The Closed-path Laser Hygrometer (CLH) is an in situ airborne tunable diode laser hygrometer developed by the University of Colorado and the Jet Propulsion Laboratory (JPL). It uses second-harmonic absorption spectroscopy to measure atmospheric water vapor. It operates at the 1.37 μm wavelength and has a measurement frequency of 0.8 Hz.
Instrument Details
- Temperature/Humidity
- Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Indicators > Water VaporEarth Science > Atmosphere > Atmospheric Water Vapor
- Troposphere
- 0.8 Hz
- Point
- 218.8 THz
- https://doi.org/10.1175/JTECH1975.1
Linnea Avallone, Darin Toohey
Linnea Avallone
University of Colorado, JPL
NASA’s Radiation Sciences Program
Currently unavailable
Unpublished
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