may affect the accuracy and usability of a given pixel – clouds, water or snow, for example.

Standard Processing Parameters

All Collection 2 Landsat 8-9 OLI/TIRS Collection 2 Level-1 data are processed using the Landsat Product Generation System (LPGS) with the following parameters applied:

Landsat 8-9 OLI/TIRS Collection 2 Level-1 Data

Landsat Tiers are the inventory structure for Landsat Collection Level-1 data products and are based on data quality and level of processing. All scenes in the Landsat archive are assigned to a Collection category. The purpose of Collection categories is to support rapid and easy identification of suitable scenes for time-series pixel level analysis. These data have well-characterized radiometric quality and are cross-calibrated ​among the different Landsat sensors.​​​

Collection Category (Tier)

• Tier 1 (T1) – Contains the highest quality Level-1 Terrain Precision (L1TP) data considered suitable for time-series analysis. The georegistration is consistent and within prescribed tolerances [<12m root mean square error (RMSE)].
• Tier 2 (T2) – Contains L1TP scenes not meeting Tier 1 criteria and all Systematic Terrain (L1GT) and Geometric Systematic (L1GS) scenes. Users interested in Tier 2 scenes can evaluate the RMSE and other properties to determine suitability for use in their applications and studies.
• Real-Time (RT) (Landsat 8 only)  –  Contains newly acquired Landsat 8 scenes, which require a period of evaluation and calibration adjustment after acquisition but are processed immediately based on preliminary calibration coefficients, assigned to the temporary RT Tier, and made available for download. When definitive calibration information becomes available (approximately 14-16 days), these scenes are reprocessed, assigned to the appropriate Tier 1 or Tier 2 category, and removed from the RT Tier.

The Landsat Collections page contains additional information about changes applied to Landsat Level-1 data for Collection 2.

Coverage Maps

Coverage Maps indicating the availability of Landsat 8-9 Collection products are available for download.

• Download shapefile
• Download kml

Additional Information

• Landsat Collection 2
• Project Documentation 
• Landsat FAQs
• USGS Landsat - Earth Observation Satellites Fact Sheet
• Landsat 9 Data User Handbook 

Access Data

Landsat 8-9 Collection 2 Level-1 scenes held in the USGS archive can be searched using EarthExplorer. On EarthExplorer, Landsat 8-9 scenes can be found under the Landsat menu in the “Landsat Collection 2 Level-1” section, in the “Landsat 8-9 OLI/TIRS C2 L1” dataset.

Newly acquired Landsat 8 and Landsat 9 scenes become available for search and download within 6 hours after data acquisition. To view real-time acquisitions of Landsat 8-9, please visit EarthNow!

Digital Object Identifier (DOI)

Collection 2 Landsat 8-9 OLI/TIRS Digital Object Identifier (DOI) number: /10.5066/P975CC9B

Landsat 8-9 OLI/TIRS Collection 2 Level-2 Digital Object Identifier (DOI) number: 10.5066/P9OGBGM6