Continuum Absorption By Atmospheric H[sub]2[/sub]O

Darrell E. Burch

doi:10.1117/12.931899

28 July 1981 Continuum Absorption By Atmospheric H₂O

Darrell E. Burch

Proceedings Volume 0277, Atmospheric Transmission; (1981) https://doi.org/10.1117/12.931899
Event: 1981 Technical Symposium East, 1981, Washington, D.C., United States

Abstract

The continuum absorption by H₂O has several characteristics that are common throughout the windows in the infrared and millimeter-wave regions. Values of the continuum absorption coefficient calculated on the basis of simple, widely used line shapes may differ greatly from observed values in the windows between strong absorption lines. The temperature dependence of this absorption is also not predictable from present day understanding of line shapes or of dieters, which may also contribute. The shapes of self-broadened H₂O lines are quite different from those of N₂-broadened lines, and the difference increases with increasing distance from the centers of the lines. Data obtained from laboratory samples and from atmospheric paths are presented to compare the various windows in the infrared and millimeter regions.

Citation Download Citation

Darrell E. Burch "Continuum Absorption By Atmospheric H₂O", Proc. SPIE 0277, Atmospheric Transmission, (28 July 1981); https://doi.org/10.1117/12.931899

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