Title
One full-day radar measurement of lower stratospheric winds over Jicamarca
Date Issued
01 January 1978
Access level
metadata only access
Resource Type
journal article
Author(s)
Radio Observatorio de Jicamarca
Publisher(s)
Elsevier
Abstract
The lower stratospheric wind field is measured simultaneously at several altitudes for 24 h on 23-24 May 1974 using the Jicamarca radar in Peru. Maximum entropy spectral analysis is used to estimate echo power spectra from the measured autocorrelation functions which are truncated beyond the maximum time lag of 6.65 s. The fluctuating wind velocity is resolved into steady and tidal components. A vertical shear of 2-3 m s-1 km-1 is observed throughout the time of observation in the zonal wind. The mean zonal wind is in good agreement with the Lima-Callao radiosonde data obtained in the same month. A very large diurnal component, of amplitude 1-5 m s-1 is observed in the zonal wind in the lower stratosphere. However it appears that a semidiurnal oscillation below the tropopause is predominant. © 1978.
Start page
1331
End page
1337
Volume
40
Issue
12
Language
English
OCDE Knowledge area
Meteorología y ciencias atmosféricas
Scopus EID
2-s2.0-0012125990
Source
Journal of Atmospheric and Terrestrial Physics
ISSN of the container
00219169
Sponsor(s)
Acknowledgements-Thaeu thorsw ish to thank Dr. I. HIROTA, MeteorologicaDl epartmentK,y oto University, for useful suggestionasn d interestingc ommentsT. he JicamarcaR adii Observatoryis operatedb y the Institute Geofisicod e1P eru. Supportf or this researchw asprovided by the Ministry of Education in Japan under Grant Nos. 146034a nd 264124.T WOof the authors( R. M. H. and W. E. G.) were supportedb y the U.S. National Science Foundation under grants ATM77-20240 and ATM75-19337,r espectively.
Sources of information:
Directorio de Producción Científica
Scopus