Abstract

An equation modeling ir aerosol emission is presented with experimental data and spectra of low temperature steam from laboratory radiometric measurements. The equation, for the 8–13-μ ir continuum, predicts emissions for traces of liquid water aerosol comparable to those from Elsasser’s equation attributed to water vapor. Several curves compare water absorptivity coefficients in the liquid and vapor phases and as applied to atmospheric measurements at the 10.6-μ CO₂ laser wavelength. Results indicate that water aerosols can account for major changes in radiance, even through apparently clear atmospheres. Ice crystals, by implication, represent another fertile field for study as absorbers and emitters.

© 1971 Optical Society of America

Infrared Emission by Fine Water Aerosols and Fogs

H. R. Carlon
Appl. Opt. 9(9) 2000-2006 (1970)

Aerosol spectrometry in the infrared

Hugh R. Carlon
Appl. Opt. 19(13) 2210-2218 (1980)

Refractive Index of Nitrogen, Water Vapor, and Their Mixtures at Submillimeter Wavelengths

C. C. Bradley and H. A. Gebbie
Appl. Opt. 10(4) 755-758 (1971)

Infrared extinction spectra of some common liquid aerosols

Hugh R. Carlon, David H. Anderson, Merrill E. Milham, Theodore L. Tarnove, Robert H. Frickel, and I. Sindoni
Appl. Opt. 16(6) 1598-1605 (1977)

Measurements of the Curves-of-Growth of Hot Water Vapor

C. B. Ludwig
Appl. Opt. 10(5) 1057-1073 (1971)