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A study of gravity-wave spectra in the troposphere and stratosphere at 5-min to 5-day periods with the poker flat mst radar
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Rastogi, P. K. Balsley, B. B. Bemra, R. S. |
| Copyright Year | 1986 |
| Description | An analysis of frequency spectra at periods of about 5 days to 5 min from two 20-day sets of velocity measurements in the stratosphere and troposphere region obtained with the Poker Flat mesosphere-stratosphere-troposphere (MST) radar during January and June, 1984 is presented. A technique based on median filtering and averaged order statistics for automatic editing, smoothing and spectral analysis of velocity time series contaminated with spurious data points or outliers is outlined. The validity of this technique and its effects on the inferred spectral index was tested through simulation. Spectra obtained with this technique are discussed. The measured spectral indices show variability with season and height, especially across the tropopause. The discussion briefly outlines the need for obtaining better climatologies of velocity spectra and for the refinements of the existing theories to explain their behavior. |
| File Size | 442382 |
| Page Count | 9 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19870001029 |
| Archival Resource Key | ark:/13960/t9d55hs42 |
| Language | English |
| Publisher Date | 1986-06-01 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Statistical Analysis Time Series Analysis Troposphere Variations Stratosphere Computerized Simulation Spectra Velocity Atmospheric Turbulence Radar Height Seasons Kinetic Energy Wind Meteorology 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 |
