Abstract

The paper considers the application of broadband emission radiometry in the submillimeter (very far infrared) spectral region for studies of stratospheric water vapor. The detailed spectroscopy of the region is discussed and the effects of spectral contamination due to emission lines of other constituents, notably O3 and O2, and to a lesser extent N2, are determined quantitatively. The O3 lines arise through electric dipole transitions, the O2 lines through magnetic dipole transitions, and the N2 emission results from collision-induced electric dipole effects. Under certain circumstances, emission from these other species can represent a significant fraction of that due to H2O itself; it must either be corrected for rather carefully or eliminated in the design of the instrument.

© 1980 Optical Society of America

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