QUANTITATIVE SPECTROSCOPY WITH FOURIER TRANSFORM INSTRUMENTS

Abstract

The accuracy of measurements, particularly of intensities, using Fourier transform spectrometers has improved greatly over the last ten years. It is now possible to make intensity measurements which are reliable to about 1% which is perhaps better than actually needed by atmospheric physicists. The process by which FT data can be reduced to intensity, lineshape and positional information will be reviewed. Particular attention will given to measurements made at relatively long wavelengths where thermal radiation from room temperature sources must be properly accounted for.