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New Doppler Radars in Maharashtra: IMD

  • IASbaba
  • June 24, 2021
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New Doppler Radars in Maharashtra: IMD

Part of: GS Prelims and GS -III – Indigenization of Technology

In news

    • In January 2021, Ministry of Earth Sciences commissioned two of the ten indigenously built X-Band Doppler Weather Radars (DWR) to closely monitor the weather changes over the Himalayas.

About Doppler Radar

  • It is a specialized radar that uses the Doppler effect to produce velocity data about objects at a distance.
    • Doppler effect: When the source and the signal are in relative motion to each other there is a change in the frequency observed by the observer. 
    • If they are moving closer, frequency increases and vice versa.
  • Based on Doppler principle the radar is designed to improve precision in long-range weather forecasting and surveillance using a parabolic dish antenna and a foam sandwich spherical radome.
  • DWR has the equipment to measure rainfall intensity, wind shear and velocity and locate a storm centre and the direction of a tornado or gust front.

About India Meteorological Department

  • It is an agency of the Ministry of Earth Sciences, established in 1875.
  • It is the principal agency responsible for meteorological observations, weather forecasting and seismology.

Pic courtesy: Researchgate

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