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News Archive

Landsat 9—Continuing the Legacy

This new four-part video series shares the history of Landsat, how Landsat 9 works, how Landsat data gets from the satellite to the ground, and how Landsat data can be used with other data to support a wide range of research and applications. Enjoy!

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Details of a Greening Arctic

The northern reaches of North America are getting greener, according to a NASA study that provides the most detailed look yet at plant life across Alaska and Canada. In a changing climate, almost a third of the land cover – much of it Arctic tundra – is looking more like landscapes found in warmer ecosystems.

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USGS TIRS Update

Toward the end of April, reprocessing efforts will begin for Landsat 8 OLI/TIRS scenes acquired from January 1 to March 31, along with data acquired during April, to create nominal Level-1 products containing valid TIRS data. 

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Landsat 8 TIRS Updates from USGS

As of Feb. 12, 2016, many of the Landsat 8 scenes acquired from October to December 2015 have been reprocessed into nominal Level-1 products containing valid TIRS data and are available for download, and can also be submitted for higher-level Surface Reflectance data processing via the ESPA On-demand interface.

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Landsat 8 Thermal Data Update

Landsat 8 Thermal Infrared Sensor (TIRS) data continue to be collected with the scene select mirror encoder electronics disabled (mode 0). While in this mode, the TIRS line of sight model (LOS) will be regularly updated and modifications are being made to automate revisions to the LOS in the Level-1 Product Generation System (LPGS).

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TIRS Anomaly

On Nov. 1, 2015 the TIRS instrument experienced an anomalous condition related to the instrument’s ability to accurately measure the location of the Scene Select Mirror.

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