Category: Technical News

News Archive

Landsat 8 Reprocessing Rescheduled (Revised)

The majority of the radiometric calibration changes indicated in the October 25, 2013 calibration notice have been deferred to early-2014, to coincide with a software update for the Landsat Product Generation System (LPGS). Therefore, reprocessing of the entire Landsat 8 archive will not occur before early-2014.

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Landsat Update: Upcoming Landsat 8 Reprocessing

Within the next several weeks, all Landsat 8 data that have been acquired since achieving WRS-2 operational orbit will be reprocessed using updated calibration parameters for OLI and TIRS data. During this time, all online products will be purged and the online inventory will be re-populated.

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Landsat 7 Thermal Band Calibration Update

Effective October 1, 2013, the calibration of the Landsat 7 Enhanced Thematic Mapper Plus (ETM+) Band 6 will be updated to correct a bias error that has been present in all thermal data since the last calibration update in 2010. Vicarious calibration teams detected a bias error of 0.036 watts per square meter steradian micron (W/(m2 sr µm)) that causes overestimation of top-of-atmosphere temperatures by approximately 0.26 Kelvin (K) at 300K. Calibration parameters within the Calibration Parameter File (CPF) have been adjusted to correct for this bias error.

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Landsat 8 CPF Update Following Safehold

On September 19, 2013 (DOY 262) at approximately 20:08 UTC, Landsat 8 experienced an unplanned transition to safe hold following an attitude control anomaly. Precision attitude control was recovered and imaging operations resumed on day of year 264 (September 21, 2013).

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ESA Makes Never-Before-Seen Landsat Data Available

Thousands of never-before-seen data products from the U.S. Landsat satellites acquired over 30 years have been released for online access. In addition, the newest data over Europe from the latest satellite in the series, Landsat 8, are now accessible in near-real time through a new portal hosted by ESA.

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Landsat 8 Status Update for Aug. 8, 2013

Landsat 8 officially began normal operations on May 30, 2013, when the leadership for satellite operations transferred from NASA to the U.S. Geological Survey. With the hand-off, the name of the satellite changed from the Landsat Data Continuity Mission to Landsat 8. The USGS now manages the satellite flight operations team within the Mission Operations Center, which remains located at NASA’s Goddard Space Flight Center in Greenbelt, Md.

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USGS Makes Landsat 8 QA Data Tool Available

Based on functionality developed by the Moderate Resolution Imaging Spectroradiometer (MODIS) Land Data Operational Product Evaluation (LDOPE) team at Goddard Space Flight Center, the Toolbelt can be downloaded as a zip file that contains the executables compiled for Linux 32-Bit, Linux 64-Bit, Windows 32-Bit, and Windows 64-Bit systems, accompanied by the source code and a readme file.

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