The Lyman-alpha Hygrometer is an in situ hygrometer that can be deployed on airborne or ground-based platforms. It measures water vapor absorption at the Lyman-alpha wavelength (121.6 nm) of atomic hydrogen to determine the total water in the atmosphere. It has a detection limit of 0.1 ppmv and a typical data rate of 1 second. The Lyman-alpha hygrometer provides water vapor measurements with an accuracy of 6% and a precision of 5%.
Instrument Details
- Temperature/Humidity
- Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Indicators > Water VaporEarth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Profiles > Water Vapor Mixing Ratio ProfilesEarth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Indicators > Total Precipitable WaterEarth Science > Atmosphere > Atmospheric Water Vapor
- Lower Stratosphere, Troposphere
- 1 second
- Point
- 2465.4 THz
- https://www.eol.ucar.edu/instruments/ultraviolet-absorption-hygrometer
Ken Kelly
Ken Kelly
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NOAA
Currently unavailable
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