This site is moving to  Please visit the new site and update any bookmarks you have. 

December 19, 2014 - TIRS Calibration Reconfiguration

At 10:34 am (CST) the configuration of the TIRS instrument on Landsat 8 was reconfigured due to detection of anomalous current levels associated with the scene select mirror encoder electronics. (Read More)

January 29, 2014 - Landsat 8 Reprocessing to Begin February 3, 2014

On February 3, 2014, the entire Landsat 8 archive will be cleared from the online cache and reprocessed to take advantage of calibration improvements identified during its first year of operation. All Landsat 8 scenes will be removed from the online cache at this time and these data will be reprocessed starting with the most recent acquisitions and proceeding back to the beginning of the mission. (Read More)

January 23, 2014 - Immediate TIRS Data Adjustment

An incorrect bias adjustment for Thermal Infrared Sensor (TIRS) data was discovered in the latest release of the Landsat 8 processing system, which has caused a significant error in the TIRS products produced from Landsat 8 scenes acquired from January 14, 2014 to January 23, 2014. (Read More)

March 8, 2013 - Landsat 7 Lifetime Calibration Update

The Calibration team has recently documented that the gains of the reflective bands have degraded over the past 14 years. On April 1, 2013, an update to the Landsat 7 processing will correct images for this degradation. All of the Landsat 7 data on the online server will be purged. Newly acquired data will be automatically processed, and users will need to request historical data for processing.

March 24, 2011 - MSS orders held until April 1st

Starting on Friday, March 25th, MSS orders will be held so that radiometric enhancements can be implemented. MSS processing will recommence on April 1st, and notices will be sent, as typical, when scenes are completed. For more information on these enhancements, please see the L1-5 MSS Calibration page.

March 13, 2011 - Pending MSS and L4 TM Calibration Release

In the upcoming weeks, the Landsat Project will incorporate new radiometric enhancements for all Multi-Spectral Scanner (MSS) and Landsat 4 Thematic Mapper (TM) thermal data. A notice will be posted when the new calibrations are released in early April. At that time, all processed MSS and Landsat 4 TM data will be purged from the servers in order to ensure that all future MSS and L4 TM data have the new calibrations applied.

June 16, 2006 - Draft version of Special Calibration Test Requirements documents

A draft version of the LDCM requirements documents, the Special Calibration Test Requirements (Thermal option addendum), was made available for review and comment.