Doppler SODAR observations of the temperature structure parameter during monsoon season over a tropical rural station,Gadanki |
| |
Authors: | M SHRAVAN KUMAR V K ANANDAN AMIT KESARKAR P NARASIMHA REDDY |
| |
Affiliation: | (1) Karlsruhe Institute of Technology, Institute for Meteorology and Climate Research – Atmospheric Environmental Research (IMK-IFU), Garmisch-Partenkirchen, Germany |
| |
Abstract: | Doppler SODAR (Sound Detection and Ranging) measurements over a tropical Indian station at National Atmospheric Research Laboratory (NARL), Gadanki (13.5°N, 79.2°E) during two consecutive monsoon seasons, 2007 and 2008, are investigated to study the influence of mechanically generated turbulence on temperature structure parameter (CT2)_{rm T}^{2}) in the convective boundary layer. Increase in the CT2_{rm T}^{2} is observed after the arrival of monsoon for both seasons. Contribution of vertical wind shear in horizontal wind component to CT2_{rm T}^{2} due to zonal winds is responsible for the increase observed in the temperature structure parameter which is inferred from the results obtained. CT2_{rm T}^{2} is found to be increased by an order of 2 in both the lower and upper altitudes, respectively. Magnitude of wind speed is reported to be doubled with the arrival of monsoon. It is also observed that, southwest monsoon wind modulates the day-to-day variations of wind pattern over this station during the onset phase of monsoon season. The lower variability observed at lower height is attributed to the complex topography surrounding this region. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|