Doppler radar – A detecting tool and measuring instrument in meteorology

India Meteorological Department has entered into a new era in exploring the atmosphere with the induction of state-of-the-art Doppler weather radar technology in its cyclone detection radar network. This article describes the salient features of the Doppler weather radar installed at Chennai. Use of Doppler technique combined with digital technology makes it possible to measure directly the wind component along the axis of the radial beam along with range-finding, in addition to a large number of derived products which become available in real time. A few typical examples of multifarious products available from this radar are presented. The scope for its utility in operational weather forecasting, particularly in the fields of cyclone warning and aviation has been highlighted.