The Closed-path Laser Hygrometer (CLH) is a tunable diode laser hygrometer that was developed by the University of Colorado along with the Jet Propulsion Laboratory (JPL). The CLH measures water vapor via second-harmonic absorption spectroscopy. It provides measurements approximately every 1.5 seconds and operates at the 1.37 μm wavelength.
Instrument Details
- Temperature/Humidity
- Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Indicators > Water Vapor
- Troposphere
- 1.5s
- N/A
- 219 THz
- https://doi.org/10.1175/JTECH1975.1
Linnea Avallone, Darin Toohey
Linnea Avallone
University of colorado, JPL Microdevices Laboratory
NASA’s Radiation Sciences Program
Currently unavailable
Unpublished
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