Chilled Mirror Hygrometers (CMHs) are in situ sensors that directly measure dew point temperature by collecting water vapor on a chilled mirror surface. The mirror's temperature is lowered with thermoelectric coolers until water vapor from the sample gas condenses as dew or frost. The mirror's temperature is then measured using a platinum resistance thermometer (PRT) to determine the dew point and humidity. CMHs have been utilized on both airborne and ground-based platforms and serve as the NIST traceable reference standard for calibrating other sensors.
Instrument Details
- Temperature/Humidity
- Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Indicators > HumidityEarth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Dew Point TemperatureEarth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Indicators > Dew Point TemperatureEarth Science > Atmosphere > Atmospheric Temperature > Upper Air Temperature > Dew Point Temperature
- Land Surface, Troposphere
- Variable
- Point
- N/A
- Currently unavailble
Currently unavailable
Currently unavailable
Varies
Currently unavailable
Currently unavailable
Currently unavailable
Filter data products from this instrument by specific campaigns, platforms, or formats.