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The ECCOE Landsat Cal/Val Team continually monitors the geometric and radiometric performance of active Landsat missions and makes calibration adjustments, as needed, to maintain data quality at the highest level.This report provides observed geometric and radiometric analysis results for Landsats 7\u20138 for quarter 2 (April\u2013June), 2021. All data used to compile the Cal/Val analysis results presented in this report are freely available from the USGS EarthExplorer website: https://earthexplorer.usgs.gov.One specific activity that the Cal/Val Team continued to closely monitor this quarter was the Landsat 8 Thermal Infrared Sensor (TIRS) response degradation, which has been observed since the two November 2020 safehold events. Detailed analysis results characterizing this degradation have been included in this report. Additional information about the safehold events is here: https://www.usgs.gov/core-science-systems/nli/landsat/november-19-2020-landsat-8-data-availability-update-recent-safehold.", "description": "vii, 40 p.", "publisher": { "@type": "Organization", "name": "U.S. Geological Survey" }, "author": [ { "@type": "Person", "name": "Kaita, Ed", "givenName": "Ed", "familyName": "Kaita", "affiliation": [ { "@type": "Organization", "name": "SSAI" } ] }, { "@type": "Person", "name": "Brian Markham", "familyName": "Brian Markham", "affiliation": [ { "@type": "Organization", "name": "NASA GSFC" } ] }, { "@type": "Person", "name": "Ong, Lawrence", "givenName": "Lawrence", "familyName": "Ong", "affiliation": [ { "@type": "Organization", "name": "NASA GSFC SSAI" } ] }, { "@type": "Person", "name": "Micijevic, Esad emicijevic@usgs.gov", "givenName": "Esad", "familyName": "Micijevic", "email": "emicijevic@usgs.gov", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": 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