A pyrgeometer is a ground-based or airborne passive radiation sensor that measures downward and upward longwave radiation in the 4-50 μm spectral range. It uses a thermopile sensor to detect changes in resistance or voltage, which are then used to determine longwave radiation. These measurements can be used to calculate the infrared radiation flux. Pyrgeometers are typically used for climatological, meteorological, and agricultural applications.

Instrument Details
- Radiation
- Earth Science > Atmosphere > Atmospheric RadiationEarth Science > Atmosphere > Atmospheric Radiation > Outgoing Longwave RadiationEarth Science > Atmosphere > Atmospheric Radiation > Longwave Radiation
- Boundary Layer, Land Surface, Troposphere
- Variable
- Variable
- 6-75 THz
- Currently unavailable
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Currently unavailable
Varies
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