Albedometer
An albedometer is a device that can measure both the reflected radiation flux coming from above and the reflected radiation flux coming from below . It consists of two radiation measuring devices aligned with one another.
Two pyranometers can be used to measure short-wave radiation ; such an albedometer is also called a double pyranometer or double pyranometer . It only measures the short-wave global radiation from the sun and the short-wave radiation reflected from the surface below the pyranometer - for example the ground. It measures radiation in the range from 0.3 µm to 2.8 µm; the long-wave radiation is filtered out through two glass domes.
Pyrgeometers can also be used to measure long-wave atmospheric counter-radiation and its long-wave reflected radiation .
The albedo , i.e. the reflectivity of the reflecting surface, can be calculated from the ratio of the two radiation flows . In addition, the short-wave radiation balance can be determined from the values .
Web links
- Albedometer. Entry in the spectrum lexicon of geography.
- Weather dictionary: Albedometer. On Wetter.de .