The Radiation Budget Instrument (RBI) is a scanning

radiometer A radiometer or roentgenometer is a device for measuring the radiant flux (power) of electromagnetic radiation. Generally, a radiometer is an infrared radiation detector or an ultraviolet detector. Microwave radiometers operate in the micro ...

capable of measuring

Earth Earth is the third planet from the Sun and the only astronomical object known to Planetary habitability, harbor life. This is enabled by Earth being an ocean world, the only one in the Solar System sustaining liquid surface water. Almost all ...

's reflected sunlight and emitted

thermal radiation Thermal radiation is electromagnetic radiation emitted by the thermal motion of particles in matter. All matter with a temperature greater than absolute zero emits thermal radiation. The emission of energy arises from a combination of electro ...

. The project was cancelled on January 26, 2018;

NASA The National Aeronautics and Space Administration (NASA ) is an independent agencies of the United States government, independent agency of the federal government of the United States, US federal government responsible for the United States ...

cited technical, cost, and schedule issues and the impact of anticipated RBI cost growth on other programs. RBI was scheduled to fly on the

Joint Polar Satellite System The Joint Polar Satellite System (JPSS) is the latest generation of U.S. polar-orbiting, non-geosynchronous, environmental satellites. JPSS will provide the global environmental data used in numerical weather prediction models for forecasts, and ...

2 (JPSS-2) mission planned for launch in November 2021; the JPSS-3 mission planned for launch in 2026; and the JPSS-4 mission planned for launch in 2031. The one on JPSS-2 would have been the 14th in the series that started with the Earth radiation budget instruments launched in 1985, and would have extended the unique global climate measurements of the Earth's

radiation In physics, radiation is the emission or transmission of energy in the form of waves or particles through space or a material medium. This includes: * ''electromagnetic radiation'' consisting of photons, such as radio waves, microwaves, infr ...

budget provided by the

Clouds and the Earth's Radiant Energy System Clouds and the Earth's Radiant Energy System (CERES) is an NASA climatological experiment from Earth orbit. The CERES are scientific satellite instruments, part of NASA's Earth Observing System (EOS), designed to measure solar-reflected and Eart ...

(CERES) instruments since 1998.

References

External links

* * * {{USGovernment, url=https://www.nasa.gov/press/2014/may/nasa-awards-radiation-budget-instrument-contract/#.VVVfHnUVhBc, title=NASA Awards Radiation Budget Instrument Contract, agency=NASA Electromagnetic radiation meters Radiometry