![]() To learn more about the Landsat Collection 2 DEM, visit the Landsat Collection 2 Digital Elevation Model page. Landsat Collection 2 uses the 3-arc-second DEM sources shown on the map below. Together, these sources are all known as the Landsat Collection 2 Digital Elevation Model (DEM). These sources, based on specific geographic regions, contribute to improved vertical accuracy in Collection 2 when compared to data processed in the past. Several digital elevation model sources are used in the processing of Landsat Collection 2 Level-1 data. A 2019 publication shows improved accuracy in ground control by deploying a triangulation method on a continent by continent basis. The January 2020: Phase 4 - Collection 2 section on the Landsat Ground Control Points webpage provides more information. Re-baselining the Landsat 8 OLI Ground Control Points (GCPs) to the European Space Agency Copernicus Sentinel-2 Global Reference Image (GRI) improves the interoperability of the global Landsat archive spatially and temporally. Analysis Ready Data (ARD), and Landsat Collection 2 products. For a more detailed description of Collection 2 processing, geometric, and radiometric improvements please visit the Collection 2 Level-1 page or review the accompanying documentation.ĭownload this Quick Reference Guidethat lists the calibration, data processing, metadata, and product differences between Landsat Collection 1 Level-1, Level-2 U.S. ![]() Visit the Landsat Data Access web page to discover how to search and download all Landsat products from USGS data portals.īelow is a high-level summary of the main improvements for Collection 2. The USGS are the first recipients of the Committee on Earth Observation Satellites (CEOS) endorsement for Analysis Ready Data for Land (CARD4L) - compliant products for Landsat Collection 2 Level-2 products. This internationally recognized certification ensures that Landsat Collection 2 Level-2 products are more interoperable with other Earth observing platforms, such as Europe’s Sentinel-2 satellite, as they too work towards CARD4L-compliant products. Analysis Ready Data (ARD) tiled products are available for the conterminous U.S. Global Level-2 surface reflectance and surface temperature scene-based products are available for Landsat data from 1982 to present. Collection 2 also includes updated global digital elevation modeling sources and calibration and validation updates.Ĭollection 2 contains Landsat Level-1 data for all sensors since 1972. Image used with permission by CEOS.Ī primary characteristic of Collection 2 is the substantial improvement in the absolute geolocation accuracy of the global ground reference dataset - which improves interoperability of the Landsat archive through time. This internationally-recognized certification recognizes satellite data that have been processed to a minimum set of requirements and organized into a structure that allows for immediate analysis with minimum user effort and interoperability both through time and with other datasets. Visit Media to see details.Ĭommittee on Earth Observation Satellites (CEOS) Analysis Ready Data for Land (CARD4L) compliance stamp logo. Sources/Usage: Some content may have restrictions.
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