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This is the home page of the 2007 Decadal Survey-recommended NASA CLARREO mission, which is no longer active. As a result, the website for this mission has been discontinued.

The NASA CLARREO Pathfinder (CPF) began in 2016 and is scheduled to be hosted on the International Space Station (ISS) in 2023. Learn more about this on-going mission that will help us better understand Earth’s changing climate here. Selected documents and information from the discontinued CLARREO mission webpage can also be found at the CPF website.