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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 will monitor the pulse of the Earth to better understand climate change. The foundation for CLARREO is the ability to produce highly accurate and trusted climate records. These tested climate records can be used to lay the groundwork for informed decisions on mitigation and adaptation policies that address the effects of climate change on society.
What is CLARREO Pathfinder?
In 2016, CLARREO received authorization to conduct a Pathfinder mission called CLARREO Pathfinder (CPF). Its goal is to reduce risk, demonstrate essential techniques and technologies, and advance the science for a full CLARREO mission.

The CPF instrument is a reflected solar spectrometer that measures energy from the sun reflected back from Earth. Benefits of CPF include demonstrating improved measurement accuracy by factors of 5-10 and demonstrating the ability to inter-calibrate with other Earth-observing sensors.

CPF is scheduled to launch to the ISS in the 2021 timeframe.
CLARREO Spotlight
Recent News & Articles
Boulder, CO
May 17-19, 2017
+ View the Agenda

CLARREO Pathfinder Factsheet
+ View the PDF Document

CLARREO Pathfinder
Passes KDP-A Review
January 12, 2017

Hampton, VA
Nov. 29 - Dec. 1, 2016
+ View the Agenda

CLARREO Pathfinder Passes Mission Concept Review
August 24, 2016

Economic Value of an Improved Climate Observing System
+ View the PDF Document

Full CLARREO Mission Factsheet
+ View the PDF Document