The NOAA CH4 is an in situ airborne near-infrared tunable diode laser (TDL) absorption spectrometer. The laser is tuned to the methane (CH4) absorption line at 1.653 μm and measures the intensity of the transmitted radiation. The CH4 concentration is then determined using the Beer-Lambert law. NOAA CH4 scans continuously over the CH4 absorption at a rate of 0.25 to 0.5 kHz and has a typical integration time of 2 seconds.
Instrument Details
- Spectrometer/Radiometer
- Earth Science > Atmosphere > Atmospheric ChemistryEarth Science > Atmosphere > Atmospheric Chemistry > Carbon And Hydrocarbon Compounds > Methane
- Troposphere
- 2 s
- Point
- 181.4 THz
- Currently unavailble
Erik Richard
Erik Richard
NOAA
Currently unavailable
Currently unavailable
Unpublished
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