Landsat Collections: Providing a Stable Environmental Record for Time Series Analysis
What is Landsat definitive ephemeris?
Definitive Ephemeris is used for geometrically correcting Landsat data and providing improved accuracy over predicted ephemeris.
Learn more (and download DE files): Landsat Definitive Ephemeris
Related
How is the percentage of cloud cover calculated in a Landsat scene?
The C Function of Mask (CFMask) algorithm is used in Landsat Collection 1 Level-1 data processing. This algorithm provides a full-image “Scene Cloud Cover” estimation of the percentage of cloud cover calculated over an entire Landsat scene. Land Cloud Cover, which is also included, is determined by calculating the percentage of clouds over land-only pixels in a scene using a mask that...
What are Landsat Response Linearization Look Up Tables?
Landsat Response Linearization Look Up Tables (RLUT) are additional files that accompany Calibration Parameter Files (CPFs) and contain a mapping lookup table to linearize the output of the Landsat 8 and Landsat 9 Operational Land Imager (OLI) and Thermal Infrared Sensor (TIRS) detectors. Learn more (and download RLUT files): Landsat Response Linearization Look Up Tables
What is Landsat 7 ETM+ SLC-off data?
Landsat 7 ETM+ SLC-off refers to all Landsat 7 images collected after May 31, 2003, when the Scan Line Corrector (SLC) failed. These products have data gaps but are still useful and maintain the same radiometric and geometric corrections as data collected prior to the SLC failure. The Landsat 7 satellite acquired science data until January 19, 2024. Learn more: Landsat 7
What are Landsat Bias Parameter Files?
Landsat Bias Parameter Files (BPFs) supply radiometric correction parameters that are applied during Level-1 processing of Landsat data. Learn more (and search for BPF files): Landsat Bias Parameter
What are Landsat Calibration Parameter Files?
Landsat Calibration Parameter Files (CPFs) provide radiometric and geometric coefficients needed for processing of raw, uncorrected Landsat image data into Level-1 data products. Over 15,000 coefficients are issued to span distinct timeframes and are updated with improved calibration coefficients. CPFs are often updated with improved coefficients. Learn more (and search CPF files): Landsat...
What is the Landsat Collections Saturation Bits parameter?
The Landsat Collection 2 Level-1 product metadata (MTL.txt) file includes a SATURATION_BAND_ x parameter for each Landsat band. This field indicates the presence of radiometric saturation for each band in every Landsat scene. Learn more: Landsat Collections Level-1 Saturation Bits Parameter
Landsat Collections
Landsat Collections: Providing a Stable Environmental Record for Time Series Analysis
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 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.
What's the Big Idea? — Charting Change from the Skies
Tom Loveland, research scientist with the USGS Earth Resources Observation and Science Center, explains how he uses data — both past and present — to help scientists, natural resource managers, and the public better understand how the face of the planet is shifting and what that change means.
Tom Loveland, research scientist with the USGS Earth Resources Observation and Science Center, explains how he uses data — both past and present — to help scientists, natural resource managers, and the public better understand how the face of the planet is shifting and what that change means.
Geometric Desert
Geometric shapes lie across the emptiness of the Sahara Desert in southern Egypt. Each point is a center pivot irrigation field a little less than 1 kilometer (0.6 mile) across. With no surface water in this region, wells pump underground water to rotating sprinklers from the huge Nubian Sandstone aquifer, which lies underneath the desert.
Geometric shapes lie across the emptiness of the Sahara Desert in southern Egypt. Each point is a center pivot irrigation field a little less than 1 kilometer (0.6 mile) across. With no surface water in this region, wells pump underground water to rotating sprinklers from the huge Nubian Sandstone aquifer, which lies underneath the desert.
Related
How is the percentage of cloud cover calculated in a Landsat scene?
The C Function of Mask (CFMask) algorithm is used in Landsat Collection 1 Level-1 data processing. This algorithm provides a full-image “Scene Cloud Cover” estimation of the percentage of cloud cover calculated over an entire Landsat scene. Land Cloud Cover, which is also included, is determined by calculating the percentage of clouds over land-only pixels in a scene using a mask that...
What are Landsat Response Linearization Look Up Tables?
Landsat Response Linearization Look Up Tables (RLUT) are additional files that accompany Calibration Parameter Files (CPFs) and contain a mapping lookup table to linearize the output of the Landsat 8 and Landsat 9 Operational Land Imager (OLI) and Thermal Infrared Sensor (TIRS) detectors. Learn more (and download RLUT files): Landsat Response Linearization Look Up Tables
What is Landsat 7 ETM+ SLC-off data?
Landsat 7 ETM+ SLC-off refers to all Landsat 7 images collected after May 31, 2003, when the Scan Line Corrector (SLC) failed. These products have data gaps but are still useful and maintain the same radiometric and geometric corrections as data collected prior to the SLC failure. The Landsat 7 satellite acquired science data until January 19, 2024. Learn more: Landsat 7
What are Landsat Bias Parameter Files?
Landsat Bias Parameter Files (BPFs) supply radiometric correction parameters that are applied during Level-1 processing of Landsat data. Learn more (and search for BPF files): Landsat Bias Parameter
What are Landsat Calibration Parameter Files?
Landsat Calibration Parameter Files (CPFs) provide radiometric and geometric coefficients needed for processing of raw, uncorrected Landsat image data into Level-1 data products. Over 15,000 coefficients are issued to span distinct timeframes and are updated with improved calibration coefficients. CPFs are often updated with improved coefficients. Learn more (and search CPF files): Landsat...
What is the Landsat Collections Saturation Bits parameter?
The Landsat Collection 2 Level-1 product metadata (MTL.txt) file includes a SATURATION_BAND_ x parameter for each Landsat band. This field indicates the presence of radiometric saturation for each band in every Landsat scene. Learn more: Landsat Collections Level-1 Saturation Bits Parameter
Landsat Collections
Landsat Collections: Providing a Stable Environmental Record for Time Series Analysis
Landsat Collections: Providing a Stable Environmental Record for Time Series Analysis
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 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.
What's the Big Idea? — Charting Change from the Skies
Tom Loveland, research scientist with the USGS Earth Resources Observation and Science Center, explains how he uses data — both past and present — to help scientists, natural resource managers, and the public better understand how the face of the planet is shifting and what that change means.
Tom Loveland, research scientist with the USGS Earth Resources Observation and Science Center, explains how he uses data — both past and present — to help scientists, natural resource managers, and the public better understand how the face of the planet is shifting and what that change means.
Geometric Desert
Geometric shapes lie across the emptiness of the Sahara Desert in southern Egypt. Each point is a center pivot irrigation field a little less than 1 kilometer (0.6 mile) across. With no surface water in this region, wells pump underground water to rotating sprinklers from the huge Nubian Sandstone aquifer, which lies underneath the desert.
Geometric shapes lie across the emptiness of the Sahara Desert in southern Egypt. Each point is a center pivot irrigation field a little less than 1 kilometer (0.6 mile) across. With no surface water in this region, wells pump underground water to rotating sprinklers from the huge Nubian Sandstone aquifer, which lies underneath the desert.
Updated Date: May 5, 2025