S. Singh et al., A STUDY OF WIND VELOCITY IN LOWER TROPOSPHERE USING THE INDIAN MST RADAR, Indian journal of radio & space physics, 23(1), 1994, pp. 30-35
The Indian MST radar located at Gadanki (13.47-degrees-N, 79.18-degree
s-E) near Tirupati, Andhra Pradesh, was operated in the ST mode for fi
ve days in February-March 1992 to obtain Doppler power spectra in the
six beam positions, i.e. East, West, zenith-Y, North, South, and zenit
h-X. The power spectra were used to determine the zonal, meridional an
d vertical wind components in the lower troposphere (3.6 to 7.2 km). T
he Fast Fourier Transform (FFT) analysis of time series for 24-26 Feb.
and 23-24 Mar. 1992 shows that the waves of 5-10 and 16-20 min period
icities dominate in the lower troposphere. The amplitude of the wave v
elocity varies between 0.3 and 3.0 ms-1. The data were also used to st
udy the wind shears, and significant shears were noted only above 6.0
km.