AI-generated Key Takeaways
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ASTER L1T Radiance data has a collection gap between November 28, 2024, and January 16, 2025, due to technical issues.
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The Sentinel-3 OLCI EFR dataset provides top-of-atmosphere radiances in 21 spectral bands globally every ~2 days.
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USGS Landsat datasets (Landsat 4, 5, 7, 8, and 9) offer calibrated top-of-atmosphere (TOA) reflectance in both Tier 1 (highest quality) and Tier 2 collections.
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Landsat 7's orbit has been drifting to an earlier acquisition time since 2017, impacting data acquisition timing.
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ASTER L1T Radiance
Note: There is a gap in data collection between November 28, 2024 and January 16, 2025 due to technical issues with the ASTER instrument. See the USGS announcement for more information. The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) is a multispectral imager that … aster imagery nasa nir radiance satellite-imagery -
Sentinel-3 OLCI EFR: Ocean and Land Color Instrument Earth Observation Full Resolution
The Ocean and Land Color Instrument (OLCI) Earth Observation Full Resolution (EFR) dataset contains top of atmosphere radiances at 21 spectral bands with center wavelengths ranging between 0.4µm and 1.02µm at spatial resolution of 300m with worldwide coverage every ~2 days. OLCI is one of … copernicus esa eu radiance satellite-imagery sentinel -
USGS Landsat 4 TM Collection 2 Tier 1 TOA Reflectance
Landsat 4 TM Collection 2 Tier 1 calibrated top-of-atmosphere (TOA) reflectance. Calibration coefficients are extracted from the image metadata. See Chander et al. (2009) for details on the TOA computation. global landsat satellite-imagery toa usgs -
USGS Landsat 4 TM Collection 2 Tier 2 TOA Reflectance
Landsat 4 TM Collection 2 Tier 2 calibrated top-of-atmosphere (TOA) reflectance. Calibration coefficients are extracted from the image metadata. See Chander et al. (2009) for details on the TOA computation. global landsat satellite-imagery toa usgs -
USGS Landsat 5 TM Collection 2 Tier 1 TOA Reflectance
Landsat 5 TM Collection 2 Tier 1 calibrated top-of-atmosphere (TOA) reflectance. Calibration coefficients are extracted from the image metadata. See Chander et al. (2009) for details on the TOA computation. global landsat satellite-imagery toa usgs -
USGS Landsat 5 TM Collection 2 Tier 2 TOA Reflectance
Landsat 5 TM Collection 2 Tier 2 calibrated top-of-atmosphere (TOA) reflectance. Calibration coefficients are extracted from the image metadata. See Chander et al. (2009) for details on the TOA computation. global landsat satellite-imagery toa usgs -
USGS Landsat 7 Collection 2 Tier 1 TOA Reflectance
Landsat 7 Collection 2 Tier 1 calibrated top-of-atmosphere (TOA) reflectance. Calibration coefficients are extracted from the image metadata. See Chander et al. (2009) for details on the TOA computation. Note that Landsat 7's orbit has been drifting to an earlier acquisition time since 2017. c2 global landsat satellite-imagery toa usgs -
USGS Landsat 7 Collection 2 Tier 1 and Real-Time data TOA Reflectance
Landsat 7 Collection 2 Tier 1 and Real-Time data calibrated top-of-atmosphere (TOA) reflectance. Calibration coefficients are extracted from the image metadata. See Chander et al. (2009) for details on the TOA computation. Note that Landsat 7's orbit has been drifting to an earlier acquisition time … c2 global landsat satellite-imagery toa usgs -
USGS Landsat 7 Collection 2 Tier 2 TOA Reflectance
Landsat 7 Collection 2 Tier 2 calibrated top-of-atmosphere (TOA) reflectance. Calibration coefficients are extracted from the image metadata. See Chander et al. (2009) for details on the TOA computation. Note that Landsat 7's orbit has been drifting to an earlier acquisition time since 2017. c2 global landsat satellite-imagery toa usgs -
USGS Landsat 8 Collection 2 Tier 1 TOA Reflectance
Landsat 8 Collection 2 Tier 1 calibrated top-of-atmosphere (TOA) reflectance. Calibration coefficients are extracted from the image metadata. See Chander et al. (2009) for details on the TOA computation. Landsat scenes with the highest available data quality are placed into Tier 1 and are considered … c2 global landsat satellite-imagery toa usgs -
USGS Landsat 8 Collection 2 Tier 1 and Real-Time data TOA Reflectance
Landsat 8 Collection 2 Tier 1 and Real-Time data calibrated top-of-atmosphere (TOA) reflectance. Calibration coefficients are extracted from the image metadata. See Chander et al. (2009) for details on the TOA computation. Landsat scenes with the highest available data quality are placed into Tier 1 … c2 global l8 landsat lc8 satellite-imagery -
USGS Landsat 8 Collection 2 Tier 2 TOA Reflectance
Landsat 8 Collection 2 Tier 2 calibrated top-of-atmosphere (TOA) reflectance. Calibration coefficients are extracted from the image metadata. See Chander et al. (2009) for details on the TOA computation. Scenes not meeting Tier 1 criteria during processing are assigned to Tier 2. This includes Systematic … c2 global landsat satellite-imagery toa usgs -
USGS Landsat 9 Collection 2 Tier 1 TOA Reflectance
Landsat 9 Collection 2 Tier 1 calibrated top-of-atmosphere (TOA) reflectance. Calibration coefficients are extracted from the image metadata. See Chander et al. (2009) for details on the TOA computation. Landsat scenes with the highest available data quality are placed into Tier 1 and are considered … c2 global landsat satellite-imagery toa usgs -
USGS Landsat 9 Collection 2 Tier 2 TOA Reflectance
Landsat 9 Collection 2 Tier 2 calibrated top-of-atmosphere (TOA) reflectance. Calibration coefficients are extracted from the image metadata. See Chander et al. (2009) for details on the TOA computation. Scenes not meeting Tier 1 criteria during processing are assigned to Tier 2. This includes Systematic … c2 global l9 landsat lc9 satellite-imagery