The Tunable Infrared Laser Direct Absorption Spectrometer (TILDAS) is an in situ spectrometer developed by Aerodyne Research. It measures gas concentrations by determining how much light the species absorbs at a specific wavelength. TILDAS is used to detect various trace gases, including methane, nitrous oxide, nitrogen dioxide, carbon monoxide, carbon dioxide, formaldehyde, and ammonia. The laser operates within the mid-infrared spectrum and is tuned to a specific wavelength based on the target species. It provides measurements at a data rate of up to 10 Hz. TILDAS can be deployed on aircraft, ships, trucks, and other ground-based platforms.

Instrument Details
- Spectrometer/Radiometer
- Earth Science > Atmosphere > Atmospheric Chemistry > Carbon And Hydrocarbon Compounds > Carbon MonoxideEarth Science > Atmosphere > Atmospheric Chemistry > Nitrogen Compounds > Nitrous OxideEarth Science > Atmosphere > Atmospheric Chemistry > Nitrogen Compounds > AmmoniaEarth Science > Atmosphere > Atmospheric Chemistry > Carbon And Hydrocarbon Compounds > FormaldehydeEarth Science > Atmosphere > Atmospheric Chemistry > Nitrogen Compounds > Nitric OxideEarth Science > Atmosphere > Atmospheric Chemistry > Carbon And Hydrocarbon Compounds > MethaneEarth Science > Atmosphere > Atmospheric Chemistry > Carbon And Hydrocarbon Compounds > Carbon DioxideEarth Science > Atmosphere > Atmospheric Chemistry > Trace Gases/trace SpeciesEarth Science > Atmosphere > Atmospheric ChemistryEarth Science > Atmosphere > Atmospheric Chemistry > Nitrogen CompoundsEarth Science > Atmosphere > Atmospheric Chemistry > Nitrogen Compounds > Nitrogen DioxideEarth Science > Atmosphere > Atmospheric Chemistry > Sulfur Compounds > Carbonyl SulfideEarth Science > Atmosphere > Atmospheric Chemistry > Carbon And Hydrocarbon Compounds
- Troposphere
- 1-10 Hz
- Point
- Variable
- Currently unavailble
Currently unavailable
Currently unavailable
Aerodyne Research
Currently unavailable
Currently unavailable
- Atmospheric Science Data Center (ASDC)
data center outside NASA
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