Home – Home – Jornals – Atmospheric and Oceanic Optics 2013 number 4

In this work we use numerical simulation to estimate possible errors of the differential-absorption retrieval of concentrations of such gaseous biomarkers as СН₄, СО, NH₃, N₂O, С₂Н₆, and H₂S from the three-component gas mixture absorption spectra in the 2–4 mm spectral region. The gas mixture is supposed to simulate an expired air. The absorption spectra were calculated with a resolution of 2 cm^–1 using the HITRAN database. The impact of subtraction of the water vapor absorption from the simulated spectra on the error in retrieved concentrations of the gases-biomarkers was studied. The water vapor concentration in the mixture was determined from absorption at 3800 cm^–1.