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Title: Seasonal differences of non-migrating tides in the troposphere and lower stratosphere over Gadanki (13.5°N, 79.2°E)
Authors: Jani, Y N
Joshi, H P
Iyer, K N
Issue Date: Aug-2000
Publisher: NISCAIR-CSIR, India
Abstract: A study of seasonal differences of diurnal tidal oscillations in zonal and merid ional winds using Indian MST radar located at Gandanki (13.5oN, 79.2"E) shows that in different seasons this tropical region is dominated by diurnal tides with amplitudes varying from 2-3 ms-1 (at lower height) to 8-10 ms-1 (upper height) and vertical wavelengths from ~3 to 4 km in the lower troposphere and from ~5 to 7 km in the upper troposphere. These diurnal oscillations with large amplitude and short vertical wavelengths are probably produced by locally generated non-migrating tides. The observed amplitudes and phases of different seasons in the lower and upper troposphere are consistent with numerical simulations of non-migrating tides. The diurnal non-migrating tides with large amplitude ~10 ms-1observed in August over Gadanki may be associated with the latent heat released by deep convective clouds.
Page(s): 210-221
ISSN: 0975-105X (Online); 0367-8393 (Print)
Appears in Collections:IJRSP Vol.29(4) [August 2000]

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