An Evaluation of a 94-GHz Radar for Remote Sensing of Cloud PropertiesSource: Journal of Atmospheric and Oceanic Technology:;1995:;volume( 012 ):;issue: 002::page 201Author:Clothiaux, E. E.
,
Miller, M. A.
,
Albrecht, B. A.
,
Ackerman, T. P.
,
Verlinde, J.
,
Babb, D. M.
,
Peters, R. M.
,
Syrett, W. J.
DOI: 10.1175/1520-0426(1995)012<0201:AEOAGR>2.0.CO;2Publisher: American Meteorological Society
Abstract: The performance of a 94-GHz radar is evaluated for a variety of cloud conditions. Descriptions of the radar hardware, signal processing, and calibration provide an overview of the radar's capabilities. An important component of the signal processing is the application of two cloud-mask schemes to the data to provide objective estimates of cloud boundaries and to detect significant returns that would otherwise be discarded if a simple threshold method for delectability was applied to the return power. Realistic profiles of atmospheric pressure, temperature, and water vapor are used in a radiative transfer model to address clear-sky attenuation. A physically relevant study of beam extinction and backscattering by clouds is attempted by modeling cloud drop size distributions with a gamma distribution over a range of number concentrations, particle mean diameters, and distribution shape factors; cloud liquid water contents and mean drop size diameters reported in the literature are analyzed in this context. Results of observations of a number of cloud structures, including marine strato- cumulus, cirrus, and stratus and cirrus associated with a midlatitude cyclone are described.
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contributor author | Clothiaux, E. E. | |
contributor author | Miller, M. A. | |
contributor author | Albrecht, B. A. | |
contributor author | Ackerman, T. P. | |
contributor author | Verlinde, J. | |
contributor author | Babb, D. M. | |
contributor author | Peters, R. M. | |
contributor author | Syrett, W. J. | |
date accessioned | 2017-06-09T13:58:35Z | |
date available | 2017-06-09T13:58:35Z | |
date copyright | 1995/04/01 | |
date issued | 1995 | |
identifier issn | 0739-0572 | |
identifier other | ams-1020.pdf | |
identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4145291 | |
description abstract | The performance of a 94-GHz radar is evaluated for a variety of cloud conditions. Descriptions of the radar hardware, signal processing, and calibration provide an overview of the radar's capabilities. An important component of the signal processing is the application of two cloud-mask schemes to the data to provide objective estimates of cloud boundaries and to detect significant returns that would otherwise be discarded if a simple threshold method for delectability was applied to the return power. Realistic profiles of atmospheric pressure, temperature, and water vapor are used in a radiative transfer model to address clear-sky attenuation. A physically relevant study of beam extinction and backscattering by clouds is attempted by modeling cloud drop size distributions with a gamma distribution over a range of number concentrations, particle mean diameters, and distribution shape factors; cloud liquid water contents and mean drop size diameters reported in the literature are analyzed in this context. Results of observations of a number of cloud structures, including marine strato- cumulus, cirrus, and stratus and cirrus associated with a midlatitude cyclone are described. | |
publisher | American Meteorological Society | |
title | An Evaluation of a 94-GHz Radar for Remote Sensing of Cloud Properties | |
type | Journal Paper | |
journal volume | 12 | |
journal issue | 2 | |
journal title | Journal of Atmospheric and Oceanic Technology | |
identifier doi | 10.1175/1520-0426(1995)012<0201:AEOAGR>2.0.CO;2 | |
journal fristpage | 201 | |
journal lastpage | 229 | |
tree | Journal of Atmospheric and Oceanic Technology:;1995:;volume( 012 ):;issue: 002 | |
contenttype | Fulltext |