A pyrheliometer is a ground-based passive radiation sensor. It is used to measure direct beam solar irradiance. Pyrheliometers use a thermopile that converts heat from sunlight to an electrical signal to determine solar radiation. Pyrheliometers measure solar radiation in the 200-4000 nm wavelength range.

Instrument Details
- Radiation
- Earth Science > Atmosphere > Atmospheric Radiation > Solar IrradianceEarth Science > Atmosphere > Atmospheric Radiation > Solar RadiationEarth Science > Atmosphere > Atmospheric Radiation
- Land Surface
- Variable
- Variable
- 75-1500 THz
- Currently unavailble
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Varies
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