What are Landsat Collection Tiers?

Landsat Collection Tiers are the inventory structure for Level-1 data products and are based on data quality and level of processing. The tier definition purpose is to support easier identification of suitable scenes for time-series pixel-level analysis, and provide temporary data that are processed immediately upon downlink to be dispensed quickly in emergency response situations with limited calibration.

Learn more: Landsat Collections

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How can I tell the difference between Landsat Collections data and Landsat data I have downloaded in the past?

The first indication you have data processed meeting Collections specifications is that your data will have a Landsat Product Identifier, not the historical Landsat Scene ID. Along with information inherited from the Scene ID, the Landsat Product Identifier includes the processing level, processing date, collection number, and collection category...

What are Landsat Collections?

In 2016, the USGS reorganized the Landsat archive into a tiered collection. This structure ensures that Landsat Level-1 products provide a consistent archive of known data quality to support time-series analyses and data “stacking”, while controlling continuous improvement of the archive and access to all data as they are acquired. Learn more:...

Does the Landsat 7 Scan Line Corrector (SLC)-off artifact affect Landsat Collections tier designation?

The Landsat 7 SLC-off artifact does not change how the data are placed into Landsat Collection tiers, as tier classifications are determined by the radiometric and geometric accuracy of each scene. Learn more: Landsat Collections Landsat Data Access

What are the acquisition schedules for the Landsat satellites?

The Landsat 7 and Landsat 8 satellites orbit the Earth at an altitude of 705 kilometers (438 miles) in a 185-kilometer (115-mile) swath, moving from north to south over the sunlit side of the Earth in a sun synchronous orbit, following the World Reference System (WRS-2) . Each satellite makes a complete orbit every 99 minutes, completes about 14...

What is the naming convention for Landsat Collections Level-1 scenes?

The Landsat Collection 1 Level-1 product identifier includes the Collection processing levels, processing date, collection number, and collection iter category: LXSS_LLLL_PPPRRR_YYYYMMDD_yyyymmdd_CC_TX Where: L = Landsat X = Sensor (“C”=OLI/TIRS combined, “O”=OLI-only, “T”=TIRS-only, “E”=ETM+, “T”=“TM, “M”=MSS) SS = Satellite (”07”=Landsat 7, “08...

What are the processing levels for Landsat Level-1 data?

The table below shows the Landsat Collections Level-1 processing levels: Landsat Level-1 Processing Levels Processing Level Description Terrain Precision Correction (L1TP) Radiometrically calibrated and orthorectified using ground control points (GCPs) and digital elevation model (DEM) data to correct for relief displacement.The highest quality...

What are U.S. Landsat Analysis Ready Data (ARD)?

U.S. Landsat Analysis Ready Data (ARD) are pre-packaged and pre-processed bundles of Landsat data products that make the Landsat archive more accessible and easier to analyze, and reduce the amount of time users spend on data processing for time-series analysis. ARD contains Level-2 products derived from Landsat Collections Level-1 scenes. ARD are...

What are U.S. Landsat Analysis Ready Data (ARD)?

U.S. Landsat Analysis Ready Data (ARD) are pre-packaged and pre-processed bundles of Landsat data products that make the Landsat archive more accessible and easier to analyze, and reduce the amount of time users spend on data processing for time-series analysis. ARD contains Level-2 products derived from Landsat Collections Level-1 scenes. ARD are...

After a Landsat scene is collected, when will it become available for search and download?

Landsat scenes directly downlinked to the USGS EROS Landsat Ground Station become available through EarthExplorer within 6 hours after acquisition, and then become visible in GloVis and the LandsatLook Viewe r within 24 hours. Scenes downlinked to other USGS Ground Stations can be available within 1 to 2 weeks. Scenes downlinked to International...
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Date published: November 14, 2017

New Map of Worldwide Croplands Supports Food and Water Security

India has the highest net cropland area while South Asia and Europe are considered agricultural capitals of the world.

Date published: June 26, 2017

Peering into the Future of Agricultural Change

What would it take to produce a billion tons of biomass for fuel production? 

Date published: March 24, 2017

New “Landsat Collections” Help Facilitate Land Change Science

Access to consistent high-quality images to study changes on Earth’s surface is getting easier. The USGS Landsat standard (Level-1) product inventory is now structured by data quality and offers improved calibration. Data designated as Tier 1 provide the highest accuracy and can be reliably used to analyze changes to Earth’s surface over time.

Date published: January 11, 2017

Landsat Eyes Help Guard the World’s Forests

“We’re seeing the loss of forests in many places,” said Matthew Hansen, a professor at the University of Maryland. “Dynamics include increasing tropical deforestation, more frequent and severe boreal forest fires, disease in temperate forests and the commoditization of subtropical forests.”

Filter Total Items: 9
Landsat 8 image
October 3, 2018

Landsat 8 image

Landsat 8 image - Earth as Art

August 30, 2018

Landsat in Action - Water Use with Molly Maupin and Gabriel Senay

USGS Hydrologist Molly Maupin and USGS Research Physical Scientist Gabriel Senay discuss how Landsat imagery has been used by the National Water Census and in studying water use trends.
 

May 24, 2018

Landsat in Action - Infrastructure of Landsat Data with Matt Hansen

Matt Hansen talks about the value of Landsat data as an infrastructure for research and innovation.
 

March 23, 2018

Landsat in Action - The Importance of Landsat with Curtis Woodcock

Boston University Professor Curtis Woodcock talks about the significance Landsat was had in science and what he hopes to see as the mission continues.
 

December 31, 2017

Landsat Collections

Landsat Collections: Providing a Stable Environmental Record for Time Series Analysis

This video introduces the new U.S. Geological Survey (USGS) Landsat Collection 1 inventory structure. Collection 1 required the reprocessing of all archived Landsat data to achieve radiometric and geometric consistency of Level-1 products through time and across all Landsat sensors

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November 7, 2017

Landsat Analysis Ready Data (ARD)

The U.S. Geological Survey (USGS) has improved Landsat data quality and usability through the creation of Analysis Ready Data (ARD) for the conterminous United States, Alaska, and Hawaii. Landsat ARD greatly reduces the preparatory work currently required to do time-series analysis for understanding landscape change for operational and science users. Landsat Collections

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September 19, 2017

Landsat Collections — What are Tiers?

This is the third video in a series describing the new U.S. Geological Survey (USGS) Landsat Collection 1 inventory structure. Collection 1 required the reprocessing of all archived Landsat data to achieve radiometric and geometric consistency of Level-1 products through time and across all Landsat sensors. This video explains how Landsat Collection Level-1 data products

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June 30, 2017

Landsat Collections - RMSE

Landsat Collections: Providing a Stable Environment Record for Time Series Analysis

This is the second of a three-part video series describing the new U.S. Geological Survey (USGS) Landsat Collection 1 inventory structure. Collection 1 required the reprocessing of all archived Landsat data to achieve radiometric and geometric consistency of Level-1 products through

...
December 31, 2012

2012 Landsat Top Ten Loop

A "Top Ten" video of locations featuring land change, as captured by USGS Landsat