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 are organized into one of three tier categories (Real Time, Tier 1 or Tier 2) based on data quality and level of processing. This tiered data Collection 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 To learn more about Landsat Collections please visit https://usgs.gov/landsat-collections.
The Landsat Program is a series of Earth-observing satellites co-managed by USGS and NASA, and offers the longest continuous space-based record of Earth’s land in existence. Every day, Landsat satellites orbit Earth and provide essential information to help land managers and policymakers make informed decisions about our natural resources and environment. All Landsat data are distributed by the USGS at no charge from EarthExplorer, GloVis, and the LandsatLook Viewer. To learn more about the Landsat Program please visit https://usgs.gov/landsat or follow us on Twitter @USGSLandsat or Facebook @NASA.Landsat.