A study of thermal plumes over Tirupati using sodar andmicrobarograph

摘要

An acoustic sounder is designed and developed for the study of theatmospheric boundary layer operating at a frequency of 2.2 kHz and aprobing range of 1 km. The infrasonic pressure variations have beenrecorded using a microbarograph. Simultaneous study of sodar echogramsand microbarograph are able to detect the thermal plumes in the boundarylayer. In addition, sodar and microbarograph data are seen to correlatewell to study the thermal plume activity in the atmospheric boundarylayer