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In 2016, the CLARREO project received funding for a CLARREO Pathfinder mission to demonstrate essential measurement technologies required for the full CLARREO mission. The appropriated funds support the flight of one instrument, a Reflected Solar spectrometer, hosted on the International Space Station (ISS) in the 2020 time frame. + Learn more about the CLARREO Pathfinder.

What is CLARREO?
The Climate Absolute Radiance and Refractivity Observatory (CLARREO) mission, led and developed by NASA and partner organizations, will monitor the pulse of the Earth to better understand climate change.

CLARREO is a climate-focused mission that will become a key element of the climate observing system.

The foundation for CLARREO is the ability to produce highly accurate and trusted climate records. Measurements derived from CLARREO will be used to detect climate trends and to test, validate, and improve climate prediction models.

The CLARREO mission will provide accurate, credible, and tested climate records that lay the groundwork for informed decisions on mitigation and adaptation policies that address the effects of climate change on society.
CLARREO Spotlight
Recent News & Articles
Ann Arbor, MI
May 10-12, 2016
+ View the Agenda

CLARREO Pathfinder Science Team Summary Report
June 2016
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CLARREO Science Team Summary Report
May 2016
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Economic Value of an Improved Climate Observing System
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2016 CLARREO Pathfinder Executive Summary
+ View the PDF Document

 2016 Full CLARREO Mission Brief
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 2014 Full CLARREO Mission
Exec Summary
+ View the PDF Document