An official website of the United States government
Here's how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
New Ground Control Points (GCPs) will become available for three WRS-2 path/rows and GCPs contained within large water bodies will be removed on February 3, 2014 to coincide with the Landsat 8 archive reprocessing.
As a consequence of the improved GCPs, scenes once created as a systematic Level-1GT (L1GT) product may now process to a precision Level-1T (L1T) product.
More details can be found in the January 16, 2014 Calibration Notice.