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Title: Study on special ABL features observed over Tirupati using sodar
Authors: Reddy, K Krishna
Kumar, T R Vijaya
Kishore, P
Rao, S V Bhaskara
Rao, D narayana
Issue Date: Apr-1998
Publisher: NISCAIR-CSIR, India
Abstract: A monostatic acoustic sounder (sodar) has been developed in the Department of Physics, Sri Venkateswara University, Tirupati, for the study of dynamical behaviour of the atmospheric boundary layer (ABL) phenomena over Tirupati. The infrasonic pressure variations have been recorded near sodar site using a microbarograph. Short-period waves/down-flow structures (rare phenomena) caused due to onset of drainage flow are reported. The short-period wave (fluctuations) is usually associated with either convective plume activity or ground-based inversions in the evening transition hours. It is inferred that these short-period waves are caused due to the onset of nocturnal drainage flows under convection/thermal inversion of variable depth.
Page(s): 47-52
ISSN: 0975-105X (Online); 0367-8393 (Print)
Appears in Collections:IJRSP Vol.27(2) [April 1998]

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