Kalapureddy, MCRKumar, KKSivakumar, VGhosh, AKJain, ARReddy, KK2007-06-292007-06-292007-04Kalapureddy, MCR et al. 2007. Diurnal and seasonal variability of TKE dissipation rate in the ABL over a tropical station using UHF wind profiler. Journal of Atmospheric and Solar-Terrestrial Physics, Vol. 69 pp 419-4301364-6826http://hdl.handle.net/10204/757http://www.sciencedirect.com/science/journal/13646826This paper presents the diurnal and seasonal variation of Turbulence Kinetic Energy (TKE) dissipation rate (ε) in the Atmospheric Boundary-Layer (ABL) over a tropical station, Gadanki (13.5° N, 79.2° E) in India. Doppler spectral width measurements made by Lower Atmospheric Wind Profiler (LAWP) operating at 1357 MHz are utilized to estimate ε in the height region of 0.5–4.0 km on clear air days. Various non-turbulent spectral broadenings are calculated and separated out from the observed spectral width before estimating ε. It is found that in the lower tropospheric height region ε is in the range from 10−5.0 to 10−1.0 m2 s−3. ε showed significant diurnal variation in the boundary-layer. The larger values of ε, 10–2.7 m2 s−3, are noted to be associated with the Convective Boundary-Layer (CBL). The parameter ε is also showing significant seasonal variation. In summer and monsoon seasons the boundary-layer depths are observed up to a height of 4.0 km while the same are confined to below 2.0 km in post-monsoon and winter seasons.enABLAtmospheric boundary-layerTurbulence energy dissipation rateRadar doppler spectral widthUHF wind profilerArticleKalapureddy, M., Kumar, K., Sivakumar, V., Ghosh, A., Jain, A., & Reddy, K. (2007). Diurnal and seasonal variability of TKE dissipation rate in the ABL over a tropical station using UHF wind profiler. http://hdl.handle.net/10204/757Kalapureddy, MCR, KK Kumar, V Sivakumar, AK Ghosh, AR Jain, and KK Reddy "Diurnal and seasonal variability of TKE dissipation rate in the ABL over a tropical station using UHF wind profiler." (2007) http://hdl.handle.net/10204/757Kalapureddy M, Kumar K, Sivakumar V, Ghosh A, Jain A, Reddy K. Diurnal and seasonal variability of TKE dissipation rate in the ABL over a tropical station using UHF wind profiler. 2007; http://hdl.handle.net/10204/757.TY - Article AU - Kalapureddy, MCR AU - Kumar, KK AU - Sivakumar, V AU - Ghosh, AK AU - Jain, AR AU - Reddy, KK AB - This paper presents the diurnal and seasonal variation of Turbulence Kinetic Energy (TKE) dissipation rate (ε) in the Atmospheric Boundary-Layer (ABL) over a tropical station, Gadanki (13.5° N, 79.2° E) in India. Doppler spectral width measurements made by Lower Atmospheric Wind Profiler (LAWP) operating at 1357 MHz are utilized to estimate ε in the height region of 0.5–4.0 km on clear air days. Various non-turbulent spectral broadenings are calculated and separated out from the observed spectral width before estimating ε. It is found that in the lower tropospheric height region ε is in the range from 10−5.0 to 10−1.0 m2 s−3. ε showed significant diurnal variation in the boundary-layer. The larger values of ε, 10–2.7 m2 s−3, are noted to be associated with the Convective Boundary-Layer (CBL). The parameter ε is also showing significant seasonal variation. In summer and monsoon seasons the boundary-layer depths are observed up to a height of 4.0 km while the same are confined to below 2.0 km in post-monsoon and winter seasons. DA - 2007-04 DB - ResearchSpace DP - CSIR KW - ABL KW - Atmospheric boundary-layer KW - Turbulence energy dissipation rate KW - Radar doppler spectral width KW - UHF wind profiler LK - https://researchspace.csir.co.za PY - 2007 SM - 1364-6826 T1 - Diurnal and seasonal variability of TKE dissipation rate in the ABL over a tropical station using UHF wind profiler TI - Diurnal and seasonal variability of TKE dissipation rate in the ABL over a tropical station using UHF wind profiler UR - http://hdl.handle.net/10204/757 ER -