Water vapor microwave continuum absorption: A comparison of measurements and models
TL;DR: In this article, a reanalysis of some of these measurements leads to the conclusion that the laboratory data are best represented by a combination of Liebe's [1987] millimeter-wave propagation model (MPM) for the foreignbroadened component of the water continuum and the 1993 version of MPM for the self-broadened components.
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Abstract: Measurements, made in different laboratories, of absorption by water vapor in microwave windows are compared with models for the water vapor continuum. A reanalysis of some of these measurements leads to the conclusion that the laboratory data are best represented by a combination of Liebe's [1987] millimeter-wave propagation model (MPM) for the foreign-broadened component of the water continuum and the 1993 version of MPM for the self-broadened component. This combined model is validated by comparison with measurements of atmospheric microwave emission.
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References
The hitran molecular database: editions of 1991 and 1992
Laurence S. Rothman,Robert R. Gamache,R. H. Tipping,Curtis P. Rinsland,Mary Ann H. Smith,D. Chris Benner,V. Malathy Devi,J. M. Flaud,Claude Camy-Peyret,Agnes Perrin,A. Goldman,Steven T. Massie,Linda R. Brown,Robert A. Toth +13 more
TL;DR: The HITRAN molecular absorption database as mentioned in this paper contains line parameters for 31 species and their isotopomers that are significant for terrestrial atmospheric studies, including chlorofluorocarbons and other molecular species that are not amenable to line-by-line representation.
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MPM—An atmospheric millimeter-wave propagation model
TL;DR: In this paper, the authors characterized the neutral atmosphere for the frequency range from 1 to 300 GHz as a nonturbulent propagation medium and predicted attenuation and propagation delay effects from meteorological data sets: pressure, temperature, humidity, suspended particle concentration, and rain rate.
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Line shape and the water vapor continuum
TL;DR: In this article, the contribution of the far wings of collisionally broadened spectral lines to the water vapor continuum absorption is established, and the effects of deviations from the impact (Lorentz) line shape due to duration of collision effects are treated semi-empirically to provide agreement with experimental results for the continuum absorption and its temperature-dependence.
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Atmospheric remote sensing by microwave radiometry
Michael A. Janssen
- 01 Jan 1993
TL;DR: The Passive Microwave Remote Sensing of Earth's Stratosphere from Radio Astronomical Observations is described in this article, where the ground-based radio path delay from Satellites using microwave radiometry is estimated.
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Propagation Modeling of Moist Air and Suspended Water/Ice Particles at Frequencies Below 1000 GHz
Hans J. Liebe
- 01 Nov 1993
TL;DR: In this paper, the effect of the Earth's magnetic field on O2 absorption lines is investigated for the frequency range from 1 to 1000 GHz (1 THz) by the modular millimeter-wave propagation model MPM.
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