Application of Fourier-Spectroradiometer to Analyse Irreversible Chemical and physical processes in Nature

Using the prototype of the mobile Fourier spectroradiometer (operation range 800-1200 cm^-1, resolution 4 cm^-1 and scanning time less than 0,3 s) a cycle of full-scale tests to determine the minimum registered contamination concentrations has been performed with clouds of ammonia and ethanol vapours used as an example. The possibility of detecting the ammonia vapours at a level of 2-4 ррm • m, the ethanol vapours at a level of 10-15ррm • m is demonstrated. Absolute luminescence spectra and luminance temperatures of surfaces underneath the examined survey traces (clear sky, continuous cloudiness and radiation of topographic objects) are given.