Photoacoustic Spectroscopic Measurements on Super-saturated Water Vapor
Abstract
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.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2003
- Bibcode:
- 2003AGUFM.A21E1032V
- Keywords:
-
- 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 0320 Cloud physics and chemistry;
- 0365 Troposphere: composition and chemistry;
- 1610 Atmosphere (0315;
- 0325);
- 3359 Radiative processes