Classification of Tropical Precipitating Systems Using Wind Profiler Spectral Moments. Part I: Algorithm Description and Validation

• DOI: 10.1175/2007jtecha1031.1
• Publication Date: 2008-06-05T18:01:34Z
• Authors: T. Narayana Rao; N. V. P. Kirankumar; B. Radhakrishna; D. Narayana Rao; K. Nakamura
• Keywords: Wind profiler; Classification scheme; Feature (linguistics)

Abstract The lower atmospheric wind profiler (LAWP) measurements made at Gadanki, India, have been used to develop an objective algorithm classify the tropical precipitating systems. A detailed investigation on existing classification scheme reveals major shortcomings in scheme. In present study, it is shown with examples that Doppler velocity gradient (DVG) criterion a necessary but certainly not sufficient condition identify radar bright band. Such gradients can exist other types of rain systems, for example, convection, due modulation hydrometeors by vertical air motion. approach new deviates considerably from algorithms. For instance, algorithm, contrast identifying stratiform and assuming remaining as identifies first convection later precipitation based their specific characteristics. interesting feature this was built strengths potential schemes theoretically accepted thresholds precipitation. performance has verified help time–height maps moments corresponding surface rainfall patterns.