How DWR works
Doppler Weather Radar (DWR) is a unique remote sensing weather surveillance tool, which consists of a transmitter, a receiver and an antenna. The transmitter emits beams (pulses) of microwave energy into the atmosphere. When these beams collide with objects in the atmosphere, such as raindrops, hailstones, snowflakes or cloud droplets, some of the energy bounces back to the radar. The receiver at the radar then collects the reflected energy and displays it in different ways. The antenna sends the information to another source to be processed and displayed to meteorologists and the general public.
(Above) The Doppler radar in Mumbai was installed on
top of Archana building in Navy Nagar in 2011; (Left) The
radar can predict weather events, like the 2005 floods in Mumbai, six hours in advance