Earth Radiation Budget Radiometers
"The Earth’s radiation budget is the balance between the incoming radiation from the Sun and the outgoing reflected and scattered solar radiation plus the thermal infrared emission to space." (European Space Agency (ESA) 2018)
European Space Agency (ESA). 2018. “Satellite Earth Observations in Support of the Sustainable Development Goals.” The CEOS Earth Observation Handbook. Special 2018 Edition.