HR: 0830h
AN: A21E-1032    [PDF]
TI: Photoacoustic Spectroscopic Measurements on Super-saturated Water Vapor
AU: * Varanasi, P
EM: pvaranasi@notes.cc.sunysb.edu
AF: Institute for Terrestrial and Planetary Atmospheres, Marine Sciences Research Center, State University of New York at Stony Brook, Stony Brook, NY 11794-5000 United States
AU: Ranganayakamma, B
AF: Science & Engineering Services Inc., 6992 Columbia Gateway Drive, Columbia, MD 21046 United States
AU: Mathur, S
AF: Science & Engineering Services Inc., 6992 Columbia Gateway Drive, Columbia, MD 21046 United States
AU: Refaat, T
AF: Science & Engineering Services Inc., 6992 Columbia Gateway Drive, Columbia, MD 21046 United States
AU: Prasad, C R
AF: Science & Engineering Services Inc., 6992 Columbia Gateway Drive, Columbia, MD 21046 United States
AB: During the intense debate that followed the discovery, a few year ago, that the atmosphere was absorbing more of the short wave solar radiation than originally allowed in the models, a suggestion was made that the shortwave absorption of water vapor be examined under thermodynamic conditions of saturation and super-saturation. In order to address this concern we devised a photoacoustic absorption chamber in which super-saturated water vapor could be carefully controlled and its short-wave spectrum recorded using photo-acoustic spectroscopy. We present the final results of our experimental study, which was conducted at levels S of super-saturation as high as 1.3, and discuss its implications on the atmospheric application.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0320 Cloud physics and chemistry
DE: 0365 Troposphere--composition and chemistry
DE: 1610 Atmosphere (0315, 0325)
DE: 3359 Radiative processes
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting