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[A001] Average Path Profile of Atmospheric Temperature and Humidity Structure Parameters from a Microwave Profiling Radiometer

National Aeronautics and Space Administration, Glenn Research Center, Cleveland, OH 44135
15 July 2016
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Abstract

The values of the key atmospheric turbulence parameters (structure constants) for temperature and water vapor, i.e., CT2, and CQ2, are highly dependent upon the vertical height within the atmosphere thus making it necessary to specify profiles of these values along the atmospheric propagation path. The remote sensing method suggested and described in this work makes use of a rapidly integrating microwave profiling radiometer to capture profiles of temperature and humidity through the atmosphere. The integration times of currently available profiling radiometers are such that they are approaching the temporal intervals over which one can possibly make meaningful assessments of these key atmospheric parameters. These integration times, coupled with the boundary effects of the Earth’s surface are, however, unconventional for turbulence characterization; the classical Kolmogorov turbulence theory and related 2/3 law for structure functions prevalent in the inertial sub-range are no longer appropriate. An alternative to this classical approach is derived from first principles to account for the nuances of turbulent mechanics met with using radiometer sensing, i.e., the large-scale turbulence driven by the various possible boundary conditions within the buoyancy sub-range. Analytical expressions connecting the measured structure functions to the corresponding structure parameters are obtained. The theory is then applied to an experimental scenario involving radiometric profile measurements of temperature and shows very good results.

Keywords

temperature structure constant; humidity structure constant; path profiles; remote sensing; atmospheric turbulence theory; profiling radiometer

Cite this article as

Manning, R. Average Path Profile of Atmospheric Temperature and Humidity Structure Parameters from a Microwave Profiling Radiometer. In Proceedings of the 1st Int. Electron. Conf. Atmos. Sci., 16–31 July 2016; Sciforum Electronic Conference Series, Vol. 1, 2016 , A001; doi:10.3390/ecas2016-A001

Copyright & Licensing

Copyright by the author(s). This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).

Presentation

Author biographies

Robert Manning
Robert M. Manning received the B.Sc., M.Sc., and Ph.D. degrees in physics from Case Western Reserve University. His specialty is stochastic electromagnetic wave propagation through random media. He was responsible for the development of the statistical rain attenuation prediction model that was used in the design and development of NASA’s Advanced Communications Technology Satellite (ACTS). He has successfully conducted an analysis of electromagnetic wave propagation through hypersonically-induced plasmas that provides a solution for the classical problem of communications blackout during spacecraft re-entry into the atmosphere. He has also been involved with the analysis of the non-linear propagation issues associated with high-energy laser beam transmission through the atmosphere for beamed energy propulsion. He also provides theoretical development of various propagation scenarios met with in microwave and optical communications. He is the author of over 50 publications. He is listed in American Men and Women of Science and the Who’s Who in Optical Science.

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