NDLI: Possibility of measuring gravity-wave momentum flux by single beam observation of mst radar

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Possibility of measuring gravity-wave momentum flux by single beam observation of mst radar

Content Provider	NASA Technical Reports Server (NTRS)
Author	Liu, C. H.
Copyright Year	1986
Description	Vincent and Reid (1983) proposed a technique to measure gravity-wave momentum fluxes in the atmosphere by mesosphere-stratosphere-troposphere (MST) radars using two or more radar beams. Since the vertical momentum fluxes are assumed to be due to gravity waves, it appears possible to make use of the dispersion and polarization relations for gravity waves in extracting useful information from the radar data. In particular, for an oblique radar beam, information about both the vertical and the horizontal velocities associated with the waves are contained in the measured Doppler data. Therefore, it should be possible to extract both V sub Z and V sub h from a single beam observational configuration. A procedure is proposed to perform such an analysis. The basic assumptions are: the measured velocity fluctuations are due to gravity waves and a separable model gravity-wave spectrum of the Garrett-Munk type that is statistically homogeneous in the horizontal plane. Analytical expressions can be derived that relate the observed velocity fluctuations to the wave momentum flux at each range gate. In practice, the uncertainties related to the model parameters and measurement accuracy will affect the results. A MST radar configuration is considered.
File Size	87604
Page Count	3
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19870001025
Archival Resource Key	ark:/13960/t5v749x0p
Language	English
Publisher Date	1986-06-01
Access Restriction	Open
Subject Keyword	Geophysics Meteorological Radar Earth Atmosphere Radar Beams Variations Momentum Mathematical Models Spectra Polarization Waves Doppler Radar Doppler Effect Dispersion Gravity Waves Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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