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:::: HIGHLIGHTS OF SCIENTIFIC RESULTS ::::
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LAWP reflectivity Profile | ||
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Contour
maps of LAWP reflectivity on five days 17-22 March 1999. Day to day
variability can be noticed in the depth of the boudary layer. At Gadanki
boundary layer height goes as high as 2-3 Kms, which is in the afternoon
hours when convective plumes may be pushing the boundary layer height.
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Precipitation Observations | ||
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LAWP
observations on 17-18 May 1999, the day on which some pricipitation
occured due to the atmospheric convection over radar site. Panel (a)
and (b) of the figure shows the radar reflectivity and vertical velocity
measurements. Panel (c) shows the plot of rain rate from Disdrometer.
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Wind comparison by different systems | ||
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Figure
shows comparison of Zonal, Merdional and wind speed derived from MST
Radar, LAWP, and GPS( from Tirupati and Satish Dhawan Space Centre, SHAR) .
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Gravity Wave Study | ||
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Figure
shows Modulation of Gravity wave activity by the long period equatorial
waves over tropical middle atmosphere.
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Wave Study | ||
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Figure
shows height-time-intensity plots showing the evidence of kilometer
scale waves in the lower E-region as observed by Indian MST Radar.
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LIDAR observation | ||
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(a)
Monthly height profiles of mean temperature derived from LIDAR observations,
showing mesospheric inversion at height range 70-80 kms. One of the
possible causativy mechanisms of the observed invertion could be dissipation
of energy by gravity waves at these heights.
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(b)
Height-day section of temperature fluctuations derived from LIDAR observations
showing stratospheric cooling. This figure also shows equatorial wave
modulation in observed temperature data, specially at upper mesospheric
heights.
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